General

  • Target

    $RVULAPD.exe

  • Size

    93KB

  • Sample

    231216-yfyf3acfhj

  • MD5

    7865912339245d7e4970eb1a27fabc2c

  • SHA1

    dd584c401e2b21296d4f3167cf070024c71f640c

  • SHA256

    bcd98496e76c128871952de7d7daa0b8930b0430d6553e77ce72508ff418bb19

  • SHA512

    1d688a0ee969695f765794b8f864078c68a4ded7ab6a081e19d5040530bef210d989df772068d9f5291ac9093ac4cc73341e0582fca0a69435f1fe3d7f33504d

  • SSDEEP

    1536:aYP0rsKtfimtQz5/Ae2G6WE0OsaTbWQw7T+fxSG6RsaSSuOLygpNw1PbVy:1P0rs4zyz54e2LF/TbWQw6xSiaSpOLyU

Malware Config

Extracted

Family

xworm

C2

tr3.localto.net:42425:52773

16.ip.gl.ply.gg:52773

Attributes
  • Install_directory

    %LocalAppData%

  • install_file

    InvidiaDriver.exe

Targets

    • Target

      $RVULAPD.exe

    • Size

      93KB

    • MD5

      7865912339245d7e4970eb1a27fabc2c

    • SHA1

      dd584c401e2b21296d4f3167cf070024c71f640c

    • SHA256

      bcd98496e76c128871952de7d7daa0b8930b0430d6553e77ce72508ff418bb19

    • SHA512

      1d688a0ee969695f765794b8f864078c68a4ded7ab6a081e19d5040530bef210d989df772068d9f5291ac9093ac4cc73341e0582fca0a69435f1fe3d7f33504d

    • SSDEEP

      1536:aYP0rsKtfimtQz5/Ae2G6WE0OsaTbWQw7T+fxSG6RsaSSuOLygpNw1PbVy:1P0rs4zyz54e2LF/TbWQw6xSiaSpOLyU

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Detect Xworm Payload

    • Modifies Windows Defender Real-time Protection settings

    • XenArmor Suite

      XenArmor is as suite of password recovery tools for various application.

    • Xworm

      Xworm is a remote access trojan written in C#.

    • ACProtect 1.3x - 1.4x DLL software

      Detects file using ACProtect software.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

2
T1112

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

4
T1552.001

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

4
T1005

Email Collection

1
T1114

Tasks