Analysis
- max time kernel
150s - max time network
148s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system - submitted
06/04/2023, 01:18
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 189KB
- Sample230406-bny18sae76
- SHA256 36c5d5042bca957245cbeb877bc7175aeb4bf5da1c6554ae7fd88ee5396b1589
- MD5 b1cf479c153346c4e920f4c9a3d349d5
- SHA1 3955b87fb6cf3199cf6b2328c2fddb2b92c10626
- SHA512 b70da68a71aa59fc1cd94777b22594e06827241b6f0268965528e81eea53a3eef709773a9a0ee6f8803f3b0539099c69bae540feb59d13cfaa09128dbc0bcd35
- SSDEEP 3072:4Fa8w3QhXN0bHl+DOi5bYcGRheqAD5zqBUTIx:Uh9mbcD9bORWquT
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Extracted
Family
-
smokeloader
Botnet
-
pub2
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 4172 uidhwjt 1528 uidhwjt - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4260 set thread context of 4272 4260 setup.exe 84 PID 4172 set thread context of 1528 4172 uidhwjt 93 - 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 uidhwjt 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 uidhwjt Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI uidhwjt - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4272 setup.exe 4272 setup.exe 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found 3188 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3188 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 4272 setup.exe 1528 uidhwjt - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 3188 Process not Found Token: SeCreatePagefilePrivilege 3188 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4260 wrote to memory of 4272 4260 setup.exe 84 PID 4260 wrote to memory of 4272 4260 setup.exe 84 PID 4260 wrote to memory of 4272 4260 setup.exe 84 PID 4260 wrote to memory of 4272 4260 setup.exe 84 PID 4260 wrote to memory of 4272 4260 setup.exe 84 PID 4260 wrote to memory of 4272 4260 setup.exe 84 PID 4172 wrote to memory of 1528 4172 uidhwjt 93 PID 4172 wrote to memory of 1528 4172 uidhwjt 93 PID 4172 wrote to memory of 1528 4172 uidhwjt 93 PID 4172 wrote to memory of 1528 4172 uidhwjt 93 PID 4172 wrote to memory of 1528 4172 uidhwjt 93 PID 4172 wrote to memory of 1528 4172 uidhwjt 93 - 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:4260 -
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:4272
-
-
C:\Users\Admin\AppData\Roaming\uidhwjtC:\Users\Admin\AppData\Roaming\uidhwjt1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4172 -
C:\Users\Admin\AppData\Roaming\uidhwjtC:\Users\Admin\AppData\Roaming\uidhwjt2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:1528
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\uidhwjt
- Size 189KB
- SHA256 36c5d5042bca957245cbeb877bc7175aeb4bf5da1c6554ae7fd88ee5396b1589
- MD5 b1cf479c153346c4e920f4c9a3d349d5
- SHA1 3955b87fb6cf3199cf6b2328c2fddb2b92c10626
- SHA512 b70da68a71aa59fc1cd94777b22594e06827241b6f0268965528e81eea53a3eef709773a9a0ee6f8803f3b0539099c69bae540feb59d13cfaa09128dbc0bcd35
- SSDEEP 3072:4Fa8w3QhXN0bHl+DOi5bYcGRheqAD5zqBUTIx:Uh9mbcD9bORWquT
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\uidhwjt
- Size 189KB
- SHA256 36c5d5042bca957245cbeb877bc7175aeb4bf5da1c6554ae7fd88ee5396b1589
- MD5 b1cf479c153346c4e920f4c9a3d349d5
- SHA1 3955b87fb6cf3199cf6b2328c2fddb2b92c10626
- SHA512 b70da68a71aa59fc1cd94777b22594e06827241b6f0268965528e81eea53a3eef709773a9a0ee6f8803f3b0539099c69bae540feb59d13cfaa09128dbc0bcd35
- SSDEEP 3072:4Fa8w3QhXN0bHl+DOi5bYcGRheqAD5zqBUTIx:Uh9mbcD9bORWquT
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\uidhwjt
- Size 189KB
- SHA256 36c5d5042bca957245cbeb877bc7175aeb4bf5da1c6554ae7fd88ee5396b1589
- MD5 b1cf479c153346c4e920f4c9a3d349d5
- SHA1 3955b87fb6cf3199cf6b2328c2fddb2b92c10626
- SHA512 b70da68a71aa59fc1cd94777b22594e06827241b6f0268965528e81eea53a3eef709773a9a0ee6f8803f3b0539099c69bae540feb59d13cfaa09128dbc0bcd35
- SSDEEP 3072:4Fa8w3QhXN0bHl+DOi5bYcGRheqAD5zqBUTIx:Uh9mbcD9bORWquT
- MD5 SHA1 SHA512 SSDEEP