Analysis
- max time kernel
176s - max time network
209s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
09/12/2022, 17:48
General
- Target file.exe
- Size 2.3MB
- Sample221209-wdej3agf2x
- SHA256 2fb25f1140e00f81d5ff7d038cd0bb7d3dae789e25da8d4ee3aeb3de91161a6d
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 9 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
-
C:\Users\Admin\AppData\Local\Temp\is-80GK5.tmp\is-4A9A1.tmp"C:\Users\Admin\AppData\Local\Temp\is-80GK5.tmp\is-4A9A1.tmp" /SL4 $401B8 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2169129 962562⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
-
C:\Program Files (x86)\PrintFolders\ntFolders.exe"C:\Program Files (x86)\PrintFolders\ntFolders.exe"3⤵
- Executes dropped EXE
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
ntFolders.exe
ntFolders.exe
is-4A9A1.tmp
is-4A9A1.tmp
_iscrypt.dll
memory/2800-135-0x0000000000400000-0x000000000041E000-memory.dmp
memory/2800-140-0x0000000000400000-0x000000000041E000-memory.dmp
memory/2800-147-0x0000000000400000-0x000000000041E000-memory.dmp
memory/4928-145-0x0000000000400000-0x0000000001571000-memory.dmp
memory/4928-146-0x0000000000400000-0x0000000001571000-memory.dmp