Overview

overview

10

Static

static

5

stpsu_epac.exe

windows10-2004-x64

10

stpsu_epac.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    af3175c3bf118770579ed22ea729f4cd1480a1d690e4b3f6eb3486b93d2c83c1
  • Size 227KB
  • Sample260716-pfjs8scy2p
  • SHA256 af3175c3bf118770579ed22ea729f4cd1480a1d690e4b3f6eb3486b93d2c83c1
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
valleyrat_s2backdoordefense_evasionpersistenceransomwaretrojan

Malware Config

Extracted

Family

  • valleyrat_s2

Version

  • 1.0

C2

  • 47.75.103.130:5252

  • 47.75.103.130:80

Attributes
  • campaign_date

    2026. 7.16

Targets

    • Target
      stpsu_epac.exe
    • Size 345KB
    • SHA256 506ca1e1148669f6cba4e12126d2586480bacc722c6e764cc934e18b1cf32b9a
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    backdoordefense_evasionvalleyrat_s2persistenceransomwaretrojan

    • Detects ValleyRAT payload

    • Family: ValleyRat

      ValleyRat stage2 is a backdoor written in C++.

      backdoorvalleyrat_s2

    • Windows security bypass

      defense_evasiontrojan

    • Looks for VirtualBox Guest Additions in registry

      defense_evasion

    • Looks for VMWare Tools registry key

      defense_evasion

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Windows security modification

      defense_evasiontrojan

    • 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