Overview

overview

10

Static

static

3

cb4626ad92...0b.exe

windows7-x64

10

cb4626ad92...0b.exe

windows10-2004-x64

10

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General

  • Target

    6689bd9a5c795eedc631e5fbb850b7ff.bin

  • Size

    1.4MB

  • Sample

    241212-btd81svqg1

  • MD5

    cc188238362b783c5d55497084c076fa

  • SHA1

    d15af480f1567153ef756529bae754725a1d610c

  • SHA256

    a6cea4f4b68b7f3dd83cbef2f154555cb1f351ad75c061c0650edefa25455d01

  • SHA512

    02e253c04ed4ddd8d0f4f6703068149ebab5d827d124e07066b9060ba5f517c8b81df83f854ed7a6aad17110cec44392a2ec13e54ae037c127832db93085b536

  • SSDEEP

    24576:MsEy174so8a+XbFG03/Ju5NzYwu8WmkzR2BgKyaJIEAUr/KwGpyStDJ5:Mvy174sov+LFPwuvBzRoao/KwFSB

Score
10/10
dcratexecutioninfostealerpersistencerat

Malware Config

Targets

    • Target

      cb4626ad921c63113e18c3aefb109f70c8e334089871133ea675d62d836d810b.exe

    • Size

      1.5MB

    • MD5

      6689bd9a5c795eedc631e5fbb850b7ff

    • SHA1

      b63d8e25d4eb9abea3ed0f7867f70db2ab18cba2

    • SHA256

      cb4626ad921c63113e18c3aefb109f70c8e334089871133ea675d62d836d810b

    • SHA512

      ff51ccd8918344bb0439a4d9e39394383bff2196496d778db9a3d2862479e55f1bf59c7d467ff055c721231cb592c3c7ded63c5af28a3f9552dc6421dd1151bf

    • SSDEEP

      24576:K17t7ROjwJqMAVS2hEijP79eAPkavlCCyYcBoZ11q8UuZPt5PsuWg:KBt7R0wJ4L5Uw5lCCyG31oIPmg

    Score
    10/10
    dcratexecutioninfostealerpersistencerat

    • DcRat

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

      ratinfostealerdcrat

    • Dcrat family

      dcrat

    • Modifies WinLogon for persistence

      persistence

    • Process spawned unexpected child process

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

    • Command and Scripting Interpreter: PowerShell

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

      execution

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks