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
02/04/2023, 00:49
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
10 signatures
150 seconds
General
- Target setup.exe
- Size 218KB
- Sample230402-a6evmsfa7w
- SHA256 3e2a098995005be31fb1c2add68d5371c7e8cdfc0906e77f77b2526766b1a772
- MD5 d46bfe4c28ea8f730a1121e5a1d879f2
- SHA1 ee3621586e90d8776dcd352fdae32355a6615ead
- SHA512 33364c5a17cab12da5cac9cedd0191cba00808af8bf4d5934499a433bdc7e23e0df39ee77516cc7fe2fb81c1506f14b6f2082c9691a0a70bac83599c78e5aa53
- SSDEEP 3072:hWwyj0OLNtamEPrWv/+mGGbLhKzlx/33lQj5g6Cox:naD5tv/+mRKZx/lB67
- 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 636 sttaffr 5012 sttaffr - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3208 set thread context of 4792 3208 setup.exe 78 PID 636 set thread context of 5012 636 sttaffr 89 - Checks SCSI registry key(s) 3 TTPs 6 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 Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI sttaffr Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI sttaffr Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI sttaffr - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4792 setup.exe 4792 setup.exe 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found 3140 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3140 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 4792 setup.exe 5012 sttaffr - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 3140 Process not Found Token: SeCreatePagefilePrivilege 3140 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3208 wrote to memory of 4792 3208 setup.exe 78 PID 3208 wrote to memory of 4792 3208 setup.exe 78 PID 3208 wrote to memory of 4792 3208 setup.exe 78 PID 3208 wrote to memory of 4792 3208 setup.exe 78 PID 3208 wrote to memory of 4792 3208 setup.exe 78 PID 3208 wrote to memory of 4792 3208 setup.exe 78 PID 636 wrote to memory of 5012 636 sttaffr 89 PID 636 wrote to memory of 5012 636 sttaffr 89 PID 636 wrote to memory of 5012 636 sttaffr 89 PID 636 wrote to memory of 5012 636 sttaffr 89 PID 636 wrote to memory of 5012 636 sttaffr 89 PID 636 wrote to memory of 5012 636 sttaffr 89 - 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:3208 -
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:4792
-
-
C:\Users\Admin\AppData\Roaming\sttaffrC:\Users\Admin\AppData\Roaming\sttaffr1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:636 -
C:\Users\Admin\AppData\Roaming\sttaffrC:\Users\Admin\AppData\Roaming\sttaffr2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:5012
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\sttaffr
- Size 218KB
- SHA256 3e2a098995005be31fb1c2add68d5371c7e8cdfc0906e77f77b2526766b1a772
- MD5 d46bfe4c28ea8f730a1121e5a1d879f2
- SHA1 ee3621586e90d8776dcd352fdae32355a6615ead
- SHA512 33364c5a17cab12da5cac9cedd0191cba00808af8bf4d5934499a433bdc7e23e0df39ee77516cc7fe2fb81c1506f14b6f2082c9691a0a70bac83599c78e5aa53
- SSDEEP 3072:hWwyj0OLNtamEPrWv/+mGGbLhKzlx/33lQj5g6Cox:naD5tv/+mRKZx/lB67
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\sttaffr
- Size 218KB
- SHA256 3e2a098995005be31fb1c2add68d5371c7e8cdfc0906e77f77b2526766b1a772
- MD5 d46bfe4c28ea8f730a1121e5a1d879f2
- SHA1 ee3621586e90d8776dcd352fdae32355a6615ead
- SHA512 33364c5a17cab12da5cac9cedd0191cba00808af8bf4d5934499a433bdc7e23e0df39ee77516cc7fe2fb81c1506f14b6f2082c9691a0a70bac83599c78e5aa53
- SSDEEP 3072:hWwyj0OLNtamEPrWv/+mGGbLhKzlx/33lQj5g6Cox:naD5tv/+mRKZx/lB67
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\sttaffr
- Size 218KB
- SHA256 3e2a098995005be31fb1c2add68d5371c7e8cdfc0906e77f77b2526766b1a772
- MD5 d46bfe4c28ea8f730a1121e5a1d879f2
- SHA1 ee3621586e90d8776dcd352fdae32355a6615ead
- SHA512 33364c5a17cab12da5cac9cedd0191cba00808af8bf4d5934499a433bdc7e23e0df39ee77516cc7fe2fb81c1506f14b6f2082c9691a0a70bac83599c78e5aa53
- SSDEEP 3072:hWwyj0OLNtamEPrWv/+mGGbLhKzlx/33lQj5g6Cox:naD5tv/+mRKZx/lB67
- MD5 SHA1 SHA512 SSDEEP