Analysis
- max time kernel
150s - max time network
148s - platform
windows7_x64 - resource
win7-en-20211014 - submitted
07/12/2021, 01:57
General
- Target 3436a603bfcd7ff36a8935a2d6ffcc42.exe
- Size 234KB
- Sample211207-cc9t2affej
- SHA256 17ca1538d136f4fce9b5719d233e94eca28dac49990e83fd90fc51a2abae9443
Malware Config
Extracted
-
smokeloader
-
2020
-
http://rcacademy.at/upload/
-
http://e-lanpengeonline.com/upload/
-
http://vjcmvz.cn/upload/
-
http://galala.ru/upload/
-
http://witra.ru/upload/
Signatures
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Downloads MZ/PE file
- Executes dropped EXE 2 IoCs
- Deletes itself 1 IoCs
- Drops startup file 1 IoCs
- Loads dropped DLL 3 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.
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of SendNotifyMessage 4 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\3436a603bfcd7ff36a8935a2d6ffcc42.exe"C:\Users\Admin\AppData\Local\Temp\3436a603bfcd7ff36a8935a2d6ffcc42.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
-
C:\Users\Admin\AppData\Local\Temp\DFC4.exeC:\Users\Admin\AppData\Local\Temp\DFC4.exe1⤵
- Executes dropped EXE
- Drops startup file
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe"C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: AddClipboardFormatListener
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/824-62-0x00000000009C8000-0x0000000000A48000-memory.dmp
memory/824-65-0x0000000000290000-0x0000000000321000-memory.dmp
memory/824-66-0x0000000000400000-0x0000000000541000-memory.dmp
memory/956-55-0x00000000005EB000-0x00000000005F4000-memory.dmp
memory/956-58-0x0000000000400000-0x0000000000440000-memory.dmp
memory/956-57-0x0000000000220000-0x0000000000229000-memory.dmp
memory/956-56-0x00000000768A1000-0x00000000768A3000-memory.dmp
memory/1260-59-0x0000000002A20000-0x0000000002A36000-memory.dmp
memory/1356-73-0x00000000005D8000-0x0000000000658000-memory.dmp
memory/1356-75-0x0000000000400000-0x0000000000541000-memory.dmp