Analysis
- max time kernel
150s - max time network
125s - platform
windows10-2004_x64 - resource
win10v2004-20230221-en - resource tags
arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system - submitted
20/03/2023, 11:34
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
win10v2004-20230221-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target setup.exe
- Size 249KB
- Sample230320-npf82adc57
- SHA256 e7a74e351e3011aab2b81ea087afc0beaae8bf3be30596b6a0a157ac0e078288
- MD5 0f3b96ab01bae6211eb51eee7ee58725
- SHA1 8b474867d88f36557da76d907f59208466a03287
- SHA512 73f648c132a0ad8c7def05aad4f8414657e063d8771bc683b21017403459eb5b594624881ab60670d2f5168af563ea7b8a5494ef8a31e94f353cf11d4345fbd7
- SSDEEP 3072:nDSCDXwLvmuwphfb7fR/3W2WmnHsH/WqR+XYRG53bryINe:DDXwLv+RPpmOqRIlvyINe
- 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.
- Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3980 set thread context of 4764 3980 setup.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 setup.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI setup.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI setup.exe - 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-1-5-21-2805025096-2326403612-4231045514-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ Process not Found - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4764 setup.exe 4764 setup.exe 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found 3156 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3156 Process not Found - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 4764 setup.exe - Suspicious use of AdjustPrivilegeToken 8 IoCs
description pid Process Token: SeShutdownPrivilege 3156 Process not Found Token: SeCreatePagefilePrivilege 3156 Process not Found Token: SeShutdownPrivilege 3156 Process not Found Token: SeCreatePagefilePrivilege 3156 Process not Found Token: SeShutdownPrivilege 3156 Process not Found Token: SeCreatePagefilePrivilege 3156 Process not Found Token: SeShutdownPrivilege 3156 Process not Found Token: SeCreatePagefilePrivilege 3156 Process not Found - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3980 wrote to memory of 4764 3980 setup.exe 86 PID 3980 wrote to memory of 4764 3980 setup.exe 86 PID 3980 wrote to memory of 4764 3980 setup.exe 86 PID 3980 wrote to memory of 4764 3980 setup.exe 86 PID 3980 wrote to memory of 4764 3980 setup.exe 86 PID 3980 wrote to memory of 4764 3980 setup.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
-
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:3980 -
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:4764
-