Resubmissions
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240415-nfa1nada961010/04/2024, 03:13
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231222-bb35escaf610Analysis
- max time kernel
148s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20231222-en - resource tags
- submitted
22/12/2023, 00:59
General
- Target 3e58382005322606bd6ae12da2f209b1.exe
- Size 209KB
- Sample231222-bb35escaf6
- SHA256 9ab42dd0edbb92405904350c550525878312858405e737c7414025dab5981c80
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 2 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\3e58382005322606bd6ae12da2f209b1.exe"C:\Users\Admin\AppData\Local\Temp\3e58382005322606bd6ae12da2f209b1.exe"1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2304 -s 9282⤵
- Program crash
-
-
C:\ProgramData\cvqjk\evag.exeC:\ProgramData\cvqjk\evag.exe start1⤵
- Executes dropped EXE
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2304 -ip 23041⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
evag.exe
evag.exe
memory/2304-2-0x00000000001C0000-0x00000000001C9000-memory.dmp
memory/2304-1-0x0000000004770000-0x0000000004870000-memory.dmp
memory/2304-9-0x0000000000400000-0x00000000045F0000-memory.dmp
memory/2304-14-0x0000000004770000-0x0000000004870000-memory.dmp
memory/2304-25-0x0000000000400000-0x00000000045F0000-memory.dmp
memory/4552-11-0x00000000001C0000-0x00000000001C9000-memory.dmp
memory/4552-10-0x0000000004930000-0x0000000004A30000-memory.dmp
memory/4552-13-0x0000000000400000-0x00000000045F0000-memory.dmp
memory/4552-17-0x0000000004930000-0x0000000004A30000-memory.dmp