Analysis
- max time kernel
146s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20240508-en - resource tags
- submitted
08/06/2024, 14:49
General
- Target 14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.exe
- Size 4.6MB
- Sample240608-r617bacf2w
- SHA256 14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81
Malware Config
Extracted
-
socks5systemz
-
bpyfoui.com
-
http://bpyfoui.com/search/?q=67e28dd8380ffb281106fa1d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978fe71ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff819c5e7979b3a
-
http://bpyfoui.com/search/?q=67e28dd8380ffb281106fa1d7c27d78406abdd88be4b12eab517aa5c96bd86e993834a865a8bbc896c58e713bc90c91936b5281fc235a925ed3e5dd6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee92923ec56d9717
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\14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.exe"C:\Users\Admin\AppData\Local\Temp\14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-G8OUC.tmp\14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.tmp"C:\Users\Admin\AppData\Local\Temp\is-G8OUC.tmp\14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.tmp" /SL5="$40212,4583943,54272,C:\Users\Admin\AppData\Local\Temp\14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
lesserextent32.exe
14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.tmp
_iscrypt.dll
memory/568-68-0x0000000000400000-0x0000000000414000-memory.dmp
memory/568-3-0x0000000000401000-0x000000000040B000-memory.dmp
memory/568-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1892-94-0x0000000000400000-0x00000000006BC000-memory.dmp
memory/1892-86-0x00000000009F0000-0x0000000000A92000-memory.dmp
memory/1892-118-0x0000000000400000-0x00000000006BC000-memory.dmp
memory/1892-115-0x0000000000400000-0x00000000006BC000-memory.dmp
memory/1892-67-0x0000000000400000-0x00000000006BC000-memory.dmp
memory/1892-111-0x00000000009F0000-0x0000000000A92000-memory.dmp
memory/1892-110-0x00000000009F0000-0x0000000000A92000-memory.dmp
memory/1892-70-0x0000000000400000-0x00000000006BC000-memory.dmp
memory/1892-73-0x0000000000400000-0x00000000006BC000-memory.dmp
memory/1892-74-0x0000000000400000-0x00000000006BC000-memory.dmp
memory/1892-77-0x0000000000400000-0x00000000006BC000-memory.dmp
memory/1892-80-0x0000000000400000-0x00000000006BC000-memory.dmp
memory/1892-83-0x0000000000400000-0x00000000006BC000-memory.dmp
memory/1892-109-0x0000000000400000-0x00000000006BC000-memory.dmp
memory/1892-89-0x0000000000400000-0x00000000006BC000-memory.dmp
memory/1892-106-0x0000000000400000-0x00000000006BC000-memory.dmp
memory/1892-97-0x0000000000400000-0x00000000006BC000-memory.dmp
memory/1892-100-0x0000000000400000-0x00000000006BC000-memory.dmp
memory/1892-103-0x0000000000400000-0x00000000006BC000-memory.dmp
memory/2644-16-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2644-69-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/3156-64-0x0000000000400000-0x00000000006BC000-memory.dmp
memory/3156-63-0x0000000000400000-0x00000000006BC000-memory.dmp
memory/3156-59-0x0000000000400000-0x00000000006BC000-memory.dmp
memory/3156-60-0x0000000000400000-0x00000000006BC000-memory.dmp