Analysis
- max time kernel
142s - max time network
128s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
28/05/2024, 08:21
General
- Target 8876d713f69b92d6c54390c72462ac50010b81a8cd5d7d8f8b09146b0c163837.exe
- Size 4.7MB
- Sample240528-j81dssdd86
- SHA256 8876d713f69b92d6c54390c72462ac50010b81a8cd5d7d8f8b09146b0c163837
Malware Config
Signatures
- Detect Socks5Systemz Payload 3 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 1 IoCs
- Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\8876d713f69b92d6c54390c72462ac50010b81a8cd5d7d8f8b09146b0c163837.exe"C:\Users\Admin\AppData\Local\Temp\8876d713f69b92d6c54390c72462ac50010b81a8cd5d7d8f8b09146b0c163837.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-7HA2G.tmp\8876d713f69b92d6c54390c72462ac50010b81a8cd5d7d8f8b09146b0c163837.tmp"C:\Users\Admin\AppData\Local\Temp\is-7HA2G.tmp\8876d713f69b92d6c54390c72462ac50010b81a8cd5d7d8f8b09146b0c163837.tmp" /SL5="$4023A,4666367,54272,C:\Users\Admin\AppData\Local\Temp\8876d713f69b92d6c54390c72462ac50010b81a8cd5d7d8f8b09146b0c163837.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Stereo Tool\stereotool.exe"C:\Users\Admin\AppData\Local\Stereo Tool\stereotool.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Stereo Tool\stereotool.exe"C:\Users\Admin\AppData\Local\Stereo Tool\stereotool.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
stereotool.exe
8876d713f69b92d6c54390c72462ac50010b81a8cd5d7d8f8b09146b0c163837.tmp
_iscrypt.dll
memory/1140-69-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1140-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/1140-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1556-59-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/1556-64-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/1556-60-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/1556-63-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/1628-16-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/1628-70-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/3296-75-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/3296-90-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/3296-71-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/3296-74-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/3296-67-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/3296-78-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/3296-81-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/3296-84-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/3296-87-0x0000000002850000-0x00000000028F2000-memory.dmp
memory/3296-68-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/3296-95-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/3296-98-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/3296-101-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/3296-104-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/3296-107-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/3296-110-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/3296-111-0x0000000002850000-0x00000000028F2000-memory.dmp
memory/3296-112-0x0000000002850000-0x00000000028F2000-memory.dmp
memory/3296-116-0x0000000000400000-0x00000000006D9000-memory.dmp
memory/3296-119-0x0000000000400000-0x00000000006D9000-memory.dmp