Overview

overview

10

Static

static

1

2023-03-23...is.exe

windows7-x64

10

2023-03-23...is.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-03-2023 04:07

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General

  • Target

    2023-03-23_21c2b2d0bfc15b3d4bc72263f9db5547_crysis.exe

  • Size

    92KB

  • MD5

    21c2b2d0bfc15b3d4bc72263f9db5547

  • SHA1

    9f65f98ae2b418425a1d98b8d86bef88edab4d7c

  • SHA256

    34c392448fc0818278cd19bb0841adf573e967be8a0f73bb42bb367a5835b6ea

  • SHA512

    aeeb64dc1130f6e5ccf6ab9abedf01e2a59e149f4897a44b02c32f816ddd1d1698a59447f7ce03dab966972f7714977b49f4b7e0fd258b0bedd936ac1926060a

  • SSDEEP

    1536:lBwl+KXpsqN5vlwWYyhY9S4AE4SLlaSXrgKcQ48bcWHpOZ2yr+e72eIGZZyb1j:vw+asqN5aW/hL6dhamQoBU4yTi17j

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 BB455488 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
  • 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
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\2023-03-23_21c2b2d0bfc15b3d4bc72263f9db5547_crysis.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-03-23_21c2b2d0bfc15b3d4bc72263f9db5547_crysis.exe"
    1⤵
    • 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:1636
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1124
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:4688
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2236
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:6352
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:6784
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:3592
        • 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:5672
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:5448
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1660

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems64.dll.id-BB455488.[[email protected]].harma
            Filesize

            3.2MB

            MD5

            76a505449e251b077129065d702f5e8f

            SHA1

            30eeb1a0bcf8b4d6b9917d8ab759f1fd32e96a56

            SHA256

            c17a2a0a89d37b5089c7bff6188aa1a892faa72f38900d82178f7f9ede1675b5

            SHA512

            32281ee995b87ba960210b9d5fce0fd3051ff282c7eecb309b6ff0a6928d96fe258c8da3fa0bdf60deecd763c800840abdf74228700df6fb6b510d0570c5b5da

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

            13KB

            MD5

            86cd2b412165e6caf71ea53cfc1b550c

            SHA1

            ca121eec1d494565f69fd3a785aad2483a3cfba1

            SHA256

            c6b4e7fe757315f7dd62e914324446b2cc105e1cd6ca7822bc15a0314144419f

            SHA512

            2a807c91a34d7f12c1c64fb9bd829a5221ea33cb17203b4f5c34064ff16842d795ec0c4c67fc88aeac5805bb42db7c5761437299f0509eccfad9c30fc785d89d

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

            13KB

            MD5

            86cd2b412165e6caf71ea53cfc1b550c

            SHA1

            ca121eec1d494565f69fd3a785aad2483a3cfba1

            SHA256

            c6b4e7fe757315f7dd62e914324446b2cc105e1cd6ca7822bc15a0314144419f

            SHA512

            2a807c91a34d7f12c1c64fb9bd829a5221ea33cb17203b4f5c34064ff16842d795ec0c4c67fc88aeac5805bb42db7c5761437299f0509eccfad9c30fc785d89d

            Download Submit