Analysis

  • max time kernel
    151s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    27-12-2022 15:17

General

  • Target

    231bba5652f6fbdbab3016362fb7925fc4e4489fff5e6a4a98c37fba5bd0cfe9.exe

  • Size

    55KB

  • MD5

    b2f083ee365141030c49ddffc325f6be

  • SHA1

    f1091be7e566d068403a87b0e7ed4b959c952c8e

  • SHA256

    231bba5652f6fbdbab3016362fb7925fc4e4489fff5e6a4a98c37fba5bd0cfe9

  • SHA512

    09ce81f0bbbcc42444b177857de062ba09213a30d0d1171dd8902cab2592b1773b3a6090e017d4b68f6d9782f25f69d524f7fb84798a7e5e4f576aaa05c71430

  • SSDEEP

    768:xvrNNeRBl5JFTXqwXrkgrn/9/HiDKGwRj4RcTdyH4pYT3nPKVU1ERnqfD19l3C6J:LNeRBl5PT/rx1mzwRMSTdLpJRyvx

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 4DF0FBF9-3427 In case of no answer in 24 hours write us to this e-mail: < 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 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 4Mb (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

  • Phobos

    Phobos ransomware appeared at the beginning of 2019.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies boot configuration data using bcdedit 1 TTPs 4 IoCs
  • Deletes backup catalog 3 TTPs 2 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Modifies Windows Firewall 1 TTPs 2 IoCs
  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

  • 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
  • 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.

  • Modifies Internet Explorer settings 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 60 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\231bba5652f6fbdbab3016362fb7925fc4e4489fff5e6a4a98c37fba5bd0cfe9.exe
    "C:\Users\Admin\AppData\Local\Temp\231bba5652f6fbdbab3016362fb7925fc4e4489fff5e6a4a98c37fba5bd0cfe9.exe"
    1⤵
    • Modifies extensions of user files
    • Drops startup file
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1408
    • C:\Users\Admin\AppData\Local\Temp\231bba5652f6fbdbab3016362fb7925fc4e4489fff5e6a4a98c37fba5bd0cfe9.exe
      "C:\Users\Admin\AppData\Local\Temp\231bba5652f6fbdbab3016362fb7925fc4e4489fff5e6a4a98c37fba5bd0cfe9.exe"
      2⤵
        PID:824
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:984
        • C:\Windows\system32\netsh.exe
          netsh advfirewall set currentprofile state off
          3⤵
          • Modifies Windows Firewall
          PID:1784
        • C:\Windows\system32\netsh.exe
          netsh firewall set opmode mode=disable
          3⤵
          • Modifies Windows Firewall
          PID:516
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1944
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1588
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1672
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:1744
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:1660
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:1504
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\info.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:652
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\users\public\desktop\info.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:1260
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\info.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:224
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:812
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1828
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1156
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:940
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:1616
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:1340
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1772
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:844
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:1616
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
          PID:1736

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\Desktop\info.hta

          Filesize

          5KB

          MD5

          e110fb1f2fdff8b7e72522b61d8c8a79

          SHA1

          6af3e670ef32550edfe475f9b08b16de3d2bd95e

          SHA256

          f7b0171e051914bf13444e913e0693f4c13316b3b7a3abb20925d5071bf0c3bf

          SHA512

          1eb69390dd90e0c02ecc57ae04f1c20276db6e90ce80025945ab6937cef6bddab569cb6e144ece9b6e2301895fe836e5c98421707855e1d14ecc114fa5dbf14d

        • C:\info.hta

          Filesize

          5KB

          MD5

          e110fb1f2fdff8b7e72522b61d8c8a79

          SHA1

          6af3e670ef32550edfe475f9b08b16de3d2bd95e

          SHA256

          f7b0171e051914bf13444e913e0693f4c13316b3b7a3abb20925d5071bf0c3bf

          SHA512

          1eb69390dd90e0c02ecc57ae04f1c20276db6e90ce80025945ab6937cef6bddab569cb6e144ece9b6e2301895fe836e5c98421707855e1d14ecc114fa5dbf14d

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

          Filesize

          5KB

          MD5

          e110fb1f2fdff8b7e72522b61d8c8a79

          SHA1

          6af3e670ef32550edfe475f9b08b16de3d2bd95e

          SHA256

          f7b0171e051914bf13444e913e0693f4c13316b3b7a3abb20925d5071bf0c3bf

          SHA512

          1eb69390dd90e0c02ecc57ae04f1c20276db6e90ce80025945ab6937cef6bddab569cb6e144ece9b6e2301895fe836e5c98421707855e1d14ecc114fa5dbf14d

        • memory/224-70-0x0000000000000000-mapping.dmp

        • memory/516-61-0x0000000000000000-mapping.dmp

        • memory/652-68-0x0000000000000000-mapping.dmp

        • memory/812-71-0x0000000000000000-mapping.dmp

        • memory/940-79-0x0000000000000000-mapping.dmp

        • memory/984-56-0x0000000000000000-mapping.dmp

        • memory/1156-78-0x0000000000000000-mapping.dmp

        • memory/1260-69-0x0000000000000000-mapping.dmp

        • memory/1340-81-0x0000000000000000-mapping.dmp

        • memory/1408-54-0x00000000750A1000-0x00000000750A3000-memory.dmp

          Filesize

          8KB

        • memory/1504-66-0x0000000000000000-mapping.dmp

        • memory/1588-58-0x0000000000000000-mapping.dmp

        • memory/1616-80-0x0000000000000000-mapping.dmp

        • memory/1660-65-0x0000000000000000-mapping.dmp

        • memory/1672-63-0x0000000000000000-mapping.dmp

        • memory/1744-64-0x0000000000000000-mapping.dmp

        • memory/1784-60-0x000007FEFB8B1000-0x000007FEFB8B3000-memory.dmp

          Filesize

          8KB

        • memory/1784-59-0x0000000000000000-mapping.dmp

        • memory/1828-77-0x0000000000000000-mapping.dmp

        • memory/1944-57-0x0000000000000000-mapping.dmp