Analysis
- max time kernel
144s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
22/01/2024, 20:38
General
- Target efeb409d7348a8ddf4edf55f338a337b.exe
- Size 4.1MB
- Sample240122-zepcfadfc7
- SHA256 a56db7832e5a3bec917ddda893b1137d6a2da4732a0c74ef7e67d9c995ca2c17
Malware Config
Signatures
- Detect Socks5Systemz Payload 5 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 12 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\efeb409d7348a8ddf4edf55f338a337b.exe"C:\Users\Admin\AppData\Local\Temp\efeb409d7348a8ddf4edf55f338a337b.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-PPHJK.tmp\efeb409d7348a8ddf4edf55f338a337b.tmp"C:\Users\Admin\AppData\Local\Temp\is-PPHJK.tmp\efeb409d7348a8ddf4edf55f338a337b.tmp" /SL5="$501EA,4039110,598528,C:\Users\Admin\AppData\Local\Temp\efeb409d7348a8ddf4edf55f338a337b.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\system32\schtasks.exe" /Delete /F /TN "XPSL1223"3⤵
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C:\Users\Admin\AppData\Local\XPlay Standard Library\xplaystdlib.exe"C:\Users\Admin\AppData\Local\XPlay Standard Library\xplaystdlib.exe" -i3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\XPlay Standard Library\xplaystdlib.exe"C:\Users\Admin\AppData\Local\XPlay Standard Library\xplaystdlib.exe" -s3⤵
- Executes dropped EXE
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
_iscrypt.dll
efeb409d7348a8ddf4edf55f338a337b.tmp
xplaystdlib.exe
xplaystdlib.exe
xplaystdlib.exe
memory/1172-0-0x0000000000400000-0x0000000000499000-memory.dmp
memory/1172-146-0x0000000000400000-0x0000000000499000-memory.dmp
memory/1632-173-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/1632-162-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/1632-198-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/1632-195-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/1632-145-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/1632-191-0x00000000009C0000-0x0000000000A62000-memory.dmp
memory/1632-190-0x00000000009C0000-0x0000000000A62000-memory.dmp
memory/1632-148-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/1632-189-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/1632-152-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/1632-153-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/1632-156-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/1632-159-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/1632-186-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/1632-165-0x00000000009C0000-0x0000000000A62000-memory.dmp
memory/1632-166-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/1632-168-0x00000000009C0000-0x0000000000A62000-memory.dmp
memory/1632-183-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/1632-176-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/1632-177-0x00000000009C0000-0x0000000000A62000-memory.dmp
memory/1632-180-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/4684-141-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/4684-138-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/4684-139-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/4684-142-0x0000000000400000-0x00000000007EC000-memory.dmp
memory/5020-9-0x0000000002210000-0x0000000002211000-memory.dmp
memory/5020-149-0x0000000002210000-0x0000000002211000-memory.dmp
memory/5020-147-0x0000000000400000-0x00000000004BD000-memory.dmp