Overview

overview

10

Static

static

3

16b583590c...f8.exe

windows10-2004-x64

8

16b583590c...f8.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    16b583590c0c4dffef4565dbb0d50c9474909c3a14e978a674db4d0ad79e8ff8
  • Size 219KB
  • Sample260804-ymhdesw1by
  • SHA256 16b583590c0c4dffef4565dbb0d50c9474909c3a14e978a674db4d0ad79e8ff8
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
valleyrat_s2backdoordiscoverypersistence

Malware Config

Extracted

Family

  • valleyrat_s2

Version

  • 1.0

C2

  • 207.56.1.119:6667

Attributes
  • campaign_date

    2026. 7. 3

Targets

    • Target
      16b583590c0c4dffef4565dbb0d50c9474909c3a14e978a674db4d0ad79e8ff8
    • Size 219KB
    • SHA256 16b583590c0c4dffef4565dbb0d50c9474909c3a14e978a674db4d0ad79e8ff8
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    backdoordiscoveryvalleyrat_s2persistence

    • Detects ValleyRAT payload

    • Family: ValleyRat

      ValleyRat stage2 is a backdoor written in C++.

      backdoorvalleyrat_s2

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Enumerates connected drives

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

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks