Analysis
- max time kernel
152s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system - submitted
01/04/2023, 01:29
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 217KB
- Sample230401-bv85safa66
- SHA256 eb68008955ec7c622249003cd027637f905acbb708a07bfb30fc614989400203
- MD5 3c3275f46cf246eccbbcfa6a9f3dd933
- SHA1 b5df18909c4f170cdbf093f1050b60adf8e90a70
- SHA512 9485fe87e3a9a18fb976060aedafb83af059f65698c307e22c74b3cfb24200c8c589b98751cef23d27390c5ffff37b1d78c737c0d6709e39201f4862464a747a
- SSDEEP 3072:vDiyawkEvL7Jusb52y246xRSDl+Qd28AzfkZhFppwnT5gTORV1om+X:+4kEws3DMmdd+IZhFvwmTO/1orX
- 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 1552 cucfhvg 1880 cucfhvg - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 1980 set thread context of 4656 1980 setup.exe 85 PID 1552 set thread context of 1880 1552 cucfhvg 94 - Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process 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 cucfhvg Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI cucfhvg Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI cucfhvg Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI setup.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4656 setup.exe 4656 setup.exe 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3220 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 4656 setup.exe 1880 cucfhvg - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 3220 Process not Found Token: SeCreatePagefilePrivilege 3220 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 1980 wrote to memory of 4656 1980 setup.exe 85 PID 1980 wrote to memory of 4656 1980 setup.exe 85 PID 1980 wrote to memory of 4656 1980 setup.exe 85 PID 1980 wrote to memory of 4656 1980 setup.exe 85 PID 1980 wrote to memory of 4656 1980 setup.exe 85 PID 1980 wrote to memory of 4656 1980 setup.exe 85 PID 1552 wrote to memory of 1880 1552 cucfhvg 94 PID 1552 wrote to memory of 1880 1552 cucfhvg 94 PID 1552 wrote to memory of 1880 1552 cucfhvg 94 PID 1552 wrote to memory of 1880 1552 cucfhvg 94 PID 1552 wrote to memory of 1880 1552 cucfhvg 94 PID 1552 wrote to memory of 1880 1552 cucfhvg 94 - 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:1980 -
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:4656
-
-
C:\Users\Admin\AppData\Roaming\cucfhvgC:\Users\Admin\AppData\Roaming\cucfhvg1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1552 -
C:\Users\Admin\AppData\Roaming\cucfhvgC:\Users\Admin\AppData\Roaming\cucfhvg2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:1880
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\cucfhvg
- Size 217KB
- SHA256 eb68008955ec7c622249003cd027637f905acbb708a07bfb30fc614989400203
- MD5 3c3275f46cf246eccbbcfa6a9f3dd933
- SHA1 b5df18909c4f170cdbf093f1050b60adf8e90a70
- SHA512 9485fe87e3a9a18fb976060aedafb83af059f65698c307e22c74b3cfb24200c8c589b98751cef23d27390c5ffff37b1d78c737c0d6709e39201f4862464a747a
- SSDEEP 3072:vDiyawkEvL7Jusb52y246xRSDl+Qd28AzfkZhFppwnT5gTORV1om+X:+4kEws3DMmdd+IZhFvwmTO/1orX
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\cucfhvg
- Size 217KB
- SHA256 eb68008955ec7c622249003cd027637f905acbb708a07bfb30fc614989400203
- MD5 3c3275f46cf246eccbbcfa6a9f3dd933
- SHA1 b5df18909c4f170cdbf093f1050b60adf8e90a70
- SHA512 9485fe87e3a9a18fb976060aedafb83af059f65698c307e22c74b3cfb24200c8c589b98751cef23d27390c5ffff37b1d78c737c0d6709e39201f4862464a747a
- SSDEEP 3072:vDiyawkEvL7Jusb52y246xRSDl+Qd28AzfkZhFppwnT5gTORV1om+X:+4kEws3DMmdd+IZhFvwmTO/1orX
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\cucfhvg
- Size 217KB
- SHA256 eb68008955ec7c622249003cd027637f905acbb708a07bfb30fc614989400203
- MD5 3c3275f46cf246eccbbcfa6a9f3dd933
- SHA1 b5df18909c4f170cdbf093f1050b60adf8e90a70
- SHA512 9485fe87e3a9a18fb976060aedafb83af059f65698c307e22c74b3cfb24200c8c589b98751cef23d27390c5ffff37b1d78c737c0d6709e39201f4862464a747a
- SSDEEP 3072:vDiyawkEvL7Jusb52y246xRSDl+Qd28AzfkZhFppwnT5gTORV1om+X:+4kEws3DMmdd+IZhFvwmTO/1orX
- MD5 SHA1 SHA512 SSDEEP