Overview

overview

10

Static

static

10

2024-06-11...ma.exe

windows7-x64

10

2024-06-11...ma.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    100s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-06-2024 14:40

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General

  • Target

    2024-06-11_efed3b0d307d291464dc3c084215502c_crysis_dharma.exe

  • Size

    92KB

  • MD5

    efed3b0d307d291464dc3c084215502c

  • SHA1

    2ba1df6f24b824b01efb74f29fabcc0bb77eb411

  • SHA256

    1a6b94477146dbbf20254a41271d27a706218fb3c4732f5288b194213e5a49e4

  • SHA512

    ee3570f4929f9cfdcd809283ed4abc7d012dad9b374e7c1841bd299f7d2e695b866203a4918ad01f47e8f60e725eaafb9a10a6b4ee3314944c180ba0e9aac1ba

  • SSDEEP

    1536:GBwl+KXpsqN5vlwWYyhZ9S4AD88drfLdfyNAUyOOa56zqhRolgT:ww+asqN5aW/hS5D9f5fy1zOa5uqhRo0

Score
10/10
dharmadefense_evasionexecutionimpactpersistenceransomwarespywarestealer

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] Write this ID in the title of your message B8E7CE18 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 (516) 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\2024-06-11_efed3b0d307d291464dc3c084215502c_crysis_dharma.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_efed3b0d307d291464dc3c084215502c_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:2308
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3116
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:2392
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:3028
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:6864
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:2668
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:5676
        • 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:7800
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:6160
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2348

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems32.dll.id-B8E7CE18.[[email protected]].ETH
            Filesize

            2.7MB

            MD5

            3bde188bbb703a043f883c33a83a1da4

            SHA1

            95d1016eb8ce0ef8d2dd1d8ce20f7533cc85bc21

            SHA256

            2dd6e229fa047dd52bedce86a5cea57a51434e5e45a73f88cf3e01235769bf2e

            SHA512

            9cc6b6ce9094649d4106d2a60e0225a567551057ca4ca92a2b62ef711c3f7bcd3d13105f80d532da454a0ba632b18e984b187660b8266a164d966f8f221bfe67

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

            13KB

            MD5

            e0dad51f9d3e7ab12b9cfd84554872b1

            SHA1

            a0663b23f776dad59c92bd644324d80060b3e2d1

            SHA256

            643ac1859e16a08e0cae30b221d0fede6e1b2dd47aaf93011fb247be3d5dcb46

            SHA512

            bc074c262e6a259f219b2152d927d1c7b657adf7ea89e593ddc0b49718249b408a0ae9781b89a1d516fba2f639d741dabb9f452d43c0e59f024cc23a0b025ab1

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