Analysis
- max time kernel
150s - max time network
145s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
- submitted
01/02/2023, 08:13
General
- Target file.exe
- Size 226KB
- Sample230201-j4earsec9v
- SHA256 70cc532f97f64fdb443d7e5f4b100918ef4701263f35be62d30b7c1fd70ea470
Score
10/10
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\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\F1F6.exeC:\Users\Admin\AppData\Local\Temp\F1F6.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\Rqdarrhtrsoihy.dll,start2⤵
- Loads dropped DLL
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 448 -s 4002⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 448 -ip 4481⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
F1F6.exe
F1F6.exe
Rqdarrhtrsoihy.dll
Rqdarrhtrsoihy.dll
memory/448-141-0x0000000000400000-0x0000000002E92000-memory.dmp
memory/448-139-0x0000000004D03000-0x0000000005006000-memory.dmp
memory/448-140-0x0000000005010000-0x00000000053C7000-memory.dmp
memory/448-145-0x0000000000400000-0x0000000002E92000-memory.dmp
memory/448-146-0x0000000005010000-0x00000000053C7000-memory.dmp
memory/2632-135-0x0000000000400000-0x0000000002BA2000-memory.dmp
memory/2632-132-0x0000000002BF9000-0x0000000002C0C000-memory.dmp
memory/2632-134-0x0000000000400000-0x0000000002BA2000-memory.dmp
memory/2632-133-0x0000000002CE0000-0x0000000002CE9000-memory.dmp