Analysis
- max time kernel
151s - max time network
125s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system - submitted
15/03/2023, 03:39
Static task
static1
Behavioral task
behavioral1
Sample
setup.exe
Resource
win7-20230220-en
windows7-x64
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
setup.exe
Resource
win10v2004-20230220-en
windows10-2004-x64
11 signatures
150 seconds
General
- Target setup.exe
- Size 187KB
- Sample230315-d7l7wsdc2t
- SHA256 1fbfb3292abf8b73b26c30b6bb2d629e58a82da751c701acb4fee78d47675d06
- MD5 39da06c38fe534616633d6c6d95102fe
- SHA1 6191dae1071ad99bc85fead5e4255aa97d437f5f
- SHA512 db6d9be8eeaf778e07c040da25498636c584222393d246dcaf6847bd3beabcacf5ba1a926cc0938b204a4bc51a5a23e1e2bb809c94663c9f06f11c1896fe6edf
- SSDEEP 3072:a8guTa8g5M+3pUu5FIrvy7ydzvqDazZni8:guTadRUuTAvR1qD6
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Extracted
Family
-
smokeloader
Botnet
-
lab
Extracted
Family
-
smokeloader
Version
-
2020
C2
-
http://host-file-host6.com/
-
http://host-host-file8.com/
rc4.i32
rc4.i32
Signatures
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 2520 trbcvbe 3116 trbcvbe - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4956 set thread context of 4084 4956 setup.exe 86 PID 2520 set thread context of 3116 2520 trbcvbe 98 - Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI trbcvbe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI setup.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI setup.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI setup.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI trbcvbe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI trbcvbe - 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-1-5-21-1675742406-747946869-1029867430-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ Process not Found - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4084 setup.exe 4084 setup.exe 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found 3172 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3172 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 4084 setup.exe 3116 trbcvbe - Suspicious use of AdjustPrivilegeToken 6 IoCs
description pid Process Token: SeShutdownPrivilege 3172 Process not Found Token: SeCreatePagefilePrivilege 3172 Process not Found Token: SeShutdownPrivilege 3172 Process not Found Token: SeCreatePagefilePrivilege 3172 Process not Found Token: SeShutdownPrivilege 3172 Process not Found Token: SeCreatePagefilePrivilege 3172 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4956 wrote to memory of 4084 4956 setup.exe 86 PID 4956 wrote to memory of 4084 4956 setup.exe 86 PID 4956 wrote to memory of 4084 4956 setup.exe 86 PID 4956 wrote to memory of 4084 4956 setup.exe 86 PID 4956 wrote to memory of 4084 4956 setup.exe 86 PID 4956 wrote to memory of 4084 4956 setup.exe 86 PID 2520 wrote to memory of 3116 2520 trbcvbe 98 PID 2520 wrote to memory of 3116 2520 trbcvbe 98 PID 2520 wrote to memory of 3116 2520 trbcvbe 98 PID 2520 wrote to memory of 3116 2520 trbcvbe 98 PID 2520 wrote to memory of 3116 2520 trbcvbe 98 PID 2520 wrote to memory of 3116 2520 trbcvbe 98 - 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
-
C:\Users\Admin\AppData\Local\Temp\setup.exe"C:\Users\Admin\AppData\Local\Temp\setup.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4956 -
C:\Users\Admin\AppData\Local\Temp\setup.exe"C:\Users\Admin\AppData\Local\Temp\setup.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:4084
-
-
C:\Users\Admin\AppData\Roaming\trbcvbeC:\Users\Admin\AppData\Roaming\trbcvbe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2520 -
C:\Users\Admin\AppData\Roaming\trbcvbeC:\Users\Admin\AppData\Roaming\trbcvbe2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:3116
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\trbcvbe
- Size 187KB
- SHA256 1fbfb3292abf8b73b26c30b6bb2d629e58a82da751c701acb4fee78d47675d06
- MD5 39da06c38fe534616633d6c6d95102fe
- SHA1 6191dae1071ad99bc85fead5e4255aa97d437f5f
- SHA512 db6d9be8eeaf778e07c040da25498636c584222393d246dcaf6847bd3beabcacf5ba1a926cc0938b204a4bc51a5a23e1e2bb809c94663c9f06f11c1896fe6edf
- SSDEEP 3072:a8guTa8g5M+3pUu5FIrvy7ydzvqDazZni8:guTadRUuTAvR1qD6
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\trbcvbe
- Size 187KB
- SHA256 1fbfb3292abf8b73b26c30b6bb2d629e58a82da751c701acb4fee78d47675d06
- MD5 39da06c38fe534616633d6c6d95102fe
- SHA1 6191dae1071ad99bc85fead5e4255aa97d437f5f
- SHA512 db6d9be8eeaf778e07c040da25498636c584222393d246dcaf6847bd3beabcacf5ba1a926cc0938b204a4bc51a5a23e1e2bb809c94663c9f06f11c1896fe6edf
- SSDEEP 3072:a8guTa8g5M+3pUu5FIrvy7ydzvqDazZni8:guTadRUuTAvR1qD6
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\trbcvbe
- Size 187KB
- SHA256 1fbfb3292abf8b73b26c30b6bb2d629e58a82da751c701acb4fee78d47675d06
- MD5 39da06c38fe534616633d6c6d95102fe
- SHA1 6191dae1071ad99bc85fead5e4255aa97d437f5f
- SHA512 db6d9be8eeaf778e07c040da25498636c584222393d246dcaf6847bd3beabcacf5ba1a926cc0938b204a4bc51a5a23e1e2bb809c94663c9f06f11c1896fe6edf
- SSDEEP 3072:a8guTa8g5M+3pUu5FIrvy7ydzvqDazZni8:guTadRUuTAvR1qD6
- MD5 SHA1 SHA512 SSDEEP