General

  • Target

    CrackLauncher.exe

  • Size

    81KB

  • Sample

    241206-jjkbaaspfm

  • MD5

    f068a2f351d11284fee8d768a64f6c9c

  • SHA1

    6fcba43b6b6024c8795d699f638444654714c276

  • SHA256

    4854a1611616f474d7241dc0268f913f92887a383a81e2dba1186c358cf93f22

  • SHA512

    856c01cfbde2b8a41564a77f07b5561d69679da6a0af8da86d6dc869309d04cabac0a06c37560456e8bf6dfa0f04e342b57f2afbcb5ddbf4d0bbe06944387ff2

  • SSDEEP

    1536:NfFb0NWmGRk7di8n/7IbDqS8a1gMGT6tVOUVprKsZ:NBrk7dHIbDMMJVOUVpdZ

Malware Config

Extracted

Family

xworm

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    svchost.exe

  • pastebin_url

    https://pastebin.com/raw/vJmE27fr

Extracted

Family

xworm

Version

3.0

C2

plus-loves.gl.at.ply.gg:59327

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

Targets

    • Target

      CrackLauncher.exe

    • Size

      81KB

    • MD5

      f068a2f351d11284fee8d768a64f6c9c

    • SHA1

      6fcba43b6b6024c8795d699f638444654714c276

    • SHA256

      4854a1611616f474d7241dc0268f913f92887a383a81e2dba1186c358cf93f22

    • SHA512

      856c01cfbde2b8a41564a77f07b5561d69679da6a0af8da86d6dc869309d04cabac0a06c37560456e8bf6dfa0f04e342b57f2afbcb5ddbf4d0bbe06944387ff2

    • SSDEEP

      1536:NfFb0NWmGRk7di8n/7IbDqS8a1gMGT6tVOUVprKsZ:NBrk7dHIbDMMJVOUVpdZ

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Dcrat family

    • Detect Xworm Payload

    • Modifies WinLogon for persistence

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Command and Scripting Interpreter: PowerShell

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

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • 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.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks