Analysis Overview
SHA256
a1b0d5f0e0bea0fd91cf707ef2632433c7bdb2b86cbe7e94effa85314574c0b2
Threat Level: Likely malicious
The file a1b0d5f0e0bea0fd91cf707ef2632433c7bdb2b86cbe7e94effa85314574c0b2 was found to be: Likely malicious.
Malicious Activity Summary
Modifies AppInit DLL entries
Executes dropped EXE
Drops file in Program Files directory
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-06 23:54
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-06 23:54
Reported
2024-04-06 23:57
Platform
win7-20240220-en
Max time kernel
146s
Max time network
122s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\PROGRA~3\Mozilla\wrvdfyg.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\PROGRA~3\Mozilla\wrvdfyg.exe | C:\Users\Admin\AppData\Local\Temp\a1b0d5f0e0bea0fd91cf707ef2632433c7bdb2b86cbe7e94effa85314574c0b2.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2356 wrote to memory of 3020 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\wrvdfyg.exe |
| PID 2356 wrote to memory of 3020 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\wrvdfyg.exe |
| PID 2356 wrote to memory of 3020 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\wrvdfyg.exe |
| PID 2356 wrote to memory of 3020 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\wrvdfyg.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\a1b0d5f0e0bea0fd91cf707ef2632433c7bdb2b86cbe7e94effa85314574c0b2.exe
"C:\Users\Admin\AppData\Local\Temp\a1b0d5f0e0bea0fd91cf707ef2632433c7bdb2b86cbe7e94effa85314574c0b2.exe"
C:\Windows\system32\taskeng.exe
taskeng.exe {56E6ED25-51DA-4FAF-83EF-545B65C8A49D} S-1-5-18:NT AUTHORITY\System:Service:
C:\PROGRA~3\Mozilla\wrvdfyg.exe
C:\PROGRA~3\Mozilla\wrvdfyg.exe -hzyjzia
Network
Files
memory/2200-0-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2200-1-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2200-2-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2200-3-0x0000000000160000-0x0000000000161000-memory.dmp
memory/2200-7-0x0000000000400000-0x000000000045E000-memory.dmp
C:\PROGRA~3\Mozilla\wrvdfyg.exe
| MD5 | 80c09fa6e221bd376fd11fccadc45a90 |
| SHA1 | 010f2d6cbbdde4ce03c661be2ceba203e26e94ec |
| SHA256 | d2d937200c3f6b78e06223ca31d1297783fa0d6c5f01fa285aad0b8a3dfac76f |
| SHA512 | 73988e4e32e6eb6e9e0b67da7fea09f4cd852aa835c643fa60d27b0e30b4cebf1f7074f12152d8eaa5fd297d1457980fc03d35c4afab5852349eaad5cdedecac |
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-06 23:54
Reported
2024-04-06 23:57
Platform
win10v2004-20240226-en
Max time kernel
148s
Max time network
153s
Command Line
Signatures
Modifies AppInit DLL entries
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\PROGRA~3\Mozilla\fwjctpb.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\PROGRA~3\Mozilla\fwjctpb.exe | C:\Users\Admin\AppData\Local\Temp\a1b0d5f0e0bea0fd91cf707ef2632433c7bdb2b86cbe7e94effa85314574c0b2.exe | N/A |
| File created | C:\PROGRA~3\Mozilla\jqvifpn.dll | C:\PROGRA~3\Mozilla\fwjctpb.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\a1b0d5f0e0bea0fd91cf707ef2632433c7bdb2b86cbe7e94effa85314574c0b2.exe
"C:\Users\Admin\AppData\Local\Temp\a1b0d5f0e0bea0fd91cf707ef2632433c7bdb2b86cbe7e94effa85314574c0b2.exe"
C:\PROGRA~3\Mozilla\fwjctpb.exe
C:\PROGRA~3\Mozilla\fwjctpb.exe -qdcpmcc
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 98.56.20.217.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 19.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 137.71.105.51.in-addr.arpa | udp |
Files
memory/3176-0-0x0000000000400000-0x000000000045E000-memory.dmp
memory/3176-1-0x00000000009A0000-0x00000000009A1000-memory.dmp
memory/3176-2-0x0000000000400000-0x000000000045E000-memory.dmp
C:\ProgramData\Mozilla\fwjctpb.exe
| MD5 | 8f237f0537289a18f07e444b75a8b677 |
| SHA1 | e3a29a438b264bccde4bd0e145adb7b567722e42 |
| SHA256 | bd39a0768164d478f9099a4f795e116a132be50ecbac556692b77371fc6d572b |
| SHA512 | e0a03f9d6f06ebe64424bfe5981642544e8b3be4384b8518093c64f698316676b9c82bf988956714f1fa3d68c96c0b47cfcba5940d96c41c9a132736a8313287 |
memory/3176-8-0x0000000000400000-0x000000000045E000-memory.dmp
memory/4716-9-0x0000000000400000-0x000000000045E000-memory.dmp
memory/4716-10-0x0000000000400000-0x000000000045E000-memory.dmp
memory/4716-11-0x0000000000400000-0x000000000045E000-memory.dmp
memory/4716-15-0x0000000000400000-0x000000000045E000-memory.dmp