Analysis
- max time kernel
139s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
- submitted
09/02/2023, 08:32
General
- Target file.exe
- Size 196KB
- Sample230209-kfa4waca7s
- SHA256 aded428c9966adbadae848af5e22dd2b89246d9ce8676dd48d5e46d564dbb360
Malware Config
Signatures
- Detects Smokeloader packer 1 IoCs
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
-
C:\Users\Admin\AppData\Local\Temp\7D6D.exeC:\Users\Admin\AppData\Local\Temp\7D6D.exe1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /tn "svcupdater" /tr "C:\Users\Admin\AppData\Roaming\Win32Sync\svcupdater.exe" /st 00:00 /du 9999:59 /sc once /ri 1 /f2⤵
- Creates scheduled task(s)
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 868 -ip 8681⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
7D6D.exe
7D6D.exe
memory/868-140-0x0000000000569000-0x0000000000593000-memory.dmp
memory/868-142-0x0000000000400000-0x000000000047A000-memory.dmp
memory/868-141-0x0000000002110000-0x0000000002157000-memory.dmp
memory/4672-132-0x000000000069D000-0x00000000006B0000-memory.dmp
memory/4672-133-0x0000000000630000-0x0000000000639000-memory.dmp
memory/4672-134-0x0000000000400000-0x0000000000562000-memory.dmp
memory/4672-135-0x0000000000400000-0x0000000000562000-memory.dmp
memory/4672-136-0x000000000069D000-0x00000000006B0000-memory.dmp