Overview

overview

10

Static

static

10

8d2c9a5891...61.exe

windows7-x64

9

8d2c9a5891...61.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-02-2024 17:11

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General

  • Target

    8d2c9a58915d4889b93a09df0917a774309a3976cb555a8a850530433d714661.exe

  • Size

    42KB

  • MD5

    4a542b3b4d9160019cc5a76a881f787f

  • SHA1

    87137f376a99baea1931fed024b76fc871590840

  • SHA256

    8d2c9a58915d4889b93a09df0917a774309a3976cb555a8a850530433d714661

  • SHA512

    2b20847fc0fa830c3190b9084cd43fe36cae279b0e4e06760b50e16714fbaef2a4eb9634f30acad96781266a7bba74f7190d93812e3a129a0ff04d14704e68e1

  • SSDEEP

    768:oO1oR/rVS1RzK4wbs+D/SIJX+ZZ1SQQwZuI6PzDf4rOcWNJLoYg:o5S1FKnDtkuIyjNJ8

Score
9/10
ransomware

Malware Config

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Renames multiple (3353) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Drops file in System32 directory 6 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Modifies data under HKEY_USERS 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 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 service COM API

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

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\8d2c9a58915d4889b93a09df0917a774309a3976cb555a8a850530433d714661.exe
    "C:\Users\Admin\AppData\Local\Temp\8d2c9a58915d4889b93a09df0917a774309a3976cb555a8a850530433d714661.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4656
    • C:\Users\Admin\AppData\Local\Temp\8d2c9a58915d4889b93a09df0917a774309a3976cb555a8a850530433d714661.exe
      "C:\Users\Admin\AppData\Local\Temp\8d2c9a58915d4889b93a09df0917a774309a3976cb555a8a850530433d714661.exe" n4656
      2⤵
        PID:1740
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1220
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2228
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:1228
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:3940
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4156
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2340
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:4200
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
        • Checks SCSI registry key(s)
        PID:4992
      • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
        "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
        1⤵
        • Drops file in System32 directory
        • Checks processor information in registry
        • Enumerates system info in registry
        • Modifies data under HKEY_USERS
        • Suspicious use of SetWindowsHookEx
        PID:1376

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Program Files\Common Files\DESIGNER\+README-WARNING+.txt
        Filesize

        470B

        MD5

        a4e7a9721a9ffef9f17e30de82036d5e

        SHA1

        4709a1182ebe118725e0170805ecc6a80df42667

        SHA256

        f8e189b16d13ba97744dd0c924df9e23d3d1f2020d625ba294ef0fe5ac408aef

        SHA512

        e960ec30ee81d04b6e4341c04ccc3d7aeeb1c48b4e43968cb6554788a25323b41a653678d0321a585ab5569e4eb28df098ac68e6b70b672080f1409516c23d66

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