Resubmissions
15/04/2024, 11:31
240415-nmzycsff4y1010/04/2024, 04:57
240410-fljwradc861010/04/2024, 04:57
240410-flcsfadc821010/04/2024, 04:57
240410-flb6xadc781010/04/2024, 04:57
240410-flbkdadc771019/12/2023, 13:06
231219-qcfg3sadbq10Analysis
- max time kernel
1798s - max time network
1800s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
10/04/2024, 04:57
General
- Target 2d3ba7dd14b9a579b2626fa5baee19bd.exe
- Size 209KB
- Sample240410-flcsfadc82
- SHA256 42a191ee4f9593db8f514cce85ad8b9d6533bc71983a9529e7a5d68764d21679
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.
- Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
- 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
- Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2d3ba7dd14b9a579b2626fa5baee19bd.exe"C:\Users\Admin\AppData\Local\Temp\2d3ba7dd14b9a579b2626fa5baee19bd.exe"1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
-
C:\ProgramData\axhpwg\jncfumb.exeC:\ProgramData\axhpwg\jncfumb.exe start1⤵
- Executes dropped EXE
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
jncfumb.exe
memory/212-10-0x00000000046B0000-0x00000000047B0000-memory.dmp
memory/212-11-0x00000000001C0000-0x00000000001C9000-memory.dmp
memory/212-13-0x0000000000400000-0x00000000045F0000-memory.dmp
memory/212-17-0x00000000046B0000-0x00000000047B0000-memory.dmp
memory/2824-2-0x00000000001C0000-0x00000000001C9000-memory.dmp
memory/2824-1-0x00000000047D0000-0x00000000048D0000-memory.dmp
memory/2824-9-0x0000000000400000-0x00000000045F0000-memory.dmp
memory/2824-14-0x00000000047D0000-0x00000000048D0000-memory.dmp