e9eed41b62f5c45e591f6bbf4cfd3559907451159f020ce5a29c6bbca900851b

Analysis

max time kernel
117s
max time network
122s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-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 trojan

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-1-5-21-2703099537-420551529-3771253338-1000\Software\Wine	rundll32.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	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
2404	rundll32.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\install74319.log	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
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27032FE0-CB3F-4FF5-BF04-FFCEE7E2}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D0FAC8C9-827C-F10B-BBC0-27ABC32B}	rundll32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D0FAC8C9-827C-F10B-BBC0-27ABC32B}\ProdID = 188f7d2a58e821aed0afc2da540f292d4c5a82d6	rundll32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7078E936-F25A-D838-B25D-263D7FD8}\ProdID = dfc9e301580ad62d18b40c1b588f56cdc790bffa	rundll32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7078E936-F25A-D838-B25D-263D7FD8}\ProdID = dfb9e2fd6611b0cc8e949dd862ec26aebb70da8c	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E1D4082D-79E8-22E7-A48D-932C1661}	rundll32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E1D4082D-79E8-22E7-A48D-932C1661}\ProdID = d849eb0028cb9180700db53f546d2a605c26aca1	rundll32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E1D4082D-79E8-22E7-A48D-932C1661}\ProdID = d849eb0028cb9180700db53f546d2a605c26aca1426d936f	rundll32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27032FE0-CB3F-4FF5-BF04-FFCEE7E2}\ProdID = 3415e0f7b0d3ddfe80cf3dada08ed27fac8c9336	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7078E936-F25A-D838-B25D-263D7FD8}	rundll32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D0FAC8C9-827C-F10B-BBC0-27ABC32B}\ProdID = b0907e89580d4ed518c714e95890ce3298db1a82	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2404	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 2404	1960	rundll32.exe	31
PID 1960 wrote to memory of 2404	1960	rundll32.exe	31
PID 1960 wrote to memory of 2404	1960	rundll32.exe	31
PID 1960 wrote to memory of 2404	1960	rundll32.exe	31
PID 1960 wrote to memory of 2404	1960	rundll32.exe	31
PID 1960 wrote to memory of 2404	1960	rundll32.exe	31
PID 1960 wrote to memory of 2404	1960	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\system\GameGuard.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1960
- 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
  - Checks whether UAC is enabled
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  PID:2404

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2404-0-0x0000000058800000-0x0000000058AAE000-memory.dmp

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memory/2404-1-0x0000000058800000-0x0000000058AAE000-memory.dmp

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memory/2404-2-0x0000000077A40000-0x0000000077A42000-memory.dmp

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memory/2404-3-0x0000000000200000-0x000000000020A000-memory.dmp

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memory/2404-5-0x0000000058800000-0x0000000058AAE000-memory.dmp

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memory/2404-4-0x0000000058801000-0x000000005880B000-memory.dmp

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memory/2404-6-0x0000000058800000-0x0000000058AAE000-memory.dmp

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memory/2404-7-0x0000000058800000-0x0000000058AAE000-memory.dmp

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memory/2404-9-0x0000000000770000-0x0000000000771000-memory.dmp

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