Overview

overview

10

Static

static

1

2023-02-21...is.exe

windows7-x64

10

2023-02-21...is.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    32s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    21-02-2023 20:30

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General

  • Target

    2023-02-21_3797a1dd86bf2e8879d02cfc7c9fa601_crysis.exe

  • Size

    92KB

  • MD5

    3797a1dd86bf2e8879d02cfc7c9fa601

  • SHA1

    3df9dc4e19b52e449708bcddc3939ce662b69674

  • SHA256

    bd210c5759b815a64b7166aceae471ef622bccdde3b46fc971aa78bcb73f08f1

  • SHA512

    2970ffaca52a5776187120edb2cb8e6556ee8e052a4efe79c2d7d91a3e83c28a892266b271bfc22c1a9ab043ea9749bf76715453bdbe14167a13d3b54a84c82b

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4A6CJyQHFEH1OKZ3StXZsGXxq7y4PX:Qw+asqN5aW/hLoCJy6qV5ZigGhWP

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: ronrivest@airmail.cc (roneast@tuta.io) YOUR ID ronivest@tutanota.com ------------------------------------------------------------------------------------------------------- https://tox.chat/download.html 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.
Emails

ronrivest@airmail.cc

roneast@tuta.io

ronivest@tutanota.com
URLs

https://tox.chat/download.html

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
  • 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
  • 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\2023-02-21_3797a1dd86bf2e8879d02cfc7c9fa601_crysis.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-02-21_3797a1dd86bf2e8879d02cfc7c9fa601_crysis.exe"
    1⤵
    • 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:316
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1376
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:1724
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:692
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2492
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:2656
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:2652
        • 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:2712
        • 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:2756
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:532

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Initial Access

      Execution

      Persistence

      Registry Run Keys / Startup Folder

      1
      T1060

      Privilege Escalation

      Defense Evasion

      File Deletion

      2
      T1107

      Modify Registry

      2
      T1112

      Credential Access

      Credentials in Files

      1
      T1081

      Discovery

      System Information Discovery

      1
      T1082

      Lateral Movement

      Collection

      Data from Local System

      1
      T1005

      Exfiltration

      Command and Control

      Impact

      Inhibit System Recovery

      2
      T1490

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\osetup.dll.id-AF22FDD0.[jerd@420blaze.it].jron
        Filesize

        6.3MB

        MD5

        01bb1d5a5c418476773b96ff4c14d563

        SHA1

        9c53a60cbe55f822258df80926274852461fe436

        SHA256

        0b391acd955da5dfc63e344c8b343571ab16e0d87899ebd63fe6aa2d8463f0f1

        SHA512

        95d27a1512113ca4e39a32cae6979a40be03714823fcca138ef1425e16ab3052cc90654993b3749c1e6cae645eddb0038407def52fe037e1be63306c1aaf6dff

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

        4KB

        MD5

        cf404f3aaba2774af5c518673177da2b

        SHA1

        5a8f251dbdee09a035a53fabda0c6d40e95536de

        SHA256

        005f5e1a9c8e22850f3e045252519400adcc23ee942b3d07705b28eb57ee9f73

        SHA512

        7679e72f9bf01ae53729f3f289ae380428c5f1be04f05fab7c54f354d60630948e22902b7f30c37897dc8eab24e8787b36dd8806e36f1e3e60aecaa4d495fad2

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

        4KB

        MD5

        cf404f3aaba2774af5c518673177da2b

        SHA1

        5a8f251dbdee09a035a53fabda0c6d40e95536de

        SHA256

        005f5e1a9c8e22850f3e045252519400adcc23ee942b3d07705b28eb57ee9f73

        SHA512

        7679e72f9bf01ae53729f3f289ae380428c5f1be04f05fab7c54f354d60630948e22902b7f30c37897dc8eab24e8787b36dd8806e36f1e3e60aecaa4d495fad2

        Download Submit
      • memory/2756-20129-0x000007FFFFF80000-0x000007FFFFF90000-memory.dmp
        Filesize

        64KB

        Download