Resubmissions
17/04/2024, 09:26
240417-lee7waah531017/04/2024, 09:26
240417-leddaaah471017/04/2024, 09:26
240417-lec3hsce2w1017/04/2024, 09:26
240417-lecfzsce2v1017/04/2024, 09:26
240417-lebvfsah451016/04/2024, 13:38
240416-qxqhsada2110Analysis
- max time kernel
1799s - max time network
1801s - platform
windows10-2004_x64 - resource
win10v2004-20240412-en - resource tags
- submitted
17/04/2024, 09:26
General
- Target 7c05833514baa8de4f997a7fcb04096316f2fb44d77fcc0951bb50adbf8d58f5.exe
- Size 1.0MB
- Sample240417-leddaaah47
- SHA256 7c05833514baa8de4f997a7fcb04096316f2fb44d77fcc0951bb50adbf8d58f5
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
- Unexpected DNS network traffic destination 2 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
- Program crash 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\7c05833514baa8de4f997a7fcb04096316f2fb44d77fcc0951bb50adbf8d58f5.exe"C:\Users\Admin\AppData\Local\Temp\7c05833514baa8de4f997a7fcb04096316f2fb44d77fcc0951bb50adbf8d58f5.exe"1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2996 -s 4842⤵
- Program crash
-
-
C:\ProgramData\pxcqjn\xtwxaeg.exeC:\ProgramData\pxcqjn\xtwxaeg.exe start1⤵
- Executes dropped EXE
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2996 -ip 29961⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
xtwxaeg.exe
memory/2996-0-0x0000000000400000-0x00000000045E6000-memory.dmp
memory/2996-2-0x0000000004790000-0x0000000004890000-memory.dmp
memory/2996-3-0x00000000001C0000-0x00000000001C9000-memory.dmp
memory/2996-11-0x0000000000400000-0x00000000045E6000-memory.dmp
memory/2996-16-0x0000000004790000-0x0000000004890000-memory.dmp
memory/2996-27-0x0000000000400000-0x00000000045E6000-memory.dmp
memory/3476-12-0x0000000004990000-0x0000000004A90000-memory.dmp
memory/3476-13-0x00000000001C0000-0x00000000001C9000-memory.dmp
memory/3476-15-0x0000000000400000-0x00000000045E6000-memory.dmp
memory/3476-19-0x0000000004990000-0x0000000004A90000-memory.dmp