Analysis
- max time kernel
291s - max time network
298s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
13/06/2024, 22:50
General
- Target 4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.exe
- Size 4.8MB
- Sample240613-2srqtsxfkr
- SHA256 4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6
Malware Config
Extracted
-
socks5systemz
-
befpfie.com
-
http://befpfie.com/search/?q=67e28dd86c0ca77c400cfe4c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa44e8889b5e4fa9281ae978f271ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff712c1e694983e
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 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\4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.exe"C:\Users\Admin\AppData\Local\Temp\4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-6BFIP.tmp\4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp"C:\Users\Admin\AppData\Local\Temp\is-6BFIP.tmp\4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp" /SL5="$2101DE,4767252,54272,C:\Users\Admin\AppData\Local\Temp\4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe"C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe"C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
audioconverter32.exe
4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp
_iscrypt.dll
memory/804-12-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/804-68-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/1020-67-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1020-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/1020-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2020-106-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2020-91-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2020-128-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2020-125-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2020-69-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2020-72-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2020-75-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2020-78-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2020-81-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2020-84-0x0000000000910000-0x00000000009B2000-memory.dmp
memory/2020-86-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2020-66-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2020-94-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2020-97-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2020-100-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2020-103-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2020-122-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2020-110-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2020-113-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2020-116-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2020-119-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2824-59-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2824-60-0x0000000000400000-0x00000000006E9000-memory.dmp
memory/2824-63-0x0000000000400000-0x00000000006E9000-memory.dmp