Analysis
- max time kernel
607s - max time network
616s - platform
windows10-1703_x64 - resource
win10-20240404-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.
- 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\a41982f4915a70f246b0d6109280f39b.exe"C:\Users\Admin\AppData\Local\Temp\a41982f4915a70f246b0d6109280f39b.exe"1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
-
C:\ProgramData\qluujja\imtjej.exeC:\ProgramData\qluujja\imtjej.exe start1⤵
- Executes dropped EXE
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
imtjej.exe
memory/3108-10-0x0000000004770000-0x0000000004870000-memory.dmp
memory/3108-11-0x00000000001C0000-0x00000000001C9000-memory.dmp
memory/3108-13-0x0000000000400000-0x00000000045F0000-memory.dmp
memory/3108-17-0x0000000004770000-0x0000000004870000-memory.dmp
memory/4028-1-0x0000000004740000-0x0000000004840000-memory.dmp
memory/4028-2-0x00000000001C0000-0x00000000001C9000-memory.dmp
memory/4028-9-0x0000000000400000-0x00000000045F0000-memory.dmp
memory/4028-14-0x0000000004740000-0x0000000004840000-memory.dmp