Analysis
- max time kernel
151s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
15/02/2023, 18:56
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
win10v2004-20220812-en
windows10-2004-x64
13 signatures
150 seconds
General
- Target file.exe
- Size 189KB
- Sample230215-xlcacadd79
- SHA256 667aaa2e4a9ca565872fcc10faafbfb4fe2f960d36fb862c80b2bae974bdf82a
- MD5 51c47c0e12651b695759521b302df4ce
- SHA1 91a25da0a7dc6f5998d506b8bc61d3624cc212ac
- SHA512 b77e9cbda721ed75f540ca9ec7f4ccecfc67bb0bc863bae288eee501cdfc934f9926c7977288927de8d67adf563faa599e3a47e1617ac472c5636545f048eb84
- SSDEEP 3072:uHuOccFFgIzo6tcjQVZxyV5rgLfyjfXJXwLjZxZsC+DO2/J69nW:sLcckIM6TnMCufXMT+DOc6
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 4 IoCs
resource yara_rule behavioral2/memory/1880-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/2228-135-0x00000000022A0000-0x00000000022A9000-memory.dmp family_smokeloader behavioral2/memory/1880-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1880-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Drops file in System32 directory 2 IoCs
description ioc Process File created C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{E05870FB-6F9A-4310-9942-09A810794B93}.catalogItem svchost.exe File created C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{0272EDA4-587A-4915-B42F-EAC4CA114C57}.catalogItem svchost.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2228 set thread context of 1880 2228 file.exe 75 - 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 - Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString svchost.exe - Enumerates system info in registry 2 TTPs 2 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU svchost.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1880 file.exe 1880 file.exe 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3004 Process not Found - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 1880 file.exe - Suspicious use of FindShellTrayWindow 3 IoCs
pid Process 3004 Process not Found 3004 Process not Found 3004 Process not Found - Suspicious use of SendNotifyMessage 3 IoCs
pid Process 3004 Process not Found 3004 Process not Found 3004 Process not Found - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2228 wrote to memory of 1880 2228 file.exe 75 PID 2228 wrote to memory of 1880 2228 file.exe 75 PID 2228 wrote to memory of 1880 2228 file.exe 75 PID 2228 wrote to memory of 1880 2228 file.exe 75 PID 2228 wrote to memory of 1880 2228 file.exe 75 PID 2228 wrote to memory of 1880 2228 file.exe 75
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:2228 -
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:1880
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netsvcs -p1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:4956