Analysis
- max time kernel
152s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system - submitted
09/12/2022, 10:16
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220901-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
8 signatures
150 seconds
General
- Target file.exe
- Size 383KB
- Sample221209-massvach74
- SHA256 3ac18e59408c1df49d8647dbe491a53344f396cbf456f528a0ce6208dfc4b7ab
- MD5 0a75fc84941c7129be3d1ff4f47068e2
- SHA1 0937ddf0bad3c251efc1b2151c376688038e1ba5
- SHA512 fa60bbcd1b4b1a716c4eafe4b8bff2445b20fd2e2b8e4cb54401db8c637ece5a419fd9d6c8b71a3349dad9a69d10f7895306d90a04c4c99d55a5d68616b3283a
- SSDEEP 6144:gZOLtKXx7oZDZOGQz0qAP8hh6K9W9xxVded89kTR:gM5KX1OO/7AEIK9W9xxWaw
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 4 IoCs
resource yara_rule behavioral2/memory/4920-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/3124-135-0x00000000005E0000-0x00000000005E9000-memory.dmp family_smokeloader behavioral2/memory/4920-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4920-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3124 set thread context of 4920 3124 file.exe 80 - Checks SCSI registry key(s) 3 TTPs 3 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 - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4920 file.exe 4920 file.exe 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found 2736 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2736 Process not Found - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 4920 file.exe - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3124 wrote to memory of 4920 3124 file.exe 80 PID 3124 wrote to memory of 4920 3124 file.exe 80 PID 3124 wrote to memory of 4920 3124 file.exe 80 PID 3124 wrote to memory of 4920 3124 file.exe 80 PID 3124 wrote to memory of 4920 3124 file.exe 80 PID 3124 wrote to memory of 4920 3124 file.exe 80
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:3124 -
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:4920
-