Overview

overview

10

Static

static

3

B698C01045...AC.exe

windows10-2004-x64

10

B698C01045...AC.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    B698C0104547E0EF0E8D8FB58BBBD3AC.exe
  • Size 32.1MB
  • Sample260817-eydptshd84
  • SHA256 4d63b437cf55d952f15ba3fb4d76a85fb7a7bb993d5065a79adb847c432e743c
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
valleyrat_s2backdoordiscoverypersistenceupx

Malware Config

Extracted

Family

  • valleyrat_s2

Version

  • 1.0

C2

  • 202.162.99.165:441

  • 127.0.0.1:80

Attributes
  • campaign_date

    2026. 8.13

Targets

    • Target
      B698C0104547E0EF0E8D8FB58BBBD3AC.exe
    • Size 32.1MB
    • SHA256 4d63b437cf55d952f15ba3fb4d76a85fb7a7bb993d5065a79adb847c432e743c
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    backdoordiscoveryvalleyrat_s2persistenceupx

    • Family: ValleyRat

      ValleyRat stage2 is a backdoor written in C++.

      backdoorvalleyrat_s2

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • Enumerates connected drives

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

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks