General

  • Target

    861375605b6f4b622556d5b04f6329440a26b38dfa066b114c55d258ac4895bc.doc

  • Size

    109KB

  • Sample

    240802-cg2zzstgmb

  • MD5

    639df28efc7717655b1d8cc618a76b1c

  • SHA1

    9e79c9d82ad07f95b09e73bbba792a889911f51e

  • SHA256

    861375605b6f4b622556d5b04f6329440a26b38dfa066b114c55d258ac4895bc

  • SHA512

    62fdd2c3b2da4481c4cb380e01a37c67f7005e5024cef3b960883b227b659e056680152d2d72002a1496e293e7f97a47d3a67f8ab890b63209a00f19862a3d6c

  • SSDEEP

    1536:vkc1B8Tf5nq7gPgP8MDw/jlQx1JE7vReOr0l77CXXNaHsdUXSIt98iuB/xDC:vV2ClwH9r0l77AnsSmy/B/xDC

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

revengerat

Botnet

NyanCatRevenge

C2

marcelotatuape.ddns.net:333

Mutex

3e042ee793c84

Targets

    • Target

      861375605b6f4b622556d5b04f6329440a26b38dfa066b114c55d258ac4895bc.doc

    • Size

      109KB

    • MD5

      639df28efc7717655b1d8cc618a76b1c

    • SHA1

      9e79c9d82ad07f95b09e73bbba792a889911f51e

    • SHA256

      861375605b6f4b622556d5b04f6329440a26b38dfa066b114c55d258ac4895bc

    • SHA512

      62fdd2c3b2da4481c4cb380e01a37c67f7005e5024cef3b960883b227b659e056680152d2d72002a1496e293e7f97a47d3a67f8ab890b63209a00f19862a3d6c

    • SSDEEP

      1536:vkc1B8Tf5nq7gPgP8MDw/jlQx1JE7vReOr0l77CXXNaHsdUXSIt98iuB/xDC:vV2ClwH9r0l77AnsSmy/B/xDC

    • Process spawned unexpected child process

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

    • RevengeRAT

      Remote-access trojan with a wide range of capabilities.

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • 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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks