e9eed41b62f5c45e591f6bbf4cfd3559907451159f020ce5a29c6bbca900851b

Analysis

max time kernel
138s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19/10/2024, 04:29

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General

Target
system/GameGuard.dll
Size 1.2MB
Sample241019-e38qrszamp
SHA256 e7cf33d68392a408247cb024071509789e1b2515ce404b9bb2cb48de4ebd803c
MD5 b30735923bb181b10233ff643c16b5f0
SHA1 1d229db5ad772b9e1a5cf40d408c5f3c775fa4b9
SHA512 3cb188786a1cd0664e82a034ec0a5601e89fc67ea2e38c2240efc7f443b00d89eec54e8564e8ebe7dd8e2674651c3cbb191cd844fa71031651fd8569ec14a4b1
SSDEEP 24576:BkabgylEaIolE3rQncORIX2pkjYqVq6BbkL0pzUBi+1rI6EGrj:BL/RIYgr0wmcYqvBbkApABprzrj
MD5 SHA1 SHA512 SSDEEP

Score

9^/10

bootkit discovery evasion persistence

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	rundll32.exe

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	rundll32.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine	rundll32.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	rundll32.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1428	rundll32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies registry class 11 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\WOW6432Node\CLSID\{E1D4082D-79E8-22E7-A48D-932C1661}\ProdID = d849eb0028cb9180700db53f546d2a605c26aca1	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\WOW6432Node\CLSID\{D0FAC8C9-827C-F10B-BBC0-27ABC32B}\ProdID = d8ba9f2a58d85daed00f0bdb54ef242d0c86a4d6	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\WOW6432Node\CLSID\{7078E936-F25A-D838-B25D-263D7FD8}\ProdID = df25e3015822222e18182c1b584f48cdc7205dfa	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\WOW6432Node\CLSID\{D0FAC8C9-827C-F10B-BBC0-27ABC32B}\ProdID = f0bc5f8a582522d6981f54e958704833d8b7de82	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\WOW6432Node\CLSID\{7078E936-F25A-D838-B25D-263D7FD8}\ProdID = 1f26ddfda6a6b3caee1f61d9a27b13af3b2f258e	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\WOW6432Node\CLSID\{E1D4082D-79E8-22E7-A48D-932C1661}	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\WOW6432Node\CLSID\{E1D4082D-79E8-22E7-A48D-932C1661}\ProdID = d849eb0028cb9180700db53f546d2a605c26aca1426d936f	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\WOW6432Node\CLSID\{27032FE0-CB3F-4FF5-BF04-FFCEE7E2}	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\WOW6432Node\CLSID\{27032FE0-CB3F-4FF5-BF04-FFCEE7E2}\ProdID = 3415e0f7b0d3ddfe80cf3dada08ed27fac8c9336	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\WOW6432Node\CLSID\{D0FAC8C9-827C-F10B-BBC0-27ABC32B}	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\WOW6432Node\CLSID\{7078E936-F25A-D838-B25D-263D7FD8}	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1428	rundll32.exe
1428	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4904 wrote to memory of 1428	4904	rundll32.exe	85
PID 4904 wrote to memory of 1428	4904	rundll32.exe	85
PID 4904 wrote to memory of 1428	4904	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\system\GameGuard.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4904
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\system\GameGuard.dll,#1
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Identifies Wine through registry keys
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  PID:1428