Analysis
- max time kernel
598s - max time network
601s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
10/04/2024, 03:10
General
- Target a41982f4915a70f246b0d6109280f39b.exe
- Size 209KB
- Sample240410-dpbcnsfg8y
- SHA256 31cdb1024e6010e5a59c0fc509432e6928c4eaf1a42c82e9fbd33e9aac2c552c
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\a41982f4915a70f246b0d6109280f39b.exe"C:\Users\Admin\AppData\Local\Temp\a41982f4915a70f246b0d6109280f39b.exe"1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4244 -s 4882⤵
- Program crash
-
-
C:\ProgramData\gtoex\aeknqwa.exeC:\ProgramData\gtoex\aeknqwa.exe start1⤵
- Executes dropped EXE
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4244 -ip 42441⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
aeknqwa.exe
memory/1388-10-0x00000000047C0000-0x00000000048C0000-memory.dmp
memory/1388-11-0x00000000001C0000-0x00000000001C9000-memory.dmp
memory/1388-13-0x0000000000400000-0x00000000045F0000-memory.dmp
memory/1388-17-0x00000000047C0000-0x00000000048C0000-memory.dmp
memory/4244-1-0x0000000004800000-0x0000000004900000-memory.dmp
memory/4244-2-0x00000000001C0000-0x00000000001C9000-memory.dmp
memory/4244-9-0x0000000000400000-0x00000000045F0000-memory.dmp
memory/4244-14-0x0000000004800000-0x0000000004900000-memory.dmp
memory/4244-24-0x0000000000400000-0x00000000045F0000-memory.dmp