Analysis
- max time kernel
90s - max time network
110s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
05/01/2023, 00:31
General
- Target file.exe
- Size 2.0MB
- Sample230105-at2tmsdf4s
- SHA256 ca789cb4a45ec1ab2cbe7995358bba98c6ff53161068beac10a1bf52a5a340f4
Score
8/10
Malware Config
Signatures
- Executes dropped EXE 2 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 17 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
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-7RTGR.tmp\is-CS0EK.tmp"C:\Users\Admin\AppData\Local\Temp\is-7RTGR.tmp\is-CS0EK.tmp" /SL4 $D0066 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1816234 3174402⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
-
C:\Program Files (x86)\Split Files\SplitFiles130.exe"C:\Program Files (x86)\Split Files\SplitFiles130.exe"3⤵
- Executes dropped EXE
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
SplitFiles130.exe
SplitFiles130.exe
is-CS0EK.tmp
is-CS0EK.tmp
_iscrypt.dll
memory/1800-132-0x0000000000400000-0x0000000000454000-memory.dmp
memory/1800-138-0x0000000000400000-0x0000000000454000-memory.dmp
memory/1800-144-0x0000000000400000-0x0000000000454000-memory.dmp
memory/3524-142-0x0000000000400000-0x000000000154A000-memory.dmp
memory/3524-143-0x0000000000400000-0x000000000154A000-memory.dmp