b701a1846b7b3e6ca66948586c336f107e1a2be79b03723bbb0c1632192c15ae

Analysis

max time kernel
30s
max time network
25s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
30/12/2023, 02:58

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General

Target

0c4f76087cc6e06c0f4c10b0328cb6f9.dll
Size

3.2MB
MD5

0c4f76087cc6e06c0f4c10b0328cb6f9
SHA1

b02ccb70119d0a5dad0443c4b3e97a9ded13cef1
SHA256

b701a1846b7b3e6ca66948586c336f107e1a2be79b03723bbb0c1632192c15ae
SHA512

d0688cdaaf496a5851c1aa08b9181781dfd9b4dde9d4e4329e584a595b3038df329ab7b2de4b17ca79d54c712483a293cdc018b4fb1bf4b776566602d521a7c6
SSDEEP

98304:eclj4CA/v4GbUHSrVsmpGM1JILgIFLiXKa:eclj4CA/pYSBGM7ArM6a

Score

9^/10

evasion

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

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Wine	rundll32.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1772	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1772	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 1772	2376	rundll32.exe	28
PID 2376 wrote to memory of 1772	2376	rundll32.exe	28
PID 2376 wrote to memory of 1772	2376	rundll32.exe	28
PID 2376 wrote to memory of 1772	2376	rundll32.exe	28
PID 2376 wrote to memory of 1772	2376	rundll32.exe	28
PID 2376 wrote to memory of 1772	2376	rundll32.exe	28
PID 2376 wrote to memory of 1772	2376	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0c4f76087cc6e06c0f4c10b0328cb6f9.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2376
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\0c4f76087cc6e06c0f4c10b0328cb6f9.dll,#1
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Identifies Wine through registry keys
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  PID:1772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

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Downloads

memory/1772-0-0x0000000074AF0000-0x0000000075426000-memory.dmp

Filesize
9.2MB

Download
memory/1772-1-0x0000000074AF0000-0x0000000075426000-memory.dmp

Filesize
9.2MB

Download
memory/1772-2-0x00000000739A0000-0x00000000742D6000-memory.dmp

Filesize
9.2MB

Download
memory/1772-3-0x00000000739A0000-0x00000000742D6000-memory.dmp

Filesize
9.2MB

Download
memory/1772-4-0x0000000077E30000-0x0000000077E32000-memory.dmp

Filesize
8KB

Download