Overview

overview

10

Static

static

c8d9a97585...2b.exe

windows7-x64

10

c8d9a97585...2b.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    41s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    30-12-2022 05:13

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General

  • Target

    c8d9a9758516d5a8936bd3bc01a9997fb677ed1dc54081caa985883935ff092b.exe

  • Size

    56KB

  • MD5

    715bb8ece6c740ab68a9aa2f4eb0aa04

  • SHA1

    6fef9bbee0ef34c8e0bbc2510eb14c7751329577

  • SHA256

    c8d9a9758516d5a8936bd3bc01a9997fb677ed1dc54081caa985883935ff092b

  • SHA512

    2e0945f4bd9ab7b8ffc05da7ecbf18fadffd20210ac5537bb2e6b3e1f65a41f7b0e16a34772afdef20c7a9235e1487d85e21024a8da64c84bd90d59c7d37e2a2

  • SSDEEP

    1536:bNeRBl5PT/rx1mzwRMSTdLpJBRWvKIIGNOHRG47:bQRrmzwR5JTWSyIQw

Score
10/10
phobosevasionpersistenceransomwarespywarestealer

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 C31B8F3C-3398 In case of no answer in 24 hours write us to this e-mail: [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 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.

    ransomwarephobos
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

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

    Uses wbadmin.exe to inhibit system recovery.

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

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • 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.

    spywarestealer
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • 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.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\c8d9a9758516d5a8936bd3bc01a9997fb677ed1dc54081caa985883935ff092b.exe
    "C:\Users\Admin\AppData\Local\Temp\c8d9a9758516d5a8936bd3bc01a9997fb677ed1dc54081caa985883935ff092b.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:1712
    • C:\Users\Admin\AppData\Local\Temp\c8d9a9758516d5a8936bd3bc01a9997fb677ed1dc54081caa985883935ff092b.exe
      "C:\Users\Admin\AppData\Local\Temp\c8d9a9758516d5a8936bd3bc01a9997fb677ed1dc54081caa985883935ff092b.exe"
      2⤵
        PID:1860
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1776
        • C:\Windows\system32\netsh.exe
          netsh advfirewall set currentprofile state off
          3⤵
          • Modifies Windows Firewall
          PID:1872
        • C:\Windows\system32\netsh.exe
          netsh firewall set opmode mode=disable
          3⤵
          • Modifies Windows Firewall
          PID:436
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2008
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:524
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:808
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:1232
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:1812
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:1480
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\info.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:1716
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\users\public\desktop\info.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:204
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\info.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:228
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1188
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1452
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1720
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:288
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:1672
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:1736
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:456
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1880
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:1620
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
          PID:1108

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

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

          5KB

          MD5

          778bdc4907d4f7654cf0c9b4f8a7aeca

          SHA1

          fdf6f4a98c96c10a9a1476bafb2d45454dd80e7a

          SHA256

          b567a462a516057ca85f89c150c48205b50a7666f7d24c36ed8092c789a91a1d

          SHA512

          fdcbe6eb1a5e9a8ec71a7dd6c995e4b72f5d8264d43ba622725cc13875a0489625270667bed89fab56c364335f66eef19e5b05dff2fe2a7a81abf7d4fa3c18a4

          Download Submit

        • C:\info.hta
          Filesize

          5KB

          MD5

          778bdc4907d4f7654cf0c9b4f8a7aeca

          SHA1

          fdf6f4a98c96c10a9a1476bafb2d45454dd80e7a

          SHA256

          b567a462a516057ca85f89c150c48205b50a7666f7d24c36ed8092c789a91a1d

          SHA512

          fdcbe6eb1a5e9a8ec71a7dd6c995e4b72f5d8264d43ba622725cc13875a0489625270667bed89fab56c364335f66eef19e5b05dff2fe2a7a81abf7d4fa3c18a4

          Download Submit

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

          5KB

          MD5

          778bdc4907d4f7654cf0c9b4f8a7aeca

          SHA1

          fdf6f4a98c96c10a9a1476bafb2d45454dd80e7a

          SHA256

          b567a462a516057ca85f89c150c48205b50a7666f7d24c36ed8092c789a91a1d

          SHA512

          fdcbe6eb1a5e9a8ec71a7dd6c995e4b72f5d8264d43ba622725cc13875a0489625270667bed89fab56c364335f66eef19e5b05dff2fe2a7a81abf7d4fa3c18a4

          Download Submit

        • memory/204-69-0x0000000000000000-mapping.dmp

          Download

        • memory/228-70-0x0000000000000000-mapping.dmp

          Download

        • memory/288-78-0x0000000000000000-mapping.dmp

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        • memory/436-61-0x0000000000000000-mapping.dmp

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        • memory/524-58-0x0000000000000000-mapping.dmp

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        • memory/808-63-0x0000000000000000-mapping.dmp

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        • memory/1188-71-0x0000000000000000-mapping.dmp

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        • memory/1232-64-0x0000000000000000-mapping.dmp

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        • memory/1452-76-0x0000000000000000-mapping.dmp

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        • memory/1480-66-0x0000000000000000-mapping.dmp

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        • memory/1672-79-0x0000000000000000-mapping.dmp

          Download

        • memory/1712-54-0x00000000762B1000-0x00000000762B3000-memory.dmp

          Filesize

          8KB

          Download

        • memory/1716-68-0x0000000000000000-mapping.dmp

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        • memory/1720-77-0x0000000000000000-mapping.dmp

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        • memory/1736-80-0x0000000000000000-mapping.dmp

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        • memory/1776-56-0x0000000000000000-mapping.dmp

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        • memory/1812-65-0x0000000000000000-mapping.dmp

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        • memory/1872-60-0x000007FEFC161000-0x000007FEFC163000-memory.dmp

          Filesize

          8KB

          Download

        • memory/1872-59-0x0000000000000000-mapping.dmp

          Download

        • memory/2008-57-0x0000000000000000-mapping.dmp

          Download