589589cf055092ff339d001f2a39ac59d63625d1fc1d622309589ce8f0ecff73

Analysis

max time kernel
144s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
24-12-2023 23:50

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General

Target

WinLockDLL.dll
Size

774KB
MD5

6a62956f8d972bacbf8bf5548b24933c
SHA1

6a375a05e4a39d20da7d27a0b872753cac8c9bf8
SHA256

94e3dddf77fe2913f782afc87ef62bd1bbd852df7e1b4939e97878daac5c3f81
SHA512

09c96072bb3da7c78e5cae52218a95761f0be7e6561c5c5326b0f817a3c1cd8295a42c1ce593b6bf140db544f3890d0783f0fdb0f2b8bfc3506c8304967a914e
SSDEEP

12288:/EppL1elLrNXpTD0on/ULFO5U52BK+mTUR9jRnzPcbolO71mFZtzfw:/EDL1cXVxMLFOs2BK1IDRDmJ7EtzI

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

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-1-5-21-1815711207-1844170477-3539718864-1000\Software\Wine	rundll32.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2984	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2984	rundll32.exe
2984	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4976 wrote to memory of 2984	4976	rundll32.exe	20
PID 4976 wrote to memory of 2984	4976	rundll32.exe	20
PID 4976 wrote to memory of 2984	4976	rundll32.exe	20

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\WinLockDLL.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4976
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\WinLockDLL.dll,#1
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Identifies Wine through registry keys
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  PID:2984

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

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2984-0-0x0000000074A70000-0x0000000074C27000-memory.dmp

Filesize
1.7MB

Download
memory/2984-1-0x00000000023C0000-0x000000000245D000-memory.dmp

Filesize
628KB

Download
memory/2984-2-0x00000000771C4000-0x00000000771C6000-memory.dmp

Filesize
8KB

Download
memory/2984-3-0x0000000074A70000-0x0000000074C27000-memory.dmp

Filesize
1.7MB

Download