General

  • Target

    a61ecbd90edbc5cc26ed5bc4ab6064ed7ae966cbf517674458d1823746df2bfd

  • Size

    19.4MB

  • Sample

    240519-c9g6aaee4x

  • MD5

    5eb9fd6252a47041f94daa9bb8bb7f8f

  • SHA1

    f373d4d9011fb66ee729b3a0c52155aff12dd1e4

  • SHA256

    a61ecbd90edbc5cc26ed5bc4ab6064ed7ae966cbf517674458d1823746df2bfd

  • SHA512

    caf70f3391e5cf2d14a41ab54e0bacc7467f5bf1c9acd4907bc1a7a189298c2d5aa38b0cd5a6298371b9c1cb01d7902f140d7917f3896fd2c27780c3034a6820

  • SSDEEP

    393216:b2nPPTBq8TeGnUvaeRNwm6+aQ7HjsG/i6hZPV6gWVd74dQ+2yXUX9STE0B2Xqpf:U7Bs/Nj6+njsH6/M52Q+2a+9SnwXGf

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1221847080373584144/7stbODqa-C2IH_V1s7-AaD6fECqR68YLov_s341xewFGvFGlgl7fRFcAsV3CtRNlSgzQ

Extracted

Family

xworm

C2

127.0.0.1:30683

operating-niger.gl.at.ply.gg:30683:30683

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

Targets

    • Target

      aec009724ba208376f91cbfafd60db1e965f9016f17f14bfb3b074dde1f6ae28.exe

    • Size

      19.8MB

    • MD5

      3969991942bb5b6130977411ae258ab8

    • SHA1

      c391e670488d73dc79c2acfab1e845d9c3e5227e

    • SHA256

      aec009724ba208376f91cbfafd60db1e965f9016f17f14bfb3b074dde1f6ae28

    • SHA512

      ce009d113cd85629cb744c0e30fecc9cb1f3bc353b546eab676604a3eec976c5f0dc60cb29b7f4841bb71bb7596128340d1b222408c9aeeb9f9671d1a1add00a

    • SSDEEP

      393216:O581WtclJGQ9GnlC58mn3yJQjNKlgtcTuOYTmWYlY5nGPEy+tj7NJX:OeWgdGnlCqm3vKCTmpY5Py+r

    • DcRat

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

    • Detect Umbral payload

    • Detect Xworm Payload

    • Process spawned unexpected child process

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

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

    • Xworm

      Xworm is a remote access trojan written in C#.

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

    • Command and Scripting Interpreter: PowerShell

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

    • Drops file in Drivers directory

    • Checks computer location settings

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

    • 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.

    • 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.

MITRE ATT&CK Enterprise v15

Tasks