Analysis
- max time kernel
151s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
- submitted
28/09/2022, 02:40
General
- Target file.exe
- Size 327KB
- Sample220928-c5v7caehf4
- SHA256 f2fe69e80d500d993b1984314dcfa5a1e102b1714130da9d56525e8df5ef190b
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
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- 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 5 IoCs
- Suspicious use of WriteProcessMemory 3 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\D11B.exeC:\Users\Admin\AppData\Local\Temp\D11B.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3756 -s 13322⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3756 -ip 37561⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
D11B.exe
D11B.exe
memory/640-133-0x00000000007F0000-0x00000000007F9000-memory.dmp
memory/640-134-0x0000000000400000-0x0000000000492000-memory.dmp
memory/640-135-0x0000000000400000-0x0000000000492000-memory.dmp
memory/640-132-0x000000000084E000-0x000000000085E000-memory.dmp
memory/3756-144-0x0000000005940000-0x0000000005952000-memory.dmp
memory/3756-147-0x0000000005DA0000-0x0000000005E32000-memory.dmp
memory/3756-140-0x0000000000800000-0x0000000000837000-memory.dmp
memory/3756-141-0x0000000000400000-0x00000000005A5000-memory.dmp
memory/3756-142-0x0000000004D00000-0x00000000052A4000-memory.dmp
memory/3756-143-0x00000000052B0000-0x00000000058C8000-memory.dmp
memory/3756-145-0x0000000005960000-0x0000000005A6A000-memory.dmp
memory/3756-146-0x0000000005A90000-0x0000000005ACC000-memory.dmp
memory/3756-139-0x00000000008C8000-0x00000000008F2000-memory.dmp
memory/3756-148-0x0000000005E40000-0x0000000005EA6000-memory.dmp
memory/3756-149-0x0000000006630000-0x0000000006680000-memory.dmp
memory/3756-150-0x0000000006680000-0x00000000066F6000-memory.dmp
memory/3756-151-0x0000000006720000-0x000000000673E000-memory.dmp
memory/3756-152-0x0000000006B40000-0x0000000006D02000-memory.dmp
memory/3756-153-0x0000000006D10000-0x000000000723C000-memory.dmp
memory/3756-154-0x00000000008C8000-0x00000000008F2000-memory.dmp
memory/3756-155-0x00000000008C8000-0x00000000008F2000-memory.dmp
memory/3756-156-0x0000000000400000-0x00000000005A5000-memory.dmp