Analysis
- max time kernel
150s - max time network
145s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system - submitted
23/03/2023, 16:08
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20230220-en
windows7-x64
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20230220-en
windows10-2004-x64
11 signatures
150 seconds
General
- Target file.exe
- Size 250KB
- Sample230323-tk74vagg38
- SHA256 2460b900e7cca5a66f1d84ba794d0a471496165b3225e9e7a9acf6ee1ec8e887
- MD5 efa38b382d4573acf04a35d0add913bd
- SHA1 95f164e9809d34d9d0b95ed2d26932762f18c52e
- SHA512 f83b575e594384aa513cd1d8c15e74a66b9df873c751a2c749349888059b4e63fc0935427b3bbba27b2aef917fc7d5c177a5fba65ec966c6a30f30388e8d4f4b
- SSDEEP 3072:jUfGVdpcaV0LkN5iSx3ffSOp8Ij39aNKwycwt+otwk3mnLPzJ5Rupot:acV0L6Ew3zp/9NVcEtkLR4
- 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 4532 bfeutgf 2808 bfeutgf - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2556 set thread context of 1056 2556 file.exe 85 PID 4532 set thread context of 2808 4532 bfeutgf 109 - 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 bfeutgf Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI bfeutgf Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI bfeutgf Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe - Modifies registry class 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ Process not Found Key created \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ Process not Found - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1056 file.exe 1056 file.exe 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found 3228 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3228 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 1056 file.exe 2808 bfeutgf - Suspicious use of AdjustPrivilegeToken 10 IoCs
description pid Process Token: SeShutdownPrivilege 3228 Process not Found Token: SeCreatePagefilePrivilege 3228 Process not Found Token: SeShutdownPrivilege 3228 Process not Found Token: SeCreatePagefilePrivilege 3228 Process not Found Token: SeShutdownPrivilege 3228 Process not Found Token: SeCreatePagefilePrivilege 3228 Process not Found Token: SeShutdownPrivilege 3228 Process not Found Token: SeCreatePagefilePrivilege 3228 Process not Found Token: SeShutdownPrivilege 3228 Process not Found Token: SeCreatePagefilePrivilege 3228 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2556 wrote to memory of 1056 2556 file.exe 85 PID 2556 wrote to memory of 1056 2556 file.exe 85 PID 2556 wrote to memory of 1056 2556 file.exe 85 PID 2556 wrote to memory of 1056 2556 file.exe 85 PID 2556 wrote to memory of 1056 2556 file.exe 85 PID 2556 wrote to memory of 1056 2556 file.exe 85 PID 4532 wrote to memory of 2808 4532 bfeutgf 109 PID 4532 wrote to memory of 2808 4532 bfeutgf 109 PID 4532 wrote to memory of 2808 4532 bfeutgf 109 PID 4532 wrote to memory of 2808 4532 bfeutgf 109 PID 4532 wrote to memory of 2808 4532 bfeutgf 109 PID 4532 wrote to memory of 2808 4532 bfeutgf 109 - 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\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2556 -
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:1056
-
-
C:\Users\Admin\AppData\Roaming\bfeutgfC:\Users\Admin\AppData\Roaming\bfeutgf1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4532 -
C:\Users\Admin\AppData\Roaming\bfeutgfC:\Users\Admin\AppData\Roaming\bfeutgf2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:2808
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\bfeutgf
- Size 250KB
- SHA256 2460b900e7cca5a66f1d84ba794d0a471496165b3225e9e7a9acf6ee1ec8e887
- MD5 efa38b382d4573acf04a35d0add913bd
- SHA1 95f164e9809d34d9d0b95ed2d26932762f18c52e
- SHA512 f83b575e594384aa513cd1d8c15e74a66b9df873c751a2c749349888059b4e63fc0935427b3bbba27b2aef917fc7d5c177a5fba65ec966c6a30f30388e8d4f4b
- SSDEEP 3072:jUfGVdpcaV0LkN5iSx3ffSOp8Ij39aNKwycwt+otwk3mnLPzJ5Rupot:acV0L6Ew3zp/9NVcEtkLR4
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\bfeutgf
- Size 250KB
- SHA256 2460b900e7cca5a66f1d84ba794d0a471496165b3225e9e7a9acf6ee1ec8e887
- MD5 efa38b382d4573acf04a35d0add913bd
- SHA1 95f164e9809d34d9d0b95ed2d26932762f18c52e
- SHA512 f83b575e594384aa513cd1d8c15e74a66b9df873c751a2c749349888059b4e63fc0935427b3bbba27b2aef917fc7d5c177a5fba65ec966c6a30f30388e8d4f4b
- SSDEEP 3072:jUfGVdpcaV0LkN5iSx3ffSOp8Ij39aNKwycwt+otwk3mnLPzJ5Rupot:acV0L6Ew3zp/9NVcEtkLR4
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\bfeutgf
- Size 250KB
- SHA256 2460b900e7cca5a66f1d84ba794d0a471496165b3225e9e7a9acf6ee1ec8e887
- MD5 efa38b382d4573acf04a35d0add913bd
- SHA1 95f164e9809d34d9d0b95ed2d26932762f18c52e
- SHA512 f83b575e594384aa513cd1d8c15e74a66b9df873c751a2c749349888059b4e63fc0935427b3bbba27b2aef917fc7d5c177a5fba65ec966c6a30f30388e8d4f4b
- SSDEEP 3072:jUfGVdpcaV0LkN5iSx3ffSOp8Ij39aNKwycwt+otwk3mnLPzJ5Rupot:acV0L6Ew3zp/9NVcEtkLR4
- MD5 SHA1 SHA512 SSDEEP