Analysis
- max time kernel
151s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system - submitted
07/02/2023, 01:19
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
windows7-x64
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
12 signatures
150 seconds
General
- Target file.exe
- Size 299KB
- Sample230207-bph2eagh37
- SHA256 13af9de5b7f7fca27f2a3f71f6139d0dd5a4fb64718252df02c3504000f713cb
- MD5 6d009a731642082c57d26e3525e57456
- SHA1 616815562a16e5fe87a514eaebf3d560f4a5f527
- SHA512 24f9677da85f894f6e3e0102cdb5aeb6e7cb3d8bc8efe49361fe8c00d2be9e3f81ee7f4485011975565dfa42b5a78b36ede1c8c4913516bcfb827e276af8a7f3
- SSDEEP 3072:Kab6bldLYwRm5GO6bBiBQdk3SHvRuQjiMTE5y8a5H:fWdLY3ybBiBkpPRuQj9b8a
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/1124-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/3368-135-0x0000000000550000-0x0000000000559000-memory.dmp family_smokeloader behavioral2/memory/1124-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1124-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1132-144-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1132-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 4424 fwjuhtd 1132 fwjuhtd - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3368 set thread context of 1124 3368 file.exe 83 PID 4424 set thread context of 1132 4424 fwjuhtd 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 queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI fwjuhtd Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI fwjuhtd 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 fwjuhtd - Modifies registry class 3 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ Process not Found Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ Process not Found Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ Process not Found - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1124 file.exe 1124 file.exe 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found 964 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 964 Process not Found - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 1124 file.exe - Suspicious use of AdjustPrivilegeToken 12 IoCs
description pid Process Token: SeShutdownPrivilege 964 Process not Found Token: SeCreatePagefilePrivilege 964 Process not Found Token: SeShutdownPrivilege 964 Process not Found Token: SeCreatePagefilePrivilege 964 Process not Found Token: SeShutdownPrivilege 964 Process not Found Token: SeCreatePagefilePrivilege 964 Process not Found Token: SeShutdownPrivilege 964 Process not Found Token: SeCreatePagefilePrivilege 964 Process not Found Token: SeShutdownPrivilege 964 Process not Found Token: SeCreatePagefilePrivilege 964 Process not Found Token: SeShutdownPrivilege 964 Process not Found Token: SeCreatePagefilePrivilege 964 Process not Found - Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 964 Process not Found 964 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3368 wrote to memory of 1124 3368 file.exe 83 PID 3368 wrote to memory of 1124 3368 file.exe 83 PID 3368 wrote to memory of 1124 3368 file.exe 83 PID 3368 wrote to memory of 1124 3368 file.exe 83 PID 3368 wrote to memory of 1124 3368 file.exe 83 PID 3368 wrote to memory of 1124 3368 file.exe 83 PID 4424 wrote to memory of 1132 4424 fwjuhtd 92 PID 4424 wrote to memory of 1132 4424 fwjuhtd 92 PID 4424 wrote to memory of 1132 4424 fwjuhtd 92 PID 4424 wrote to memory of 1132 4424 fwjuhtd 92 PID 4424 wrote to memory of 1132 4424 fwjuhtd 92 PID 4424 wrote to memory of 1132 4424 fwjuhtd 92
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:3368 -
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:1124
-
-
C:\Users\Admin\AppData\Roaming\fwjuhtdC:\Users\Admin\AppData\Roaming\fwjuhtd1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4424 -
C:\Users\Admin\AppData\Roaming\fwjuhtdC:\Users\Admin\AppData\Roaming\fwjuhtd2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
PID:1132
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\fwjuhtd
- Size 299KB
- SHA256 13af9de5b7f7fca27f2a3f71f6139d0dd5a4fb64718252df02c3504000f713cb
- MD5 6d009a731642082c57d26e3525e57456
- SHA1 616815562a16e5fe87a514eaebf3d560f4a5f527
- SHA512 24f9677da85f894f6e3e0102cdb5aeb6e7cb3d8bc8efe49361fe8c00d2be9e3f81ee7f4485011975565dfa42b5a78b36ede1c8c4913516bcfb827e276af8a7f3
- SSDEEP 3072:Kab6bldLYwRm5GO6bBiBQdk3SHvRuQjiMTE5y8a5H:fWdLY3ybBiBkpPRuQj9b8a
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\fwjuhtd
- Size 299KB
- SHA256 13af9de5b7f7fca27f2a3f71f6139d0dd5a4fb64718252df02c3504000f713cb
- MD5 6d009a731642082c57d26e3525e57456
- SHA1 616815562a16e5fe87a514eaebf3d560f4a5f527
- SHA512 24f9677da85f894f6e3e0102cdb5aeb6e7cb3d8bc8efe49361fe8c00d2be9e3f81ee7f4485011975565dfa42b5a78b36ede1c8c4913516bcfb827e276af8a7f3
- SSDEEP 3072:Kab6bldLYwRm5GO6bBiBQdk3SHvRuQjiMTE5y8a5H:fWdLY3ybBiBkpPRuQj9b8a
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\fwjuhtd
- Size 299KB
- SHA256 13af9de5b7f7fca27f2a3f71f6139d0dd5a4fb64718252df02c3504000f713cb
- MD5 6d009a731642082c57d26e3525e57456
- SHA1 616815562a16e5fe87a514eaebf3d560f4a5f527
- SHA512 24f9677da85f894f6e3e0102cdb5aeb6e7cb3d8bc8efe49361fe8c00d2be9e3f81ee7f4485011975565dfa42b5a78b36ede1c8c4913516bcfb827e276af8a7f3
- SSDEEP 3072:Kab6bldLYwRm5GO6bBiBQdk3SHvRuQjiMTE5y8a5H:fWdLY3ybBiBkpPRuQj9b8a
- MD5 SHA1 SHA512 SSDEEP