Analysis
- max time kernel
61s - max time network
142s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
04/11/2022, 02:32
General
- Target file.exe
- Size 2.9MB
- Sample221104-c1ad3sccdk
- SHA256 217998f00ccab5ee010508891c87d365547d3b60e22deac98388d2fed721e2bc
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 12 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-TDEI2.tmp\is-389LU.tmp"C:\Users\Admin\AppData\Local\Temp\is-TDEI2.tmp\is-389LU.tmp" /SL4 $90028 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2805725 527362⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
-
C:\Program Files (x86)\fnSearcher\fnsearcher68.exe"C:\Program Files (x86)\fnSearcher\fnsearcher68.exe"3⤵
- Executes dropped EXE
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
fnsearcher68.exe
fnsearcher68.exe
_iscrypt.dll
is-389LU.tmp
is-389LU.tmp
memory/792-142-0x0000000000400000-0x0000000001670000-memory.dmp
memory/3276-132-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3276-137-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3276-143-0x0000000000400000-0x0000000000414000-memory.dmp