cdf5ca27a98fca17596d345e560d822438794c1d17b0120c0336104704762b8b

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-en-20211208
submitted
30-01-2022 17:05

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General

Target

cdf5ca27a98fca17596d345e560d822438794c1d17b0120c0336104704762b8b.dll
Size

3.4MB
MD5

4fbff7f0f62b26963b56c0fc23486891
SHA1

542d14138497cdcae9b9e32651361f2fd3af96ba
SHA256

cdf5ca27a98fca17596d345e560d822438794c1d17b0120c0336104704762b8b
SHA512

8c2c2896ed0a8577c9e7cddd7ef3a725772a21e34dfa05c8c10c84dc77ec792c90e458d8d4244a0a8a4a87937fc75ed3adc61562c9dca46400f5fca8093b826f

Score

9^/10

evasion themida trojan

Malware Config

Signatures

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

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

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

Themida packer 4 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/1752-55-0x000007FEF4F50000-0x000007FEF5860000-memory.dmp	themida
behavioral1/memory/1752-56-0x000007FEF4F50000-0x000007FEF5860000-memory.dmp	themida
behavioral1/memory/1752-57-0x000007FEF4F50000-0x000007FEF5860000-memory.dmp	themida
behavioral1/memory/1752-58-0x000007FEF4F50000-0x000007FEF5860000-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 AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 1752 rundll32.exe

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

description	pid	process
Token: SeDebugPrivilege	1752	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\cdf5ca27a98fca17596d345e560d822438794c1d17b0120c0336104704762b8b.dll,#1
1⤵
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of AdjustPrivilegeToken
PID:1752

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1752-55-0x000007FEF4F50000-0x000007FEF5860000-memory.dmp

Filesize
9.1MB

Download
memory/1752-56-0x000007FEF4F50000-0x000007FEF5860000-memory.dmp

Filesize
9.1MB

Download
memory/1752-57-0x000007FEF4F50000-0x000007FEF5860000-memory.dmp

Filesize
9.1MB

Download
memory/1752-58-0x000007FEF4F50000-0x000007FEF5860000-memory.dmp

Filesize
9.1MB

Download