Analysis Overview
SHA256
f3ca296983fb3c0bfaef5c7567a9c33fd60c8e500203aeca3bd375a20c88e39f
Threat Level: Known bad
The file f3ca296983fb3c0bfaef5c7567a9c33fd60c8e500203aeca3bd375a20c88e39f was found to be: Known bad.
Malicious Activity Summary
Modifies visiblity of hidden/system files in Explorer
Executes dropped EXE
Checks computer location settings
Loads dropped DLL
Adds Run key to start application
Enumerates physical storage devices
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-01 05:11
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-01 05:11
Reported
2024-06-01 05:14
Platform
win7-20240221-en
Max time kernel
150s
Max time network
123s
Command Line
Signatures
Modifies visiblity of hidden/system files in Explorer
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" | C:\Users\Admin\tiavow.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\tiavow.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\f3ca296983fb3c0bfaef5c7567a9c33fd60c8e500203aeca3bd375a20c88e39f.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\f3ca296983fb3c0bfaef5c7567a9c33fd60c8e500203aeca3bd375a20c88e39f.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\tiavow = "C:\\Users\\Admin\\tiavow.exe" | C:\Users\Admin\tiavow.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\f3ca296983fb3c0bfaef5c7567a9c33fd60c8e500203aeca3bd375a20c88e39f.exe | N/A |
| N/A | N/A | C:\Users\Admin\tiavow.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f3ca296983fb3c0bfaef5c7567a9c33fd60c8e500203aeca3bd375a20c88e39f.exe
"C:\Users\Admin\AppData\Local\Temp\f3ca296983fb3c0bfaef5c7567a9c33fd60c8e500203aeca3bd375a20c88e39f.exe"
C:\Users\Admin\tiavow.exe
"C:\Users\Admin\tiavow.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | ns4.thepicturehut.net | udp |
Files
memory/3056-0-0x0000000000400000-0x0000000000412000-memory.dmp
\Users\Admin\tiavow.exe
| MD5 | ba6d4691d93478bd62c904580aa16590 |
| SHA1 | e4097dfb1c1e8dd2470139d6f57d634fd467e7e2 |
| SHA256 | c972f4b5cbaedee045e17d39b2ba302ed16080d04e82a126e5a820c46fd4a8b1 |
| SHA512 | b05d57e6a93968d00694c8f40f685b6d37be44d7806c9aa8c61e79fcc426112a1f568fb8f26cec0f669dd1318df7e59bbd151f7d3d58bd2d1f4e9d2b54b8400f |
memory/3056-9-0x0000000003AB0000-0x0000000003AC2000-memory.dmp
memory/3052-19-0x0000000000400000-0x0000000000412000-memory.dmp
memory/3056-18-0x0000000003AB0000-0x0000000003AC2000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-01 05:11
Reported
2024-06-01 05:14
Platform
win10v2004-20240508-en
Max time kernel
150s
Max time network
124s
Command Line
Signatures
Modifies visiblity of hidden/system files in Explorer
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" | C:\Users\Admin\pdfol.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f3ca296983fb3c0bfaef5c7567a9c33fd60c8e500203aeca3bd375a20c88e39f.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\pdfol.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pdfol = "C:\\Users\\Admin\\pdfol.exe" | C:\Users\Admin\pdfol.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\f3ca296983fb3c0bfaef5c7567a9c33fd60c8e500203aeca3bd375a20c88e39f.exe | N/A |
| N/A | N/A | C:\Users\Admin\pdfol.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f3ca296983fb3c0bfaef5c7567a9c33fd60c8e500203aeca3bd375a20c88e39f.exe
"C:\Users\Admin\AppData\Local\Temp\f3ca296983fb3c0bfaef5c7567a9c33fd60c8e500203aeca3bd375a20c88e39f.exe"
C:\Users\Admin\pdfol.exe
"C:\Users\Admin\pdfol.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 91.90.14.23.in-addr.arpa | udp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ns1.thepicturehut.net | udp |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
Files
memory/1920-0-0x0000000000400000-0x0000000000412000-memory.dmp
C:\Users\Admin\pdfol.exe
| MD5 | f5143b27442a153de3d22418cdc80649 |
| SHA1 | 80b44d7b2fa0ee14a975de3a6291df52ffb9b52b |
| SHA256 | d4f92555309ce98156e75ac587062c404004fe71232d0a60493fdc7a45113ea0 |
| SHA512 | 084640936ab654a84920715c81dd04220fbc0a8f1798cb5f35af6413a442de62fbd7943c564601ad7c443f56f35184b2fa7d7eda3229b62c15b927fbb65cd4de |
memory/3684-34-0x0000000000400000-0x0000000000412000-memory.dmp