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
    146s
  • 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 02:57

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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:\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 F9191391 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
  • 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⤵
    • 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:672
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4628
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:2312
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:3488
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:824
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:2356
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:6112
        • 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:6232
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:5160
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1904

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe.id-F9191391.[[email protected]].bip
            Filesize

            2.9MB

            MD5

            5e695a7de460d4f28465918c13e2a67c

            SHA1

            7dcf6f9be0a0c80f03eeee8efa749168d8cb9ab5

            SHA256

            a0e4ffdd7b543da54c8ccab72b90306be387161b7b08c689d4883455578786c5

            SHA512

            5bc5c3e30c8098e6260d90fa530379e957f9dd4f8b945b795f9bd63c6cd197742e284cc94174eaf3cddffee6b0aaa8456364c961229d799fa4559acd4ed1977b

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

            13KB

            MD5

            ac7a035c870025f738f8eef9fa951274

            SHA1

            94a0bdeed303883069f496b0f5d6c0e51e251564

            SHA256

            6c030f2e0d951d8a9bcab1df3e32f062d81518ca4ca6d6b0ceebf347ee7efeb6

            SHA512

            c5b69622e086d6c58b4133952c05ab05de3dabb44b08ee1c3cf223910474d43a81183e10ff375ee1d9629540b38c77015cb184aebd629f0c78d97b2490d81dc3

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

            13KB

            MD5

            ac7a035c870025f738f8eef9fa951274

            SHA1

            94a0bdeed303883069f496b0f5d6c0e51e251564

            SHA256

            6c030f2e0d951d8a9bcab1df3e32f062d81518ca4ca6d6b0ceebf347ee7efeb6

            SHA512

            c5b69622e086d6c58b4133952c05ab05de3dabb44b08ee1c3cf223910474d43a81183e10ff375ee1d9629540b38c77015cb184aebd629f0c78d97b2490d81dc3

            Download Submit