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
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    30-12-2022 10:32

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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:\Users\Admin\Desktop\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 3959F7F2-3398 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 2 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:1540
    • C:\Users\Admin\AppData\Local\Temp\c8d9a9758516d5a8936bd3bc01a9997fb677ed1dc54081caa985883935ff092b.exe
      "C:\Users\Admin\AppData\Local\Temp\c8d9a9758516d5a8936bd3bc01a9997fb677ed1dc54081caa985883935ff092b.exe"
      2⤵
        PID:944
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:520
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1820
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1576
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:1580
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:1976
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:2000
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:336
        • C:\Windows\system32\netsh.exe
          netsh advfirewall set currentprofile state off
          3⤵
          • Modifies Windows Firewall
          PID:1600
        • C:\Windows\system32\netsh.exe
          netsh firewall set opmode mode=disable
          3⤵
          • Modifies Windows Firewall
          PID:1640
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\info.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:1744
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\users\public\desktop\info.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:216
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\info.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:1552
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1036
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1336
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1576
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:1168
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:1712
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:1996
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:112
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1308
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:1920
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
          PID:744

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

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

          5KB

          MD5

          09f67632b774cc0e779b5d92ca00450a

          SHA1

          65970de2fbbae3ff7bd3371fd65400d28aa5ce8d

          SHA256

          2df5d24b51071d3eddf7523da6b2acf4097b9bd647026e070403c1af9ac37984

          SHA512

          21114ca2e0514317d29ee9432a9b993f70f27b2113eec7ae675ae9c229de1c8a62800b10ff61aaf99ad4be4bfdc795e57cabaff36f094119bd270fb2f6d5c757

          Download Submit

        • C:\info.hta
          Filesize

          5KB

          MD5

          09f67632b774cc0e779b5d92ca00450a

          SHA1

          65970de2fbbae3ff7bd3371fd65400d28aa5ce8d

          SHA256

          2df5d24b51071d3eddf7523da6b2acf4097b9bd647026e070403c1af9ac37984

          SHA512

          21114ca2e0514317d29ee9432a9b993f70f27b2113eec7ae675ae9c229de1c8a62800b10ff61aaf99ad4be4bfdc795e57cabaff36f094119bd270fb2f6d5c757

          Download Submit

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

          5KB

          MD5

          09f67632b774cc0e779b5d92ca00450a

          SHA1

          65970de2fbbae3ff7bd3371fd65400d28aa5ce8d

          SHA256

          2df5d24b51071d3eddf7523da6b2acf4097b9bd647026e070403c1af9ac37984

          SHA512

          21114ca2e0514317d29ee9432a9b993f70f27b2113eec7ae675ae9c229de1c8a62800b10ff61aaf99ad4be4bfdc795e57cabaff36f094119bd270fb2f6d5c757

          Download Submit

        • memory/216-69-0x0000000000000000-mapping.dmp

          Download

        • memory/336-57-0x0000000000000000-mapping.dmp

          Download

        • memory/520-56-0x0000000000000000-mapping.dmp

          Download

        • memory/1036-74-0x0000000000000000-mapping.dmp

          Download

        • memory/1168-79-0x0000000000000000-mapping.dmp

          Download

        • memory/1336-77-0x0000000000000000-mapping.dmp

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        • memory/1540-54-0x0000000075931000-0x0000000075933000-memory.dmp

          Filesize

          8KB

          Download

        • memory/1552-70-0x0000000000000000-mapping.dmp

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        • memory/1576-63-0x0000000000000000-mapping.dmp

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        • memory/1576-78-0x0000000000000000-mapping.dmp

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        • memory/1580-64-0x0000000000000000-mapping.dmp

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        • memory/1600-60-0x000007FEFC091000-0x000007FEFC093000-memory.dmp

          Filesize

          8KB

          Download

        • memory/1600-59-0x0000000000000000-mapping.dmp

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        • memory/1640-61-0x0000000000000000-mapping.dmp

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        • memory/1712-80-0x0000000000000000-mapping.dmp

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        • memory/1744-68-0x0000000000000000-mapping.dmp

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        • memory/1820-58-0x0000000000000000-mapping.dmp

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        • memory/1976-65-0x0000000000000000-mapping.dmp

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        • memory/1996-81-0x0000000000000000-mapping.dmp

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        • memory/2000-66-0x0000000000000000-mapping.dmp

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