Analysis

  • max time kernel
    48s
  • max time network
    50s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    11-11-2022 14:02

General

  • Target

    fe1b479880db7637fc96d334f216e5e966879a77fac1b85d1fd892a050fbe638.exe

  • Size

    70KB

  • MD5

    760b7e6a810644e590d70673b6f5e63a

  • SHA1

    f60f8a4a666d7c3226f30dddfe69472e1a88b579

  • SHA256

    fe1b479880db7637fc96d334f216e5e966879a77fac1b85d1fd892a050fbe638

  • SHA512

    8a583dc0e81b4e67053c3175fa29ab7042dbc621cbe7181a3bbfbc7661d6faea3b8be1a1fdcd968fcc388c94394de9858ec537c479c19f9878a831a20ddffd83

  • SSDEEP

    1536:cFOPbkyoTwtPto0Rl0DsN9/zLec5oGFACZrqdKaNSEjrZKk:cYPxAwtPtoe/zLaGmCZrqcaYEjrZK

Malware Config

Extracted

Path

C:\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 4D8BC531-0001 In case of no answer in 24 hours write us to this e-mail: [email protected] If there is no response from our mail, you can install the Jabber client and write to us in support of [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 5 files for free decryption. The total size of files must be less than 10Mb (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/ Jabber client installation instructions: Download the jabber (Pidgin) client from https://pidgin.im/download/windows/ After installation, the Pidgin client will prompt you to create a new account. Click "Add" In the "Protocol" field, select XMPP In "Username" - come up with any name In the field "domain" - enter any jabber-server, there are a lot of them, for example - exploit.im Create a password At the bottom, put a tick "Create account" Click add If you selected "domain" - exploit.im, then a new window should appear in which you will need to re-enter your data: User password You will need to follow the link to the captcha (there you will see the characters that you need to enter in the field below) If you don't understand our Pidgin client installation instructions, you can find many installation tutorials on youtube - https://www.youtube.com/results?search_query=pidgin+jabber+install 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.
URLs

https://pidgin.im/download/windows/

Signatures

  • Phobos

    Phobos ransomware appeared at the beginning of 2019.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies Windows Firewall 1 TTPs 2 IoCs
  • Drops startup file 3 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 2 IoCs
  • Drops desktop.ini file(s) 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.

  • Modifies Internet Explorer settings 1 TTPs 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fe1b479880db7637fc96d334f216e5e966879a77fac1b85d1fd892a050fbe638.exe
    "C:\Users\Admin\AppData\Local\Temp\fe1b479880db7637fc96d334f216e5e966879a77fac1b85d1fd892a050fbe638.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Suspicious use of WriteProcessMemory
    PID:1244
    • C:\Users\Admin\AppData\Local\Temp\fe1b479880db7637fc96d334f216e5e966879a77fac1b85d1fd892a050fbe638.exe
      "C:\Users\Admin\AppData\Local\Temp\fe1b479880db7637fc96d334f216e5e966879a77fac1b85d1fd892a050fbe638.exe"
      2⤵
        PID:1168
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1260
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:772
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1824
        • C:\Windows\system32\netsh.exe
          netsh advfirewall set currentprofile state off
          3⤵
          • Modifies Windows Firewall
          PID:1704
        • C:\Windows\system32\netsh.exe
          netsh firewall set opmode mode=disable
          3⤵
          • Modifies Windows Firewall
          PID:1248
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\info.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:700
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\users\public\desktop\info.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:908
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\info.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:1472
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1164
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1364
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1068

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\Desktop\info.hta

      Filesize

      8KB

      MD5

      a8f11b488bfecff97baaff41f683b066

      SHA1

      823b59350fdf2f5385cf75127583b898385d16fe

      SHA256

      74c3e6c3e61713a0b05acb2de5757514b6ce84a79effc5ddbbd40668ab95d5d0

      SHA512

      fed85fcffa4f59811e4231094fe5237d033d7b9c18b152af92efbe1539ccd54637ef1f4c466c9fb472f93360a26bbb664d6ac595fc90cd18d860f1ab1af0aea0

    • C:\info.hta

      Filesize

      8KB

      MD5

      a8f11b488bfecff97baaff41f683b066

      SHA1

      823b59350fdf2f5385cf75127583b898385d16fe

      SHA256

      74c3e6c3e61713a0b05acb2de5757514b6ce84a79effc5ddbbd40668ab95d5d0

      SHA512

      fed85fcffa4f59811e4231094fe5237d033d7b9c18b152af92efbe1539ccd54637ef1f4c466c9fb472f93360a26bbb664d6ac595fc90cd18d860f1ab1af0aea0

    • C:\users\public\desktop\info.hta

      Filesize

      8KB

      MD5

      a8f11b488bfecff97baaff41f683b066

      SHA1

      823b59350fdf2f5385cf75127583b898385d16fe

      SHA256

      74c3e6c3e61713a0b05acb2de5757514b6ce84a79effc5ddbbd40668ab95d5d0

      SHA512

      fed85fcffa4f59811e4231094fe5237d033d7b9c18b152af92efbe1539ccd54637ef1f4c466c9fb472f93360a26bbb664d6ac595fc90cd18d860f1ab1af0aea0

    • memory/700-63-0x0000000000000000-mapping.dmp

    • memory/772-58-0x0000000000000000-mapping.dmp

    • memory/908-64-0x0000000000000000-mapping.dmp

    • memory/1164-66-0x0000000000000000-mapping.dmp

    • memory/1244-54-0x00000000752B1000-0x00000000752B3000-memory.dmp

      Filesize

      8KB

    • memory/1248-61-0x0000000000000000-mapping.dmp

    • memory/1260-56-0x0000000000000000-mapping.dmp

    • memory/1364-72-0x0000000000000000-mapping.dmp

    • memory/1472-65-0x0000000000000000-mapping.dmp

    • memory/1704-60-0x000007FEFB781000-0x000007FEFB783000-memory.dmp

      Filesize

      8KB

    • memory/1704-59-0x0000000000000000-mapping.dmp

    • memory/1824-57-0x0000000000000000-mapping.dmp