aa8d83fcd7b22fad37b1c445fe44d844e9667888cc11e081b113aa02982cb631

General

Target

aspack.dll
Size

8.0MB
MD5

7dc082e8b1d1c0bde07de2a84c9ea415
SHA1

346a806841d0d669ff168105f111d388fb5e69a4
SHA256

8f959360dd3f24ab27b4a371f53123568261bacb896a121c0660fd9d69dbddcf
SHA512

cecc5ffa67fb8540996c82860e97734884281272010ef213c06802627393e567d68aa4c410fdeb34ec7e47d1273cda1f8795cc8a2a546ddb4f8dcedfe44b8bb1

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

Themida packer 6 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/952-56-0x0000000001E50000-0x000000000497E000-memory.dmp	themida
behavioral1/memory/952-58-0x0000000001E50000-0x000000000497E000-memory.dmp	themida
behavioral1/memory/952-59-0x0000000001E50000-0x000000000497E000-memory.dmp	themida
behavioral1/memory/952-60-0x0000000001E50000-0x000000000497E000-memory.dmp	themida
behavioral1/memory/952-61-0x0000000001E50000-0x000000000497E000-memory.dmp	themida
behavioral1/memory/952-62-0x0000000001E50000-0x000000000497E000-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

952 rundll32.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1372 952 WerFault.exe rundll32.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

rundll32.exe

pid process

952 rundll32.exe

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

pid	process
952	rundll32.exe

pid	pid_target	process	target process
1372	952	WerFault.exe	rundll32.exe

pid	process
952	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1220 wrote to memory of 952	1220	rundll32.exe	rundll32.exe
PID 1220 wrote to memory of 952	1220	rundll32.exe	rundll32.exe
PID 1220 wrote to memory of 952	1220	rundll32.exe	rundll32.exe
PID 1220 wrote to memory of 952	1220	rundll32.exe	rundll32.exe
PID 1220 wrote to memory of 952	1220	rundll32.exe	rundll32.exe
PID 1220 wrote to memory of 952	1220	rundll32.exe	rundll32.exe
PID 1220 wrote to memory of 952	1220	rundll32.exe	rundll32.exe
PID 952 wrote to memory of 1372	952	rundll32.exe	WerFault.exe
PID 952 wrote to memory of 1372	952	rundll32.exe	WerFault.exe
PID 952 wrote to memory of 1372	952	rundll32.exe	WerFault.exe
PID 952 wrote to memory of 1372	952	rundll32.exe	WerFault.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\aspack.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1220

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\aspack.dll,#1
2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 952 -s 308
3⤵
- Program crash
PID:1372

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

Virtualization/Sandbox Evasion

1

T1497

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/952-54-0x0000000000000000-mapping.dmp

Download
memory/952-55-0x0000000076321000-0x0000000076323000-memory.dmp

Filesize
8KB

Download
memory/952-57-0x00000000776E0000-0x0000000077860000-memory.dmp

Filesize
1.5MB

Download
memory/952-56-0x0000000001E50000-0x000000000497E000-memory.dmp

Filesize
43.2MB

Download
memory/952-58-0x0000000001E50000-0x000000000497E000-memory.dmp

Filesize
43.2MB

Download
memory/952-59-0x0000000001E50000-0x000000000497E000-memory.dmp

Filesize
43.2MB

Download
memory/952-60-0x0000000001E50000-0x000000000497E000-memory.dmp

Filesize
43.2MB

Download
memory/952-61-0x0000000001E50000-0x000000000497E000-memory.dmp

Filesize
43.2MB

Download
memory/952-62-0x0000000001E50000-0x000000000497E000-memory.dmp

Filesize
43.2MB

Download
memory/952-64-0x00000000776E0000-0x0000000077860000-memory.dmp

Filesize
1.5MB

Download
memory/1372-63-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads