Analysis Overview
SHA256
1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953
Threat Level: Known bad
The file 1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953 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
2024-04-07 19:13
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 |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-07 19:13
Reported
2024-04-07 19:16
Platform
win7-20240319-en
Max time kernel
119s
Max time network
122s
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\cwtsudd.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\cwtsudd.exe | C:\Users\Admin\AppData\Local\Temp\1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953.exe | N/A |
| File created | C:\PROGRA~3\Mozilla\njrippn.dll | C:\PROGRA~3\Mozilla\cwtsudd.exe | N/A |
Suspicious use of UnmapMainImage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953.exe | N/A |
| N/A | N/A | C:\PROGRA~3\Mozilla\cwtsudd.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1984 wrote to memory of 1696 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\cwtsudd.exe |
| PID 1984 wrote to memory of 1696 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\cwtsudd.exe |
| PID 1984 wrote to memory of 1696 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\cwtsudd.exe |
| PID 1984 wrote to memory of 1696 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\cwtsudd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953.exe
"C:\Users\Admin\AppData\Local\Temp\1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953.exe"
C:\Windows\system32\taskeng.exe
taskeng.exe {6F227F7D-68D6-4057-91B2-5953B1271FEC} S-1-5-18:NT AUTHORITY\System:Service:
C:\PROGRA~3\Mozilla\cwtsudd.exe
C:\PROGRA~3\Mozilla\cwtsudd.exe -ldxtpdk
Network
Files
memory/2252-0-0x0000000000400000-0x000000000045F000-memory.dmp
memory/2252-1-0x00000000002E0000-0x000000000033B000-memory.dmp
memory/2252-2-0x0000000000400000-0x000000000045B000-memory.dmp
memory/2252-4-0x0000000000400000-0x000000000045B000-memory.dmp
C:\PROGRA~3\Mozilla\cwtsudd.exe
| MD5 | e5a73f768bd118cb2bb5e907f103628b |
| SHA1 | c5d3dcc9a04e81f99c63d3237c5688a60c44b220 |
| SHA256 | 0cb9970dbd99863f56d5bff0d1bfa4f457cc639a0628af0b2eebbc4db93f2cb4 |
| SHA512 | 2ba5bb80bc64883fa54298dcfcf966285cb60d4e3e12ec3be89d7316c1a2cb2e0831261b2885ad5a44f64870b38e39dffe422a98f18765587764ae661f02c1da |
memory/1696-8-0x0000000000400000-0x000000000045B000-memory.dmp
memory/1696-7-0x0000000000590000-0x00000000005EB000-memory.dmp
memory/1696-11-0x0000000000590000-0x00000000005EB000-memory.dmp
memory/1696-10-0x0000000000400000-0x000000000045B000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-07 19:13
Reported
2024-04-07 19:16
Platform
win10v2004-20240226-en
Max time kernel
147s
Max time network
157s
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\fwjctpb.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\fwjctpb.exe | C:\Users\Admin\AppData\Local\Temp\1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953.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\1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953.exe
"C:\Users\Admin\AppData\Local\Temp\1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953.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 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 136.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 121.118.77.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 253.15.104.51.in-addr.arpa | udp |
Files
memory/3808-0-0x0000000000400000-0x000000000045F000-memory.dmp
memory/3808-1-0x0000000000A40000-0x0000000000A9B000-memory.dmp
memory/3808-2-0x0000000000400000-0x000000000045B000-memory.dmp
memory/3808-4-0x0000000000400000-0x000000000045B000-memory.dmp
C:\ProgramData\Mozilla\fwjctpb.exe
| MD5 | a6c3e6d094c4ed90be5fad358c687e37 |
| SHA1 | 9e44aa2a369a9921cc9baba2dc6b7dff33b1ca27 |
| SHA256 | 3482b9609b0ef37d65bf09132d10aec13d17af47567ebde3313c90cf432f4c57 |
| SHA512 | 3a544522ac71786676524d973a7b0eb364bea07ad100438f583e72ef4ba531d3531790a55155372224d817ad70892ed13da55d9ac2ff9bc95a60b30ca7e56d2d |
memory/4848-8-0x0000000000DB0000-0x0000000000E0B000-memory.dmp
memory/4848-9-0x0000000000400000-0x000000000045B000-memory.dmp
memory/4848-11-0x0000000000400000-0x000000000045B000-memory.dmp
memory/4848-13-0x0000000000DB0000-0x0000000000E0B000-memory.dmp