Analysis
- max time kernel
295s - max time network
300s - platform
windows10-2004_x64 - resource
win10v2004-20240412-en - resource tags
- submitted
16/04/2024, 11:08
General
- Target 046e029c41ac8987649a05e98db75a462e6d42f5f32e871f907036d23ec2d701.exe
- Size 212KB
- Sample240416-m8lr7agh22
- SHA256 046e029c41ac8987649a05e98db75a462e6d42f5f32e871f907036d23ec2d701
Malware Config
Extracted
-
systembc
-
yan0212.com:4039
-
yan0212.net:4039
Signatures
- SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
- Executes dropped EXE 1 IoCs
- UPX packed file 1 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Uses Tor communications 1 TTPs
Malware can proxy its traffic through Tor for more anonymity.
- Drops file in Windows directory 2 IoCs
- Program crash 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\046e029c41ac8987649a05e98db75a462e6d42f5f32e871f907036d23ec2d701.exe"C:\Users\Admin\AppData\Local\Temp\046e029c41ac8987649a05e98db75a462e6d42f5f32e871f907036d23ec2d701.exe"1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4988 -s 9482⤵
- Program crash
-
-
C:\ProgramData\pqmlf\bashk.exeC:\ProgramData\pqmlf\bashk.exe start1⤵
- Executes dropped EXE
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4988 -ip 49881⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
bashk.exe
memory/3096-10-0x0000000004920000-0x0000000004A20000-memory.dmp
memory/3096-11-0x00000000001C0000-0x00000000001C9000-memory.dmp
memory/3096-13-0x0000000000400000-0x00000000045F0000-memory.dmp
memory/3096-17-0x0000000004920000-0x0000000004A20000-memory.dmp
memory/4988-1-0x0000000004620000-0x0000000004720000-memory.dmp
memory/4988-2-0x00000000001C0000-0x00000000001C9000-memory.dmp
memory/4988-9-0x0000000000400000-0x00000000045F0000-memory.dmp
memory/4988-14-0x0000000004620000-0x0000000004720000-memory.dmp
memory/4988-25-0x0000000000400000-0x00000000045F0000-memory.dmp