Analysis
- max time kernel
151s - max time network
143s - platform
windows10-2004_x64 - resource
win10v2004-20230221-en - resource tags
arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system - submitted
08/03/2023, 13:36
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20230220-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20230221-en
windows10-2004-x64
11 signatures
150 seconds
General
- Target file.exe
- Size 192KB
- Sample230308-qv874sfa95
- SHA256 6bac8bc88052d93f098734d3f213bfa0e5c7912a4b699dcce2a51a23a0abbcd6
- MD5 c881ac87d4991219d60d44f220c8abb8
- SHA1 7e0ea9a377ba227899faa3f2461407224fd5079f
- SHA512 b306db7a1d7740c8631727521aecf75d575f2b04f2adada3f8126519e37dbd3cc757b9e567ddc26057021402afe25969d108900b3d8c226b77ef20ee1193fc56
- SSDEEP 3072:cD8DnPm9Z17Edv1beJ47zIQPOdpAuPY2Srv9D+4W+F:nDnu9v7w1bvg8P2AvFfF
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Extracted
Family
-
smokeloader
Version
-
2020
C2
-
http://host-file-host6.com/
-
http://host-host-file8.com/
rc4.i32
rc4.i32
Signatures
- Detects Smokeloader packer 4 IoCs
resource yara_rule behavioral2/memory/3640-134-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/2156-135-0x00000000005A0000-0x00000000005A9000-memory.dmp family_smokeloader behavioral2/memory/3640-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/3640-138-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2156 set thread context of 3640 2156 file.exe 84 - 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 3640 file.exe 3640 file.exe 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found 2560 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2560 Process not Found - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 3640 file.exe - Suspicious use of AdjustPrivilegeToken 12 IoCs
description pid Process Token: SeShutdownPrivilege 2560 Process not Found Token: SeCreatePagefilePrivilege 2560 Process not Found Token: SeShutdownPrivilege 2560 Process not Found Token: SeCreatePagefilePrivilege 2560 Process not Found Token: SeShutdownPrivilege 2560 Process not Found Token: SeCreatePagefilePrivilege 2560 Process not Found Token: SeShutdownPrivilege 2560 Process not Found Token: SeCreatePagefilePrivilege 2560 Process not Found Token: SeShutdownPrivilege 2560 Process not Found Token: SeCreatePagefilePrivilege 2560 Process not Found Token: SeShutdownPrivilege 2560 Process not Found Token: SeCreatePagefilePrivilege 2560 Process not Found - Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 2560 Process not Found 2560 Process not Found - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2156 wrote to memory of 3640 2156 file.exe 84 PID 2156 wrote to memory of 3640 2156 file.exe 84 PID 2156 wrote to memory of 3640 2156 file.exe 84 PID 2156 wrote to memory of 3640 2156 file.exe 84 PID 2156 wrote to memory of 3640 2156 file.exe 84 PID 2156 wrote to memory of 3640 2156 file.exe 84 - Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
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:2156 -
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:3640
-