Analysis
- max time kernel
150s - max time network
117s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system - submitted
17/12/2022, 14:08
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 215KB
- Sample221217-rfjvcabe8x
- SHA256 6a5b4784f56646fee9fa12d087eb0e680baed9b07736cbecb8aadebec628f5c8
- MD5 51fd6710d29fd3505128f71c91ab0d21
- SHA1 b0bc82beef09799708964af638b312ffb6825c7d
- SHA512 88a23c372905de0a01a43debcda44782e5c4ef3dcb329caf7f9327cd812516d255c9c50219aa5fbe8e053012ca444bf3e22dbfd09b7a93a76c24b5bb78c244eb
- SSDEEP 3072:RsIPHdDL1RTR7hJngque2rLI3iVnzBj02ZBz88/g3xomwLAB2vG3ERWR3Le:LP9DL1/nruzFPdg3Cdi2eU0V6
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/1684-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/3624-135-0x00000000001F0000-0x00000000001F9000-memory.dmp family_smokeloader behavioral2/memory/1684-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1684-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/3004-144-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/3004-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 2124 biafeib 3004 biafeib - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3624 set thread context of 1684 3624 file.exe 83 PID 2124 set thread context of 3004 2124 biafeib 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 file.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI biafeib Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI biafeib Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI biafeib Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1684 file.exe 1684 file.exe 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found 1012 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1012 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 1684 file.exe 3004 biafeib - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 1012 Process not Found Token: SeCreatePagefilePrivilege 1012 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3624 wrote to memory of 1684 3624 file.exe 83 PID 3624 wrote to memory of 1684 3624 file.exe 83 PID 3624 wrote to memory of 1684 3624 file.exe 83 PID 3624 wrote to memory of 1684 3624 file.exe 83 PID 3624 wrote to memory of 1684 3624 file.exe 83 PID 3624 wrote to memory of 1684 3624 file.exe 83 PID 2124 wrote to memory of 3004 2124 biafeib 92 PID 2124 wrote to memory of 3004 2124 biafeib 92 PID 2124 wrote to memory of 3004 2124 biafeib 92 PID 2124 wrote to memory of 3004 2124 biafeib 92 PID 2124 wrote to memory of 3004 2124 biafeib 92 PID 2124 wrote to memory of 3004 2124 biafeib 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:3624 -
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:1684
-
-
C:\Users\Admin\AppData\Roaming\biafeibC:\Users\Admin\AppData\Roaming\biafeib1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2124 -
C:\Users\Admin\AppData\Roaming\biafeibC:\Users\Admin\AppData\Roaming\biafeib2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:3004
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\biafeib
- Size 215KB
- SHA256 6a5b4784f56646fee9fa12d087eb0e680baed9b07736cbecb8aadebec628f5c8
- MD5 51fd6710d29fd3505128f71c91ab0d21
- SHA1 b0bc82beef09799708964af638b312ffb6825c7d
- SHA512 88a23c372905de0a01a43debcda44782e5c4ef3dcb329caf7f9327cd812516d255c9c50219aa5fbe8e053012ca444bf3e22dbfd09b7a93a76c24b5bb78c244eb
- SSDEEP 3072:RsIPHdDL1RTR7hJngque2rLI3iVnzBj02ZBz88/g3xomwLAB2vG3ERWR3Le:LP9DL1/nruzFPdg3Cdi2eU0V6
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\biafeib
- Size 215KB
- SHA256 6a5b4784f56646fee9fa12d087eb0e680baed9b07736cbecb8aadebec628f5c8
- MD5 51fd6710d29fd3505128f71c91ab0d21
- SHA1 b0bc82beef09799708964af638b312ffb6825c7d
- SHA512 88a23c372905de0a01a43debcda44782e5c4ef3dcb329caf7f9327cd812516d255c9c50219aa5fbe8e053012ca444bf3e22dbfd09b7a93a76c24b5bb78c244eb
- SSDEEP 3072:RsIPHdDL1RTR7hJngque2rLI3iVnzBj02ZBz88/g3xomwLAB2vG3ERWR3Le:LP9DL1/nruzFPdg3Cdi2eU0V6
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\biafeib
- Size 215KB
- SHA256 6a5b4784f56646fee9fa12d087eb0e680baed9b07736cbecb8aadebec628f5c8
- MD5 51fd6710d29fd3505128f71c91ab0d21
- SHA1 b0bc82beef09799708964af638b312ffb6825c7d
- SHA512 88a23c372905de0a01a43debcda44782e5c4ef3dcb329caf7f9327cd812516d255c9c50219aa5fbe8e053012ca444bf3e22dbfd09b7a93a76c24b5bb78c244eb
- SSDEEP 3072:RsIPHdDL1RTR7hJngque2rLI3iVnzBj02ZBz88/g3xomwLAB2vG3ERWR3Le:LP9DL1/nruzFPdg3Cdi2eU0V6
- MD5 SHA1 SHA512 SSDEEP