General

  • Target

    CelestialUUpdate.exe

  • Size

    1.2MB

  • Sample

    241205-hs6p7szkfn

  • MD5

    8b16db15e2df974f1e2d4d36934d8067

  • SHA1

    2392ba431d064fbcdf8812056a0398e28d3985ae

  • SHA256

    c9f1853eb63ea24a952a37bb0a5853be5333e94097e0ff3a60474fb022e09ae7

  • SHA512

    be01dc9ca1db5dbf6399b7568b9e063adbc617dfc686f74faf648318138c9673e09e97e6922116512d1df56cb5197fb016bfe549c21b6f022493bfcde9150f29

  • SSDEEP

    24576:2fFSkjA+SpS/h3UYU2Uq74JZXXKn4VNWF40LrBjcnbPaF/MPqoXj2:2NhfGSJUD2UqGXaHr9cn7PXC

Malware Config

Extracted

Family

xworm

Attributes
  • Install_directory

    %Temp%

  • install_file

    svchost.exe

  • pastebin_url

    https://pastebin.com/raw/vJmE27fr

  • telegram

    https://api.telegram.org/bot7414557379:AAHJMIrSP_hoR0jelLf8igel3SZxGY860qU/sendMessage?chat_id=2076906822

Extracted

Family

xworm

Version

3.0

C2

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

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

Targets

    • Target

      CelestialUUpdate.exe

    • Size

      1.2MB

    • MD5

      8b16db15e2df974f1e2d4d36934d8067

    • SHA1

      2392ba431d064fbcdf8812056a0398e28d3985ae

    • SHA256

      c9f1853eb63ea24a952a37bb0a5853be5333e94097e0ff3a60474fb022e09ae7

    • SHA512

      be01dc9ca1db5dbf6399b7568b9e063adbc617dfc686f74faf648318138c9673e09e97e6922116512d1df56cb5197fb016bfe549c21b6f022493bfcde9150f29

    • SSDEEP

      24576:2fFSkjA+SpS/h3UYU2Uq74JZXXKn4VNWF40LrBjcnbPaF/MPqoXj2:2NhfGSJUD2UqGXaHr9cn7PXC

    • 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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks