Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system - submitted
25/04/2023, 00:38
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 325KB
- Sample230425-ay3lqsfe45
- SHA256 e44d62bd95c876a7624c2ff900348de8ca1ff4199837c4e8897f99ec70c6245b
- MD5 9d8faab99a9ee30174716e4f5404cb83
- SHA1 80cf49d631e5864ab6e0f533e00685e395815703
- SHA512 8d81b0b7d1baeb8081533cc1494b2cbfd2549f2e1ae6f75c9c2bac18e8ce958b539bd51f867a126ae1867958556ba7c23354b1c494399c3e00f4d1d360d125b2
- SSDEEP 3072:mbFpETCSzqoyXFVirO0RwK+CNl+Sc4dcd+apzoLou8up3UZQTD3QMwF5mossZZ6U:4bQeFEa0RxZ1u8cu8fZADp2gbypG
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Extracted
Family
-
smokeloader
Botnet
-
pub1
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 2424 bfesbwe 2764 bfesbwe - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4696 set thread context of 4440 4696 setup.exe 83 PID 2424 set thread context of 2764 2424 bfesbwe 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 enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI bfesbwe 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 bfesbwe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI bfesbwe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4440 setup.exe 4440 setup.exe 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found 1264 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1264 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 4440 setup.exe 2764 bfesbwe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 1264 Process not Found Token: SeCreatePagefilePrivilege 1264 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4696 wrote to memory of 4440 4696 setup.exe 83 PID 4696 wrote to memory of 4440 4696 setup.exe 83 PID 4696 wrote to memory of 4440 4696 setup.exe 83 PID 4696 wrote to memory of 4440 4696 setup.exe 83 PID 4696 wrote to memory of 4440 4696 setup.exe 83 PID 4696 wrote to memory of 4440 4696 setup.exe 83 PID 2424 wrote to memory of 2764 2424 bfesbwe 92 PID 2424 wrote to memory of 2764 2424 bfesbwe 92 PID 2424 wrote to memory of 2764 2424 bfesbwe 92 PID 2424 wrote to memory of 2764 2424 bfesbwe 92 PID 2424 wrote to memory of 2764 2424 bfesbwe 92 PID 2424 wrote to memory of 2764 2424 bfesbwe 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:4696 -
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:4440
-
-
C:\Users\Admin\AppData\Roaming\bfesbweC:\Users\Admin\AppData\Roaming\bfesbwe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2424 -
C:\Users\Admin\AppData\Roaming\bfesbweC:\Users\Admin\AppData\Roaming\bfesbwe2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:2764
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\bfesbwe
- Size 325KB
- SHA256 e44d62bd95c876a7624c2ff900348de8ca1ff4199837c4e8897f99ec70c6245b
- MD5 9d8faab99a9ee30174716e4f5404cb83
- SHA1 80cf49d631e5864ab6e0f533e00685e395815703
- SHA512 8d81b0b7d1baeb8081533cc1494b2cbfd2549f2e1ae6f75c9c2bac18e8ce958b539bd51f867a126ae1867958556ba7c23354b1c494399c3e00f4d1d360d125b2
- SSDEEP 3072:mbFpETCSzqoyXFVirO0RwK+CNl+Sc4dcd+apzoLou8up3UZQTD3QMwF5mossZZ6U:4bQeFEa0RxZ1u8cu8fZADp2gbypG
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\bfesbwe
- Size 325KB
- SHA256 e44d62bd95c876a7624c2ff900348de8ca1ff4199837c4e8897f99ec70c6245b
- MD5 9d8faab99a9ee30174716e4f5404cb83
- SHA1 80cf49d631e5864ab6e0f533e00685e395815703
- SHA512 8d81b0b7d1baeb8081533cc1494b2cbfd2549f2e1ae6f75c9c2bac18e8ce958b539bd51f867a126ae1867958556ba7c23354b1c494399c3e00f4d1d360d125b2
- SSDEEP 3072:mbFpETCSzqoyXFVirO0RwK+CNl+Sc4dcd+apzoLou8up3UZQTD3QMwF5mossZZ6U:4bQeFEa0RxZ1u8cu8fZADp2gbypG
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\bfesbwe
- Size 325KB
- SHA256 e44d62bd95c876a7624c2ff900348de8ca1ff4199837c4e8897f99ec70c6245b
- MD5 9d8faab99a9ee30174716e4f5404cb83
- SHA1 80cf49d631e5864ab6e0f533e00685e395815703
- SHA512 8d81b0b7d1baeb8081533cc1494b2cbfd2549f2e1ae6f75c9c2bac18e8ce958b539bd51f867a126ae1867958556ba7c23354b1c494399c3e00f4d1d360d125b2
- SSDEEP 3072:mbFpETCSzqoyXFVirO0RwK+CNl+Sc4dcd+apzoLou8up3UZQTD3QMwF5mossZZ6U:4bQeFEa0RxZ1u8cu8fZADp2gbypG
- MD5 SHA1 SHA512 SSDEEP