Overview

overview

10

Static

static

10

b6c644a164...ae.exe

windows7-x64

10

b6c644a164...ae.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    02-04-2024 12:17

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General

  • Target

    b6c644a1644dd9b81a604fb6ad6a8cebf4a9b14d5c41da633a93ba2f459f31ae.exe

  • Size

    92KB

  • MD5

    ff9af6e3beebc9df0146f515f68e004e

  • SHA1

    f57248526065852ecb491e871160cf1cb23ae22f

  • SHA256

    b6c644a1644dd9b81a604fb6ad6a8cebf4a9b14d5c41da633a93ba2f459f31ae

  • SHA512

    49bcad9e25613bcb90dcc851a4759cd6e79afc39bd21f32bebe82aebad61b01ad49359527ca2450bdc05331f2c461ad443f976bc52122419e2a9dde9080c7fb5

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4AqXeiKozyHj0vThU2BHYZsX3AZMgLzw4g:Qw+asqN5aW/hLMXeHoYQbhvYZD84

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 boston.crypt@tuta.io Write this ID in the title of your message 05167D95 In case of no answer in 24 hours write us to theese e-mails: boston.crypt@tuta.io 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

boston.crypt@tuta.io

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 (316) 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\b6c644a1644dd9b81a604fb6ad6a8cebf4a9b14d5c41da633a93ba2f459f31ae.exe
    "C:\Users\Admin\AppData\Local\Temp\b6c644a1644dd9b81a604fb6ad6a8cebf4a9b14d5c41da633a93ba2f459f31ae.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:2948
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2832
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:2292
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1868
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2368
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:676
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:1464
        • 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:1888
        • 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:2880
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1812

      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\ProPsWW.cab.id-05167D95.[boston.crypt@tuta.io].boost
        Filesize

        143.1MB

        MD5

        4bda18f32f80ae518fa4cab55fb1a96a

        SHA1

        673133ba7a7e57e91a077e5f6b03feb976b762f9

        SHA256

        772ae972bfd1fa04ba2a510df14ee9ad7780f9436f782069f96ae7487aaebc05

        SHA512

        729b00a5ca07b75e4d9a00f97d549d4ee9568e1ce9d3f26d69f5d5f432971d16a6161ec8aa362f047f979efcfbec9d01565444a277cc96fc93b2c9e71f16971f

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

        13KB

        MD5

        e8d08a2b71c6a95d3c4dcb21669108c7

        SHA1

        d2b80df41139d3eb091f27752b05e107f94392db

        SHA256

        0a70067976073140365184ac2aab1e7155d33e371177d19e4b214e41b8961dde

        SHA512

        db253405400b449680bd345c525a9e783b75fdc8c852ad487ba03a163b804159d8e7d051d4d8be1aaee824d340184230546c310454ee7c4a99dae5d3e4c7d0a9

        Download Submit
      • memory/1888-20043-0x000007FFFFF80000-0x000007FFFFF90000-memory.dmp
        Filesize

        64KB

        Download