cbecc6a7b633f72c9edfa08e394d893f68ff73b32e60955234f920d141529701

Analysis

max time kernel
149s
max time network
123s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
21-11-2024 09:16

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General

Target

cbecc6a7b633f72c9edfa08e394d893f68ff73b32e60955234f920d141529701.dll
Size

3.6MB
MD5

e134a2ba494c8b6fd3234fbdd410a333
SHA1

56738f2fef4c090b68c4aed5fb9ab42c5ab4d63c
SHA256

cbecc6a7b633f72c9edfa08e394d893f68ff73b32e60955234f920d141529701
SHA512

2f5a7989cb37757151ecea58a43a82828be9ad35631c2029fd119c9c4cd44c7131317accdf4972dec22ff363e79097d2765e1bbd13b07a2912974ba8f8997a05
SSDEEP

98304:seHguQzSvxF+zqk2PhA/F+nsyVcCE9M2jqjhVY:vyzSfoq9PvYmcChVY

Score

9^/10

evasion themida 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

Processes:

rundll32.exe

description ioc process

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

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

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

rundll32.exe

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

Themida packer 7 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/2584-1-0x000007FEF5E50000-0x000007FEF67FC000-memory.dmp	themida
behavioral1/memory/2584-3-0x000007FEF5E50000-0x000007FEF67FC000-memory.dmp	themida
behavioral1/memory/2584-8-0x000007FEF5E50000-0x000007FEF67FC000-memory.dmp	themida
behavioral1/memory/2584-9-0x000007FEF5E50000-0x000007FEF67FC000-memory.dmp	themida
behavioral1/memory/2584-7-0x000007FEF5E50000-0x000007FEF67FC000-memory.dmp	themida
behavioral1/memory/2584-6-0x000007FEF5E50000-0x000007FEF67FC000-memory.dmp	themida
behavioral1/memory/2584-10-0x000007FEF5E50000-0x000007FEF67FC000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

rundll32.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

rundll32.exe

pid process

2584 rundll32.exe

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

pid	process
2584	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 2584 wrote to memory of 2372	2584	rundll32.exe	WerFault.exe
PID 2584 wrote to memory of 2372	2584	rundll32.exe	WerFault.exe
PID 2584 wrote to memory of 2372	2584	rundll32.exe	WerFault.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\cbecc6a7b633f72c9edfa08e394d893f68ff73b32e60955234f920d141529701.dll,#1
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 WriteProcessMemory
PID:2584
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2584 -s 176
  2⤵
  PID:2372

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2584-1-0x000007FEF5E50000-0x000007FEF67FC000-memory.dmp

Filesize
9.7MB

Download
memory/2584-3-0x000007FEF5E50000-0x000007FEF67FC000-memory.dmp

Filesize
9.7MB

Download
memory/2584-5-0x0000000077CD0000-0x0000000077CD2000-memory.dmp

Filesize
8KB

Download
memory/2584-8-0x000007FEF5E50000-0x000007FEF67FC000-memory.dmp

Filesize
9.7MB

Download
memory/2584-9-0x000007FEF5E50000-0x000007FEF67FC000-memory.dmp

Filesize
9.7MB

Download
memory/2584-7-0x000007FEF5E50000-0x000007FEF67FC000-memory.dmp

Filesize
9.7MB

Download
memory/2584-6-0x000007FEF5E50000-0x000007FEF67FC000-memory.dmp

Filesize
9.7MB

Download
memory/2584-4-0x000007FEF6800000-0x000007FEF71AC000-memory.dmp

Filesize
9.7MB

Download
memory/2584-0-0x000007FEF6800000-0x000007FEF71AC000-memory.dmp

Filesize
9.7MB

Download
memory/2584-10-0x000007FEF5E50000-0x000007FEF67FC000-memory.dmp

Filesize
9.7MB

Download