Overview

overview

10

Static

static

10

2024-01-27...ma.exe

windows7-x64

10

2024-01-27...ma.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    27-01-2024 15:36

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General

  • Target

    2024-01-27_b4f7c2438309bf856fe51dc09d96c8c0_crysis_dharma.exe

  • Size

    92KB

  • MD5

    b4f7c2438309bf856fe51dc09d96c8c0

  • SHA1

    d5e09d96add7618489b393ddabd0e242fe854e30

  • SHA256

    e3933a84ac4cbbb0a3c259c009b57c190f30c53c9be4c209eded9001cae40627

  • SHA512

    6ca8d4f0aee2c36c924f97e63afb3259e65a7adf1d1538fa55c73c3ac6a319486a8328a698280547472cfb101e33f1e23d1ece435a8159e26b2b4a5af768a035

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4Ae83iaeq1F2t2MXyIZRD0eiz:Qw+asqN5aW/hLQ8Ct2MXyIZ+ei

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 decoderma@protonmail.com Write this ID in the title of your message DC64A8A7 In case of no answer in 24 hours write us to theese e-mails: decoderma@airmail.cc 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

decoderma@protonmail.com

decoderma@airmail.cc

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
  • Renames multiple (310) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • 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
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
    adwarespyware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 28 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\2024-01-27_b4f7c2438309bf856fe51dc09d96c8c0_crysis_dharma.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-27_b4f7c2438309bf856fe51dc09d96c8c0_crysis_dharma.exe"
    1⤵
    • 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:952
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1064
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:2632
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1060
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3620
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:3580
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:3568
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
          • Modifies Internet Explorer settings
          PID:3644
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
          • Modifies Internet Explorer settings
          PID:3712
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2552

      Network

      MITRE ATT&CK Matrix ATT&CK v13

      Initial Access

      Execution

      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

      2
      T1112

      Credential Access

      Unsecured Credentials

      1
      T1552

      Credentials In Files

      1
      T1552.001

      Discovery

      System Information Discovery

      1
      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:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\ProPlusWW.msi.id-DC64A8A7.[decoderma@protonmail.com].harma
        Filesize

        2.0MB

        MD5

        161f6ce94ba57935d558341404cf1500

        SHA1

        e419141ed847de7deaaffe7b9bab52459d8f9c70

        SHA256

        1f6c107c9f1bd166774d0c71f32a24de406b1930c748c0ef80b9e38c05274e9e

        SHA512

        086fdb7f7171d20cd11d36efedcfc548724885ca2561711799db684179d39c72c7b1ed068713b2ef2fc62d586a3a359cd6375caac9322a6ce966f059808b7424

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

        13KB

        MD5

        2c38322ad98482c60fa6618af1a53dd0

        SHA1

        738d9e1ebd457f9a1aa66db157b7b1dec30120bb

        SHA256

        85fb117884750ce4f14def75933c8cb76448426df472ff1eb7f6961fbe604150

        SHA512

        1e743ea169852581f65b5a7ac0552c3ffe5532d57bb27f076c7084d03e872202e92511a71a67d0d4de3f9ef6b9ba22bb8d7358502ab2ab07f9fb344510e349eb

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