Analysis
- max time kernel
152s - max time network
128s - platform
windows10-2004_x64 - resource
win10v2004-20230221-en - resource tags
arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system - submitted
01/04/2023, 01:48
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 218KB
- Sample230401-b74qtsfb75
- SHA256 6616b82058fb4019108217ce2c96cf5b0e06b9cd5cccaeff07b9104212f6adcf
- MD5 f5055234941fc06d5ab44a4d7f0143f7
- SHA1 88a0f1a6758260d5136b2ba7e8cf9d48b9d801bc
- SHA512 694c3ae085e7885babc3ae97c0376f2f8679050d0d19bd6b0477593d307ff907a4d1c49236a4961932a339e1b14eb536df8a979880997c2e1c4a1db35f277bd3
- SSDEEP 3072:Auy+8p9tmIX+bXoTogGN+Y3/c+XfMuF9HGopALv+Yw5sMHIW:Nz8vthiXoTo9Nh/csfM6vKWuMoW
- 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 836 abvvbsa 4176 abvvbsa - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4708 set thread context of 4632 4708 setup.exe 83 PID 836 set thread context of 4176 836 abvvbsa 92 - 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 abvvbsa Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI abvvbsa Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI abvvbsa - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4632 setup.exe 4632 setup.exe 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found 3128 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3128 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 4632 setup.exe 4176 abvvbsa - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 3128 Process not Found Token: SeCreatePagefilePrivilege 3128 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4708 wrote to memory of 4632 4708 setup.exe 83 PID 4708 wrote to memory of 4632 4708 setup.exe 83 PID 4708 wrote to memory of 4632 4708 setup.exe 83 PID 4708 wrote to memory of 4632 4708 setup.exe 83 PID 4708 wrote to memory of 4632 4708 setup.exe 83 PID 4708 wrote to memory of 4632 4708 setup.exe 83 PID 836 wrote to memory of 4176 836 abvvbsa 92 PID 836 wrote to memory of 4176 836 abvvbsa 92 PID 836 wrote to memory of 4176 836 abvvbsa 92 PID 836 wrote to memory of 4176 836 abvvbsa 92 PID 836 wrote to memory of 4176 836 abvvbsa 92 PID 836 wrote to memory of 4176 836 abvvbsa 92 - 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:4708 -
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:4632
-
-
C:\Users\Admin\AppData\Roaming\abvvbsaC:\Users\Admin\AppData\Roaming\abvvbsa1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:836 -
C:\Users\Admin\AppData\Roaming\abvvbsaC:\Users\Admin\AppData\Roaming\abvvbsa2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:4176
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\abvvbsa
- Size 218KB
- SHA256 6616b82058fb4019108217ce2c96cf5b0e06b9cd5cccaeff07b9104212f6adcf
- MD5 f5055234941fc06d5ab44a4d7f0143f7
- SHA1 88a0f1a6758260d5136b2ba7e8cf9d48b9d801bc
- SHA512 694c3ae085e7885babc3ae97c0376f2f8679050d0d19bd6b0477593d307ff907a4d1c49236a4961932a339e1b14eb536df8a979880997c2e1c4a1db35f277bd3
- SSDEEP 3072:Auy+8p9tmIX+bXoTogGN+Y3/c+XfMuF9HGopALv+Yw5sMHIW:Nz8vthiXoTo9Nh/csfM6vKWuMoW
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\abvvbsa
- Size 218KB
- SHA256 6616b82058fb4019108217ce2c96cf5b0e06b9cd5cccaeff07b9104212f6adcf
- MD5 f5055234941fc06d5ab44a4d7f0143f7
- SHA1 88a0f1a6758260d5136b2ba7e8cf9d48b9d801bc
- SHA512 694c3ae085e7885babc3ae97c0376f2f8679050d0d19bd6b0477593d307ff907a4d1c49236a4961932a339e1b14eb536df8a979880997c2e1c4a1db35f277bd3
- SSDEEP 3072:Auy+8p9tmIX+bXoTogGN+Y3/c+XfMuF9HGopALv+Yw5sMHIW:Nz8vthiXoTo9Nh/csfM6vKWuMoW
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\abvvbsa
- Size 218KB
- SHA256 6616b82058fb4019108217ce2c96cf5b0e06b9cd5cccaeff07b9104212f6adcf
- MD5 f5055234941fc06d5ab44a4d7f0143f7
- SHA1 88a0f1a6758260d5136b2ba7e8cf9d48b9d801bc
- SHA512 694c3ae085e7885babc3ae97c0376f2f8679050d0d19bd6b0477593d307ff907a4d1c49236a4961932a339e1b14eb536df8a979880997c2e1c4a1db35f277bd3
- SSDEEP 3072:Auy+8p9tmIX+bXoTogGN+Y3/c+XfMuF9HGopALv+Yw5sMHIW:Nz8vthiXoTo9Nh/csfM6vKWuMoW
- MD5 SHA1 SHA512 SSDEEP