Analysis
- max time kernel
150s - max time network
126s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system - submitted
24/01/2023, 21:58
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target file.exe
- Size 201KB
- Sample230124-1vgg7sff2s
- SHA256 eed1f296204360f8f563e9dbceca4628aef8d7c4437c6359ac20d1bfc6fc9573
- MD5 2f0249d59626c929aa9d7392965775ba
- SHA1 26f74dee4e4dc48c194b8fbdfa576ead91c1c497
- SHA512 c2d68c1faffcbf651af1221f581cc65988ec49a132462dd301cfba4cacf819a8519edffbab934579bfa7593ec973f0a203ad9e8150df0aad570e2b6fd5c7f976
- SSDEEP 3072:TBN24FdiLvrpy05gqDESQkCiDOVRa1Z7TE6Vsji:dSLjpyKESV9D5379W
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/3448-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/3104-135-0x00000000048D0000-0x00000000048D9000-memory.dmp family_smokeloader behavioral2/memory/3448-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/3448-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/3936-144-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/3936-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 4232 fcbuuhv 3936 fcbuuhv - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3104 set thread context of 3448 3104 file.exe 79 PID 4232 set thread context of 3936 4232 fcbuuhv 88 - Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI fcbuuhv Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI fcbuuhv Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI fcbuuhv - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3448 file.exe 3448 file.exe 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2640 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 3448 file.exe 3936 fcbuuhv - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 2640 Process not Found Token: SeCreatePagefilePrivilege 2640 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3104 wrote to memory of 3448 3104 file.exe 79 PID 3104 wrote to memory of 3448 3104 file.exe 79 PID 3104 wrote to memory of 3448 3104 file.exe 79 PID 3104 wrote to memory of 3448 3104 file.exe 79 PID 3104 wrote to memory of 3448 3104 file.exe 79 PID 3104 wrote to memory of 3448 3104 file.exe 79 PID 4232 wrote to memory of 3936 4232 fcbuuhv 88 PID 4232 wrote to memory of 3936 4232 fcbuuhv 88 PID 4232 wrote to memory of 3936 4232 fcbuuhv 88 PID 4232 wrote to memory of 3936 4232 fcbuuhv 88 PID 4232 wrote to memory of 3936 4232 fcbuuhv 88 PID 4232 wrote to memory of 3936 4232 fcbuuhv 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3104 -
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:3448
-
-
C:\Users\Admin\AppData\Roaming\fcbuuhvC:\Users\Admin\AppData\Roaming\fcbuuhv1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4232 -
C:\Users\Admin\AppData\Roaming\fcbuuhvC:\Users\Admin\AppData\Roaming\fcbuuhv2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:3936
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\fcbuuhv
- Size 201KB
- SHA256 eed1f296204360f8f563e9dbceca4628aef8d7c4437c6359ac20d1bfc6fc9573
- MD5 2f0249d59626c929aa9d7392965775ba
- SHA1 26f74dee4e4dc48c194b8fbdfa576ead91c1c497
- SHA512 c2d68c1faffcbf651af1221f581cc65988ec49a132462dd301cfba4cacf819a8519edffbab934579bfa7593ec973f0a203ad9e8150df0aad570e2b6fd5c7f976
- SSDEEP 3072:TBN24FdiLvrpy05gqDESQkCiDOVRa1Z7TE6Vsji:dSLjpyKESV9D5379W
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\fcbuuhv
- Size 201KB
- SHA256 eed1f296204360f8f563e9dbceca4628aef8d7c4437c6359ac20d1bfc6fc9573
- MD5 2f0249d59626c929aa9d7392965775ba
- SHA1 26f74dee4e4dc48c194b8fbdfa576ead91c1c497
- SHA512 c2d68c1faffcbf651af1221f581cc65988ec49a132462dd301cfba4cacf819a8519edffbab934579bfa7593ec973f0a203ad9e8150df0aad570e2b6fd5c7f976
- SSDEEP 3072:TBN24FdiLvrpy05gqDESQkCiDOVRa1Z7TE6Vsji:dSLjpyKESV9D5379W
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\fcbuuhv
- Size 201KB
- SHA256 eed1f296204360f8f563e9dbceca4628aef8d7c4437c6359ac20d1bfc6fc9573
- MD5 2f0249d59626c929aa9d7392965775ba
- SHA1 26f74dee4e4dc48c194b8fbdfa576ead91c1c497
- SHA512 c2d68c1faffcbf651af1221f581cc65988ec49a132462dd301cfba4cacf819a8519edffbab934579bfa7593ec973f0a203ad9e8150df0aad570e2b6fd5c7f976
- SSDEEP 3072:TBN24FdiLvrpy05gqDESQkCiDOVRa1Z7TE6Vsji:dSLjpyKESV9D5379W
- MD5 SHA1 SHA512 SSDEEP