General

  • Target

    image0.jpg

  • Size

    13KB

  • Sample

    230403-x2vfvsae3x

  • MD5

    0b8c73676c2a22c1c54faffa9c2e0423

  • SHA1

    3194911577d9082f0fe22a3e5b75121dcd67a9d1

  • SHA256

    0bff3278c664510b44adf10549afc5db50453d1df44d642bccf00a1ae60ce34f

  • SHA512

    a087ed7841e9b84b272fe51c417666412bb78ad864fd48e2c6b44e6dfd14d876d6c9fcdad9883ee7d79aef55de4b72c6e9fc00fb8d07618c6a23f949622e0a91

  • SSDEEP

    384:bqm/m9iQWGViN5UfN6fekw3tHd4z1GmmB+MHa:bvO9iQW4ijUfN8e9xuBGvm

Malware Config

Extracted

Family

metasploit

Version

metasploit_stager

C2

0.0.0.0:0

Targets

    • Target

      image0.jpg

    • Size

      13KB

    • MD5

      0b8c73676c2a22c1c54faffa9c2e0423

    • SHA1

      3194911577d9082f0fe22a3e5b75121dcd67a9d1

    • SHA256

      0bff3278c664510b44adf10549afc5db50453d1df44d642bccf00a1ae60ce34f

    • SHA512

      a087ed7841e9b84b272fe51c417666412bb78ad864fd48e2c6b44e6dfd14d876d6c9fcdad9883ee7d79aef55de4b72c6e9fc00fb8d07618c6a23f949622e0a91

    • SSDEEP

      384:bqm/m9iQWGViN5UfN6fekw3tHd4z1GmmB+MHa:bvO9iQW4ijUfN8e9xuBGvm

    • MetaSploit

      Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.

    • Modifies WinLogon for persistence

    • UAC bypass

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Downloads MZ/PE file

    • Possible privilege escalation attempt

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • Modifies system executable filetype association

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Registers COM server for autorun

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Legitimate hosting services abused for malware hosting/C2

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Change Default File Association

1
T1042

Registry Run Keys / Startup Folder

2
T1060

Bootkit

1
T1067

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Modify Registry

7
T1112

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Virtualization/Sandbox Evasion

1
T1497

File Permissions Modification

1
T1222

Discovery

Query Registry

6
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

4
T1082

Command and Control

Web Service

1
T1102

Tasks