Analysis Overview
SHA256
6d52522198afacd48a2ddf3a89f5a1d8cea5701bc76d1c06414ac6036f22239d
Threat Level: Known bad
The file 6d52522198afacd48a2ddf3a89f5a1d8cea5701bc76d1c06414ac6036f22239d was found to be: Known bad.
Malicious Activity Summary
UPX dump on OEP (original entry point)
UPX dump on OEP (original entry point)
Modifies AppInit DLL entries
Executes dropped EXE
UPX packed file
Drops file in Program Files directory
Unsigned PE
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-06 22:06
Signatures
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-06 22:06
Reported
2024-04-06 22:08
Platform
win7-20231129-en
Max time kernel
118s
Max time network
119s
Command Line
Signatures
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Modifies AppInit DLL entries
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\PROGRA~3\Mozilla\anhxrcb.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\PROGRA~3\Mozilla\anhxrcb.exe | C:\Users\Admin\AppData\Local\Temp\6d52522198afacd48a2ddf3a89f5a1d8cea5701bc76d1c06414ac6036f22239d.exe | N/A |
| File created | C:\PROGRA~3\Mozilla\fqurfhn.dll | C:\PROGRA~3\Mozilla\anhxrcb.exe | N/A |
Suspicious use of UnmapMainImage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\6d52522198afacd48a2ddf3a89f5a1d8cea5701bc76d1c06414ac6036f22239d.exe | N/A |
| N/A | N/A | C:\PROGRA~3\Mozilla\anhxrcb.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3016 wrote to memory of 3044 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\anhxrcb.exe |
| PID 3016 wrote to memory of 3044 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\anhxrcb.exe |
| PID 3016 wrote to memory of 3044 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\anhxrcb.exe |
| PID 3016 wrote to memory of 3044 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\anhxrcb.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\6d52522198afacd48a2ddf3a89f5a1d8cea5701bc76d1c06414ac6036f22239d.exe
"C:\Users\Admin\AppData\Local\Temp\6d52522198afacd48a2ddf3a89f5a1d8cea5701bc76d1c06414ac6036f22239d.exe"
C:\Windows\system32\taskeng.exe
taskeng.exe {9A5AE5AF-AECA-4007-85F1-1C4C022A808D} S-1-5-18:NT AUTHORITY\System:Service:
C:\PROGRA~3\Mozilla\anhxrcb.exe
C:\PROGRA~3\Mozilla\anhxrcb.exe -wxojhrj
Network
Files
memory/1752-0-0x0000000000400000-0x000000000045E000-memory.dmp
memory/1752-2-0x00000000004D0000-0x000000000052B000-memory.dmp
memory/1752-1-0x0000000000400000-0x000000000045B000-memory.dmp
memory/1752-4-0x0000000000400000-0x000000000045B000-memory.dmp
C:\PROGRA~3\Mozilla\anhxrcb.exe
| MD5 | acc7243b22ca7c26453c786e5ce31ab2 |
| SHA1 | 96026ab8e51e65c6c2017f098f1b13d5cd276f49 |
| SHA256 | caba03379f6bdebea5cf00c54f1ca1b5997be89c9b4d028c7fce24e1c7385e31 |
| SHA512 | c5668f7ce4e3cb17b772f7131586a5a82b76eb425e0510d21d354c073ed384a7706f96d254465fe827204c377fc85f4e4d99579a2b5c44676377a528aebc3482 |
memory/3044-7-0x0000000000400000-0x000000000045E000-memory.dmp
memory/3044-8-0x0000000000460000-0x00000000004BB000-memory.dmp
memory/3044-9-0x0000000000400000-0x000000000045B000-memory.dmp
memory/3044-11-0x0000000000400000-0x000000000045B000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-06 22:06
Reported
2024-04-06 22:08
Platform
win10v2004-20240226-en
Max time kernel
91s
Max time network
128s
Command Line
Signatures
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Modifies AppInit DLL entries
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\PROGRA~3\Mozilla\gfuniul.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\PROGRA~3\Mozilla\kzlcazd.dll | C:\PROGRA~3\Mozilla\gfuniul.exe | N/A |
| File created | C:\PROGRA~3\Mozilla\gfuniul.exe | C:\Users\Admin\AppData\Local\Temp\6d52522198afacd48a2ddf3a89f5a1d8cea5701bc76d1c06414ac6036f22239d.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\6d52522198afacd48a2ddf3a89f5a1d8cea5701bc76d1c06414ac6036f22239d.exe
"C:\Users\Admin\AppData\Local\Temp\6d52522198afacd48a2ddf3a89f5a1d8cea5701bc76d1c06414ac6036f22239d.exe"
C:\PROGRA~3\Mozilla\gfuniul.exe
C:\PROGRA~3\Mozilla\gfuniul.exe -lfdzfzd
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 0.204.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 75.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.71.91.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
Files
memory/5048-0-0x0000000000400000-0x000000000045E000-memory.dmp
memory/5048-1-0x00000000008F0000-0x000000000094B000-memory.dmp
memory/5048-2-0x0000000000400000-0x000000000045B000-memory.dmp
memory/5048-6-0x0000000000400000-0x000000000045B000-memory.dmp
C:\ProgramData\Mozilla\gfuniul.exe
| MD5 | bb32d87aa892a4d75dff0f071456a0b6 |
| SHA1 | dae6e23e61fe31ee33dc78a15804c713dd522828 |
| SHA256 | 79dae61e073f1995c13608cea51a6b4e68e41eddb64e423d8ad5df95bacdced2 |
| SHA512 | e9f38c36bc50adc055dfd112ab1e636c205e45b3d0ab96054191c5f419375f06bff209044962b09374d168fa138727c857ef1f946b0683d1bf91e29233266536 |
memory/4036-8-0x0000000000DA0000-0x0000000000DFB000-memory.dmp
memory/4036-9-0x0000000000400000-0x000000000045B000-memory.dmp
memory/4036-12-0x0000000000400000-0x000000000045B000-memory.dmp