Analysis
- max time kernel
150s - max time network
127s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
20/01/2023, 23:48
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220901-en
windows7-x64
8 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 328KB
- Sample230120-3tenbsab49
- SHA256 82985ea72b32a94d2b854237a12eda5cc44fbfcd0c61bd651a4d7fe7917ba49a
- MD5 1ea135a7cfce2b5cbf40322f31ab2576
- SHA1 408bad4bf263581ea9859dc34c6daf4573106062
- SHA512 fc47323239c305cffaee786610eec037a9786d04b569dd4f674c6d7759f26e74904aa4d341f8cf56862c41287ba8e653ffc69c98ce00214a957f6ed907d82c63
- SSDEEP 6144:HsLXis2CuolmCLzBw2RacgCoZsBPH4OxT:MbisPNZRvg6/7
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/4640-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4656-135-0x0000000002190000-0x0000000002199000-memory.dmp family_smokeloader behavioral2/memory/4640-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4640-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/2472-144-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/2472-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 4076 idbwfsj 2472 idbwfsj - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4656 set thread context of 4640 4656 file.exe 80 PID 4076 set thread context of 2472 4076 idbwfsj 89 - Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI idbwfsj Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI idbwfsj 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 idbwfsj - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4640 file.exe 4640 file.exe 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found 2204 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2204 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 4640 file.exe 2472 idbwfsj - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 2204 Process not Found Token: SeCreatePagefilePrivilege 2204 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4656 wrote to memory of 4640 4656 file.exe 80 PID 4656 wrote to memory of 4640 4656 file.exe 80 PID 4656 wrote to memory of 4640 4656 file.exe 80 PID 4656 wrote to memory of 4640 4656 file.exe 80 PID 4656 wrote to memory of 4640 4656 file.exe 80 PID 4656 wrote to memory of 4640 4656 file.exe 80 PID 4076 wrote to memory of 2472 4076 idbwfsj 89 PID 4076 wrote to memory of 2472 4076 idbwfsj 89 PID 4076 wrote to memory of 2472 4076 idbwfsj 89 PID 4076 wrote to memory of 2472 4076 idbwfsj 89 PID 4076 wrote to memory of 2472 4076 idbwfsj 89 PID 4076 wrote to memory of 2472 4076 idbwfsj 89
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:4656 -
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:4640
-
-
C:\Users\Admin\AppData\Roaming\idbwfsjC:\Users\Admin\AppData\Roaming\idbwfsj1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4076 -
C:\Users\Admin\AppData\Roaming\idbwfsjC:\Users\Admin\AppData\Roaming\idbwfsj2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:2472
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\idbwfsj
- Size 328KB
- SHA256 82985ea72b32a94d2b854237a12eda5cc44fbfcd0c61bd651a4d7fe7917ba49a
- MD5 1ea135a7cfce2b5cbf40322f31ab2576
- SHA1 408bad4bf263581ea9859dc34c6daf4573106062
- SHA512 fc47323239c305cffaee786610eec037a9786d04b569dd4f674c6d7759f26e74904aa4d341f8cf56862c41287ba8e653ffc69c98ce00214a957f6ed907d82c63
- SSDEEP 6144:HsLXis2CuolmCLzBw2RacgCoZsBPH4OxT:MbisPNZRvg6/7
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\idbwfsj
- Size 328KB
- SHA256 82985ea72b32a94d2b854237a12eda5cc44fbfcd0c61bd651a4d7fe7917ba49a
- MD5 1ea135a7cfce2b5cbf40322f31ab2576
- SHA1 408bad4bf263581ea9859dc34c6daf4573106062
- SHA512 fc47323239c305cffaee786610eec037a9786d04b569dd4f674c6d7759f26e74904aa4d341f8cf56862c41287ba8e653ffc69c98ce00214a957f6ed907d82c63
- SSDEEP 6144:HsLXis2CuolmCLzBw2RacgCoZsBPH4OxT:MbisPNZRvg6/7
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\idbwfsj
- Size 328KB
- SHA256 82985ea72b32a94d2b854237a12eda5cc44fbfcd0c61bd651a4d7fe7917ba49a
- MD5 1ea135a7cfce2b5cbf40322f31ab2576
- SHA1 408bad4bf263581ea9859dc34c6daf4573106062
- SHA512 fc47323239c305cffaee786610eec037a9786d04b569dd4f674c6d7759f26e74904aa4d341f8cf56862c41287ba8e653ffc69c98ce00214a957f6ed907d82c63
- SSDEEP 6144:HsLXis2CuolmCLzBw2RacgCoZsBPH4OxT:MbisPNZRvg6/7
- MD5 SHA1 SHA512 SSDEEP