Analysis
- max time kernel
152s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
03/12/2022, 19:07
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
win10v2004-20220812-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target file.exe
- Size 351KB
- Sample221203-xsmdwsbf8v
- SHA256 b6341c0052b0ea2a05bf000d623edadd6ad1b296e5f9d4605f57d1b98f53c32a
- MD5 eda2e0b7299d35736c59b15329b7dd7c
- SHA1 3584366c4036e5b1904d4406d45c28b59773cd5c
- SHA512 d4d7c55896fbf89d636c53ad8c354f8fb895f204d47bf8969cbd2872c845b6bc16e3fdcc66fef80ec3543ec4fa8ab0316ec69eb9f3cb294a28a13600bcfe2c4f
- SSDEEP 3072:7dyysZbayI5Am/fhR+eQXe/OVTEN/U6ZnfDPZGe6n+5GnWNTC6NRMHnlXpgNB8ON:tsday5mLsbT0ZfIFnMW2RqnHgYOeDAY
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 4 IoCs
resource yara_rule behavioral2/memory/4880-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4800-135-0x0000000000030000-0x0000000000039000-memory.dmp family_smokeloader behavioral2/memory/4880-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4880-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 1 IoCs
pid Process 4504 ssehucj - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4800 set thread context of 4880 4800 file.exe 81 - 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 4880 file.exe 4880 file.exe 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found 2640 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2640 Process not Found - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 4880 file.exe - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4800 wrote to memory of 4880 4800 file.exe 81 PID 4800 wrote to memory of 4880 4800 file.exe 81 PID 4800 wrote to memory of 4880 4800 file.exe 81 PID 4800 wrote to memory of 4880 4800 file.exe 81 PID 4800 wrote to memory of 4880 4800 file.exe 81 PID 4800 wrote to memory of 4880 4800 file.exe 81
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:4800 -
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:4880
-
-
C:\Users\Admin\AppData\Roaming\ssehucjC:\Users\Admin\AppData\Roaming\ssehucj1⤵
- Executes dropped EXE
PID:4504
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\ssehucj
- Size 351KB
- SHA256 b6341c0052b0ea2a05bf000d623edadd6ad1b296e5f9d4605f57d1b98f53c32a
- MD5 eda2e0b7299d35736c59b15329b7dd7c
- SHA1 3584366c4036e5b1904d4406d45c28b59773cd5c
- SHA512 d4d7c55896fbf89d636c53ad8c354f8fb895f204d47bf8969cbd2872c845b6bc16e3fdcc66fef80ec3543ec4fa8ab0316ec69eb9f3cb294a28a13600bcfe2c4f
- SSDEEP 3072:7dyysZbayI5Am/fhR+eQXe/OVTEN/U6ZnfDPZGe6n+5GnWNTC6NRMHnlXpgNB8ON:tsday5mLsbT0ZfIFnMW2RqnHgYOeDAY
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\ssehucj
- Size 351KB
- SHA256 b6341c0052b0ea2a05bf000d623edadd6ad1b296e5f9d4605f57d1b98f53c32a
- MD5 eda2e0b7299d35736c59b15329b7dd7c
- SHA1 3584366c4036e5b1904d4406d45c28b59773cd5c
- SHA512 d4d7c55896fbf89d636c53ad8c354f8fb895f204d47bf8969cbd2872c845b6bc16e3fdcc66fef80ec3543ec4fa8ab0316ec69eb9f3cb294a28a13600bcfe2c4f
- SSDEEP 3072:7dyysZbayI5Am/fhR+eQXe/OVTEN/U6ZnfDPZGe6n+5GnWNTC6NRMHnlXpgNB8ON:tsday5mLsbT0ZfIFnMW2RqnHgYOeDAY
- MD5 SHA1 SHA512 SSDEEP