Overview

overview

9

Static

static

3

60c24a4c6b...JC.exe

windows7-x64

9

60c24a4c6b...JC.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    75s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/09/2023, 08:45

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General

  • Target
    60c24a4c6b54b1f4baeaee585e5e2486bbd3ab4733de36bb28da1fdb20596e21exe_JC.exe
  • Size 138KB
  • Sample230917-kn3tvsbb82
  • SHA256 60c24a4c6b54b1f4baeaee585e5e2486bbd3ab4733de36bb28da1fdb20596e21
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10
ransomwarespywarestealer

Malware Config

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Renames multiple (10001) files with added filename extension

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

    ransomware
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 2 TTPs 2 IoCs

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

    ransomware
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • 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\60c24a4c6b54b1f4baeaee585e5e2486bbd3ab4733de36bb28da1fdb20596e21exe_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\60c24a4c6b54b1f4baeaee585e5e2486bbd3ab4733de36bb28da1fdb20596e21exe_JC.exe"
    1⤵
    • Checks computer location settings
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2264
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4572
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:2032
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
        PID:268
        • C:\Windows\system32\vssadmin.exe
          vssadmin.exe delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:4576
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2296
    • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
      "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
      1⤵
        PID:4168
      • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
        "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
        1⤵
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        PID:5844

      Network

            MITRE ATT&CK Enterprise v15

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            Downloads

            FILE ENCRYPTED.txt
            • Path C:\Program Files (x86)\FILE ENCRYPTED.txt
            • Size 334B
            • SHA256 e75a145c45cb21c0fa7df0b323b80a49e9e4cf4fe3901461fe521aa52e5ea87c
            • MD5 SHA1 SHA512
            Submit Download

            StartUnifiedTileModelCache.dat
            • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\StartUnifiedTileModelCache.dat
            • Size 14KB
            • SHA256 ee8de3f39f80d939e0a8c3797053d4a332e8dfe48be067213b5bd466784bb92b
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            StartUnifiedTileModelCache.dat
            • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\StartUnifiedTileModelCache.dat
            • Size 14KB
            • SHA256 2acfecd3b43a63cc292628ef9a83da428196691d8df284be58ec64504ffaa834
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download