Analysis
- max time kernel
150s - max time network
139s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
31/01/2023, 19:48
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
windows7-x64
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target file.exe
- Size 296KB
- Sample230131-yh4e4abh41
- SHA256 9e7f9353ce20ec8542a401c7e87b3da83eec6c2c7de2bddf06125b2d7755ac22
- MD5 959f089583804485ac51c620ab73ede7
- SHA1 5589b592d85a6f67bdcd0ff7c9fb34d8963e0f51
- SHA512 fb60b52f7f317535aebf2f6e79e730dc20c634c7f9d688c67e160c1e4a912cf196bf7875e5fe76b836836d2d84741a0bdf08ac2230e3f98d663b88bcf44a3119
- SSDEEP 6144:hZNqrLebzcNPhcSQOvL0/HTiLH2mqMoIEL8M:jNyyPcNJZ9geD5qMeL
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/800-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/2636-135-0x0000000000700000-0x0000000000709000-memory.dmp family_smokeloader behavioral2/memory/800-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/800-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/2776-144-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/2776-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 4872 wccbscr 2776 wccbscr - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2636 set thread context of 800 2636 file.exe 79 PID 4872 set thread context of 2776 4872 wccbscr 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 wccbscr Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI wccbscr Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI wccbscr 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 - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 800 file.exe 800 file.exe 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found 376 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 376 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 800 file.exe 2776 wccbscr - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 376 Process not Found Token: SeCreatePagefilePrivilege 376 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2636 wrote to memory of 800 2636 file.exe 79 PID 2636 wrote to memory of 800 2636 file.exe 79 PID 2636 wrote to memory of 800 2636 file.exe 79 PID 2636 wrote to memory of 800 2636 file.exe 79 PID 2636 wrote to memory of 800 2636 file.exe 79 PID 2636 wrote to memory of 800 2636 file.exe 79 PID 4872 wrote to memory of 2776 4872 wccbscr 88 PID 4872 wrote to memory of 2776 4872 wccbscr 88 PID 4872 wrote to memory of 2776 4872 wccbscr 88 PID 4872 wrote to memory of 2776 4872 wccbscr 88 PID 4872 wrote to memory of 2776 4872 wccbscr 88 PID 4872 wrote to memory of 2776 4872 wccbscr 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:2636 -
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:800
-
-
C:\Users\Admin\AppData\Roaming\wccbscrC:\Users\Admin\AppData\Roaming\wccbscr1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4872 -
C:\Users\Admin\AppData\Roaming\wccbscrC:\Users\Admin\AppData\Roaming\wccbscr2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:2776
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\wccbscr
- Size 296KB
- SHA256 9e7f9353ce20ec8542a401c7e87b3da83eec6c2c7de2bddf06125b2d7755ac22
- MD5 959f089583804485ac51c620ab73ede7
- SHA1 5589b592d85a6f67bdcd0ff7c9fb34d8963e0f51
- SHA512 fb60b52f7f317535aebf2f6e79e730dc20c634c7f9d688c67e160c1e4a912cf196bf7875e5fe76b836836d2d84741a0bdf08ac2230e3f98d663b88bcf44a3119
- SSDEEP 6144:hZNqrLebzcNPhcSQOvL0/HTiLH2mqMoIEL8M:jNyyPcNJZ9geD5qMeL
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\wccbscr
- Size 296KB
- SHA256 9e7f9353ce20ec8542a401c7e87b3da83eec6c2c7de2bddf06125b2d7755ac22
- MD5 959f089583804485ac51c620ab73ede7
- SHA1 5589b592d85a6f67bdcd0ff7c9fb34d8963e0f51
- SHA512 fb60b52f7f317535aebf2f6e79e730dc20c634c7f9d688c67e160c1e4a912cf196bf7875e5fe76b836836d2d84741a0bdf08ac2230e3f98d663b88bcf44a3119
- SSDEEP 6144:hZNqrLebzcNPhcSQOvL0/HTiLH2mqMoIEL8M:jNyyPcNJZ9geD5qMeL
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\wccbscr
- Size 296KB
- SHA256 9e7f9353ce20ec8542a401c7e87b3da83eec6c2c7de2bddf06125b2d7755ac22
- MD5 959f089583804485ac51c620ab73ede7
- SHA1 5589b592d85a6f67bdcd0ff7c9fb34d8963e0f51
- SHA512 fb60b52f7f317535aebf2f6e79e730dc20c634c7f9d688c67e160c1e4a912cf196bf7875e5fe76b836836d2d84741a0bdf08ac2230e3f98d663b88bcf44a3119
- SSDEEP 6144:hZNqrLebzcNPhcSQOvL0/HTiLH2mqMoIEL8M:jNyyPcNJZ9geD5qMeL
- MD5 SHA1 SHA512 SSDEEP