Overview

overview

10

Static

static

1

2023-04-15...is.exe

windows7-x64

10

2023-04-15...is.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-04-2023 04:02

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General

  • Target

    2023-04-15_f0d51246d6655e30178634fee2792710_crysis.exe

  • Size

    92KB

  • MD5

    f0d51246d6655e30178634fee2792710

  • SHA1

    9757d10f4b4d2d18a996ca18507a0450654caf53

  • SHA256

    40a68110241e86f1cdece1dc5a6dfb72e028b40e8d55447cc3a961341b932784

  • SHA512

    fc1ee9cf97e720c0e522715b42432c195cd9471db4b5266c0cf4b4346b26e3e2355d2317f1701d5d09981e4ac28ab2413015efce7d4a71d6958ae2b529b8509d

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4AkToiOJqIi16U14dJzpTdh7Y2+ZBy55sL:Qw+asqN5aW/hLlBxRU14T5duO5E

Score
10/10
dharmapersistenceransomwarespywarestealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Roaming\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 F7B581DB 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\2023-04-15_f0d51246d6655e30178634fee2792710_crysis.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-04-15_f0d51246d6655e30178634fee2792710_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:4916
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3252
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:3568
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2688
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4536
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:3636
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:4932
        • 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:3956
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:2376
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2496

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe.id-F7B581DB.[[email protected]].bip
            Filesize

            2.9MB

            MD5

            4ed63f9085eb6476fc4486d5579bfe20

            SHA1

            6da2fe1b337c58762c28aab0d353a484dfe6eb01

            SHA256

            c726b92e0a6845de78779e5dc633da26431e20235f2a888294c15716565cdb8f

            SHA512

            2270794a01d312eb9440f7cde69739c51d7eb4de5883c6c02334c617a79c505f9ed9ca99920f8d85481af78019c1b9bc799c02754673cfe0c0808a4d55158d38

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

            13KB

            MD5

            d0fb29709217bf1db2d295970f41c892

            SHA1

            da0bed21ddd84d31bc5ecb55a2ffaac85306bba3

            SHA256

            1dc7d0dae5a20339bee0c2081c13ffade5e6d6ece37d474295cdea52659f27d8

            SHA512

            02d666de4b042987b4611891a866c00e48b34faac15c2e738055d71c1b6a54118c191ff66fbf0ddc4fa278f0dde3513dd0862d34ea334ae85b59d443fca10606

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

            13KB

            MD5

            d0fb29709217bf1db2d295970f41c892

            SHA1

            da0bed21ddd84d31bc5ecb55a2ffaac85306bba3

            SHA256

            1dc7d0dae5a20339bee0c2081c13ffade5e6d6ece37d474295cdea52659f27d8

            SHA512

            02d666de4b042987b4611891a866c00e48b34faac15c2e738055d71c1b6a54118c191ff66fbf0ddc4fa278f0dde3513dd0862d34ea334ae85b59d443fca10606

            Download Submit