Analysis
- max time kernel
150s - max time network
145s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system - submitted
05/12/2022, 10:38
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
windows7-x64
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target file.exe
- Size 200KB
- Sample221205-mpd81abd92
- SHA256 0eb2a571c5059cbfba0d7fbd6f04d4f5c24513a9be4253239f656ec3c60a31ec
- MD5 fb6cb22871e0de9614228806294cc188
- SHA1 9f5fe9c923c5bda320f249e183811afd83f01f55
- SHA512 09b276eb62d9066c8c0ee6b92b2452f9b07e757221b5d054aa9a86cb2ff56456358ac70f8aad7a7d542309cf66fba0adae43fd417059b661f459eff3cb6f3289
- SSDEEP 3072:OdNWmNjEOiei5AMXGaqX3wMX8CGSDFhTDw02rwEINA+z:AiiMXAZvc02sEINA+
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/3720-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4864-135-0x00000000005C0000-0x00000000005C9000-memory.dmp family_smokeloader behavioral2/memory/3720-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/3720-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/3036-144-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/3036-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 4588 wsswtww 3036 wsswtww - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4864 set thread context of 3720 4864 file.exe 82 PID 4588 set thread context of 3036 4588 wsswtww 92 - 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 file.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI wsswtww Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI wsswtww Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI wsswtww Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3720 file.exe 3720 file.exe 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2248 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 3720 file.exe 3036 wsswtww - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 2248 Process not Found Token: SeCreatePagefilePrivilege 2248 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4864 wrote to memory of 3720 4864 file.exe 82 PID 4864 wrote to memory of 3720 4864 file.exe 82 PID 4864 wrote to memory of 3720 4864 file.exe 82 PID 4864 wrote to memory of 3720 4864 file.exe 82 PID 4864 wrote to memory of 3720 4864 file.exe 82 PID 4864 wrote to memory of 3720 4864 file.exe 82 PID 4588 wrote to memory of 3036 4588 wsswtww 92 PID 4588 wrote to memory of 3036 4588 wsswtww 92 PID 4588 wrote to memory of 3036 4588 wsswtww 92 PID 4588 wrote to memory of 3036 4588 wsswtww 92 PID 4588 wrote to memory of 3036 4588 wsswtww 92 PID 4588 wrote to memory of 3036 4588 wsswtww 92
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:4864 -
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:3720
-
-
C:\Users\Admin\AppData\Roaming\wsswtwwC:\Users\Admin\AppData\Roaming\wsswtww1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4588 -
C:\Users\Admin\AppData\Roaming\wsswtwwC:\Users\Admin\AppData\Roaming\wsswtww2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:3036
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\wsswtww
- Size 200KB
- SHA256 0eb2a571c5059cbfba0d7fbd6f04d4f5c24513a9be4253239f656ec3c60a31ec
- MD5 fb6cb22871e0de9614228806294cc188
- SHA1 9f5fe9c923c5bda320f249e183811afd83f01f55
- SHA512 09b276eb62d9066c8c0ee6b92b2452f9b07e757221b5d054aa9a86cb2ff56456358ac70f8aad7a7d542309cf66fba0adae43fd417059b661f459eff3cb6f3289
- SSDEEP 3072:OdNWmNjEOiei5AMXGaqX3wMX8CGSDFhTDw02rwEINA+z:AiiMXAZvc02sEINA+
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\wsswtww
- Size 200KB
- SHA256 0eb2a571c5059cbfba0d7fbd6f04d4f5c24513a9be4253239f656ec3c60a31ec
- MD5 fb6cb22871e0de9614228806294cc188
- SHA1 9f5fe9c923c5bda320f249e183811afd83f01f55
- SHA512 09b276eb62d9066c8c0ee6b92b2452f9b07e757221b5d054aa9a86cb2ff56456358ac70f8aad7a7d542309cf66fba0adae43fd417059b661f459eff3cb6f3289
- SSDEEP 3072:OdNWmNjEOiei5AMXGaqX3wMX8CGSDFhTDw02rwEINA+z:AiiMXAZvc02sEINA+
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\wsswtww
- Size 200KB
- SHA256 0eb2a571c5059cbfba0d7fbd6f04d4f5c24513a9be4253239f656ec3c60a31ec
- MD5 fb6cb22871e0de9614228806294cc188
- SHA1 9f5fe9c923c5bda320f249e183811afd83f01f55
- SHA512 09b276eb62d9066c8c0ee6b92b2452f9b07e757221b5d054aa9a86cb2ff56456358ac70f8aad7a7d542309cf66fba0adae43fd417059b661f459eff3cb6f3289
- SSDEEP 3072:OdNWmNjEOiei5AMXGaqX3wMX8CGSDFhTDw02rwEINA+z:AiiMXAZvc02sEINA+
- MD5 SHA1 SHA512 SSDEEP