General

  • Target

    Server.exe

  • Size

    14.6MB

  • Sample

    241229-ykws2awner

  • MD5

    2928da00b2513f425e73f07ad2475745

  • SHA1

    17e5dc060ebabe16032c96670ca2e0f9c6026d2a

  • SHA256

    0455cb69cbb1cfa6bf808cd04587b12e5b472b1234733127cf581fc8fbeb190b

  • SHA512

    6ea489a28304f9bf8bb3ba220c25fd2c9e1ab74145381b3c1de46159598000eefa5d2a2e74b73d1dae636b77104246f51b306aa260d1a9e7b7c883257faec73e

  • SSDEEP

    393216:rK1vMyfwX52ikwhX6TCXJVJDFZHTb8lMIKw4aJ4q:G1UswX5TkwhX6sPpguw4V

Malware Config

Extracted

Family

xworm

Version

5.0

C2

147.185.221.18:13965

Mutex

kjDnGKIhO1rlIiCr

Attributes
  • Install_directory

    %Temp%

  • install_file

    svchost.exe

aes.plain

Targets

    • Target

      Server.exe

    • Size

      14.6MB

    • MD5

      2928da00b2513f425e73f07ad2475745

    • SHA1

      17e5dc060ebabe16032c96670ca2e0f9c6026d2a

    • SHA256

      0455cb69cbb1cfa6bf808cd04587b12e5b472b1234733127cf581fc8fbeb190b

    • SHA512

      6ea489a28304f9bf8bb3ba220c25fd2c9e1ab74145381b3c1de46159598000eefa5d2a2e74b73d1dae636b77104246f51b306aa260d1a9e7b7c883257faec73e

    • SSDEEP

      393216:rK1vMyfwX52ikwhX6TCXJVJDFZHTb8lMIKw4aJ4q:G1UswX5TkwhX6sPpguw4V

    • Detect Xworm Payload

    • Exela Stealer

      Exela Stealer is an open source stealer originally written in .NET and later transitioned to Python that was first observed in August 2023.

    • Exelastealer family

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Grants admin privileges

      Uses net.exe to modify the user's privileges.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Modifies Windows Firewall

    • Checks computer location settings

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

    • Clipboard Data

      Adversaries may collect data stored in the clipboard from users copying information within or between applications.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Network Service Discovery

      Attempt to gather information on host's network.

    • Enumerates processes with tasklist

    • Hide Artifacts: Hidden Files and Directories

    • UPX packed file

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

MITRE ATT&CK Enterprise v15

Tasks