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25/03/2025, 13:12

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25/03/2025, 13:05

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16/07/2024, 08:54

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Analysis

  • max time kernel
    119s
  • max time network
    113s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20250314-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20250314-enlocale:en-usos:windows10-ltsc_2021-x64system
  • submitted
    25/03/2025, 13:05

General

  • Target

    ab5be9e6911b43f0974e01dabec772b968274d9b5ea39ba2ad7cd294056e5d09.exe

  • Size

    88KB

  • MD5

    56299609780e2286ccc2cf5857d531e8

  • SHA1

    ef7baf17905784df491641906645f00f73eff1d1

  • SHA256

    ab5be9e6911b43f0974e01dabec772b968274d9b5ea39ba2ad7cd294056e5d09

  • SHA512

    a44053d0c810448adddcd17e51682e43d51710de948644c82a141a1a8104cacedd44a274f13ea79de89f5cdfbb0e436791565baad1552d9853a5a94b446398cb

  • SSDEEP

    1536:7vie0XQsxILOW3Sm9S4AndhgXCpC1VYEzcM5BD11e0z:OeBsxInSNnhgX4CzwM

Malware Config

Extracted

Path

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta

Ransom Note
All your files have been encrypted! All your files have been encrypted due to a security problem with your PC. If you want to restore them, write us to the e-mail [email protected] You have to pay for decryption in Bitcoins. The price depends on how fast you write to us. After payment we will send you the decryption tool that will decrypt all your files. Free decryption as guarantee Before paying you can send to us up to 3 files for free decryption. Please note that files must NOT contain valuable information and their total size must be less than 10Mb. How to obtain Bitcoins The easiest way to buy bitcoins is LocalBitcoins site. You have to register, click 'Buy bitcoins', and select the seller by payment method and price. https://localbitcoins.com/buy_bitcoins Also you can find other places to buy Bitcoins and beginners guide here: http://www.coindesk.com/information/how-can-i-buy-bitcoins/ Attention! Do not rename encrypted files. Do not try to decrypt your data using third party software, it may cause permanent data loss. Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.

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 (789) 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\ab5be9e6911b43f0974e01dabec772b968274d9b5ea39ba2ad7cd294056e5d09.exe
    "C:\Users\Admin\AppData\Local\Temp\ab5be9e6911b43f0974e01dabec772b968274d9b5ea39ba2ad7cd294056e5d09.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:2232
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:712
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:5904
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2456
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:560
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:6356
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:6012
        • 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:4948
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:4448
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:4856

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems32.dll.[[email protected]].wallet

            Filesize

            2.7MB

            MD5

            09fc05cb4b6937044618715c90be6415

            SHA1

            179b0089bd07ae238ec473842da4831d163ee1a0

            SHA256

            cf9e5eb99c9d1148bd3039e7b52b2c64605e5d7f2eebc01012cf75d5523c8450

            SHA512

            446d07c4169fbb1d6bcd5736cbb2a71bcf19a1732e00a6dc281150d8ce7b937a8af4905b58dafd321666c78549b837fc9a0c9dec1035cc5ca02103f4b48245f5

          • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta

            Filesize

            13KB

            MD5

            2df5a461498e11a117a2513f22d203b6

            SHA1

            96eecf1b74ef2650be07e062eb7b2597d9c39bc2

            SHA256

            5bcef0258fa0c6a1084ad9824af8aac4ea2a55b8b3597bcd84ba31bfd0ddf551

            SHA512

            e6d8dabb38b666fb99b6409d35d7a6eab25d1802d74a8260cc1d505647d59b98f296d4b869099f96b806883cc611a12e2a9afbff65726dd7f1643d26cc1d0862