Analysis
- max time kernel
150s - max time network
140s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system - submitted
15/02/2023, 08:09
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
win10v2004-20221111-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target file.exe
- Size 196KB
- Sample230215-j15csaae7x
- SHA256 bee2b04bf43e5cbce0db2179cfbcdf6a76d2fd893b8d5804ba1da75884fa22ec
- MD5 ed00b531cf8c994e7bfacde5d5377fea
- SHA1 acebdc4538166861de77918ec3c076dde0482235
- SHA512 be8dcf80e91b756a8a1db2d4226f44f6b744c8b239ebf3885b1934aa11c9b76274c856e8ba73ac6deda64d434d98c25b849a75e53c0f829afadeeb59007904ab
- SSDEEP 3072:BS36Oe8Lh7Kuz1RkzDwmHjLgUesPL3iYvqxkrwLtzDTixVN:BS6heh7KuArv1RNatLtzDT
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/3272-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4712-135-0x00000000005F0000-0x00000000005F9000-memory.dmp family_smokeloader behavioral2/memory/3272-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/3272-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/812-144-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/812-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 1260 tfcbjef 812 tfcbjef - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4712 set thread context of 3272 4712 file.exe 79 PID 1260 set thread context of 812 1260 tfcbjef 82 - 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 tfcbjef Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI tfcbjef Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI tfcbjef 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 3272 file.exe 3272 file.exe 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found 2184 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2184 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 3272 file.exe 812 tfcbjef - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 2184 Process not Found Token: SeCreatePagefilePrivilege 2184 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4712 wrote to memory of 3272 4712 file.exe 79 PID 4712 wrote to memory of 3272 4712 file.exe 79 PID 4712 wrote to memory of 3272 4712 file.exe 79 PID 4712 wrote to memory of 3272 4712 file.exe 79 PID 4712 wrote to memory of 3272 4712 file.exe 79 PID 4712 wrote to memory of 3272 4712 file.exe 79 PID 1260 wrote to memory of 812 1260 tfcbjef 82 PID 1260 wrote to memory of 812 1260 tfcbjef 82 PID 1260 wrote to memory of 812 1260 tfcbjef 82 PID 1260 wrote to memory of 812 1260 tfcbjef 82 PID 1260 wrote to memory of 812 1260 tfcbjef 82 PID 1260 wrote to memory of 812 1260 tfcbjef 82
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:4712 -
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:3272
-
-
C:\Users\Admin\AppData\Roaming\tfcbjefC:\Users\Admin\AppData\Roaming\tfcbjef1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1260 -
C:\Users\Admin\AppData\Roaming\tfcbjefC:\Users\Admin\AppData\Roaming\tfcbjef2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:812
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\tfcbjef
- Size 196KB
- SHA256 bee2b04bf43e5cbce0db2179cfbcdf6a76d2fd893b8d5804ba1da75884fa22ec
- MD5 ed00b531cf8c994e7bfacde5d5377fea
- SHA1 acebdc4538166861de77918ec3c076dde0482235
- SHA512 be8dcf80e91b756a8a1db2d4226f44f6b744c8b239ebf3885b1934aa11c9b76274c856e8ba73ac6deda64d434d98c25b849a75e53c0f829afadeeb59007904ab
- SSDEEP 3072:BS36Oe8Lh7Kuz1RkzDwmHjLgUesPL3iYvqxkrwLtzDTixVN:BS6heh7KuArv1RNatLtzDT
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\tfcbjef
- Size 196KB
- SHA256 bee2b04bf43e5cbce0db2179cfbcdf6a76d2fd893b8d5804ba1da75884fa22ec
- MD5 ed00b531cf8c994e7bfacde5d5377fea
- SHA1 acebdc4538166861de77918ec3c076dde0482235
- SHA512 be8dcf80e91b756a8a1db2d4226f44f6b744c8b239ebf3885b1934aa11c9b76274c856e8ba73ac6deda64d434d98c25b849a75e53c0f829afadeeb59007904ab
- SSDEEP 3072:BS36Oe8Lh7Kuz1RkzDwmHjLgUesPL3iYvqxkrwLtzDTixVN:BS6heh7KuArv1RNatLtzDT
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\tfcbjef
- Size 196KB
- SHA256 bee2b04bf43e5cbce0db2179cfbcdf6a76d2fd893b8d5804ba1da75884fa22ec
- MD5 ed00b531cf8c994e7bfacde5d5377fea
- SHA1 acebdc4538166861de77918ec3c076dde0482235
- SHA512 be8dcf80e91b756a8a1db2d4226f44f6b744c8b239ebf3885b1934aa11c9b76274c856e8ba73ac6deda64d434d98c25b849a75e53c0f829afadeeb59007904ab
- SSDEEP 3072:BS36Oe8Lh7Kuz1RkzDwmHjLgUesPL3iYvqxkrwLtzDTixVN:BS6heh7KuArv1RNatLtzDT
- MD5 SHA1 SHA512 SSDEEP