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Analysis
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max time kernel
156s -
max time network
166s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
12/10/2023, 01:23
Static task
static1
Behavioral task
behavioral1
Sample
f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe
Resource
win10v2004-20230915-en
General
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Target
f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe
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Size
321KB
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MD5
5cff40f577549d49fa9c2e2bbdedeecd
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SHA1
836c2f689fde566efd6994a48aff4259e6f6a7eb
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SHA256
f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52
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SHA512
90afff56069cf39b44d6a6ad7bc92d317716a7e620075762f20915bc74085bf2a3d1be73d98e22df9ccf7400b6418e30b9bd7590d3fa1631fdb8e3932fe1c08d
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SSDEEP
6144:vV7th/mkLUNBOjxpYQLfbyuKUG6dda4N4:vpj+kLUnOjxpXLfbgGvP
Malware Config
Extracted
smokeloader
up4
Extracted
smokeloader
2020
http://host-file-file0.com/
http://file-file-file1.com/
Signatures
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SmokeLoader
Modular backdoor trojan in use since 2014.
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Modifies Installed Components in the registry 2 TTPs 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Active Setup\Installed Components explorer.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2912 set thread context of 4672 2912 f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe 87 -
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 f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe -
Modifies registry class 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-1574508946-349927670-1185736483-1000\{67A6F7BD-9C30-40F3-B179-F0234F7EBF35} explorer.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ explorer.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4672 f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe 4672 f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found 536 Process not Found -
Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 4672 f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
description pid Process Token: SeShutdownPrivilege 536 Process not Found Token: SeCreatePagefilePrivilege 536 Process not Found Token: SeShutdownPrivilege 536 Process not Found Token: SeCreatePagefilePrivilege 536 Process not Found Token: SeShutdownPrivilege 536 Process not Found Token: SeCreatePagefilePrivilege 536 Process not Found Token: SeShutdownPrivilege 536 Process not Found Token: SeCreatePagefilePrivilege 536 Process not Found Token: SeShutdownPrivilege 900 explorer.exe Token: SeCreatePagefilePrivilege 900 explorer.exe Token: SeShutdownPrivilege 900 explorer.exe Token: SeCreatePagefilePrivilege 900 explorer.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 900 explorer.exe 900 explorer.exe -
Suspicious use of SendNotifyMessage 2 IoCs
pid Process 900 explorer.exe 900 explorer.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2912 wrote to memory of 4672 2912 f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe 87 PID 2912 wrote to memory of 4672 2912 f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe 87 PID 2912 wrote to memory of 4672 2912 f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe 87 PID 2912 wrote to memory of 4672 2912 f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe 87 PID 2912 wrote to memory of 4672 2912 f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe 87 PID 2912 wrote to memory of 4672 2912 f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe 87 -
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:\Users\Admin\AppData\Local\Temp\f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe"C:\Users\Admin\AppData\Local\Temp\f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2912 -
C:\Users\Admin\AppData\Local\Temp\f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe"C:\Users\Admin\AppData\Local\Temp\f22c85988b5f9c2c58d4f0cdd3c5c5d4aa807d196a9e712b8880e46d9586fb52.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:4672
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C:\Windows\explorer.exeexplorer.exe1⤵
- Modifies Installed Components in the registry
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:900