General

  • Target

    838e276f65a1dcdf9fd0292c3c7cd8b6c3f6c2ed940adcc663d68dd84a40e2c4.vbs

  • Size

    562KB

  • Sample

    240925-chgens1fpb

  • MD5

    5d0e059a9d852fbaa853170862b948f7

  • SHA1

    89c0faf4ba6531b3e9c5550f53280e02492c770d

  • SHA256

    838e276f65a1dcdf9fd0292c3c7cd8b6c3f6c2ed940adcc663d68dd84a40e2c4

  • SHA512

    9ed84239c4277d19e8ea127282cd06d941293278f90bc25a98ddda2281dce8ce17295617e55216af925db77c78457c4ea10a8f9d24e9ecdfc94aa710f40df7a4

  • SSDEEP

    1536:kmmmmmmmmmmmmmmmmmmyFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFB:4HY

Malware Config

Extracted

Language
ps1
Source
URLs
exe.dropper

https://drive.google.com/uc?export=download&id=

Extracted

Credentials

  • Protocol:
    ftp
  • Host:
    ftp.desckvbrat.com.br
  • Port:
    21
  • Username:
    desckvbrat1
  • Password:
    developerpro21578Jp@@

Extracted

Family

njrat

Version

0.7NC

Botnet

NYAN CAT

C2

notificadoresrma.duckdns.org:2054

Mutex

a388ab2ca3be4

Attributes
  • reg_key

    a388ab2ca3be4

  • splitter

    @!#&^%$

Targets

    • Target

      838e276f65a1dcdf9fd0292c3c7cd8b6c3f6c2ed940adcc663d68dd84a40e2c4.vbs

    • Size

      562KB

    • MD5

      5d0e059a9d852fbaa853170862b948f7

    • SHA1

      89c0faf4ba6531b3e9c5550f53280e02492c770d

    • SHA256

      838e276f65a1dcdf9fd0292c3c7cd8b6c3f6c2ed940adcc663d68dd84a40e2c4

    • SHA512

      9ed84239c4277d19e8ea127282cd06d941293278f90bc25a98ddda2281dce8ce17295617e55216af925db77c78457c4ea10a8f9d24e9ecdfc94aa710f40df7a4

    • SSDEEP

      1536:kmmmmmmmmmmmmmmmmmmyFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFB:4HY

    • njRAT/Bladabindi

      Widely used RAT written in .NET.

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

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

    • Checks computer location settings

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

    • Drops startup file

    • Adds Run key to start application

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Indicator Removal: File Deletion

      Adversaries may delete files left behind by the actions of their intrusion activity.

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks