General

  • Target

    ec50388a69792d133c1298e1dceb40a6.exe

  • Size

    2.3MB

  • Sample

    230313-lfxtbahf45

  • MD5

    ec50388a69792d133c1298e1dceb40a6

  • SHA1

    80ff3e79bc0679a0e2e91e811310e9fe59c5fcdb

  • SHA256

    bdc2f986320facc24627b6e31ae3ff0147583b04c262a386b2043557b59d06c0

  • SHA512

    fc1141659419b03040ce5bfb3b98c53f2ed53c49e285a68e341620c569f1aa6beb0cb17559e331af6f25a805ae70070a90787e26c4ee5474985c1cb52d04ab59

  • SSDEEP

    49152:PuxU6VfbIhv2/g8nn7HoqW2m86bzBvwv+P9gB8xy2LmQKV:Wi6VzIA/gg7IR8iVgB8xybQKV

Malware Config

Targets

    • Target

      ec50388a69792d133c1298e1dceb40a6.exe

    • Size

      2.3MB

    • MD5

      ec50388a69792d133c1298e1dceb40a6

    • SHA1

      80ff3e79bc0679a0e2e91e811310e9fe59c5fcdb

    • SHA256

      bdc2f986320facc24627b6e31ae3ff0147583b04c262a386b2043557b59d06c0

    • SHA512

      fc1141659419b03040ce5bfb3b98c53f2ed53c49e285a68e341620c569f1aa6beb0cb17559e331af6f25a805ae70070a90787e26c4ee5474985c1cb52d04ab59

    • SSDEEP

      49152:PuxU6VfbIhv2/g8nn7HoqW2m86bzBvwv+P9gB8xy2LmQKV:Wi6VzIA/gg7IR8iVgB8xybQKV

    • DcRat

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

    • Process spawned unexpected child process

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

    • UAC bypass

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Downloads MZ/PE file

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • 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.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Uses the VBS compiler for execution

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks whether UAC is enabled

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Looks up external IP address via web service

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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks