Analysis
- max time kernel
141s - max time network
127s - platform
windows11-21h2_x64 - resource
win11-20240221-en - resource tags
- submitted
30/03/2024, 03:47
General
- Target 43f8674bdcf9db7103b91ae3d1d8d65cff4527bc90f79eeec90860166d3d536b.exe
- Size 1.9MB
- Sample240330-eb7pdsha22
- SHA256 43f8674bdcf9db7103b91ae3d1d8d65cff4527bc90f79eeec90860166d3d536b
Malware Config
Extracted
-
socks5systemz
-
http://bhfroed.com/search/?q=67e28dd86b55fb7a410dae497c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978a471ea771795af8e05c642db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe16c7ef919233
-
http://bhfroed.com/search/?q=67e28dd86b55fb7a410dae497c27d78406abdd88be4b12eab517aa5c96bd86ec95834d825a8bbc896c58e713bc90c91c36b5281fc235a925ed3e07d6bd974a95129070b611e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee949d3ccd6b9e1e
Signatures
- Detect Socks5Systemz Payload 5 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 WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\43f8674bdcf9db7103b91ae3d1d8d65cff4527bc90f79eeec90860166d3d536b.exe"C:\Users\Admin\AppData\Local\Temp\43f8674bdcf9db7103b91ae3d1d8d65cff4527bc90f79eeec90860166d3d536b.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-D5COE.tmp\43f8674bdcf9db7103b91ae3d1d8d65cff4527bc90f79eeec90860166d3d536b.tmp"C:\Users\Admin\AppData\Local\Temp\is-D5COE.tmp\43f8674bdcf9db7103b91ae3d1d8d65cff4527bc90f79eeec90860166d3d536b.tmp" /SL5="$50204,1663441,54272,C:\Users\Admin\AppData\Local\Temp\43f8674bdcf9db7103b91ae3d1d8d65cff4527bc90f79eeec90860166d3d536b.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Easy CD Audio Converter\easycdaudioconverter.exe"C:\Users\Admin\AppData\Local\Easy CD Audio Converter\easycdaudioconverter.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Easy CD Audio Converter\easycdaudioconverter.exe"C:\Users\Admin\AppData\Local\Easy CD Audio Converter\easycdaudioconverter.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
easycdaudioconverter.exe
43f8674bdcf9db7103b91ae3d1d8d65cff4527bc90f79eeec90860166d3d536b.tmp
_iscrypt.dll
memory/1008-77-0x00000000008F0000-0x0000000000992000-memory.dmp
memory/1008-63-0x00000000008F0000-0x0000000000992000-memory.dmp
memory/1008-98-0x0000000000400000-0x00000000005F1000-memory.dmp
memory/1008-95-0x0000000000400000-0x00000000005F1000-memory.dmp
memory/1008-91-0x00000000008F0000-0x0000000000992000-memory.dmp
memory/1008-90-0x00000000008F0000-0x0000000000992000-memory.dmp
memory/1008-45-0x0000000000400000-0x00000000005F1000-memory.dmp
memory/1008-89-0x0000000000400000-0x00000000005F1000-memory.dmp
memory/1008-86-0x0000000000400000-0x00000000005F1000-memory.dmp
memory/1008-48-0x0000000000400000-0x00000000005F1000-memory.dmp
memory/1008-83-0x0000000000400000-0x00000000005F1000-memory.dmp
memory/1008-52-0x0000000000400000-0x00000000005F1000-memory.dmp
memory/1008-53-0x0000000000400000-0x00000000005F1000-memory.dmp
memory/1008-56-0x0000000000400000-0x00000000005F1000-memory.dmp
memory/1008-59-0x0000000000400000-0x00000000005F1000-memory.dmp
memory/1008-76-0x0000000000400000-0x00000000005F1000-memory.dmp
memory/1008-80-0x0000000000400000-0x00000000005F1000-memory.dmp
memory/1008-67-0x0000000000400000-0x00000000005F1000-memory.dmp
memory/1008-68-0x00000000008F0000-0x0000000000992000-memory.dmp
memory/1008-73-0x0000000000400000-0x00000000005F1000-memory.dmp
memory/1008-62-0x0000000000400000-0x00000000005F1000-memory.dmp
memory/1308-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1308-46-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1308-2-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1788-42-0x0000000000400000-0x00000000005F1000-memory.dmp
memory/1788-38-0x0000000000400000-0x00000000005F1000-memory.dmp
memory/1788-39-0x0000000000400000-0x00000000005F1000-memory.dmp
memory/4816-7-0x0000000002340000-0x0000000002341000-memory.dmp
memory/4816-49-0x0000000002340000-0x0000000002341000-memory.dmp
memory/4816-47-0x0000000000400000-0x00000000004B8000-memory.dmp