Analysis
- max time kernel
150s - max time network
141s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
24/12/2022, 01:39
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target file.exe
- Size 225KB
- Sample221224-b2y86acf61
- SHA256 8ea8efb66b271058f1d2d293158de5574833c23d29449db558b5ad9e8d6c5baa
- MD5 13c6b234eec74a68aac3b4178d8300d0
- SHA1 37094abdd52d15000ccac936738ab3b854199eb3
- SHA512 d3af370e1d7aeada538996698c5ef6e60f2a31abaab8a02878af0f6d5286ea6c9875d9cf6b141a10f082b6d6ed9184cd4428b9b1edaf981eba916674c8b4ae3f
- SSDEEP 6144:xL5N410FQIYWElEKFS9L8o0k20D3+cHk5o:x1N4FWEX610kL3Y
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/4056-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4348-135-0x00000000005E0000-0x00000000005E9000-memory.dmp family_smokeloader behavioral2/memory/4056-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4056-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/404-144-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/404-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 1440 htvrsbj 404 htvrsbj - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4348 set thread context of 4056 4348 file.exe 82 PID 1440 set thread context of 404 1440 htvrsbj 91 - 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 htvrsbj Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI htvrsbj Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI htvrsbj 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 - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4056 file.exe 4056 file.exe 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found 2804 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2804 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 4056 file.exe 404 htvrsbj - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 2804 Process not Found Token: SeCreatePagefilePrivilege 2804 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4348 wrote to memory of 4056 4348 file.exe 82 PID 4348 wrote to memory of 4056 4348 file.exe 82 PID 4348 wrote to memory of 4056 4348 file.exe 82 PID 4348 wrote to memory of 4056 4348 file.exe 82 PID 4348 wrote to memory of 4056 4348 file.exe 82 PID 4348 wrote to memory of 4056 4348 file.exe 82 PID 1440 wrote to memory of 404 1440 htvrsbj 91 PID 1440 wrote to memory of 404 1440 htvrsbj 91 PID 1440 wrote to memory of 404 1440 htvrsbj 91 PID 1440 wrote to memory of 404 1440 htvrsbj 91 PID 1440 wrote to memory of 404 1440 htvrsbj 91 PID 1440 wrote to memory of 404 1440 htvrsbj 91
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:4348 -
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:4056
-
-
C:\Users\Admin\AppData\Roaming\htvrsbjC:\Users\Admin\AppData\Roaming\htvrsbj1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1440 -
C:\Users\Admin\AppData\Roaming\htvrsbjC:\Users\Admin\AppData\Roaming\htvrsbj2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:404
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Roaming\htvrsbj
- Size 225KB
- SHA256 8ea8efb66b271058f1d2d293158de5574833c23d29449db558b5ad9e8d6c5baa
- MD5 13c6b234eec74a68aac3b4178d8300d0
- SHA1 37094abdd52d15000ccac936738ab3b854199eb3
- SHA512 d3af370e1d7aeada538996698c5ef6e60f2a31abaab8a02878af0f6d5286ea6c9875d9cf6b141a10f082b6d6ed9184cd4428b9b1edaf981eba916674c8b4ae3f
- SSDEEP 6144:xL5N410FQIYWElEKFS9L8o0k20D3+cHk5o:x1N4FWEX610kL3Y
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\htvrsbj
- Size 225KB
- SHA256 8ea8efb66b271058f1d2d293158de5574833c23d29449db558b5ad9e8d6c5baa
- MD5 13c6b234eec74a68aac3b4178d8300d0
- SHA1 37094abdd52d15000ccac936738ab3b854199eb3
- SHA512 d3af370e1d7aeada538996698c5ef6e60f2a31abaab8a02878af0f6d5286ea6c9875d9cf6b141a10f082b6d6ed9184cd4428b9b1edaf981eba916674c8b4ae3f
- SSDEEP 6144:xL5N410FQIYWElEKFS9L8o0k20D3+cHk5o:x1N4FWEX610kL3Y
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\htvrsbj
- Size 225KB
- SHA256 8ea8efb66b271058f1d2d293158de5574833c23d29449db558b5ad9e8d6c5baa
- MD5 13c6b234eec74a68aac3b4178d8300d0
- SHA1 37094abdd52d15000ccac936738ab3b854199eb3
- SHA512 d3af370e1d7aeada538996698c5ef6e60f2a31abaab8a02878af0f6d5286ea6c9875d9cf6b141a10f082b6d6ed9184cd4428b9b1edaf981eba916674c8b4ae3f
- SSDEEP 6144:xL5N410FQIYWElEKFS9L8o0k20D3+cHk5o:x1N4FWEX610kL3Y
- MD5 SHA1 SHA512 SSDEEP