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
07/09/2022, 09:49
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
11 signatures
150 seconds
General
- Target file.exe
- Size 199KB
- Sample220907-ltcejabfe5
- SHA256 6aaec12ffda00462a13eb85b47eb98e198f656c328ce260704591bebb9dd0516
- MD5 aa98463a903698380081b0b64d13fb51
- SHA1 07870a10ad998deb35dce24263019661740ef510
- SHA512 3f7f6e5d9f867357654e5fdb75b8d96f1dcc26e77589d487c50471db4fa4ab6ce764a93732310b745dee999ab6d204b4507a5b9efecc360a628a1a99b320bcd5
- SSDEEP 3072:2jChFFNC6Ndi8Gu66kTbcH7xcVP13CuRFl8O+YiV:nhM6NdJ66obc6+YF+O+Y
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/5044-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/2700-135-0x0000000002D10000-0x0000000002D19000-memory.dmp family_smokeloader behavioral2/memory/5044-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/5044-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4504-144-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4504-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 3844 cjjdbdu 4504 cjjdbdu - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2700 set thread context of 5044 2700 file.exe 83 PID 3844 set thread context of 4504 3844 cjjdbdu 93 - 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 cjjdbdu Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI cjjdbdu 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 cjjdbdu - Modifies registry class 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ Process not Found Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ Process not Found - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 5044 file.exe 5044 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 5044 file.exe 4504 cjjdbdu - Suspicious use of AdjustPrivilegeToken 18 IoCs
description pid Process Token: SeShutdownPrivilege 376 Process not Found Token: SeCreatePagefilePrivilege 376 Process not Found Token: SeShutdownPrivilege 376 Process not Found Token: SeCreatePagefilePrivilege 376 Process not Found Token: SeShutdownPrivilege 376 Process not Found Token: SeCreatePagefilePrivilege 376 Process not Found Token: SeShutdownPrivilege 376 Process not Found Token: SeCreatePagefilePrivilege 376 Process not Found Token: SeShutdownPrivilege 376 Process not Found Token: SeCreatePagefilePrivilege 376 Process not Found Token: SeShutdownPrivilege 376 Process not Found Token: SeCreatePagefilePrivilege 376 Process not Found Token: SeShutdownPrivilege 376 Process not Found Token: SeCreatePagefilePrivilege 376 Process not Found Token: SeShutdownPrivilege 376 Process not Found Token: SeCreatePagefilePrivilege 376 Process not Found Token: SeShutdownPrivilege 376 Process not Found Token: SeCreatePagefilePrivilege 376 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2700 wrote to memory of 5044 2700 file.exe 83 PID 2700 wrote to memory of 5044 2700 file.exe 83 PID 2700 wrote to memory of 5044 2700 file.exe 83 PID 2700 wrote to memory of 5044 2700 file.exe 83 PID 2700 wrote to memory of 5044 2700 file.exe 83 PID 2700 wrote to memory of 5044 2700 file.exe 83 PID 3844 wrote to memory of 4504 3844 cjjdbdu 93 PID 3844 wrote to memory of 4504 3844 cjjdbdu 93 PID 3844 wrote to memory of 4504 3844 cjjdbdu 93 PID 3844 wrote to memory of 4504 3844 cjjdbdu 93 PID 3844 wrote to memory of 4504 3844 cjjdbdu 93 PID 3844 wrote to memory of 4504 3844 cjjdbdu 93
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:2700 -
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:5044
-
-
C:\Users\Admin\AppData\Roaming\cjjdbduC:\Users\Admin\AppData\Roaming\cjjdbdu1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3844 -
C:\Users\Admin\AppData\Roaming\cjjdbduC:\Users\Admin\AppData\Roaming\cjjdbdu2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:4504
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\cjjdbdu
- Size 199KB
- SHA256 6aaec12ffda00462a13eb85b47eb98e198f656c328ce260704591bebb9dd0516
- MD5 aa98463a903698380081b0b64d13fb51
- SHA1 07870a10ad998deb35dce24263019661740ef510
- SHA512 3f7f6e5d9f867357654e5fdb75b8d96f1dcc26e77589d487c50471db4fa4ab6ce764a93732310b745dee999ab6d204b4507a5b9efecc360a628a1a99b320bcd5
- SSDEEP 3072:2jChFFNC6Ndi8Gu66kTbcH7xcVP13CuRFl8O+YiV:nhM6NdJ66obc6+YF+O+Y
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\cjjdbdu
- Size 199KB
- SHA256 6aaec12ffda00462a13eb85b47eb98e198f656c328ce260704591bebb9dd0516
- MD5 aa98463a903698380081b0b64d13fb51
- SHA1 07870a10ad998deb35dce24263019661740ef510
- SHA512 3f7f6e5d9f867357654e5fdb75b8d96f1dcc26e77589d487c50471db4fa4ab6ce764a93732310b745dee999ab6d204b4507a5b9efecc360a628a1a99b320bcd5
- SSDEEP 3072:2jChFFNC6Ndi8Gu66kTbcH7xcVP13CuRFl8O+YiV:nhM6NdJ66obc6+YF+O+Y
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\cjjdbdu
- Size 199KB
- SHA256 6aaec12ffda00462a13eb85b47eb98e198f656c328ce260704591bebb9dd0516
- MD5 aa98463a903698380081b0b64d13fb51
- SHA1 07870a10ad998deb35dce24263019661740ef510
- SHA512 3f7f6e5d9f867357654e5fdb75b8d96f1dcc26e77589d487c50471db4fa4ab6ce764a93732310b745dee999ab6d204b4507a5b9efecc360a628a1a99b320bcd5
- SSDEEP 3072:2jChFFNC6Ndi8Gu66kTbcH7xcVP13CuRFl8O+YiV:nhM6NdJ66obc6+YF+O+Y
- MD5 SHA1 SHA512 SSDEEP