63c5aa3e26fdc571f328f9c8a5e2c518b6f0611110270eb4b224ee99dfe0c416

Analysis

max time kernel
38s
max time network
43s
platform
windows7_x64
resource
win7-20220715-en
resource tags

arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system
submitted
18/07/2022, 15:24

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
gcpfqzsczq.dll
Size 6.8MB
Sample220718-ss2flahbfp
SHA256 fbe44a3401b91f4fa23f2df40e6844931bfc1e8931fefcf301b786788b44a6f4
MD5 cb0e540176159268be4986459091576a
SHA1 c512c14e8a2afb15636e7b4c6f30284646b8d456
SHA512 a04fc5b10b46bd2cec4ce3ec48b29ca87e3137a3f5e2d3575d18a6282c98a6c9e9e7c9316494fbeb1a4e30ce24842d41c074c3d4c3c122e0378f8259b25a4b1a
MD5 SHA1 SHA512

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

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

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

resource	yara_rule
behavioral1/memory/1048-57-0x0000000001EC0000-0x0000000002FB7000-memory.dmp	themida
behavioral1/memory/1048-58-0x0000000001EC0000-0x0000000002FB7000-memory.dmp	themida
behavioral1/memory/1048-59-0x0000000001EC0000-0x0000000002FB7000-memory.dmp	themida
behavioral1/memory/1048-60-0x0000000001EC0000-0x0000000002FB7000-memory.dmp	themida
behavioral1/memory/1048-61-0x0000000001EC0000-0x0000000002FB7000-memory.dmp	themida
behavioral1/memory/1048-62-0x0000000001EC0000-0x0000000002FB7000-memory.dmp	themida
behavioral1/memory/1048-63-0x0000000001EC0000-0x0000000002FB7000-memory.dmp	themida
behavioral1/memory/1048-64-0x0000000001EC0000-0x0000000002FB7000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

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

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1048	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
872	1048	WerFault.exe	27

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 944 wrote to memory of 1048	944	rundll32.exe	27
PID 944 wrote to memory of 1048	944	rundll32.exe	27
PID 944 wrote to memory of 1048	944	rundll32.exe	27
PID 944 wrote to memory of 1048	944	rundll32.exe	27
PID 944 wrote to memory of 1048	944	rundll32.exe	27
PID 944 wrote to memory of 1048	944	rundll32.exe	27
PID 944 wrote to memory of 1048	944	rundll32.exe	27
PID 1048 wrote to memory of 872	1048	rundll32.exe	28
PID 1048 wrote to memory of 872	1048	rundll32.exe	28
PID 1048 wrote to memory of 872	1048	rundll32.exe	28
PID 1048 wrote to memory of 872	1048	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\gcpfqzsczq.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:944
- 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
  - Suspicious use of WriteProcessMemory
  PID:1048
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1048 -s 316
    3⤵
    - Program crash
    PID:872

Network

MITRE ATT&CK Enterprise v6

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

Loading Replay Monitor...

Downloads

memory/1048-60-0x0000000001EC0000-0x0000000002FB7000-memory.dmp

Download

memory/1048-56-0x00000000774F0000-0x0000000077670000-memory.dmp

Download

memory/1048-57-0x0000000001EC0000-0x0000000002FB7000-memory.dmp

Download

memory/1048-58-0x0000000001EC0000-0x0000000002FB7000-memory.dmp

Download

memory/1048-59-0x0000000001EC0000-0x0000000002FB7000-memory.dmp

Download

memory/1048-61-0x0000000001EC0000-0x0000000002FB7000-memory.dmp

Download

memory/1048-62-0x0000000001EC0000-0x0000000002FB7000-memory.dmp

Download

memory/1048-63-0x0000000001EC0000-0x0000000002FB7000-memory.dmp

Download

memory/1048-64-0x0000000001EC0000-0x0000000002FB7000-memory.dmp

Download

memory/1048-55-0x0000000075241000-0x0000000075243000-memory.dmp

Download

memory/1048-66-0x00000000774F0000-0x0000000077670000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads