Analysis
- max time kernel
152s - max time network
158s - platform
windows10-2004_x64 - resource
win10v2004-20231215-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 2 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.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-EA1LU.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-EA1LU.tmp\file.tmp" /SL5="$90050,3964783,583680,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
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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
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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
file.tmp
_iscrypt.dll
wmadecoderoutine.exe
wmadecoderoutine.exe
wmadecoderoutine.exe
memory/2532-0-0x0000000000400000-0x0000000000495000-memory.dmp
memory/2532-147-0x0000000000400000-0x0000000000495000-memory.dmp
memory/2624-146-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2624-180-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2624-186-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2624-193-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2624-144-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2624-179-0x0000000000B70000-0x0000000000C12000-memory.dmp
memory/2624-196-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2624-183-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2624-149-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2624-189-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2624-153-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2624-156-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2624-157-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2624-160-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2624-163-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2624-166-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2624-168-0x0000000000B70000-0x0000000000C12000-memory.dmp
memory/2624-173-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/2624-176-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/3316-141-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/3316-142-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/3316-139-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/3316-138-0x0000000000400000-0x00000000007B6000-memory.dmp
memory/5004-151-0x0000000002200000-0x0000000002201000-memory.dmp
memory/5004-148-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/5004-6-0x0000000002200000-0x0000000002201000-memory.dmp