de90e611bc3f46a6a7aab948800a2558003bc850d69ebbda672379845e79cbe9

Analysis

max time kernel
125s
max time network
144s
platform
windows10_x64
resource
win10-en-20211208
submitted
30-01-2022 16:59

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General

Target

de90e611bc3f46a6a7aab948800a2558003bc850d69ebbda672379845e79cbe9.dll
Size

3.6MB
MD5

97e5c0fe8089da97665a22975e2c86de
SHA1

d5fa9362e37b31c61a778c0d05c3c3a784ec2118
SHA256

de90e611bc3f46a6a7aab948800a2558003bc850d69ebbda672379845e79cbe9
SHA512

9de1164c48acd11cbaf56c1a5d2f81efee1eb18fa6f0cea9e9a7fd2c9b61b055aa3c8347712ba1d30b3cbe9bdf20b98fb9dc55773e4c70219ac93799c42e4af1

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

Themida packer 4 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/3712-117-0x00007FFE94BF0000-0x00007FFE9555F000-memory.dmp	themida
behavioral2/memory/3712-118-0x00007FFE94BF0000-0x00007FFE9555F000-memory.dmp	themida
behavioral2/memory/3712-119-0x00007FFE94BF0000-0x00007FFE9555F000-memory.dmp	themida
behavioral2/memory/3712-120-0x00007FFE94BF0000-0x00007FFE9555F000-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 3712 rundll32.exe

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

description	pid	process
Token: SeDebugPrivilege	3712	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\de90e611bc3f46a6a7aab948800a2558003bc850d69ebbda672379845e79cbe9.dll,#1
1⤵
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of AdjustPrivilegeToken
PID:3712

Network

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

Replay Monitor

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Downloads

memory/3712-117-0x00007FFE94BF0000-0x00007FFE9555F000-memory.dmp

Filesize
9.4MB

Download
memory/3712-118-0x00007FFE94BF0000-0x00007FFE9555F000-memory.dmp

Filesize
9.4MB

Download
memory/3712-119-0x00007FFE94BF0000-0x00007FFE9555F000-memory.dmp

Filesize
9.4MB

Download
memory/3712-120-0x00007FFE94BF0000-0x00007FFE9555F000-memory.dmp

Filesize
9.4MB

Download