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13/04/2024, 09:24
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240413-lbdvmsfe711009/04/2024, 08:13
240409-j4mxxaad331009/04/2024, 08:13
240409-j4ml5sad321009/04/2024, 08:13
240409-j4l1lsad291009/04/2024, 08:13
240409-j4lpvaad2810Analysis
- max time kernel
1202s - max time network
1211s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
09/04/2024, 08:13
General
- Target sample.exe
- Size 171KB
- Sample240409-j4ml5sad32
- SHA256 c68035aabbe9b80ace209290aa28b8108cbb03a9d6a6301eb9a8d638db024ad0
Malware Config
Extracted
-
systembc
-
admex175x.xyz:4044
-
servx278x.xyz:4044
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\sample.exe"C:\Users\Admin\AppData\Local\Temp\sample.exe"1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
-
C:\ProgramData\wqktk\uglttrm.exeC:\ProgramData\wqktk\uglttrm.exe start1⤵
- Executes dropped EXE
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
uglttrm.exe
memory/1000-1-0x00000000053B0000-0x00000000054B0000-memory.dmp
memory/1000-2-0x00000000051B0000-0x00000000051B9000-memory.dmp
memory/1000-9-0x0000000000400000-0x0000000005162000-memory.dmp
memory/1000-14-0x00000000053B0000-0x00000000054B0000-memory.dmp
memory/3728-10-0x00000000051D0000-0x00000000052D0000-memory.dmp
memory/3728-11-0x00000000051B0000-0x00000000051B9000-memory.dmp
memory/3728-13-0x0000000000400000-0x0000000005162000-memory.dmp
memory/3728-17-0x00000000051D0000-0x00000000052D0000-memory.dmp