Analysis
- max time kernel
149s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
21/12/2022, 04:16
General
- Target file.exe
- Size 1.6MB
- Sample221221-evs1caef91
- SHA256 0b98805c18e5784fa2f3e64ed231d352083c2e14ec513cfbdc48441d54fe6079
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-4EPU4.tmp\is-2TLJ8.tmp"C:\Users\Admin\AppData\Local\Temp\is-4EPU4.tmp\is-2TLJ8.tmp" /SL4 $B0050 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1472114 517122⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
-
C:\Program Files (x86)\Split Files\SplitFiles116.exe"C:\Program Files (x86)\Split Files\SplitFiles116.exe"3⤵
- Executes dropped EXE
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
SplitFiles116.exe
SplitFiles116.exe
is-2TLJ8.tmp
is-2TLJ8.tmp
_iscrypt.dll
memory/4800-132-0x0000000000400000-0x0000000000413000-memory.dmp
memory/4800-134-0x0000000000400000-0x0000000000413000-memory.dmp
memory/4800-143-0x0000000000400000-0x0000000000413000-memory.dmp
memory/4832-142-0x0000000000400000-0x000000000150C000-memory.dmp