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General

  • Target

    2891a1770d5724146e5c2b436b990f66.exe

  • Size

    2.3MB

  • Sample

    250215-t6pjmatmgk

  • MD5

    2891a1770d5724146e5c2b436b990f66

  • SHA1

    db1a33568f79cb33363b19ef174491a16832fff4

  • SHA256

    4c04379fe5ff8e88b7cfd025d5eeb3e5f82a69fd100e16154f726a39c065c829

  • SHA512

    9a83deeee92ef2f03ff9b003ed64cedf1c44326cee1d3ef5ee019eaef63ce3af709c46bf551b73a0a81860ccb8daf5e6fc98755014c91bf8146131ffe350691e

  • SSDEEP

    24576:2TbBv5rUyXVkW04UlpbayL/VxDqddNa9HGqDK0q8xGUxTW3TUFJcGqfc6Nl9WnXQ:IBJkz6SxGUBWZNfRl9WnXE5

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot7672483956:AAEbI1b7GIIxrQbShd0HlTs0p2B6ioRIrjI/sendPhot

Targets

    • Target

      2891a1770d5724146e5c2b436b990f66.exe

    • Size

      2.3MB

    • MD5

      2891a1770d5724146e5c2b436b990f66

    • SHA1

      db1a33568f79cb33363b19ef174491a16832fff4

    • SHA256

      4c04379fe5ff8e88b7cfd025d5eeb3e5f82a69fd100e16154f726a39c065c829

    • SHA512

      9a83deeee92ef2f03ff9b003ed64cedf1c44326cee1d3ef5ee019eaef63ce3af709c46bf551b73a0a81860ccb8daf5e6fc98755014c91bf8146131ffe350691e

    • SSDEEP

      24576:2TbBv5rUyXVkW04UlpbayL/VxDqddNa9HGqDK0q8xGUxTW3TUFJcGqfc6Nl9WnXQ:IBJkz6SxGUBWZNfRl9WnXE5

    • DcRat

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

    • Dcrat family

    • Gurcu family

    • Gurcu, WhiteSnake

      Gurcu aka WhiteSnake is a malware stealer written in C#.

    • Modifies WinLogon for persistence

    • Process spawned unexpected child process

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

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • 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