Overview

overview

10

Static

static

1

dharma_unp...in.exe

windows7-x64

10

dharma_unp...in.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-03-2023 04:44

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General

  • Target

    dharma_unpacked.bin.exe

  • Size

    92KB

  • MD5

    6ed029b9794717d305103e9eb20a8d1f

  • SHA1

    956ebe054b5f286a1584b365dde59c130dd494ee

  • SHA256

    a43dab9c34af5a49a2a615e86db3e2bf4c5467853dd5bd4f1a1c73619b683ab2

  • SHA512

    dc080d7d7e6e69e1068212ac39e2feb19c5293d52340e9beccf897253a7281032bd4656a8fa5c4f028eed4930487fb8e7029cdd414287a119bc7f6bfbcf0c22c

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4AOYNq9Siz/+XVgaypvbjaFJt7:Qw+asqN5aW/hLFNq9EWvajt7

Score
10/10
dharmapersistenceransomwarespywarestealer

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 syndicateXXX@aol.com Write this ID in the title of your message F123741F In case of no answer in 24 hours write us to theese e-mails: syndicateXXX@aol.com 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.
Emails

syndicateXXX@aol.com

Signatures

  • Dharma

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

    ransomwaredharma
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies extensions of user files 2 IoCs

    Ransomware generally changes the extension on encrypted files.

    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). Likely ransomware behaviour.

  • 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\dharma_unpacked.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\dharma_unpacked.bin.exe"
    1⤵
    • Modifies extensions of user files
    • 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:1252
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3148
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:4300
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:3144
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:5800
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:5308
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:5892
        • 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:5368
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:6356
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:4760

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Initial Access

          Execution

          Persistence

          Registry Run Keys / Startup Folder

          1
          T1060

          Privilege Escalation

          Defense Evasion

          File Deletion

          2
          T1107

          Modify Registry

          1
          T1112

          Credential Access

          Credentials in Files

          1
          T1081

          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

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe.id-F123741F.[syndicateXXX@aol.com].xxxxx
            Filesize

            2.9MB

            MD5

            e81fa258cb87f0466e88b36e6716c526

            SHA1

            ed0f8393859b0af77c97633e7b6b4241287ad6ef

            SHA256

            3381f13a0c1069dc8309271c6459d0e580fa3e84eda4fa84c380b73a53193968

            SHA512

            ffbdc00c800e72038adf4409ee4de9c6b0443a63b0e92de88d4233125644a8f04c5e8b137afe87973f4b7e0d04efd9424deb9b096c71e173a1f26d0cb574d65f

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

            13KB

            MD5

            53eed32ff2eb72e32073e1b9b02cc436

            SHA1

            0e689b8eb9df906167b267a625f166f851574134

            SHA256

            7d7a3653aa0e5c8fb9b34bee839d97e88dd35c0fb47a5385523cf16febd878ee

            SHA512

            0709cfcb5c23dc905ec39f85b2daa8819000f69f1e66df269e9b4dec3aa8db6d003d81708e003d553af5be2666914c8395e118fbd430ad7203aed128c8b75e50

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

            13KB

            MD5

            53eed32ff2eb72e32073e1b9b02cc436

            SHA1

            0e689b8eb9df906167b267a625f166f851574134

            SHA256

            7d7a3653aa0e5c8fb9b34bee839d97e88dd35c0fb47a5385523cf16febd878ee

            SHA512

            0709cfcb5c23dc905ec39f85b2daa8819000f69f1e66df269e9b4dec3aa8db6d003d81708e003d553af5be2666914c8395e118fbd430ad7203aed128c8b75e50

            Download Submit