Analysis
- max time kernel
149s - max time network
138s - platform
windows7_x64 - resource
win7-20240221-en - resource tags
- submitted
30/03/2024, 17:48
General
- Target 0d27d9acd1f0a0664f77f75b3d1080d40f8a04fdf1fcb2661a5778e184470814.exe
- Size 5.6MB
- Sample240330-wdr56aba21
- SHA256 0d27d9acd1f0a0664f77f75b3d1080d40f8a04fdf1fcb2661a5778e184470814
Malware Config
Extracted
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socks5systemz
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51.159.66.125
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217.23.6.51
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151.80.38.159
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217.23.9.168
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37.187.122.227
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rc4_key
heyfg645fdhwi
Signatures
- Detect Socks5Systemz Payload 3 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 10 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Drops file in Program Files directory 34 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Runs net.exe
- Suspicious use of WriteProcessMemory 35 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\0d27d9acd1f0a0664f77f75b3d1080d40f8a04fdf1fcb2661a5778e184470814.exe"C:\Users\Admin\AppData\Local\Temp\0d27d9acd1f0a0664f77f75b3d1080d40f8a04fdf1fcb2661a5778e184470814.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-PVMSE.tmp\is-M86SM.tmp"C:\Users\Admin\AppData\Local\Temp\is-PVMSE.tmp\is-M86SM.tmp" /SL4 $4010A "C:\Users\Admin\AppData\Local\Temp\0d27d9acd1f0a0664f77f75b3d1080d40f8a04fdf1fcb2661a5778e184470814.exe" 5597940 1418242⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\net.exe"C:\Windows\system32\net.exe" helpmsg 23⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 helpmsg 24⤵
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C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe"C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe" -i3⤵
- Executes dropped EXE
- Loads dropped DLL
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C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe"C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe" -s3⤵
- Executes dropped EXE
- Loads dropped DLL
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
IsoBuster_1121.exe
_iscrypt.dll
_shfoldr.dll
is-M86SM.tmp
memory/272-101-0x0000000001030000-0x000000000149F000-memory.dmp
memory/272-102-0x0000000000400000-0x000000000086F000-memory.dmp
memory/272-89-0x0000000001030000-0x000000000149F000-memory.dmp
memory/272-90-0x0000000001030000-0x000000000149F000-memory.dmp
memory/272-91-0x0000000000400000-0x000000000086F000-memory.dmp
memory/272-92-0x0000000000400000-0x000000000086F000-memory.dmp
memory/272-94-0x0000000000400000-0x000000000086F000-memory.dmp
memory/2368-113-0x0000000000400000-0x000000000086F000-memory.dmp
memory/2368-140-0x0000000000400000-0x000000000086F000-memory.dmp
memory/2368-153-0x0000000000400000-0x000000000086F000-memory.dmp
memory/2368-150-0x0000000000400000-0x000000000086F000-memory.dmp
memory/2368-147-0x0000000000400000-0x000000000086F000-memory.dmp
memory/2368-108-0x0000000000400000-0x000000000086F000-memory.dmp
memory/2368-112-0x0000000000400000-0x000000000086F000-memory.dmp
memory/2368-144-0x0000000000400000-0x000000000086F000-memory.dmp
memory/2368-116-0x0000000000400000-0x000000000086F000-memory.dmp
memory/2368-119-0x0000000001180000-0x00000000015EF000-memory.dmp
memory/2368-120-0x0000000000400000-0x000000000086F000-memory.dmp
memory/2368-121-0x0000000000400000-0x000000000086F000-memory.dmp
memory/2368-122-0x0000000000400000-0x000000000086F000-memory.dmp
memory/2368-125-0x0000000000400000-0x000000000086F000-memory.dmp
memory/2368-128-0x0000000000400000-0x000000000086F000-memory.dmp
memory/2368-131-0x0000000000400000-0x000000000086F000-memory.dmp
memory/2368-134-0x00000000029F0000-0x0000000002A94000-memory.dmp
memory/2368-135-0x00000000029F0000-0x0000000002A94000-memory.dmp
memory/2368-137-0x0000000000400000-0x000000000086F000-memory.dmp
memory/2368-143-0x00000000029F0000-0x0000000002A94000-memory.dmp
memory/2516-0-0x0000000000400000-0x0000000000429000-memory.dmp
memory/2516-95-0x0000000000400000-0x0000000000429000-memory.dmp
memory/2624-96-0x0000000000400000-0x00000000004CF000-memory.dmp
memory/2624-105-0x00000000036E0000-0x0000000003B4F000-memory.dmp
memory/2624-85-0x00000000036E0000-0x0000000003B4F000-memory.dmp