Analysis

  • max time kernel
    150s
  • max time network
    102s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-01-2025 00:37

General

  • Target

    2025-01-22_cca094d96399eb8905158767cb40a7c1_crysis_dharma.exe

  • Size

    92KB

  • MD5

    cca094d96399eb8905158767cb40a7c1

  • SHA1

    3f8972a4b7e6454cfcf7b2c9d76718e85465ae07

  • SHA256

    0980eab0fdf51232cf6d37d956cfd17054533db7eb95ded1292a86e32f741825

  • SHA512

    f911479b89d7cf2bd68c12627b03831026f7c1c54f98b5b53655d8e885cd1bd28ee084a2308e2faa7f86778440689d734ebbb95151b95bc307a2d9b0fd21cf83

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4AwZ5hXPCjJyCCP+g2ljJWR5IJWRY:Qw+asqN5aW/hLy5qjcCPjtJ+

Malware Config

Signatures

  • Dharma

    Dharma is a ransomware that uses security software installation to hide malicious activities.

  • Dharma family
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Renames multiple (519) files with added filename extension

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Credentials from Password Stores: Windows Credential Manager 1 TTPs

    Suspicious access to Credentials History.

  • Drops startup file 5 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 3 IoCs
  • Drops desktop.ini file(s) 64 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

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

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

  • Interacts with shadow copies 3 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 16 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\2025-01-22_cca094d96399eb8905158767cb40a7c1_crysis_dharma.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-01-22_cca094d96399eb8905158767cb40a7c1_crysis_dharma.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2888
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4812
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:904
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:4324
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1624
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:2328
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:1076
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
            PID:6560
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:6984
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1164

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems64.dll.id-E0C148C0.[[email protected]].Clone

            Filesize

            3.2MB

            MD5

            b19718b14e9ef02dcb358edf52f09645

            SHA1

            2ab8f29bfbc39e5794175666853edcd06a64b4f1

            SHA256

            777a8b38bbe3dd355f7905ffc5b996e367d07329cc14b801d6d9ea29f7e8d7f0

            SHA512

            6c333e5704d942b2d5143219656958df588c032de01d93b977fbfee8f1c25b75401136155488aa5f78c73d7cd38632f5a1e174b5ebfd7f8cd9e5809c3d6f7680

          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta

            Filesize

            1KB

            MD5

            f3bfc915df975d0c37bfda249c584f15

            SHA1

            9b0418f3effc8bf3ed994c2e53e7ced6570649ed

            SHA256

            dc1c79fabac56c1e0d89c0a4d8a8bb1ccda9923f012319b5390afbee185bcb6e

            SHA512

            d9fd2d6177be80563b2ea057e0c684b8ca53f73bd8eedf1f6fbe1f49a9a6111d9eb7754183c05d6e9b301d2fd7042752b3b805aa575aa93c0f1821e70e042d19