Analysis
- max time kernel
143s - max time network
128s - platform
windows7_x64 - resource
win7-20231129-en - resource tags
- submitted
23/01/2024, 08:13
General
- Target file.exe
- Size 4.0MB
- Sample240123-j4earshdb8
- SHA256 55db36efc7a400313c3fd07bf612e67f1fda54492f9bfbf6209fc348b277c918
Malware Config
Signatures
- Detect Socks5Systemz Payload 4 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 5 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.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-L6T67.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-L6T67.tmp\file.tmp" /SL5="$400F0,3964783,583680,C:\Users\Admin\AppData\Local\Temp\file.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\WMA Decode compliant routine\wmadecoderoutine.exe"C:\Users\Admin\AppData\Local\WMA Decode compliant routine\wmadecoderoutine.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\WMA Decode compliant routine\wmadecoderoutine.exe"C:\Users\Admin\AppData\Local\WMA Decode compliant routine\wmadecoderoutine.exe" -s3⤵
- Executes dropped EXE
-
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
wmadecoderoutine.exe
wmadecoderoutine.exe
wmadecoderoutine.exe
_iscrypt.dll
_shfoldr.dll
file.tmp
wmadecoderoutine.exe
memory/1972-144-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/1972-143-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/1972-147-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/1972-148-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2232-153-0x0000000000400000-0x0000000000495000-memory.dmp
memory/2232-0-0x0000000000400000-0x0000000000495000-memory.dmp
memory/2428-155-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2428-190-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2428-152-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2428-205-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2428-202-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2428-198-0x0000000002630000-0x00000000026D2000-memory.dmp
memory/2428-197-0x0000000002630000-0x00000000026D2000-memory.dmp
memory/2428-196-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2428-160-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2428-161-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2428-164-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2428-167-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2428-170-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2428-173-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2428-174-0x0000000002630000-0x00000000026D2000-memory.dmp
memory/2428-180-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2428-183-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2428-184-0x0000000002630000-0x00000000026D2000-memory.dmp
memory/2428-187-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2428-150-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2428-193-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/3000-157-0x0000000005380000-0x0000000005736000-memory.dmp
memory/3000-156-0x0000000000240000-0x0000000000241000-memory.dmp
memory/3000-15-0x0000000000240000-0x0000000000241000-memory.dmp
memory/3000-154-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/3000-142-0x0000000005380000-0x0000000005736000-memory.dmp