Analysis
- max time kernel
16s - max time network
17s - platform
windows7_x64 - resource
win7-20240221-en - resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system - submitted
22/04/2024, 12:14
Behavioral task
behavioral1
Sample
loader.exe
Resource
win10-20240404-en
8 signatures
150 seconds
General
- Target loader.exe
- Size 4.1MB
- Sample240422-pesprabc6w
- SHA256 60c57f14c2e0e0df0bda16646b21dddceaee0159dafbbb8daba310d4e1b5be6c
- MD5 9ecdc9ed1bea6c226f92d740d43400b9
- SHA1 b5b5066cd4284733d8c3f3d7de3ca6653091ae10
- SHA512 30bc705a2438288e3647d5adfc6119d751823970972b9c6b39a60384a2b7ac261986026b8d1c0b0ca7ee3d7e95363c97b873fdc5fad4096c903cb4e15bf57e43
- SSDEEP 98304:vnUGAC+hqc8lqvdzw2nsNKYYURyc9JirsN4JzmUPj:PTn2qcUzp6UYeJRCxPj
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ loader.exe - Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion loader.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion loader.exe -
resource yara_rule behavioral2/memory/2292-0-0x000000013FE90000-0x000000014092F000-memory.dmp themida behavioral2/memory/2292-2-0x000000013FE90000-0x000000014092F000-memory.dmp themida behavioral2/memory/2292-3-0x000000013FE90000-0x000000014092F000-memory.dmp themida behavioral2/memory/2292-4-0x000000013FE90000-0x000000014092F000-memory.dmp themida behavioral2/memory/2292-5-0x000000013FE90000-0x000000014092F000-memory.dmp themida behavioral2/memory/2292-6-0x000000013FE90000-0x000000014092F000-memory.dmp themida behavioral2/memory/2292-7-0x000000013FE90000-0x000000014092F000-memory.dmp themida behavioral2/memory/2292-8-0x000000013FE90000-0x000000014092F000-memory.dmp themida behavioral2/memory/2292-17-0x000000013FE90000-0x000000014092F000-memory.dmp themida -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA loader.exe - Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 2292 loader.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2292 loader.exe - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2292 wrote to memory of 2676 2292 loader.exe 28 PID 2292 wrote to memory of 2676 2292 loader.exe 28 PID 2292 wrote to memory of 2676 2292 loader.exe 28 PID 2676 wrote to memory of 2516 2676 cmd.exe 30 PID 2676 wrote to memory of 2516 2676 cmd.exe 30 PID 2676 wrote to memory of 2516 2676 cmd.exe 30 PID 2676 wrote to memory of 1196 2676 cmd.exe 31 PID 2676 wrote to memory of 1196 2676 cmd.exe 31 PID 2676 wrote to memory of 1196 2676 cmd.exe 31 PID 2676 wrote to memory of 2704 2676 cmd.exe 32 PID 2676 wrote to memory of 2704 2676 cmd.exe 32 PID 2676 wrote to memory of 2704 2676 cmd.exe 32
Processes
-
C:\Users\Admin\AppData\Local\Temp\loader.exe"C:\Users\Admin\AppData\Local\Temp\loader.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2292 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\loader.exe" MD5 | find /i /v "md5" | find /i /v "certutil"2⤵
- Suspicious use of WriteProcessMemory
PID:2676 -
C:\Windows\system32\certutil.execertutil -hashfile "C:\Users\Admin\AppData\Local\Temp\loader.exe" MD53⤵PID:2516
-
-
C:\Windows\system32\find.exefind /i /v "md5"3⤵PID:1196
-
-
C:\Windows\system32\find.exefind /i /v "certutil"3⤵PID:2704
-
-