Overview

overview

10

Static

static

3

2023-05-29...is.exe

windows7-x64

10

2023-05-29...is.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    30-05-2023 10:43

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General

  • Target

    2023-05-29_7821b1f09ffbf4810840b2f1b326ec77_crysis.exe

  • Size

    92KB

  • MD5

    7821b1f09ffbf4810840b2f1b326ec77

  • SHA1

    79dfb55c1413f5bd48a8783f8eabcea7981078a5

  • SHA256

    84b3135339c05c2271fff9c90d0d3845c84b4fde8defe62aa8a73d8616b24f8f

  • SHA512

    00f47a82af272923a13185a90c3247cf4fc17e04f79b06e05f2e9b54287ccf9a464c724946eb28ca351861399dc2e2154f67d3db982db3a5cb16c90087800a77

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4AvhQFlcykQLaR4zs4+a6qgHR:Qw+asqN5aW/hLJrxxdHR

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! Don't worry, you can return all your files! If you want to restore them, write to the mail: [email protected] YOUR ID [email protected] Free decryption as guarantee Before paying you can send us up to 3 files for free decryption. The total size of files must be less than 3Mb (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
  • Renames multiple (309) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • Modifies extensions of user files 2 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • 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).

  • 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 2 IoCs
    adwarespyware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 28 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\2023-05-29_7821b1f09ffbf4810840b2f1b326ec77_crysis.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-05-29_7821b1f09ffbf4810840b2f1b326ec77_crysis.exe"
    1⤵
    • Modifies extensions of user files
    • 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:1292
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1460
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:1652
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1816
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2016
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:1740
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:2700
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
          • Modifies Internet Explorer settings
          PID:2752
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
          • Modifies Internet Explorer settings
          PID:1380
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1796

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\OWOW64WW.cab.id-6A658A52.[[email protected]].xCor
        Filesize

        23.5MB

        MD5

        aada9ab400e85243de001b90973bb9eb

        SHA1

        d6db9810d483adde8f822cc05c3195c9b7100683

        SHA256

        7916903f0d61fe56fbc335ac5863b1d5b82778c88148f4883999775b94da5530

        SHA512

        81bceebcaecd4405e009a4650bc4b3eb99263ba9812f0781fda9a44971220d9ce694b0d2138d1fb2a8f1f1428bd5aa13533b570fbec81a384be45b8e19e826f6

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

        4KB

        MD5

        07fc77990f0439e14c7ff92382ffb0ec

        SHA1

        4e99ac97b48a0ac89d636c0fe4fcd436d9560a9e

        SHA256

        318baee086850b6601a93028b5dc21ba1da641b4bd7160a3655a3aecba3f6e97

        SHA512

        538f37b3dcd46e58d52c2ede7aa4f597862582b381fdb1ab30dfd9fd7dd2f9e4c9899b1207ed7043c32ffcd34cbe17b4e9130ca7725830316a38008babc4c764

        Download Submit

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

        4KB

        MD5

        07fc77990f0439e14c7ff92382ffb0ec

        SHA1

        4e99ac97b48a0ac89d636c0fe4fcd436d9560a9e

        SHA256

        318baee086850b6601a93028b5dc21ba1da641b4bd7160a3655a3aecba3f6e97

        SHA512

        538f37b3dcd46e58d52c2ede7aa4f597862582b381fdb1ab30dfd9fd7dd2f9e4c9899b1207ed7043c32ffcd34cbe17b4e9130ca7725830316a38008babc4c764

        Download Submit

      • memory/2752-20248-0x000007FFFFF80000-0x000007FFFFF90000-memory.dmp

        Filesize

        64KB

        Download