What is sum~inst.exe?
sum~inst.exe is part of SumatraPDF Installer and developed by Krzysztof Kowalczyk according to the sum~inst.exe version information.
sum~inst.exe's description is "SumatraPDF Installer"
sum~inst.exe is digitally signed by Krzysztof Kowalczyk.
sum~inst.exe is usually located in the 'c:\users\%USERNAME%\appdata\local\temp\' folder.
None of the anti-virus scanners at VirusTotal reports anything malicious about sum~inst.exe.
If you have additional information about the file, please share it with the FreeFixer users by posting a comment at the bottom of this page.
Vendor and version information [?]
The following is the available information on sum~inst.exe:
| Property | Value |
|---|---|
| Product name | SumatraPDF Installer |
| Company name | Krzysztof Kowalczyk |
| File description | SumatraPDF Installer |
| Original filename | SumatraPDF-installer.exe |
| Legal copyright | Copyright 2006-2016 all authors (GPLv3) |
| Product version | 3.1.2 |
| File version | 3.1.2 |
Here's a screenshot of the file properties when displayed by Windows Explorer:
| Product name | SumatraPDF Installer |
| Company name | Krzysztof Kowalczyk |
| File description | SumatraPDF Installer |
| Original filename | SumatraPDF-installer.exe |
| Legal copyright | Copyright 2006-2016 all authors (GPL.. |
| Product version | 3.1.2 |
| File version | 3.1.2 |
Digital signatures [?]
sum~inst.exe has a valid digital signature.
| Property | Value |
|---|---|
| Signer name | Krzysztof Kowalczyk |
| Certificate issuer name | COMODO RSA Code Signing CA |
| Certificate serial number | 00da99cff4efe6b3eda63ddff3b69993e4 |
VirusTotal report
None of the 70 anti-virus programs at VirusTotal detected the sum~inst.exe file.
Sandbox Report
The following information was gathered by executing the file inside Cuckoo Sandbox.
Summary
Successfully executed process in sandbox.
Summary
{
"directory_created": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\"
],
"dll_loaded": [
"C:\\Windows\\system32\\user32.dll",
"C:\\Windows\\system32\\dwmapi.dll",
"C:\\Windows\\system32\\ntdll.dll",
"kernel32.dll",
"kernel32",
"api-ms-win-core-fibers-l1-1-1",
"api-ms-win-core-localization-l1-2-1",
"api-ms-win-appmodel-runtime-l1-1-1",
"C:\\Windows\\system32\\ktmw32.dll",
"ext-ms-win-kernel32-package-current-l1-1-0",
"C:\\Windows\\system32\\kernel32.dll",
"dwmapi.dll",
"C:\\Windows\\system32\\uiautomationcore.dll",
"C:\\Windows\\system32\\normaliz.dll",
"C:\\Windows\\WinSxS\\x86_microsoft.windows.gdiplus_6595b64144ccf1df_1.1.7601.17514_none_72d18a4386696c80\\gdiplus.dll",
"C:\\Windows\\system32\\dbghelp.dll",
"api-ms-win-core-synch-l1-2-0",
"C:\\Windows\\system32\\uxtheme.dll"
],
"file_opened": [
"C:\\Windows\\System32\\oleaccrc.dll",
"C:\\Users\\cuck\\AppData\\Local\\Temp",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\sum~inst.exe",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\238cb2105910f48ded12a74f79c8224ebf70e48c9812216486f3c10d09129731.bin",
"C:\\Windows\\Globalization\\Sorting\\sortdefault.nls"
],
"file_copied": [
[
"C:\\Users\\cuck\\AppData\\Local\\Temp\\238cb2105910f48ded12a74f79c8224ebf70e48c9812216486f3c10d09129731.bin",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\sum~inst.exe"
]
],
"regkey_opened": [
"HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\SumatraPDF",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\SumatraPDF",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\OLEAUT"
],
"file_exists": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\SumatraPDF.exe",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\238cb2105910f48ded12a74f79c8224ebf70e48c9812216486f3c10d09129731.bin",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\sum~inst.exe"
],
"file_failed": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\sum~inst.exe"
],
"command_line": [
"\"C:\\Users\\cuck\\AppData\\Local\\Temp\\sum~inst.exe\" \/d \"C:\\Users\\cuck\\AppData\\Local\\Temp\" "
],
"file_moved": [
[
"C:\\Users\\cuck\\AppData\\Local\\Temp\\sum~inst.exe",
""
]
],
"regkey_read": [
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\CustomLocale\\en-US",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\ExtendedLocale\\en-US"
],
"directory_enumerated": [
"C:\\Users\\cuck\\AppData\\Local\\Temp",
"C:\\Users\\cuck",
"C:\\Users\\cuck\\AppData",
"C:\\Users\\cuck\\AppData\\Local",
"C:\\Users"
]
}Dropped
[
{
"yara": [],
"sha1": "874e38a7f9b5f250d47b7199aad135492c507487",
"name": "238cb2105910f48d_sum~inst.exe",
"filepath": "C:\\Users\\cuck\\AppData\\Local\\Temp\\sum~inst.exe",
"type": "PE32 executable (GUI) Intel 80386, for MS Windows",
"sha256": "238cb2105910f48ded12a74f79c8224ebf70e48c9812216486f3c10d09129731",
"urls": [
"http:\/\/www.usertrust.com1",
"http:\/\/ts-crl.ws.symantec.com\/tss-ca-g2.crl0(",
"http:\/\/ocsp.comodoca.com0",
"http:\/\/crl.thawte.com\/ThawteTimestampingCA.crl0",
"http:\/\/crl.usertrust.com\/UTN-USERFirst-Object.crl05",
"http:\/\/www.sumatrapdfreader.org",
"http:\/\/crl.comodoca.com\/COMODORSACertificationAuthority.crl0q",
"http:\/\/crl.comodoca.com\/COMODORSACodeSigningCA.crl0t",
"http:\/\/crl.usertrust.com\/AddTrustExternalCARoot.crl05",
"http:\/\/ocsp.thawte.com0",
"https:\/\/secure.comodo.net\/CPS0C",
"http:\/\/ocsp.usertrust.com0",
"http:\/\/ts-aia.ws.symantec.com\/tss-ca-g2.cer0",
"http:\/\/crt.comodoca.com\/COMODORSACodeSigningCA.crt0",
"http:\/\/crt.comodoca.com\/COMODORSAAddTrustCA.crt0",
"http:\/\/ts-ocsp.ws.symantec.com07"
],
"crc32": "F26E8752",
"path": "\/home\/hpuser\/.cuckoo\/storage\/analyses\/754\/files\/238cb2105910f48d_sum~inst.exe",
"ssdeep": null,
"size": 303760,
"sha512": "934b6c9df96ad7407ca2f30f37c1dcb6755a90d0d79f488f3b283e0c5cacf6277074585e249bab16ece33ee58bb3de9b60215b3f09cff1938377ce12b7ed0a80",
"pids": [],
"md5": "4cc75cfb88e321d3560bbf7f39dfc99c"
}
]Generic
[
{
"process_path": "C:\\Users\\cuck\\AppData\\Local\\Temp\\238cb2105910f48ded12a74f79c8224ebf70e48c9812216486f3c10d09129731.bin",
"process_name": "238cb2105910f48ded12a74f79c8224ebf70e48c9812216486f3c10d09129731.bin",
"pid": 2420,
"summary": {
"directory_created": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\"
],
"dll_loaded": [
"C:\\Windows\\system32\\user32.dll",
"C:\\Windows\\system32\\dwmapi.dll",
"C:\\Windows\\system32\\ntdll.dll",
"kernel32.dll",
"kernel32",
"api-ms-win-core-fibers-l1-1-1",
"api-ms-win-core-localization-l1-2-1",
"api-ms-win-appmodel-runtime-l1-1-1",
"C:\\Windows\\system32\\ktmw32.dll",
"ext-ms-win-kernel32-package-current-l1-1-0",
"C:\\Windows\\system32\\kernel32.dll",
"C:\\Windows\\system32\\uiautomationcore.dll",
"C:\\Windows\\system32\\normaliz.dll",
"C:\\Windows\\WinSxS\\x86_microsoft.windows.gdiplus_6595b64144ccf1df_1.1.7601.17514_none_72d18a4386696c80\\gdiplus.dll",
"C:\\Windows\\system32\\dbghelp.dll",
"api-ms-win-core-synch-l1-2-0",
"C:\\Windows\\system32\\uxtheme.dll"
],
"file_opened": [
"C:\\Windows\\System32\\oleaccrc.dll",
"C:\\Users\\cuck\\AppData\\Local\\Temp",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\238cb2105910f48ded12a74f79c8224ebf70e48c9812216486f3c10d09129731.bin",
"C:\\Windows\\Globalization\\Sorting\\sortdefault.nls"
],
"file_copied": [
[
"C:\\Users\\cuck\\AppData\\Local\\Temp\\238cb2105910f48ded12a74f79c8224ebf70e48c9812216486f3c10d09129731.bin",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\sum~inst.exe"
]
],
"regkey_opened": [
"HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\SumatraPDF",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\SumatraPDF",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\OLEAUT"
],
"file_exists": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\238cb2105910f48ded12a74f79c8224ebf70e48c9812216486f3c10d09129731.bin",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\sum~inst.exe"
],
"file_failed": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\sum~inst.exe"
],
"command_line": [
"\"C:\\Users\\cuck\\AppData\\Local\\Temp\\sum~inst.exe\" \/d \"C:\\Users\\cuck\\AppData\\Local\\Temp\" "
],
"file_moved": [
[
"C:\\Users\\cuck\\AppData\\Local\\Temp\\sum~inst.exe",
""
]
],
"regkey_read": [
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\CustomLocale\\en-US",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\ExtendedLocale\\en-US"
],
"directory_enumerated": [
"C:\\Users\\cuck\\AppData\\Local\\Temp",
"C:\\Users\\cuck",
"C:\\Users\\cuck\\AppData",
"C:\\Users\\cuck\\AppData\\Local",
"C:\\Users"
]
},
"first_seen": 1562115188.6406,
"ppid": 1268
},
{
"process_path": "C:\\Windows\\System32\\lsass.exe",
"process_name": "lsass.exe",
"pid": 476,
"summary": {},
"first_seen": 1562115188.3594,
"ppid": 376
},
{
"process_path": "C:\\Users\\cuck\\AppData\\Local\\Temp\\sum~inst.exe",
"process_name": "sum~inst.exe",
"pid": 2500,
"summary": {
"directory_created": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\"
],
"dll_loaded": [
"C:\\Windows\\system32\\user32.dll",
"C:\\Windows\\system32\\dwmapi.dll",
"C:\\Windows\\system32\\ntdll.dll",
"kernel32.dll",
"kernel32",
"api-ms-win-core-fibers-l1-1-1",
"api-ms-win-core-localization-l1-2-1",
"api-ms-win-appmodel-runtime-l1-1-1",
"C:\\Windows\\system32\\ktmw32.dll",
"ext-ms-win-kernel32-package-current-l1-1-0",
"C:\\Windows\\system32\\kernel32.dll",
"dwmapi.dll",
"C:\\Windows\\system32\\uiautomationcore.dll",
"C:\\Windows\\system32\\normaliz.dll",
"C:\\Windows\\WinSxS\\x86_microsoft.windows.gdiplus_6595b64144ccf1df_1.1.7601.17514_none_72d18a4386696c80\\gdiplus.dll",
"C:\\Windows\\system32\\dbghelp.dll",
"api-ms-win-core-synch-l1-2-0",
"C:\\Windows\\system32\\uxtheme.dll"
],
"file_opened": [
"C:\\Windows\\System32\\oleaccrc.dll",
"C:\\Users\\cuck\\AppData\\Local\\Temp",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\sum~inst.exe",
"C:\\Windows\\Globalization\\Sorting\\sortdefault.nls"
],
"regkey_opened": [
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\OLEAUT"
],
"file_exists": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\SumatraPDF.exe"
],
"regkey_read": [
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\CustomLocale\\en-US",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\ExtendedLocale\\en-US"
]
},
"first_seen": 1562115188.8906,
"ppid": 2420
}
]Signatures
[
{
"markcount": 1,
"families": [],
"description": "This executable has a PDB path",
"severity": 1,
"marks": [
{
"category": "pdb_path",
"ioc": "C:\\Users\\kjk\\src\\sumatrapdf\\rel\\Uninstaller.pdb",
"type": "ioc",
"description": null
}
],
"references": [],
"name": "has_pdb"
},
{
"markcount": 1,
"families": [],
"description": "The executable contains unknown PE section names indicative of a packer (could be a false positive)",
"severity": 1,
"marks": [
{
"category": "section",
"ioc": ".gfids",
"type": "ioc",
"description": null
}
],
"references": [],
"name": "pe_features"
},
{
"markcount": 1,
"families": [],
"description": "Drops an executable to the user AppData folder",
"severity": 2,
"marks": [
{
"category": "file",
"ioc": "C:\\Users\\cuck\\AppData\\Local\\Temp\\sum~inst.exe",
"type": "ioc",
"description": null
}
],
"references": [],
"name": "exe_appdata"
},
{
"markcount": 3,
"families": [],
"description": "Queries for potentially installed applications",
"severity": 2,
"marks": [
{
"call": {
"category": "registry",
"status": 0,
"stacktrace": [],
"last_error": 0,
"nt_status": -1073741772,
"api": "RegOpenKeyExW",
"return_value": 2,
"arguments": {
"access": "0x00020019",
"base_handle": "0x80000001",
"key_handle": "0x00000000",
"regkey": "HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\SumatraPDF",
"regkey_r": "Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\SumatraPDF",
"options": 0
},
"time": 1562115188.7966,
"tid": 2460,
"flags": {}
},
"pid": 2420,
"type": "call",
"cid": 176
},
{
"call": {
"category": "registry",
"status": 0,
"stacktrace": [],
"last_error": 0,
"nt_status": -1073741772,
"api": "RegOpenKeyExW",
"return_value": 2,
"arguments": {
"access": "0x00020019",
"base_handle": "0x80000002",
"key_handle": "0x00000000",
"regkey": "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\SumatraPDF",
"regkey_r": "Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\SumatraPDF",
"options": 0
},
"time": 1562115188.7966,
"tid": 2460,
"flags": {}
},
"pid": 2420,
"type": "call",
"cid": 177
},
{
"call": {
"category": "registry",
"status": 0,
"stacktrace": [],
"last_error": 0,
"nt_status": -1073741772,
"api": "RegOpenKeyExW",
"return_value": 2,
"arguments": {
"access": "0x00020119",
"base_handle": "0x80000002",
"key_handle": "0x00000000",
"regkey": "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\SumatraPDF",
"regkey_r": "Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\SumatraPDF",
"options": 0
},
"time": 1562115188.7966,
"tid": 2460,
"flags": {}
},
"pid": 2420,
"type": "call",
"cid": 178
}
],
"references": [],
"name": "queries_programs"
}
]Yara
The Yara rules did not detect anything in the file.
Network
{
"tls": [],
"udp": [
{
"src": "192.168.56.101",
"dst": "192.168.56.255",
"offset": 662,
"time": 6.2305200099945,
"dport": 137,
"sport": 137
},
{
"src": "192.168.56.101",
"dst": "224.0.0.252",
"offset": 5190,
"time": 6.1887810230255,
"dport": 5355,
"sport": 51001
},
{
"src": "192.168.56.101",
"dst": "224.0.0.252",
"offset": 5518,
"time": 4.1657569408417,
"dport": 5355,
"sport": 53595
},
{
"src": "192.168.56.101",
"dst": "224.0.0.252",
"offset": 5846,
"time": 6.2004280090332,
"dport": 5355,
"sport": 53848
},
{
"src": "192.168.56.101",
"dst": "224.0.0.252",
"offset": 6174,
"time": 4.6705830097198,
"dport": 5355,
"sport": 54255
},
{
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"dst": "224.0.0.252",
"offset": 6502,
"time": 3.0518410205841,
"dport": 5355,
"sport": 55314
},
{
"src": "192.168.56.101",
"dst": "239.255.255.250",
"offset": 6830,
"time": 4.6843709945679,
"dport": 1900,
"sport": 1900
},
{
"src": "192.168.56.101",
"dst": "239.255.255.250",
"offset": 15512,
"time": 4.1993608474731,
"dport": 3702,
"sport": 49152
},
{
"src": "192.168.56.101",
"dst": "239.255.255.250",
"offset": 19704,
"time": 6.2699458599091,
"dport": 1900,
"sport": 53598
}
],
"dns_servers": [],
"http": [],
"icmp": [],
"smtp": [],
"tcp": [],
"smtp_ex": [],
"mitm": [],
"hosts": [],
"pcap_sha256": "e2de4086dfb2d0d4cdb1b02848f0746c6910330bf23b10462eb9062e7163465f",
"dns": [],
"http_ex": [],
"domains": [],
"dead_hosts": [],
"sorted_pcap_sha256": "ac7d09d77408c926a98e7189a7e5ecf71f24719d1bdcc2282d72a6985e9bffce",
"irc": [],
"https_ex": []
}Screenshots
Hashes [?]
| Property | Value |
|---|---|
| MD5 | 4cc75cfb88e321d3560bbf7f39dfc99c |
| SHA256 | 238cb2105910f48ded12a74f79c8224ebf70e48c9812216486f3c10d09129731 |
Error Messages
These are some of the error messages that can appear related to sum~inst.exe:
sum~inst.exe has encountered a problem and needs to close. We are sorry for the inconvenience.
sum~inst.exe - Application Error. The instruction at "0xXXXXXXXX" referenced memory at "0xXXXXXXXX". The memory could not be "read/written". Click on OK to terminate the program.
SumatraPDF Installer has stopped working.
End Program - sum~inst.exe. This program is not responding.
sum~inst.exe is not a valid Win32 application.
sum~inst.exe - Application Error. The application failed to initialize properly (0xXXXXXXXX). Click OK to terminate the application.
What will you do with sum~inst.exe?
To help other users, please let us know what you will do with sum~inst.exe:
Malware or legitimate?
If you feel that you need more information to determine if your should keep this file or remove it, please read this guide.
And now some shameless self promotion ;)
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Comments
Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.
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