Analysis

  • max time kernel
    1800s
  • max time network
    1559s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    20-07-2024 14:23

General

  • Target

    farty poo poo ransomware.exe

  • Size

    218KB

  • MD5

    9b20e48b731d1a78ffce07e1b4dfb7c0

  • SHA1

    031e4932fc6da1cabde7735280b09b897719ba29

  • SHA256

    f4b60e17e83f037c811ee111e21964cd772a817186324987fe5033420233ec43

  • SHA512

    e59ecaf97a277aa46af7f027a5f9806b2c42a8b9555eb2db1475c25bccc50fb46621727ee2ba98590da3c2cff424557e0dd0803551a6dc8a399470cae5b56b8c

  • SSDEEP

    3072:knUdM17tCgrmcEwBnJWJ9IHfYCeNpD/cgjj9w7BT0cfWjE39mbo:kl9tCMmFGJWgHfYpDkgjeJWjuIb

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Roaming\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 3F60CAD0 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.

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Renames multiple (319) files with added filename extension

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

  • 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.

  • Adds Run key to start application 2 TTPs 3 IoCs
  • 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 3 TTPs 2 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\farty poo poo ransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\farty poo poo ransomware.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:2152
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2752
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:2800
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2552
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2128
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:4852
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:4880
        • 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:1044
        • 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:2420
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2620

      Network

      MITRE ATT&CK Matrix ATT&CK v13

      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

      2
      T1112

      Direct Volume Access

      1
      T1006

      Credential Access

      Unsecured Credentials

      1
      T1552

      Credentials In Files

      1
      T1552.001

      Discovery

      System Information Discovery

      1
      T1082

      Collection

      Data from Local System

      1
      T1005

      Impact

      Inhibit System Recovery

      2
      T1490

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\osetup.dll.id-3F60CAD0.[[email protected]].bot
        Filesize

        6.3MB

        MD5

        772255f9dd93002dba0057ee54e24f50

        SHA1

        82b42c5b4c603ed3d38625cb669cd697235034b3

        SHA256

        d2f924b27142a68ee49877c9d69c70b3dbe2a8a08a707fe91d25d4bc569f7370

        SHA512

        81ed6c8de17d07a35596214a82c9402f740cc27d6098c22f6f2d31793be613120b551be4e95848a5f7e00c71e9fd3a16c05a7f650cd4ed21dc29d92eaa21ce2c

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

        13KB

        MD5

        fafbc9ba20cd58e3a6a42d1679bddb98

        SHA1

        dd8715bf4bf961f3b253342c596aa3259879b983

        SHA256

        e43f49ad91586cfc213d455269cab608fb8e48bf54d2639038a634240d1088c6

        SHA512

        3dd32dd222796dccb0709cd26768e8422763d5531c86332d7b83b4c7f5bcea267ac6ac7f38639252f85d6ea4f950ba4215d5b989937ff09131aff20a58a72ffe

      • memory/2152-1-0x0000000004F10000-0x0000000005010000-memory.dmp
        Filesize

        1024KB

      • memory/2152-3-0x0000000000400000-0x0000000000419000-memory.dmp
        Filesize

        100KB

      • memory/2152-2-0x00000000002A0000-0x00000000002B9000-memory.dmp
        Filesize

        100KB

      • memory/2152-13026-0x0000000000400000-0x0000000004E92000-memory.dmp
        Filesize

        74.6MB

      • memory/2152-20345-0x0000000004F10000-0x0000000005010000-memory.dmp
        Filesize

        1024KB

      • memory/2152-20346-0x0000000000400000-0x0000000000419000-memory.dmp
        Filesize

        100KB

      • memory/2420-20342-0x000007FFFFF80000-0x000007FFFFF90000-memory.dmp
        Filesize

        64KB