Analysis
- max time kernel
141s - max time network
127s - platform
windows11-21h2_x64 - resource
win11-20240508-en - resource tags
- submitted
08/06/2024, 12:12
General
- Target 696c267887a55c1d922ce1d6f73d9b4d74b6d196c855eb63cc5bf0d3384aa3c3.exe
- Size 4.8MB
- Sample240608-pc9v9abe5t
- SHA256 696c267887a55c1d922ce1d6f73d9b4d74b6d196c855eb63cc5bf0d3384aa3c3
Malware Config
Extracted
-
socks5systemz
-
cszhdjd.net
-
http://cszhdjd.net/search/?q=67e28dd83f54f37a445aab4e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4be8889b5e4fa9281ae978f671ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff819c4e7929332
-
http://cszhdjd.net/search/?q=67e28dd83f54f37a445aab4e7c27d78406abdd88be4b12eab517aa5c96bd86ea97844496148ab2865b77f80ebad9c30f7cb63037ed2ab423a4334383ba915d911ec07bb606a0708727e40ea678c751bbe34efb0e2807e12571c17f3e83fe16c1e89d9e33ca669f
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\696c267887a55c1d922ce1d6f73d9b4d74b6d196c855eb63cc5bf0d3384aa3c3.exe"C:\Users\Admin\AppData\Local\Temp\696c267887a55c1d922ce1d6f73d9b4d74b6d196c855eb63cc5bf0d3384aa3c3.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-HS9TK.tmp\696c267887a55c1d922ce1d6f73d9b4d74b6d196c855eb63cc5bf0d3384aa3c3.tmp"C:\Users\Admin\AppData\Local\Temp\is-HS9TK.tmp\696c267887a55c1d922ce1d6f73d9b4d74b6d196c855eb63cc5bf0d3384aa3c3.tmp" /SL5="$50246,4797604,54272,C:\Users\Admin\AppData\Local\Temp\696c267887a55c1d922ce1d6f73d9b4d74b6d196c855eb63cc5bf0d3384aa3c3.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
696c267887a55c1d922ce1d6f73d9b4d74b6d196c855eb63cc5bf0d3384aa3c3.tmp
memory/132-3-0x0000000000401000-0x000000000040B000-memory.dmp
memory/132-1-0x0000000000400000-0x0000000000414000-memory.dmp
memory/132-68-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2324-59-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/2324-64-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/2324-60-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/2664-69-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2664-13-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/3348-76-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/3348-96-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/3348-73-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/3348-67-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/3348-79-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/3348-82-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/3348-84-0x0000000002520000-0x00000000025C2000-memory.dmp
memory/3348-88-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/3348-93-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/3348-70-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/3348-99-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/3348-102-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/3348-105-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/3348-108-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/3348-109-0x0000000002520000-0x00000000025C2000-memory.dmp
memory/3348-110-0x0000000002520000-0x00000000025C2000-memory.dmp
memory/3348-114-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/3348-117-0x0000000000400000-0x00000000006EC000-memory.dmp