Overview

overview

10

Static

static

2023-01-20...is.exe

windows7-x64

10

2023-01-20...is.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-01-2023 09:16

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General

  • Target

    2023-01-20_e096b294d0ed5f42ca68bc41c47ac27a_crysis.exe

  • Size

    92KB

  • MD5

    e096b294d0ed5f42ca68bc41c47ac27a

  • SHA1

    1d5601986887ead48d036f1401330b8c9fd59eeb

  • SHA256

    622e2834e51caa303d120c7503d8fcce671226a0342d7be0f8cf546b44cee195

  • SHA512

    4d8ead3774210c552a0633db886ea1bfd3c13fcd51fd60efe9b7db8f27ff1a5a6ae4394cbcd8ec01b5514492966b118c4647efcea191313e4f1ec3536ba937ba

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4Ah610ButurulYOGLwf6v7ctk:Qw+asqN5aW/hLnbfSGOGLpv7c+

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 (ronvest@tutanota.de) YOUR ID jerd@420blaze.it 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

ronvest@tutanota.de

jerd@420blaze.it

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2023-01-20_e096b294d0ed5f42ca68bc41c47ac27a_crysis.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-01-20_e096b294d0ed5f42ca68bc41c47ac27a_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:3836
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1184
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:736
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2224
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4256
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:4292
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:4736
        • 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:3336
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:284
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:4156

          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

          1
          T1112

          Credential Access

          Credentials in Files

          1
          T1081

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          2
          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:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta
            Filesize

            4KB

            MD5

            126b858c2a0054831e7ad75c40543be8

            SHA1

            6c2f11bb35c7775fb92adf6f8f1015673dfcc7ac

            SHA256

            98c4724a701cdb20852668d4eb01e746152a7e71f54654945638655dafef2f74

            SHA512

            55d5295051f5421cf873972d705fa8c4aae9c0d75981ee261cdc51bfb8caccddd6159e79cd7c370e1ef361cecba88ec501742968389bdb203c0552365b03d788

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

            4KB

            MD5

            126b858c2a0054831e7ad75c40543be8

            SHA1

            6c2f11bb35c7775fb92adf6f8f1015673dfcc7ac

            SHA256

            98c4724a701cdb20852668d4eb01e746152a7e71f54654945638655dafef2f74

            SHA512

            55d5295051f5421cf873972d705fa8c4aae9c0d75981ee261cdc51bfb8caccddd6159e79cd7c370e1ef361cecba88ec501742968389bdb203c0552365b03d788

            Download Submit
          • memory/284-139-0x0000000000000000-mapping.dmp
            Download
          • memory/736-133-0x0000000000000000-mapping.dmp
            Download
          • memory/1184-132-0x0000000000000000-mapping.dmp
            Download
          • memory/2224-134-0x0000000000000000-mapping.dmp
            Download
          • memory/3336-138-0x0000000000000000-mapping.dmp
            Download
          • memory/4256-135-0x0000000000000000-mapping.dmp
            Download
          • memory/4292-136-0x0000000000000000-mapping.dmp
            Download
          • memory/4736-137-0x0000000000000000-mapping.dmp
            Download