Analysis
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max time kernel
150s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20230703-en -
resource tags
arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system -
submitted
23/07/2023, 18:16
Static task
static1
Behavioral task
behavioral1
Sample
d8b2bb861557541b4848532a6a9cd005.exe
Resource
win7-20230712-en
Behavioral task
behavioral2
Sample
d8b2bb861557541b4848532a6a9cd005.exe
Resource
win10v2004-20230703-en
General
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Target
d8b2bb861557541b4848532a6a9cd005.exe
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Size
259KB
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MD5
d8b2bb861557541b4848532a6a9cd005
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SHA1
f051c0e60a501dbf71c9900844595cc343905f7b
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SHA256
ed5bb7322e02c65a989222913dcdd418509cd35578009fd5e578d1990cac527d
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SHA512
217124d3ffb0dc5f80e0a45adb649343156bc834f0ddf2078b2fcb95c341179ba48756a0962e171cc0a08be8037aa35ba120c8ba1f134271fa96993146f71019
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SSDEEP
3072:F3UUqemKFDevdHt9xuzmscua2OfuhufKzY3HuX/C5EBn:VaK6v1Lszmaa2OWUfmYXuX/C5EB
Malware Config
Extracted
smokeloader
pub1
Extracted
smokeloader
2020
http://host-file-host6.com/
http://host-host-file8.com/
Signatures
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SmokeLoader
Modular backdoor trojan in use since 2014.
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Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{42071214-C979-46CA-B2DF-D1B37DB9D3A8}.catalogItem svchost.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4768 set thread context of 4668 4768 d8b2bb861557541b4848532a6a9cd005.exe 86 -
Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI d8b2bb861557541b4848532a6a9cd005.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI d8b2bb861557541b4848532a6a9cd005.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI d8b2bb861557541b4848532a6a9cd005.exe -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString svchost.exe Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 svchost.exe -
Enumerates system info in registry 2 TTPs 2 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU svchost.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4668 d8b2bb861557541b4848532a6a9cd005.exe 4668 d8b2bb861557541b4848532a6a9cd005.exe 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3180 Process not Found -
Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 4668 d8b2bb861557541b4848532a6a9cd005.exe -
Suspicious use of AdjustPrivilegeToken 8 IoCs
description pid Process Token: SeShutdownPrivilege 3180 Process not Found Token: SeCreatePagefilePrivilege 3180 Process not Found Token: SeShutdownPrivilege 3180 Process not Found Token: SeCreatePagefilePrivilege 3180 Process not Found Token: SeShutdownPrivilege 3180 Process not Found Token: SeCreatePagefilePrivilege 3180 Process not Found Token: SeShutdownPrivilege 3180 Process not Found Token: SeCreatePagefilePrivilege 3180 Process not Found -
Suspicious use of UnmapMainImage 1 IoCs
pid Process 3180 Process not Found -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4768 wrote to memory of 4668 4768 d8b2bb861557541b4848532a6a9cd005.exe 86 PID 4768 wrote to memory of 4668 4768 d8b2bb861557541b4848532a6a9cd005.exe 86 PID 4768 wrote to memory of 4668 4768 d8b2bb861557541b4848532a6a9cd005.exe 86 PID 4768 wrote to memory of 4668 4768 d8b2bb861557541b4848532a6a9cd005.exe 86 PID 4768 wrote to memory of 4668 4768 d8b2bb861557541b4848532a6a9cd005.exe 86 PID 4768 wrote to memory of 4668 4768 d8b2bb861557541b4848532a6a9cd005.exe 86 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netsvcs -p1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:724
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C:\Users\Admin\AppData\Local\Temp\d8b2bb861557541b4848532a6a9cd005.exe"C:\Users\Admin\AppData\Local\Temp\d8b2bb861557541b4848532a6a9cd005.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4768 -
C:\Users\Admin\AppData\Local\Temp\d8b2bb861557541b4848532a6a9cd005.exe"C:\Users\Admin\AppData\Local\Temp\d8b2bb861557541b4848532a6a9cd005.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:4668
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