Analysis
- max time kernel
113s - max time network
141s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
29/01/2023, 08:31
General
- Target file.exe
- Size 2.2MB
- Sample230129-kepkwaff72
- SHA256 1e4f9fd14bda29b718d0ef202a2ee1d5afa391a588f3d89441b47f216cc79939
Malware Config
Extracted
-
gcleaner
-
45.12.253.56
-
45.12.253.72
-
45.12.253.98
-
45.12.253.75
Signatures
- GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
- Executes dropped EXE 3 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL 3 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.
- Kills process with taskkill 1 IoCs
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 15 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-0AF95.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-0AF95.tmp\file.tmp" /SL5="$B01EE,2006867,135168,C:\Users\Admin\AppData\Local\Temp\file.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
-
C:\Program Files (x86)\FgesoftFR\FinalRecovery\finalrecovery.exe"C:\Program Files (x86)\FgesoftFR\FinalRecovery\finalrecovery.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\WM7w8JvrzdLQo.exe4⤵
- Executes dropped EXE
-
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FgesoftFR\FinalRecovery\finalrecovery.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\taskkill.exetaskkill /im "finalrecovery.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
-
-
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
finalrecovery.exe
finalrecovery.exe
file.tmp
file.tmp
_iscrypt.dll
_isdecmp.dll
_isdecmp.dll
WM7w8JvrzdLQo.exe
WM7w8JvrzdLQo.exe
memory/380-146-0x0000000000400000-0x0000000001389000-memory.dmp
memory/380-152-0x0000000000400000-0x0000000001389000-memory.dmp
memory/380-158-0x0000000000400000-0x0000000001389000-memory.dmp
memory/380-153-0x0000000010000000-0x000000001001B000-memory.dmp
memory/380-145-0x0000000000400000-0x0000000001389000-memory.dmp
memory/380-147-0x0000000000400000-0x0000000001389000-memory.dmp
memory/5056-135-0x0000000000400000-0x0000000000428000-memory.dmp
memory/5056-151-0x0000000000400000-0x0000000000428000-memory.dmp
memory/5056-132-0x0000000000400000-0x0000000000428000-memory.dmp
memory/5056-159-0x0000000000400000-0x0000000000428000-memory.dmp
memory/5064-140-0x0000000003201000-0x0000000003203000-memory.dmp