Overview

overview

10

Static

static

10

2024-06-12...ma.exe

windows7-x64

10

2024-06-12...ma.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    52s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/06/2024, 19:52

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General

  • Target

    2024-06-12_ecb9ce512c87d71d88144ad64f5abfd8_crysis_dharma.exe

  • Size

    92KB

  • MD5

    ecb9ce512c87d71d88144ad64f5abfd8

  • SHA1

    0cde37bd2c0aaa35b59bf910e5dbc9cf60f9e44c

  • SHA256

    f8f68990fd52ffe979ab4b7fb95658c7e914c8d2f0bc4b71c23193bdfdd984e8

  • SHA512

    6119ff932ef73de20215a4fad54f146ce20e63e51df0df2f874cb0646d17d1c2c157f9e453dbf310d3de05ffbe7a27515d87980016daed655e0bcc58745454d0

  • SSDEEP

    1536:GBwl+KXpsqN5vlwWYyhZ9S4AlBQbr5bYH+J4jS0B:ww+asqN5aW/hSVQv5+B

Score
10/10
dharmadefense_evasionexecutionimpactpersistenceransomwarespywarestealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Roaming\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] Write this ID in the title of your message 9BD90E0D In case of no answer in 24 hours write us to theese e-mails: [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 us up to 1 file for free decryption. The total size of files must be less than 1Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.) 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.

    ransomwaredharma
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Renames multiple (512) 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.

  • Drops startup file 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Adds Run key to start application 2 TTPs 3 IoCs
    persistence
  • Drops desktop.ini file(s) 64 IoCs
  • Drops file in System32 directory 2 IoCs
  • 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
  • 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.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-12_ecb9ce512c87d71d88144ad64f5abfd8_crysis_dharma.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-12_ecb9ce512c87d71d88144ad64f5abfd8_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
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3380
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3440
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:6368
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:5220
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3124
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:5864
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:7692
        • 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:7804
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:7696
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:7024

          Network

          MITRE ATT&CK Enterprise v15

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          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems64.dll.id-9BD90E0D.[[email protected]].bot
            Filesize

            3.2MB

            MD5

            00544d16ca1509d0544cb9220741d464

            SHA1

            186a918a4da48c03a1f74d0974e732b769c29c6a

            SHA256

            17f99d732c770b40c035666f329fc1a36e2e013f6b8b230acd2aa7c40c400eb0

            SHA512

            1408453642c2d8e0b8b32229a6ffaa7a5cba32f26d7852779e190b16fbec3313dc6619752c5f656221cac0d957c08c0ebd1e6acbe20552b7c53a129892e37e00

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

            13KB

            MD5

            f095906720f174a8dafcfffa5a28a701

            SHA1

            757527d25e4c92e3fbeb871072cbbb1872b83a2e

            SHA256

            933d05ec6eb4f7ff28ef4fa17e0197d7f55bd8b8b3ab17db46b804b26b848171

            SHA512

            fbbe227866276ffa76af912ff93104ffca2ad115be525c5d6c3ee01ead03af679e35640eb023700c7a22a92af617a56962127fd43393cd9be4e1058ce776bca8

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