| File name: | pdfixers.exe |
| Full analysis: | https://app.any.run/tasks/32a77d66-559b-4354-9fce-13f12352bada |
| Verdict: | Malicious activity |
| Threats: | Stealers are a group of malicious software that are intended for gaining unauthorized access to users’ information and transferring it to the attacker. The stealer malware category includes various types of programs that focus on their particular kind of data, including files, passwords, and cryptocurrency. Stealers are capable of spying on their targets by recording their keystrokes and taking screenshots. This type of malware is primarily distributed as part of phishing campaigns. |
| Analysis date: | August 08, 2024, 20:54:09 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32+ executable (GUI) x86-64 Mono/.Net assembly, for MS Windows |
| MD5: | B4440EEA7367C3FB04A89225DF4022A6 |
| SHA1: | 5A6C01F821F10F6ED1F1283ECBA36C5BACFB5838 |
| SHA256: | A024A18E27707738ADCD7B5A740C5A93534B4B8C9D3B947F6D85740AF19D17D0 |
| SSDEEP: | 98304:NKaPGf3Lx51clR43g0ZtKC5/TF4i9bYvQCPjhPXq2fZWwZmchG6QjvOr/av7Vx6U:Lm3qrzPw0jtrQp |
MALICIOUS
Scans artifacts that could help determine the target
- pdfixers.exe (PID: 6440)
Actions looks like stealing of personal data
- SumatraPDF-3.5.2-64.exe (PID: 6408)
SUSPICIOUS
Drops the executable file immediately after the start
- pdfixers.exe (PID: 6440)
Reads security settings of Internet Explorer
- pdfixers.exe (PID: 6440)
Reads Microsoft Outlook installation path
- pdfixers.exe (PID: 6440)
Reads Internet Explorer settings
- pdfixers.exe (PID: 6440)
Checks Windows Trust Settings
- pdfixers.exe (PID: 6440)
Executable content was dropped or overwritten
- pdfixers.exe (PID: 6440)
Creates a software uninstall entry
- pdfixers.exe (PID: 6440)
Searches for installed software
- pdfixers.exe (PID: 6440)
Reads the date of Windows installation
- pdfixers.exe (PID: 6440)
INFO
Reads the computer name
- pdfixers.exe (PID: 6440)
- SumatraPDF-3.5.2-64.exe (PID: 6408)
Checks supported languages
- pdfixers.exe (PID: 6440)
- SumatraPDF-3.5.2-64.exe (PID: 6408)
Reads the machine GUID from the registry
- pdfixers.exe (PID: 6440)
Checks proxy server information
- pdfixers.exe (PID: 6440)
Process checks Internet Explorer phishing filters
- pdfixers.exe (PID: 6440)
Creates files or folders in the user directory
- pdfixers.exe (PID: 6440)
- SumatraPDF-3.5.2-64.exe (PID: 6408)
Reads the software policy settings
- pdfixers.exe (PID: 6440)
Process checks computer location settings
- pdfixers.exe (PID: 6440)
Reads CPU info
- SumatraPDF-3.5.2-64.exe (PID: 6408)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Generic Win/DOS Executable (50) |
|---|---|---|
| .exe | | | DOS Executable Generic (49.9) |
EXIF
EXE
| MachineType: | AMD AMD64 |
|---|---|
| TimeStamp: | 2054:11:16 06:26:21+00:00 |
| ImageFileCharacteristics: | Executable, Large address aware |
| PEType: | PE32+ |
| LinkerVersion: | 80 |
| CodeSize: | 8382976 |
| InitializedDataSize: | 112128 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x0000 |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 6 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 1.0.0.0 |
| ProductVersionNumber: | 1.0.0.0 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | Neutral |
| CharacterSet: | Unicode |
| Comments: | - |
| CompanyName: | - |
| FileDescription: | Pdfixers |
| FileVersion: | 1.0.0.0 |
| InternalName: | Pdfixers.exe |
| LegalCopyright: | Copyright © 2023 |
| LegalTrademarks: | - |
| OriginalFileName: | Pdfixers.exe |
| ProductName: | Pdfixers |
| ProductVersion: | 1.0.0.0 |
| AssemblyVersion: | 1.0.0.0 |
Total processes
134
Monitored processes
2
Malicious processes
2
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6408 | "C:\Users\admin\AppData\Roaming\SumatraPDF\SumatraPDF-3.5.2-64.exe" | C:\Users\admin\AppData\Roaming\SumatraPDF\SumatraPDF-3.5.2-64.exe | pdfixers.exe | ||||||||||||
User: admin Company: Krzysztof Kowalczyk Integrity Level: MEDIUM Description: SumatraPDF Version: 3.5.2 Modules
| |||||||||||||||
| 6440 | "C:\Users\admin\AppData\Local\Temp\pdfixers.exe" | C:\Users\admin\AppData\Local\Temp\pdfixers.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: Pdfixers Version: 1.0.0.0 Modules
| |||||||||||||||
Total events
5 534
Read events
5 521
Write events
13
Delete events
0
Modification events
| (PID) Process: | (6440) pdfixers.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | ProxyBypass |
Value: 1 | |||
| (PID) Process: | (6440) pdfixers.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | IntranetName |
Value: 1 | |||
| (PID) Process: | (6440) pdfixers.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 1 | |||
| (PID) Process: | (6440) pdfixers.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 0 | |||
| (PID) Process: | (6440) pdfixers.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content |
| Operation: | write | Name: | CachePrefix |
Value: | |||
| (PID) Process: | (6440) pdfixers.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies |
| Operation: | write | Name: | CachePrefix |
Value: Cookie: | |||
| (PID) Process: | (6440) pdfixers.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History |
| Operation: | write | Name: | CachePrefix |
Value: Visited: | |||
| (PID) Process: | (6440) pdfixers.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SumatraPDFUninstall |
| Operation: | write | Name: | DisplayName |
Value: SumatraPDF | |||
| (PID) Process: | (6440) pdfixers.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SumatraPDFUninstall |
| Operation: | write | Name: | UninstallString |
Value: cmd /c rmdir /s /q "C:\Users\admin\AppData\Roaming\SumatraPDF" & del "C:\Users\admin\Desktop\SumatraPDF.lnk" & reg delete HKCU\Software\Microsoft\Windows\CurrentVersion\Uninstall\SumatraPDFUninstall /f | |||
Executable files
1
Suspicious files
14
Text files
3
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 6440 | pdfixers.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12 | binary | |
MD5:7FB5FA1534DCF77F2125B2403B30A0EE | SHA256:33A39E9EC2133230533A686EC43760026E014A3828C703707ACBC150FE40FD6F | |||
| 6440 | pdfixers.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B3513D73A177A2707D910183759B389B_5CF45833F44BFC2995315451A3896ACA | der | |
MD5:A03E5022373B95D46179B25AC9B7F460 | SHA256:CD80A67F46435F0000D801DA9138919E7CA11DAF5EA3E8E64D1873259A8C2CD5 | |||
| 6440 | pdfixers.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\4FA45AE1010E09657982D8D28B3BD38E_BE32D9F1882B93E37445F58E05C44495 | binary | |
MD5:A4D2CBA73D44E3A3A45836A2C6AB85C1 | SHA256:6C47C0AEB925C4A325D2332A25AB952EE7EC9AF3D18BD2948910B740D1FA17F8 | |||
| 6440 | pdfixers.exe | C:\Users\admin\AppData\Local\Microsoft\Windows\INetCache\IE\E4DJRUXW\css2[1].css | text | |
MD5:593563DEFDA42F8FAD22F5EA3F89B775 | SHA256:2F02D38536746DAE6535E3354B5B844C48C26589AE1B499BE5CB35EF66EAB511 | |||
| 6440 | pdfixers.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\4FA45AE1010E09657982D8D28B3BD38E_BE32D9F1882B93E37445F58E05C44495 | der | |
MD5:12A47D9F54F30EB9C280225D71DE659B | SHA256:292932D253E50357C8734B6607C6F37A1C32FAE5D95A47759114B931F00F6DDB | |||
| 6440 | pdfixers.exe | C:\Users\admin\AppData\Local\Microsoft\Windows\INetCache\IE\RR3E01RZ\font[1].eot | eot | |
MD5:C6B85601ADBF8C674B4B444DAD696A5D | SHA256:EC8671B432FF49E1E77F48692397E57ECFA584555AC664C932DCCEA0C9A16044 | |||
| 6408 | SumatraPDF-3.5.2-64.exe | C:\Users\admin\AppData\Roaming\SumatraPDF\SumatraPDF-settings.txt | text | |
MD5:60687024AC6CBA83F29A2CE03D1C265D | SHA256:74CC788067AAADC2E0154FFE281797F6BAE463D351EACAC85DB59432B106BA21 | |||
| 6440 | pdfixers.exe | C:\Users\admin\AppData\Local\Microsoft\Windows\INetCache\IE\KCV3KQBA\email-decode.min[1].js | binary | |
MD5:9E8F56E8E1806253BA01A95CFC3D392C | SHA256:2595496FE48DF6FCF9B1BC57C29A744C121EB4DD11566466BC13D2E52E6BBCC8 | |||
| 6440 | pdfixers.exe | C:\Users\admin\AppData\Roaming\SumatraPDF\SumatraPDF.zip | compressed | |
MD5:21B26AF0D4CE33D609915549F01A7705 | SHA256:66CCB395C9184DCE6822DFBB9970C877383B3EAD6D9417B5106A844AAC512989 | |||
| 6440 | pdfixers.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\05DDC6AA91765AACACDB0A5F96DF8199 | der | |
MD5:E935BC5762068CAF3E24A2683B1B8A88 | SHA256:A8ACCFCFEB51BD73DF23B91F4D89FF1A9EB7438EF5B12E8AFDA1A6FF1769E89D | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
9
TCP/UDP connections
42
DNS requests
23
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
6440 | pdfixers.exe | GET | 200 | 142.250.186.67:80 | http://c.pki.goog/r/gsr1.crl | unknown | — | — | whitelisted |
6440 | pdfixers.exe | GET | 200 | 142.250.186.67:80 | http://c.pki.goog/r/r4.crl | unknown | — | — | whitelisted |
6440 | pdfixers.exe | GET | 200 | 142.250.186.67:80 | http://c.pki.goog/r/r1.crl | unknown | — | — | whitelisted |
6440 | pdfixers.exe | GET | 200 | 142.250.186.67:80 | http://o.pki.goog/wr2/MFIwUDBOMEwwSjAJBgUrDgMCGgUABBRTQtSEi8EX%2BbYUTXd8%2ByMxD3s1zQQU3hse7XkV1D43JMMhu%2Bw0OW1CsjACEQCjHbN8Q48ByBJsBZfEZOeO | unknown | — | — | whitelisted |
6440 | pdfixers.exe | GET | 200 | 142.250.186.67:80 | http://o.pki.goog/wr2/MFIwUDBOMEwwSjAJBgUrDgMCGgUABBRTQtSEi8EX%2BbYUTXd8%2ByMxD3s1zQQU3hse7XkV1D43JMMhu%2Bw0OW1CsjACEQDAezvzBOn2FxIghPLaMkP6 | unknown | — | — | whitelisted |
5336 | SearchApp.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D | unknown | — | — | whitelisted |
2204 | svchost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
7048 | backgroundTaskHost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAn5bsKVVV8kdJ6vHl3O1J0%3D | unknown | — | — | whitelisted |
6996 | backgroundTaskHost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAn5bsKVVV8kdJ6vHl3O1J0%3D | unknown | — | — | whitelisted |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
840 | svchost.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
1060 | RUXIMICS.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
2120 | MoUsoCoreWorker.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
3888 | svchost.exe | 239.255.255.250:1900 | — | — | — | whitelisted |
6440 | pdfixers.exe | 104.21.11.17:443 | pixel.pdfixers.com | CLOUDFLARENET | — | unknown |
6440 | pdfixers.exe | 142.250.186.67:80 | c.pki.goog | GOOGLE | US | whitelisted |
6440 | pdfixers.exe | 142.250.184.234:443 | fonts.googleapis.com | GOOGLE | US | whitelisted |
6440 | pdfixers.exe | 142.250.181.227:443 | fonts.gstatic.com | GOOGLE | US | whitelisted |
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
pixel.pdfixers.com |
| unknown |
c.pki.goog |
| whitelisted |
fonts.googleapis.com |
| whitelisted |
o.pki.goog |
| whitelisted |
fonts.gstatic.com |
| whitelisted |
www.bing.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
login.live.com |
| whitelisted |