Analysis
- max time kernel
158s - max time network
168s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
22/01/2024, 08:43
General
- Target 0cc30e36cc637e58388f36d4dfc19066.exe
- Size 4.2MB
- Sample240122-kmk8escdek
- SHA256 5fb04dd2f4c026af1ac7a9ec258f029367eb227c8e0ae8e854f33544868bf0bd
Malware Config
Signatures
- Detect Socks5Systemz Payload 2 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 3 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
-
C:\Users\Admin\AppData\Local\Temp\0cc30e36cc637e58388f36d4dfc19066.exe"C:\Users\Admin\AppData\Local\Temp\0cc30e36cc637e58388f36d4dfc19066.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-9QQTJ.tmp\0cc30e36cc637e58388f36d4dfc19066.tmp"C:\Users\Admin\AppData\Local\Temp\is-9QQTJ.tmp\0cc30e36cc637e58388f36d4dfc19066.tmp" /SL5="$7011E,4183318,219136,C:\Users\Admin\AppData\Local\Temp\0cc30e36cc637e58388f36d4dfc19066.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 "XMLFV1221"3⤵
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C:\Users\Admin\AppData\Local\XML Format Viewer\xmlformatviewer.exe"C:\Users\Admin\AppData\Local\XML Format Viewer\xmlformatviewer.exe" -i3⤵
- Executes dropped EXE
-
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C:\Users\Admin\AppData\Local\XML Format Viewer\xmlformatviewer.exe"C:\Users\Admin\AppData\Local\XML Format Viewer\xmlformatviewer.exe" -s3⤵
- Executes dropped EXE
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
_iscrypt.dll
_isdecmp.dll
0cc30e36cc637e58388f36d4dfc19066.tmp
xmlformatviewer.exe
memory/1480-160-0x0000000000400000-0x00000000007EF000-memory.dmp
memory/1480-177-0x0000000000400000-0x00000000007EF000-memory.dmp
memory/1480-201-0x0000000000400000-0x00000000007EF000-memory.dmp
memory/1480-199-0x0000000000400000-0x00000000007EF000-memory.dmp
memory/1480-196-0x0000000000400000-0x00000000007EF000-memory.dmp
memory/1480-193-0x0000000000400000-0x00000000007EF000-memory.dmp
memory/1480-190-0x0000000000A50000-0x0000000000AF2000-memory.dmp
memory/1480-188-0x0000000000400000-0x00000000007EF000-memory.dmp
memory/1480-186-0x0000000000400000-0x00000000007EF000-memory.dmp
memory/1480-156-0x0000000000400000-0x00000000007EF000-memory.dmp
memory/1480-180-0x0000000000A50000-0x0000000000AF2000-memory.dmp
memory/1480-175-0x0000000000400000-0x00000000007EF000-memory.dmp
memory/1480-173-0x0000000000400000-0x00000000007EF000-memory.dmp
memory/1480-165-0x0000000000400000-0x00000000007EF000-memory.dmp
memory/1480-166-0x0000000000400000-0x00000000007EF000-memory.dmp
memory/1480-167-0x0000000000400000-0x00000000007EF000-memory.dmp
memory/1480-170-0x0000000000400000-0x00000000007EF000-memory.dmp
memory/1768-153-0x0000000000400000-0x00000000007EF000-memory.dmp
memory/1768-151-0x0000000000400000-0x00000000007EF000-memory.dmp
memory/1768-150-0x0000000000400000-0x00000000007EF000-memory.dmp
memory/1768-149-0x0000000000400000-0x00000000007EF000-memory.dmp
memory/2400-0-0x0000000000400000-0x000000000043C000-memory.dmp
memory/2400-3-0x0000000000400000-0x000000000043C000-memory.dmp
memory/2400-23-0x0000000000400000-0x000000000043C000-memory.dmp
memory/4448-159-0x0000000000760000-0x0000000000761000-memory.dmp
memory/4448-7-0x0000000000760000-0x0000000000761000-memory.dmp
memory/4448-158-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/4448-24-0x0000000000400000-0x00000000004BD000-memory.dmp