Overview

overview

10

Static

static

10

2024-06-13...ma.exe

windows7-x64

10

2024-06-13...ma.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-06-2024 00:42

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General

  • Target

    2024-06-13_815b4bf1a7372c76db0809d6122b57df_crysis_dharma.exe

  • Size

    92KB

  • MD5

    815b4bf1a7372c76db0809d6122b57df

  • SHA1

    f0ec3d7dcd44d35f0d4ddffe9e2c74e9492b0ff7

  • SHA256

    2cf4826c59b3a6d17814d869a7f39ba6584789aada655f49fb67165d6efcc3bc

  • SHA512

    f382dc91cc91ef18a30cdda961af440cfd98740fa2378c5a3e292ada26d2c9a9ec1d16a1b8c20c7b010ea7a408a652612c7133514d76c9fb57517b0b807e5ed0

  • SSDEEP

    1536:GBwl+KXpsqN5vlwWYyhZ9S4Av2DAQHPPyHn2OzT3R46F7pcwwTXO:ww+asqN5aW/hSov+Xl7l

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! Don't worry, you can return all your files! If you want to restore them, write to the mail: [email protected] YOUR ID [email protected] Free decryption as guarantee Before paying you can send us up to 3 files for free decryption. The total size of files must be less than 3Mb (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 (664) 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\2024-06-13_815b4bf1a7372c76db0809d6122b57df_crysis_dharma.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-13_815b4bf1a7372c76db0809d6122b57df_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:5092
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1164
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:3664
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:5840
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:9000
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:3204
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:2612
        • 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:5068
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:6928
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:6724

          Network

          MITRE ATT&CK Matrix ATT&CK v13

          Initial Access

          Execution

          Windows Management Instrumentation

          1
          T1047

          Persistence

          Boot or Logon Autostart Execution

          1
          T1547

          Registry Run Keys / Startup Folder

          1
          T1547.001

          Privilege Escalation

          Boot or Logon Autostart Execution

          1
          T1547

          Registry Run Keys / Startup Folder

          1
          T1547.001

          Defense Evasion

          Indicator Removal

          2
          T1070

          File Deletion

          2
          T1070.004

          Modify Registry

          1
          T1112

          Credential Access

          Unsecured Credentials

          1
          T1552

          Credentials In Files

          1
          T1552.001

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          2
          T1082

          Lateral Movement

          Collection

          Data from Local System

          1
          T1005

          Exfiltration

          Command and Control

          Impact

          Inhibit System Recovery

          2
          T1490

          Resource Development

          Reconnaissance

          Replay Monitor

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          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\C2R32.dll.id-AFA9A448.[[email protected]].AeR
            Filesize

            2.7MB

            MD5

            2f8aff31a5ca7b5314ea530c8340e3a5

            SHA1

            8d1cc2c352aa8acf21096efe29bb9d428a865d8f

            SHA256

            34b58c56b961f84508c5ef5e0406187e507279439cd8378320efb35d257bed41

            SHA512

            dc048461565dc6008006e02c64668c49eae2a4494048521fd3452f9ac02c50fb953e6f93cc62cbf7d2856f88dafb5dda6dc3380f059cf9b13a0baa51c4a61242

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

            4KB

            MD5

            f67d7c3fa13f42d5cd385bc659c5ba8b

            SHA1

            0b3640f804717192fa671f5b9798fd96840972db

            SHA256

            f07203daa970cae398ca2274eda203317e023b01d09e1786e01af67c6d8f5f35

            SHA512

            f5be7e5d5d0d91970b1076e2c2126d91372b8742911e024ff08b91d30f0a3fa34ac3ac64115b4fdf31d742acdc6d11eb0dd7e0bf8d6165a04ba9c590eeba58ba

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