Analysis
- max time kernel
147s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20240508-en - resource tags
- submitted
22/06/2024, 15:00
General
- Target 617e5737514544ce8cf9186056e930ef2d710ab9c9d9b05c09e8d3c83b0cdb93.exe
- Size 4.6MB
- Sample240622-sdblmasdkg
- SHA256 617e5737514544ce8cf9186056e930ef2d710ab9c9d9b05c09e8d3c83b0cdb93
Malware Config
Extracted
-
socks5systemz
-
beuowbv.com
Signatures
- Detect Socks5Systemz Payload 1 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 1 IoCs
- Unexpected DNS network traffic destination 3 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\617e5737514544ce8cf9186056e930ef2d710ab9c9d9b05c09e8d3c83b0cdb93.exe"C:\Users\Admin\AppData\Local\Temp\617e5737514544ce8cf9186056e930ef2d710ab9c9d9b05c09e8d3c83b0cdb93.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-FNAU0.tmp\617e5737514544ce8cf9186056e930ef2d710ab9c9d9b05c09e8d3c83b0cdb93.tmp"C:\Users\Admin\AppData\Local\Temp\is-FNAU0.tmp\617e5737514544ce8cf9186056e930ef2d710ab9c9d9b05c09e8d3c83b0cdb93.tmp" /SL5="$501E6,4527669,54272,C:\Users\Admin\AppData\Local\Temp\617e5737514544ce8cf9186056e930ef2d710ab9c9d9b05c09e8d3c83b0cdb93.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Free Audio Extractor\freeaudioextractor32.exe"C:\Users\Admin\AppData\Local\Free Audio Extractor\freeaudioextractor32.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Free Audio Extractor\freeaudioextractor32.exe"C:\Users\Admin\AppData\Local\Free Audio Extractor\freeaudioextractor32.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
freeaudioextractor32.exe
617e5737514544ce8cf9186056e930ef2d710ab9c9d9b05c09e8d3c83b0cdb93.tmp
_iscrypt.dll
memory/1008-60-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1008-65-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1008-63-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1008-59-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1240-72-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1240-99-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1240-117-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1240-67-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1240-69-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1240-114-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1240-111-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1240-108-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1240-75-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1240-76-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1240-79-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1240-82-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1240-85-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1240-87-0x0000000000A20000-0x0000000000AC2000-memory.dmp
memory/1240-90-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1240-96-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1240-105-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/1240-102-0x0000000000400000-0x00000000006BB000-memory.dmp
memory/3468-13-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/3468-71-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/4404-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4404-70-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4404-2-0x0000000000401000-0x000000000040B000-memory.dmp