Overview

overview

10

Static

static

5

b8979e31b0...2f.exe

windows10-2004-x64

10

b8979e31b0...2f.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    06/07/2026, 21:41

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General

  • Target
    b8979e31b0e18fd57d4e0a7512e9e0109d68312fd9a5837d62fcb11ace457c2f.exe
  • Size 5.5MB
  • Sample260706-1jrh2abz21
  • SHA256 b8979e31b0e18fd57d4e0a7512e9e0109d68312fd9a5837d62fcb11ace457c2f
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
backdoordiscoveryvalleyrat_s2persistenceransomware

Malware Config

Extracted

Family

  • valleyrat_s2

Version

  • 1.0

C2

  • 137.220.152.107:8888

  • 137.220.152.149:8888

  • 127.0.0.1:80

Attributes
  • campaign_date

    2026. 6.15

Signatures

  • Family: ValleyRat

    ValleyRat stage2 is a backdoor written in C++.

    backdoorvalleyrat_s2
  • Executes dropped EXE 7 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates connected drives 3 TTPs 22 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Enumerates processes with tasklist 1 TTPs 6 IoCs
    discovery
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\b8979e31b0e18fd57d4e0a7512e9e0109d68312fd9a5837d62fcb11ace457c2f.exe
    "C:\Users\Admin\AppData\Local\Temp\b8979e31b0e18fd57d4e0a7512e9e0109d68312fd9a5837d62fcb11ace457c2f.exe"
    1⤵
    • Enumerates connected drives
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5340
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c tasklist /fi "imagename eq 360Tray.exe" /fo csv /nh
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3516
      • C:\Windows\system32\tasklist.exe
        tasklist /fi "imagename eq 360Tray.exe" /fo csv /nh
        3⤵
        • Enumerates processes with tasklist
        • Suspicious use of AdjustPrivilegeToken
        PID:5932
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c tasklist /fi "imagename eq 360sd.exe" /fo csv /nh
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1484
      • C:\Windows\system32\tasklist.exe
        tasklist /fi "imagename eq 360sd.exe" /fo csv /nh
        3⤵
        • Enumerates processes with tasklist
        • Suspicious use of AdjustPrivilegeToken
        PID:1828
  • C:\config\SafeCenterController.exe
    C:\config\SafeCenterController.exe
    1⤵
    • Executes dropped EXE
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4432
    • C:\Windows\system32\taskmgr.exe
      taskmgr.exe
      2⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      PID:4672
  • C:\config\Windows_system_deponcom.exe
    C:\config\Windows_system_deponcom.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:6096
    • C:\config\Battle.net.exe
      "C:\config\Battle.net.exe" --from-launcher
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1300
      • C:\Windows\System32\cmd.exe
        cmd.exe /c tasklist /fi "imagename eq 360Tray.exe" /fo csv /nh
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1592
        • C:\Windows\System32\tasklist.exe
          tasklist /fi "imagename eq 360Tray.exe" /fo csv /nh
          4⤵
          • Enumerates processes with tasklist
          • Suspicious use of AdjustPrivilegeToken
          PID:828
      • C:\Windows\System32\cmd.exe
        cmd.exe /c tasklist /fi "imagename eq 360sd.exe" /fo csv /nh
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1292
        • C:\Windows\System32\tasklist.exe
          tasklist /fi "imagename eq 360sd.exe" /fo csv /nh
          4⤵
          • Enumerates processes with tasklist
          • Suspicious use of AdjustPrivilegeToken
          PID:2396
  • C:\config\Windows_system_deponcom.exe
    "C:\config\Windows_system_deponcom.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2100
    • C:\config\Battle.net.exe
      "C:\config\Battle.net.exe" --from-launcher
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1016
      • C:\Windows\SYSTEM32\cmd.exe
        cmd.exe /c tasklist /fi "imagename eq 360Tray.exe" /fo csv /nh
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:5220
        • C:\Windows\system32\tasklist.exe
          tasklist /fi "imagename eq 360Tray.exe" /fo csv /nh
          4⤵
          • Enumerates processes with tasklist
          • Suspicious use of AdjustPrivilegeToken
          PID:2196
      • C:\Windows\SYSTEM32\cmd.exe
        cmd.exe /c tasklist /fi "imagename eq 360sd.exe" /fo csv /nh
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1916
        • C:\Windows\system32\tasklist.exe
          tasklist /fi "imagename eq 360sd.exe" /fo csv /nh
          4⤵
          • Enumerates processes with tasklist
          • Suspicious use of AdjustPrivilegeToken
          PID:4740
  • C:\config\Windows_system_deponcom.exe
    "C:\config\Windows_system_deponcom.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:8
    • C:\config\Battle.net.exe
      "C:\config\Battle.net.exe" --from-launcher
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:5796

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        SecurityProviderCore.dll
        • Path C:\ProgramData\SecurityCenter\Runtime\SecurityProviderCore.dll
        • Size 319KB
        • SHA256 f5449806ad50242a4df9186455434b5957f3fc2044d85a9f1d9135a542b678cc
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        Battle.net.exe
        • Path C:\config\Battle.net.exe
        • Size 5.5MB
        • SHA256 b8979e31b0e18fd57d4e0a7512e9e0109d68312fd9a5837d62fcb11ace457c2f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        SafeCenterController.exe
        • Path C:\config\SafeCenterController.exe
        • Size 787KB
        • SHA256 cc3c6d032853fcdb5b59d8951539ec73ec276b2442825fe4756d1269beebc96b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        Windows_system_deponcom.exe
        • Path C:\config\Windows_system_deponcom.exe
        • Size 211KB
        • SHA256 a899063db35e45811a62c7abc8e63f8a2bc91253c1a875899a7bec8bff924e49
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/1016-27-0x000002155CE50000-0x000002155CEC3000-memory.dmp
        Download

        memory/1300-20-0x000001BBC1390000-0x000001BBC1403000-memory.dmp
        Download

        memory/5340-11-0x000001C43D8F0000-0x000001C43D948000-memory.dmp
        Download

        memory/5340-12-0x000001C43D8F0000-0x000001C43D948000-memory.dmp
        Download

        memory/5340-13-0x000001C43D8F0000-0x000001C43D948000-memory.dmp
        Download

        memory/5340-14-0x000001C43D8F0000-0x000001C43D948000-memory.dmp
        Download

        memory/5340-15-0x000001C43D8F0000-0x000001C43D948000-memory.dmp
        Download

        memory/5340-10-0x000001C43D8F0000-0x000001C43D948000-memory.dmp
        Download

        memory/5340-6-0x000001C43D600000-0x000001C43D673000-memory.dmp
        Download