Analysis
- max time kernel
141s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
09/01/2025, 00:26
General
- Target JaffaCakes118_b4d9f02fa75686adbfd3ee433b4a4203.exe
- Size 209KB
- Sample250109-arn5rssnbl
- SHA256 8163d2dd713dc31d3a0a234985d7dc735d1106783a401ce585508fefc56230dc
Malware Config
Extracted
-
systembc
-
yan0212.com:4039
-
yan0212.net:4039
Signatures
- SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
- Systembc family
- Executes dropped EXE 1 IoCs
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- UPX packed file 2 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Drops file in Windows directory 2 IoCs
- Program crash 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b4d9f02fa75686adbfd3ee433b4a4203.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b4d9f02fa75686adbfd3ee433b4a4203.exe"1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3052 -s 4842⤵
- Program crash
-
-
C:\ProgramData\tfkubg\ixmdbvk.exeC:\ProgramData\tfkubg\ixmdbvk.exe start1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3052 -ip 30521⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
ixmdbvk.exe
memory/3052-1-0x0000000000400000-0x00000000045F0000-memory.dmp
memory/3052-3-0x0000000000400000-0x000000000040B000-memory.dmp
memory/3052-2-0x00000000001C0000-0x00000000001C9000-memory.dmp
memory/3052-4-0x0000000000400000-0x00000000045F0000-memory.dmp
memory/3052-23-0x0000000000400000-0x00000000045F0000-memory.dmp
memory/3052-25-0x0000000000400000-0x000000000040B000-memory.dmp
memory/3728-13-0x0000000000400000-0x00000000045F0000-memory.dmp