General

  • Target

    34cb7fca8cb671327865d0bcf6de72bc.bin

  • Size

    11.4MB

  • Sample

    240622-ddh85svalg

  • MD5

    d8c92e1211d2e4874d4d387a62c27162

  • SHA1

    48b84ec93cb6a623be6a0b6fd197eca7adc04b44

  • SHA256

    cbac572ff3187a962ec8c1964f77af891fc5d1a54c59cb5bb68286dbc66c27af

  • SHA512

    3b9c8a417c114af01ae22422fbf1398dacbccbf7be98b7226302708e430528bb38a3797f233361758d9f18dd89a115607200bdbbaf914ddf1861a75efe10d8f4

  • SSDEEP

    196608:axM6zDC266nOq/nYv1Fxpv2QMi54Yg/LmxhZO1Wdr1BsErjQguaDouJxCa0tqMUS:ay+DC26xq/n6O3pByxhZOM1+EXQgbk2C

Malware Config

Targets

    • Target

      a6a27d9ba682a107558cdb16fcd50ebbe3d112c8dab38e96d5926c522781cc81.exe

    • Size

      11.4MB

    • MD5

      34cb7fca8cb671327865d0bcf6de72bc

    • SHA1

      f0b1cedace31b386c893530e6dce75c2ecfef083

    • SHA256

      a6a27d9ba682a107558cdb16fcd50ebbe3d112c8dab38e96d5926c522781cc81

    • SHA512

      a09a2fd355e0e7f7a7bf0c25fee3300d7e695f1871514181aef6cb7c5d9f085f6a3003cfea423ad3c79d1b463b2dd3e323c84ae6d8e352483270ee20e520d373

    • SSDEEP

      196608:gcoxkLeUoO9/jmTUkXBnG9u21tvj0brnXiT8QPLaUQrsl2az0Desq3UOF2iQsmR3:rjLQO/64kBUu2vvjU2Tr+UfIaz0DgV2P

    • DcRat

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

    • Modifies WinLogon for persistence

    • 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.

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

    • 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 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.

    • UPX packed file

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

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • 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.

    • Hide Artifacts: Hidden Files and Directories

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks