fbe44a3401b91f4fa23f2df40e6844931bfc1e8931fefcf301b786788b44a6f4

General

Target

gcpfqzsczq.dll
Size

6.8MB
MD5

cb0e540176159268be4986459091576a
SHA1

c512c14e8a2afb15636e7b4c6f30284646b8d456
SHA256

fbe44a3401b91f4fa23f2df40e6844931bfc1e8931fefcf301b786788b44a6f4
SHA512

a04fc5b10b46bd2cec4ce3ec48b29ca87e3137a3f5e2d3575d18a6282c98a6c9e9e7c9316494fbeb1a4e30ce24842d41c074c3d4c3c122e0378f8259b25a4b1a

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 8 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/4076-132-0x0000000002430000-0x0000000003527000-memory.dmp	themida
behavioral2/memory/4076-133-0x0000000002430000-0x0000000003527000-memory.dmp	themida
behavioral2/memory/4076-134-0x0000000002430000-0x0000000003527000-memory.dmp	themida
behavioral2/memory/4076-135-0x0000000002430000-0x0000000003527000-memory.dmp	themida
behavioral2/memory/4076-136-0x0000000002430000-0x0000000003527000-memory.dmp	themida
behavioral2/memory/4076-137-0x0000000002430000-0x0000000003527000-memory.dmp	themida
behavioral2/memory/4076-138-0x0000000002430000-0x0000000003527000-memory.dmp	themida
behavioral2/memory/4076-139-0x0000000002430000-0x0000000003527000-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

4076 rundll32.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4008 4076 WerFault.exe rundll32.exe

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

pid	process
4076	rundll32.exe

pid	pid_target	process	target process
4008	4076	WerFault.exe	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 2804 wrote to memory of 4076	2804	rundll32.exe	rundll32.exe
PID 2804 wrote to memory of 4076	2804	rundll32.exe	rundll32.exe
PID 2804 wrote to memory of 4076	2804	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\gcpfqzsczq.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2804

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\gcpfqzsczq.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
PID:4076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 752
3⤵
- Program crash
PID:4008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4076 -ip 4076
1⤵
PID:3328

Network

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/4076-130-0x0000000000000000-mapping.dmp

Download
memory/4076-131-0x0000000077990000-0x0000000077B33000-memory.dmp

Filesize
1.6MB

Download
memory/4076-132-0x0000000002430000-0x0000000003527000-memory.dmp

Filesize
17.0MB

Download
memory/4076-133-0x0000000002430000-0x0000000003527000-memory.dmp

Filesize
17.0MB

Download
memory/4076-134-0x0000000002430000-0x0000000003527000-memory.dmp

Filesize
17.0MB

Download
memory/4076-135-0x0000000002430000-0x0000000003527000-memory.dmp

Filesize
17.0MB

Download
memory/4076-136-0x0000000002430000-0x0000000003527000-memory.dmp

Filesize
17.0MB

Download
memory/4076-137-0x0000000002430000-0x0000000003527000-memory.dmp

Filesize
17.0MB

Download
memory/4076-138-0x0000000002430000-0x0000000003527000-memory.dmp

Filesize
17.0MB

Download
memory/4076-139-0x0000000002430000-0x0000000003527000-memory.dmp

Filesize
17.0MB

Download
memory/4076-140-0x0000000077990000-0x0000000077B33000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads