Overview

overview

10

Static

static

5

winhttp.dll

windows10-2004-x64

10

winhttp.dll

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    260819.zip
  • Size 215KB
  • Sample260819-kh6css1anh
  • SHA256 a9c1c77717765c851243c2d680badacfe8f5a2657051105f94a1cbd25a0d3124
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
valleyrat_s2adwarebackdoordefense_evasiondiscoveryexecutionpersistenceransomwarespywaretrojan

Malware Config

Extracted

Family

  • valleyrat_s2

Version

  • 1.0

C2

  • 207.56.119.83:6666

Attributes
  • campaign_date

    2026-08-16

Targets

    • Target
      winhttp.dll
    • Size 379KB
    • SHA256 e4c02c94811cd22086c1b1f1204cf8e9986474af829ab6bce4eb55038daf203b
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    adwarebackdoordefense_evasiondiscoveryexecutionvalleyrat_s2persistenceransomwarespywaretrojan

    • Detects ValleyRAT payload

    • Family: ValleyRat

      ValleyRat stage2 is a backdoor written in C++.

      backdoorvalleyrat_s2

    • Windows security bypass

      defense_evasiontrojan

    • Command and Scripting Interpreter: PowerShell

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

      execution

    • Executes dropped EXE

    • Loads dropped DLL

    • Drops desktop.ini file(s)

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks