Analysis Overview
SHA256
6bf2759852d14687f4506b2a6f12f0eaf78c60238cdd403b2ea20402f1f0a139
Threat Level: Likely malicious
The file 6bf2759852d14687f4506b2a6f12f0eaf78c60238cdd403b2ea20402f1f0a139 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 UnmapMainImage
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-06 22:03
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-06 22:03
Reported
2024-04-06 22:06
Platform
win7-20240221-en
Max time kernel
118s
Max time network
122s
Command Line
Signatures
Modifies AppInit DLL entries
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\PROGRA~3\Mozilla\tbckyxk.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\PROGRA~3\Mozilla\tbckyxk.exe | C:\Users\Admin\AppData\Local\Temp\6bf2759852d14687f4506b2a6f12f0eaf78c60238cdd403b2ea20402f1f0a139.exe | N/A |
| File created | C:\PROGRA~3\Mozilla\newtrln.dll | C:\PROGRA~3\Mozilla\tbckyxk.exe | N/A |
Suspicious use of UnmapMainImage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\6bf2759852d14687f4506b2a6f12f0eaf78c60238cdd403b2ea20402f1f0a139.exe | N/A |
| N/A | N/A | C:\PROGRA~3\Mozilla\tbckyxk.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2280 wrote to memory of 2316 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\tbckyxk.exe |
| PID 2280 wrote to memory of 2316 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\tbckyxk.exe |
| PID 2280 wrote to memory of 2316 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\tbckyxk.exe |
| PID 2280 wrote to memory of 2316 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\tbckyxk.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\6bf2759852d14687f4506b2a6f12f0eaf78c60238cdd403b2ea20402f1f0a139.exe
"C:\Users\Admin\AppData\Local\Temp\6bf2759852d14687f4506b2a6f12f0eaf78c60238cdd403b2ea20402f1f0a139.exe"
C:\Windows\system32\taskeng.exe
taskeng.exe {B90936FB-C976-4183-9BCC-94C94F151B10} S-1-5-18:NT AUTHORITY\System:Service:
C:\PROGRA~3\Mozilla\tbckyxk.exe
C:\PROGRA~3\Mozilla\tbckyxk.exe -gqpcbye
Network
Files
memory/1100-0-0x0000000000400000-0x0000000000469000-memory.dmp
memory/1100-2-0x0000000000400000-0x000000000045B000-memory.dmp
memory/1100-1-0x0000000000310000-0x000000000036C000-memory.dmp
memory/1100-4-0x0000000000400000-0x000000000045B000-memory.dmp
C:\PROGRA~3\Mozilla\tbckyxk.exe
| MD5 | 521e64c9c35122a97aaa6d16b4689034 |
| SHA1 | 9ae8a9eb82a061e18eabcefa22201348c088c94b |
| SHA256 | 8a493ac89847feae24c1d41cbc54c3e2110ba2fbb8b0cdeac24bf7284ac5dabf |
| SHA512 | 03cf68d1a0d66d2baa09d568b2f8f1ae6cd4853675fe9d2fec45194743d7d6867276f76cff12dd2177f1e7ab58a8c0e9f27c0d29e9cd723440701dd304a9e6e0 |
memory/2316-7-0x0000000000400000-0x0000000000469000-memory.dmp
memory/2316-9-0x0000000000400000-0x000000000045B000-memory.dmp
memory/2316-8-0x0000000000470000-0x00000000004CC000-memory.dmp
memory/2316-11-0x0000000000400000-0x000000000045B000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-06 22:03
Reported
2024-04-06 22:06
Platform
win10v2004-20240226-en
Max time kernel
149s
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\gfuniul.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\PROGRA~3\Mozilla\gfuniul.exe | C:\Users\Admin\AppData\Local\Temp\6bf2759852d14687f4506b2a6f12f0eaf78c60238cdd403b2ea20402f1f0a139.exe | N/A |
| File created | C:\PROGRA~3\Mozilla\kzlcazd.dll | C:\PROGRA~3\Mozilla\gfuniul.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\6bf2759852d14687f4506b2a6f12f0eaf78c60238cdd403b2ea20402f1f0a139.exe
"C:\Users\Admin\AppData\Local\Temp\6bf2759852d14687f4506b2a6f12f0eaf78c60238cdd403b2ea20402f1f0a139.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 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 20.231.121.79:80 | tcp | |
| 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 | 134.71.91.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 145.83.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 17.83.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 85.65.42.20.in-addr.arpa | udp |
Files
memory/1420-0-0x0000000000400000-0x0000000000469000-memory.dmp
memory/1420-1-0x0000000000630000-0x000000000068C000-memory.dmp
memory/1420-2-0x0000000000400000-0x000000000045B000-memory.dmp
C:\PROGRA~3\Mozilla\gfuniul.exe
| MD5 | 53318006e16f2aa855eab514b4b66fbc |
| SHA1 | cf9bfd649d7bb4f7c632b2487e63e69bba060edb |
| SHA256 | 0045db14b54fb2e0b5c67a68e2bac0e63289a2ce728662533538258167c4e087 |
| SHA512 | 58f33ae2b9d96d7efe1fba5d046357bb3f63df86a6ce97bf83b8328796371aa578d56f1fed40ce594c5029267c47b3c3ed221f344a2a8ee9453610dbeff980b6 |
memory/1420-6-0x0000000000400000-0x000000000045B000-memory.dmp
memory/1420-8-0x0000000000630000-0x000000000068C000-memory.dmp
memory/4320-9-0x0000000000600000-0x000000000065C000-memory.dmp
memory/4320-10-0x0000000000400000-0x000000000045B000-memory.dmp
memory/4320-12-0x0000000000400000-0x000000000045B000-memory.dmp