Analysis
- max time kernel
120s - max time network
96s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
08/11/2024, 00:45
General
- Target c144d7a9c370793b8a486c76692f219d14136e65366ae86c93a49c341831761aN.exe
- Size 5.6MB
- Sample241108-a365qa1fmm
- SHA256 c144d7a9c370793b8a486c76692f219d14136e65366ae86c93a49c341831761a
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 1 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Socks5systemz family
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 1 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).
- System Location Discovery: System Language Discovery 1 TTPs 6 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Runs net.exe
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\c144d7a9c370793b8a486c76692f219d14136e65366ae86c93a49c341831761aN.exe"C:\Users\Admin\AppData\Local\Temp\c144d7a9c370793b8a486c76692f219d14136e65366ae86c93a49c341831761aN.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-DC6OL.tmp\is-MF8LM.tmp"C:\Users\Admin\AppData\Local\Temp\is-DC6OL.tmp\is-MF8LM.tmp" /SL4 $801E0 "C:\Users\Admin\AppData\Local\Temp\c144d7a9c370793b8a486c76692f219d14136e65366ae86c93a49c341831761aN.exe" 5597940 1418242⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\net.exe"C:\Windows\system32\net.exe" helpmsg 23⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 helpmsg 24⤵
- System Location Discovery: System Language Discovery
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-
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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
- System Location Discovery: System Language Discovery
-
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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
- System Location Discovery: System Language Discovery
-
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
IsoBuster_1121.exe
_iscrypt.dll
is-MF8LM.tmp
memory/440-87-0x0000000000400000-0x000000000086F000-memory.dmp
memory/440-82-0x0000000000400000-0x000000000086F000-memory.dmp
memory/440-84-0x0000000000400000-0x000000000086F000-memory.dmp
memory/3120-91-0x0000000000400000-0x00000000004CF000-memory.dmp
memory/3120-7-0x0000000000400000-0x00000000004CF000-memory.dmp
memory/4916-94-0x0000000000400000-0x000000000086F000-memory.dmp
memory/4916-110-0x0000000000BF0000-0x0000000000C94000-memory.dmp
memory/4916-126-0x0000000000400000-0x000000000086F000-memory.dmp
memory/4916-123-0x0000000000400000-0x000000000086F000-memory.dmp
memory/4916-120-0x0000000000400000-0x000000000086F000-memory.dmp
memory/4916-97-0x0000000000400000-0x000000000086F000-memory.dmp
memory/4916-100-0x0000000000400000-0x000000000086F000-memory.dmp
memory/4916-103-0x0000000000400000-0x000000000086F000-memory.dmp
memory/4916-106-0x0000000000400000-0x000000000086F000-memory.dmp
memory/4916-109-0x0000000000400000-0x000000000086F000-memory.dmp
memory/4916-89-0x0000000000400000-0x000000000086F000-memory.dmp
memory/4916-114-0x0000000000400000-0x000000000086F000-memory.dmp
memory/4916-117-0x0000000000400000-0x000000000086F000-memory.dmp
memory/4992-2-0x0000000000401000-0x000000000040A000-memory.dmp
memory/4992-92-0x0000000000400000-0x0000000000429000-memory.dmp
memory/4992-0-0x0000000000400000-0x0000000000429000-memory.dmp