Analysis
- max time kernel
150s - max time network
139s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system - submitted
19/12/2022, 14:29
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-en
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20221111-en
10 signatures
150 seconds
General
- Target file.exe
- Size 311KB
- Sample221219-rtj29sfc33
- SHA256 eeaadb6bda0816a67ce1750b68a4a876a16dc32e3762713924cc8daba44fd000
- MD5 c2f36bb8bc70c31e02d50c64052f6378
- SHA1 14106b3e93a95969080c25b8e6214ae7b6790a9f
- SHA512 1a327bb72c23e48ca80b704de8f52380b1eebb9b46af46fee6d5f056f806651bc67b03785dedefcea81d34f18b7c4d0df93c380f42544292c35fed4c8f6fa568
- SSDEEP 6144:mYH6LXKghvbkfqPCNTXGml9yVeKNTH4rWlRjO1n:mYarKgtbkf4CnyVtN8rW9u
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/4532-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/2420-135-0x00000000007F0000-0x00000000007F9000-memory.dmp family_smokeloader behavioral2/memory/4532-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4532-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/5048-168-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/5048-169-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 4980 aswsubr 5048 aswsubr - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2420 set thread context of 4532 2420 file.exe 81 PID 4980 set thread context of 5048 4980 aswsubr 90 - 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 file.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI aswsubr Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI aswsubr Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI aswsubr - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4532 file.exe 4532 file.exe 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found 388 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 388 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 4532 file.exe 5048 aswsubr - Suspicious use of AdjustPrivilegeToken 10 IoCs
description pid Process Token: SeShutdownPrivilege 388 Process not Found Token: SeCreatePagefilePrivilege 388 Process not Found Token: SeShutdownPrivilege 388 Process not Found Token: SeCreatePagefilePrivilege 388 Process not Found Token: SeShutdownPrivilege 388 Process not Found Token: SeCreatePagefilePrivilege 388 Process not Found Token: SeShutdownPrivilege 388 Process not Found Token: SeCreatePagefilePrivilege 388 Process not Found Token: SeShutdownPrivilege 388 Process not Found Token: SeCreatePagefilePrivilege 388 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2420 wrote to memory of 4532 2420 file.exe 81 PID 2420 wrote to memory of 4532 2420 file.exe 81 PID 2420 wrote to memory of 4532 2420 file.exe 81 PID 2420 wrote to memory of 4532 2420 file.exe 81 PID 2420 wrote to memory of 4532 2420 file.exe 81 PID 2420 wrote to memory of 4532 2420 file.exe 81 PID 4980 wrote to memory of 5048 4980 aswsubr 90 PID 4980 wrote to memory of 5048 4980 aswsubr 90 PID 4980 wrote to memory of 5048 4980 aswsubr 90 PID 4980 wrote to memory of 5048 4980 aswsubr 90 PID 4980 wrote to memory of 5048 4980 aswsubr 90 PID 4980 wrote to memory of 5048 4980 aswsubr 90
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:2420 -
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:4532
-
-
C:\Users\Admin\AppData\Roaming\aswsubrC:\Users\Admin\AppData\Roaming\aswsubr1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4980 -
C:\Users\Admin\AppData\Roaming\aswsubrC:\Users\Admin\AppData\Roaming\aswsubr2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:5048
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\aswsubr
- Size 311KB
- SHA256 eeaadb6bda0816a67ce1750b68a4a876a16dc32e3762713924cc8daba44fd000
- MD5 c2f36bb8bc70c31e02d50c64052f6378
- SHA1 14106b3e93a95969080c25b8e6214ae7b6790a9f
- SHA512 1a327bb72c23e48ca80b704de8f52380b1eebb9b46af46fee6d5f056f806651bc67b03785dedefcea81d34f18b7c4d0df93c380f42544292c35fed4c8f6fa568
- SSDEEP 6144:mYH6LXKghvbkfqPCNTXGml9yVeKNTH4rWlRjO1n:mYarKgtbkf4CnyVtN8rW9u
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\aswsubr
- Size 311KB
- SHA256 eeaadb6bda0816a67ce1750b68a4a876a16dc32e3762713924cc8daba44fd000
- MD5 c2f36bb8bc70c31e02d50c64052f6378
- SHA1 14106b3e93a95969080c25b8e6214ae7b6790a9f
- SHA512 1a327bb72c23e48ca80b704de8f52380b1eebb9b46af46fee6d5f056f806651bc67b03785dedefcea81d34f18b7c4d0df93c380f42544292c35fed4c8f6fa568
- SSDEEP 6144:mYH6LXKghvbkfqPCNTXGml9yVeKNTH4rWlRjO1n:mYarKgtbkf4CnyVtN8rW9u
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\aswsubr
- Size 311KB
- SHA256 eeaadb6bda0816a67ce1750b68a4a876a16dc32e3762713924cc8daba44fd000
- MD5 c2f36bb8bc70c31e02d50c64052f6378
- SHA1 14106b3e93a95969080c25b8e6214ae7b6790a9f
- SHA512 1a327bb72c23e48ca80b704de8f52380b1eebb9b46af46fee6d5f056f806651bc67b03785dedefcea81d34f18b7c4d0df93c380f42544292c35fed4c8f6fa568
- SSDEEP 6144:mYH6LXKghvbkfqPCNTXGml9yVeKNTH4rWlRjO1n:mYarKgtbkf4CnyVtN8rW9u
- MD5 SHA1 SHA512 SSDEEP