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Overview

overview

10

Static

static

10

5235da476c...af.exe

windows7-x64

10

5235da476c...af.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    173s
  • max time network
    167s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/02/2024, 17:09

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General

  • Target

    5235da476ce257081ccf375da5b9217025bfb151efd8b3522853719cac84d1af.exe

  • Size

    30KB

  • MD5

    e4c10fca8733b5e03025c3ebd265a9ae

  • SHA1

    68a5abe32d67b337b0398a39960ce2f54ea29441

  • SHA256

    5235da476ce257081ccf375da5b9217025bfb151efd8b3522853719cac84d1af

  • SHA512

    f1950d0474bba8e053996a1b7c43fac44d738ad3321f6b37dbd4c333b3b8c560625e2efe44a4f72d359fedb87973c10b487bc9b7f4572e51218989f7e07b41ac

  • SSDEEP

    768:VpuBNtX5EUX7WuP3yCwYJ1wl+o9UGgis0YE6DAeYBzxuv:gDvyoMlpdiJAe8zW

Score
9/10
evasionpersistenceransomware

Malware Config

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • Renames multiple (820) 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
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Drops desktop.ini file(s) 3 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • 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.

  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of WriteProcessMemory 12 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\5235da476ce257081ccf375da5b9217025bfb151efd8b3522853719cac84d1af.exe
    "C:\Users\Admin\AppData\Local\Temp\5235da476ce257081ccf375da5b9217025bfb151efd8b3522853719cac84d1af.exe"
    1⤵
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:4660
    • C:\Users\Admin\AppData\Local\Temp\5235da476ce257081ccf375da5b9217025bfb151efd8b3522853719cac84d1af.exe
      "C:\Users\Admin\AppData\Local\Temp\5235da476ce257081ccf375da5b9217025bfb151efd8b3522853719cac84d1af.exe" n4660
      2⤵
        PID:3672
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:456
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1988
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4780
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:4844
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:3220
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:928
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4784
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1264
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:3048
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
        • Checks SCSI registry key(s)
        PID:3688

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\$Recycle.Bin\S-1-5-21-635608581-3370340891-292606865-1000\desktop.ini
        Filesize

        356B

        MD5

        55dddb886f6f50571820cfd5a204f000

        SHA1

        b6702f07399d969fddcd1defc5dc07b5028869df

        SHA256

        9668e39f34e421a82eb94629ee42f56af66a3bee6e5aeb771773f2fdd0a0304c

        SHA512

        06ded34f3e5e7fb14c8d9c3dd4fda2d932090a11a48327f1ad1c2ab7bb0c099b494c52b662fdd57385dd5fd196596336f2ddb6b22f9e3d97b9f1056e82c61f3f

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