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
    90s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-02-2023 20:29

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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:\Users\Admin\AppData\Roaming\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
  • 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\2023-02-21_3797a1dd86bf2e8879d02cfc7c9fa601_crysis.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-02-21_3797a1dd86bf2e8879d02cfc7c9fa601_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:3148
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1920
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:1976
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:4800
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3596
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:1616
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:452
        • 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:5148
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:6320
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:5060

          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:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems32.dll.id-DFFC4814.[jerd@420blaze.it].jron
            Filesize

            2.7MB

            MD5

            61fa6e38e60460882be39b6c777cc355

            SHA1

            56485b6a050716ed83278f2e56ef4fe645c66825

            SHA256

            30d6f0805fe3b0049970b09b193b8180d7c04a917aa5eb1923a006a98d17de5e

            SHA512

            076050876a9ce7fc70fa9e830a6170d19c679cd5c3911b1309b26b14dc2a4656bdfcd80dc2b40da06c60f1e9e36bffe424b5540c89ce9ccd547f08bdc7291d33

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

            4KB

            MD5

            81f7760e1bcf07f3e950955d289df1b7

            SHA1

            235dc4716b2088c373372a3bb4ff10ddf1cfcac9

            SHA256

            658e85f129fca5a49deb0bdf191ac33ab9437cda57aa24d8281e7ef040d97f03

            SHA512

            509765450218ae0f80aa4f18ed9cf49b63406f1eac70d6e7276fcd3463c20ade5c04856b3b8a4307038d00830957e127db4f00f76f4f470e2990c0f9ab80a0a7

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

            4KB

            MD5

            81f7760e1bcf07f3e950955d289df1b7

            SHA1

            235dc4716b2088c373372a3bb4ff10ddf1cfcac9

            SHA256

            658e85f129fca5a49deb0bdf191ac33ab9437cda57aa24d8281e7ef040d97f03

            SHA512

            509765450218ae0f80aa4f18ed9cf49b63406f1eac70d6e7276fcd3463c20ade5c04856b3b8a4307038d00830957e127db4f00f76f4f470e2990c0f9ab80a0a7

            Download Submit