Overview

overview

10

Static

static

1

2023-02-03...is.exe

windows7-x64

10

2023-02-03...is.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-02-2023 11:24

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General

  • Target

    2023-02-03_b88f005719f4f25f113f749464a28a17_crysis.exe

  • Size

    92KB

  • MD5

    b88f005719f4f25f113f749464a28a17

  • SHA1

    65b517db35d9f63146077002836c37602026c642

  • SHA256

    92390d8b7dd99a4b03af59b45763c706d5df368761ce9706236e3dac4f9a74e2

  • SHA512

    8b7224e235f4293f25d6e992b76db7a50d59585f3ebcaabeb9f9784e84a564ed3bd6969a7747c42273ab436ceadf53ecff4ef273a3faf79202836aec39273fd7

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4Az+bB1WEZ+/MXi9Rq1P985Ff2QlQpSzUkl:Qw+asqN5aW/hL1+t9Z+/MXi9QP985F0k

Score
10/10
dharmapersistenceransomwarespywarestealer

Malware Config

Extracted

Path

C:\ProgramData\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 883C94B1 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.

    ransomwaredharma
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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.

    spywarestealer
  • Adds Run key to start application 2 TTPs 3 IoCs
    persistence
  • 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). Likely ransomware behaviour.

  • Interacts with shadow copies 2 TTPs 2 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2023-02-03_b88f005719f4f25f113f749464a28a17_crysis.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-02-03_b88f005719f4f25f113f749464a28a17_crysis.exe"
    1⤵
    • Modifies extensions of user files
    • Checks computer location settings
    • 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:3468
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4916
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:528
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:4340
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4324
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:3292
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:4372
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
            PID:4872
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:4708
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:448

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta
            Filesize

            13KB

            MD5

            bc316bf7585f6437f6f86801d0609d2d

            SHA1

            0a1f32186d3e8c75b9a57cc504207959c8b8315a

            SHA256

            1a589642fc0626e7227747e72522b9cabd4e2acfaed3a6ffe9a2ec9795298611

            SHA512

            48491e6b53984cc104f5a74be996652f93e41b76ec6b0403e3337a71d8ff9216969e929c4acd248f4e1ff142111cb99a8ce6293bc45bef05a9b1707adf9edad7

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

            13KB

            MD5

            bc316bf7585f6437f6f86801d0609d2d

            SHA1

            0a1f32186d3e8c75b9a57cc504207959c8b8315a

            SHA256

            1a589642fc0626e7227747e72522b9cabd4e2acfaed3a6ffe9a2ec9795298611

            SHA512

            48491e6b53984cc104f5a74be996652f93e41b76ec6b0403e3337a71d8ff9216969e929c4acd248f4e1ff142111cb99a8ce6293bc45bef05a9b1707adf9edad7

            Download Submit

          • memory/528-133-0x0000000000000000-mapping.dmp

            Download

          • memory/3292-136-0x0000000000000000-mapping.dmp

            Download

          • memory/4324-135-0x0000000000000000-mapping.dmp

            Download

          • memory/4340-134-0x0000000000000000-mapping.dmp

            Download

          • memory/4372-137-0x0000000000000000-mapping.dmp

            Download

          • memory/4708-139-0x0000000000000000-mapping.dmp

            Download

          • memory/4872-138-0x0000000000000000-mapping.dmp

            Download

          • memory/4916-132-0x0000000000000000-mapping.dmp

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