Analysis
- max time kernel
141s - max time network
131s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
09/06/2024, 01:39
General
- Target 97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.exe
- Size 4.7MB
- Sample240609-b29d5abf7y
- SHA256 97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee
Malware Config
Extracted
-
socks5systemz
-
bvnbbxo.com
-
http://bvnbbxo.com/search/?q=67e28dd86b5bf57b435daf497c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978f271ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff819c9e8969b3b
-
http://bvnbbxo.com/search/?q=67e28dd86b5bf57b435daf497c27d78406abdd88be4b12eab517aa5c96bd86ef9d834b895a8bbc896c58e713bc90c91c36b5281fc235a925ed3e51d6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee929232ca6c9716
Signatures
- Detect Socks5Systemz Payload 3 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Detects executables packed with VMProtect. 19 IoCs
- 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\97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.exe"C:\Users\Admin\AppData\Local\Temp\97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-8HH27.tmp\97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmp"C:\Users\Admin\AppData\Local\Temp\is-8HH27.tmp\97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmp" /SL5="$B01CE,4661544,54272,C:\Users\Admin\AppData\Local\Temp\97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
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
_iscrypt.dll
97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmp
memory/2028-59-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/2028-64-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/2028-63-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/2028-60-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/2180-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2180-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/2180-68-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3076-73-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3076-93-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3076-117-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3076-67-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3076-114-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3076-74-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3076-77-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3076-80-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3076-83-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3076-86-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3076-87-0x00000000009D0000-0x0000000000A72000-memory.dmp
memory/3076-70-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3076-96-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3076-99-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3076-102-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3076-105-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3076-108-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3076-109-0x00000000009D0000-0x0000000000A72000-memory.dmp
memory/3076-110-0x00000000009D0000-0x0000000000A72000-memory.dmp
memory/3092-10-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/3092-69-0x0000000000400000-0x00000000004BA000-memory.dmp