Analysis
- max time kernel
150s - max time network
138s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
08/01/2023, 21:49
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 259KB
- Sample230108-1pbprsac8s
- SHA256 81c8f69498e345a9faddbb5a706aabea8979d0bca564b46b2ba5dcf1764b76bd
- MD5 dad57dc1641ab41a3578f1c0ec467a51
- SHA1 94ea5b02e8d25e6d6e0d86d8071a6a88f7b4242e
- SHA512 a78e26ca44ccfa0282913e0b933bf974d3792a9898fcd924f1775e5c5f900801841e4d01f20a4ef53a79d434e77398a01ee9bf29bc3b3f031f3591c0e3776fc8
- SSDEEP 3072:5WXhmB54KULXXLi9GfnCOsFSyI5mEeMCDd0asOCt/6Gd0/NYyHAWC9xQ9hZCRRzr:URLHLiYCOsFSMEeDD6zoYykocqgd3
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/5084-133-0x0000000002C20000-0x0000000002C29000-memory.dmp family_smokeloader behavioral2/memory/1412-135-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1412-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1412-138-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/3204-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/3204-146-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 4964 jdsuwsf 3204 jdsuwsf - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 5084 set thread context of 1412 5084 file.exe 80 PID 4964 set thread context of 3204 4964 jdsuwsf 90 - Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI jdsuwsf 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 jdsuwsf Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI jdsuwsf - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1412 file.exe 1412 file.exe 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found 760 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 760 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 1412 file.exe 3204 jdsuwsf - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 760 Process not Found Token: SeCreatePagefilePrivilege 760 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 5084 wrote to memory of 1412 5084 file.exe 80 PID 5084 wrote to memory of 1412 5084 file.exe 80 PID 5084 wrote to memory of 1412 5084 file.exe 80 PID 5084 wrote to memory of 1412 5084 file.exe 80 PID 5084 wrote to memory of 1412 5084 file.exe 80 PID 5084 wrote to memory of 1412 5084 file.exe 80 PID 4964 wrote to memory of 3204 4964 jdsuwsf 90 PID 4964 wrote to memory of 3204 4964 jdsuwsf 90 PID 4964 wrote to memory of 3204 4964 jdsuwsf 90 PID 4964 wrote to memory of 3204 4964 jdsuwsf 90 PID 4964 wrote to memory of 3204 4964 jdsuwsf 90 PID 4964 wrote to memory of 3204 4964 jdsuwsf 90
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:5084 -
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:1412
-
-
C:\Users\Admin\AppData\Roaming\jdsuwsfC:\Users\Admin\AppData\Roaming\jdsuwsf1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4964 -
C:\Users\Admin\AppData\Roaming\jdsuwsfC:\Users\Admin\AppData\Roaming\jdsuwsf2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:3204
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\jdsuwsf
- Size 259KB
- SHA256 81c8f69498e345a9faddbb5a706aabea8979d0bca564b46b2ba5dcf1764b76bd
- MD5 dad57dc1641ab41a3578f1c0ec467a51
- SHA1 94ea5b02e8d25e6d6e0d86d8071a6a88f7b4242e
- SHA512 a78e26ca44ccfa0282913e0b933bf974d3792a9898fcd924f1775e5c5f900801841e4d01f20a4ef53a79d434e77398a01ee9bf29bc3b3f031f3591c0e3776fc8
- SSDEEP 3072:5WXhmB54KULXXLi9GfnCOsFSyI5mEeMCDd0asOCt/6Gd0/NYyHAWC9xQ9hZCRRzr:URLHLiYCOsFSMEeDD6zoYykocqgd3
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\jdsuwsf
- Size 259KB
- SHA256 81c8f69498e345a9faddbb5a706aabea8979d0bca564b46b2ba5dcf1764b76bd
- MD5 dad57dc1641ab41a3578f1c0ec467a51
- SHA1 94ea5b02e8d25e6d6e0d86d8071a6a88f7b4242e
- SHA512 a78e26ca44ccfa0282913e0b933bf974d3792a9898fcd924f1775e5c5f900801841e4d01f20a4ef53a79d434e77398a01ee9bf29bc3b3f031f3591c0e3776fc8
- SSDEEP 3072:5WXhmB54KULXXLi9GfnCOsFSyI5mEeMCDd0asOCt/6Gd0/NYyHAWC9xQ9hZCRRzr:URLHLiYCOsFSMEeDD6zoYykocqgd3
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\jdsuwsf
- Size 259KB
- SHA256 81c8f69498e345a9faddbb5a706aabea8979d0bca564b46b2ba5dcf1764b76bd
- MD5 dad57dc1641ab41a3578f1c0ec467a51
- SHA1 94ea5b02e8d25e6d6e0d86d8071a6a88f7b4242e
- SHA512 a78e26ca44ccfa0282913e0b933bf974d3792a9898fcd924f1775e5c5f900801841e4d01f20a4ef53a79d434e77398a01ee9bf29bc3b3f031f3591c0e3776fc8
- SSDEEP 3072:5WXhmB54KULXXLi9GfnCOsFSyI5mEeMCDd0asOCt/6Gd0/NYyHAWC9xQ9hZCRRzr:URLHLiYCOsFSMEeDD6zoYykocqgd3
- MD5 SHA1 SHA512 SSDEEP