Analysis
- max time kernel
90s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
02/11/2022, 12:17
General
- Target file.exe
- Size 2.5MB
- Sample221102-pf2n2sbgc6
- SHA256 4f17e0aa8c1abbe2ce6b1804f2a5ffeb4adf538e106144455bd9ca2e06dfaa59
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-FHK6J.tmp\is-GKR0K.tmp"C:\Users\Admin\AppData\Local\Temp\is-FHK6J.tmp\is-GKR0K.tmp" /SL4 $C01D0 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2373841 527362⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
-
C:\Program Files (x86)\flSearcher\flsearcher67.exe"C:\Program Files (x86)\flSearcher\flsearcher67.exe"3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
flsearcher67.exe
flsearcher67.exe
_iscrypt.dll
is-GKR0K.tmp
is-GKR0K.tmp
memory/384-132-0x0000000000400000-0x0000000000414000-memory.dmp
memory/384-138-0x0000000000400000-0x0000000000414000-memory.dmp
memory/384-143-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4876-142-0x0000000000400000-0x00000000015A2000-memory.dmp