Analysis
- max time kernel
150s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
- submitted
15/11/2022, 11:11
General
- Target 8fe8b14abf87619b388310df6f969940.exe
- Size 193KB
- Sample221115-m99kmshd2v
- SHA256 485df0b605898f6bb01442ba2cd3d535d91ddbb1887bfa69ca1491015ed0205b
Malware Config
Signatures
- Detects Smokeloader packer 1 IoCs
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 1 IoCs
- Program crash 1 IoCs
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\8fe8b14abf87619b388310df6f969940.exe"C:\Users\Admin\AppData\Local\Temp\8fe8b14abf87619b388310df6f969940.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
-
C:\Users\Admin\AppData\Local\Temp\C837.exeC:\Users\Admin\AppData\Local\Temp\C837.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\Hefurhy.dll,start2⤵
- Loads dropped DLL
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4532 -s 4442⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4532 -ip 45321⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
C837.exe
C837.exe
Hefurhy.dll
Hefurhy.dll
memory/4532-139-0x0000000002582000-0x0000000002845000-memory.dmp
memory/4532-140-0x0000000002850000-0x0000000002B51000-memory.dmp
memory/4532-141-0x0000000000400000-0x0000000000849000-memory.dmp
memory/4532-145-0x0000000000400000-0x0000000000849000-memory.dmp
memory/4892-132-0x0000000000778000-0x0000000000788000-memory.dmp
memory/4892-135-0x0000000000400000-0x0000000000595000-memory.dmp
memory/4892-134-0x0000000000400000-0x0000000000595000-memory.dmp
memory/4892-133-0x0000000000740000-0x0000000000749000-memory.dmp
memory/5072-146-0x0000000000400000-0x0000000000851000-memory.dmp
memory/5072-147-0x0000000000400000-0x0000000000851000-memory.dmp