Overview

overview

10

Static

static

10

2024-06-11...ma.exe

windows7-x64

10

2024-06-11...ma.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    11-06-2024 13:28

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General

  • Target

    2024-06-11_e3840d3ae2255fe5a8414f0da16f877c_crysis_dharma.exe

  • Size

    92KB

  • MD5

    e3840d3ae2255fe5a8414f0da16f877c

  • SHA1

    2fa8674341a726bccbc990346f142577d915f55b

  • SHA256

    9959ff057928c12048a361533d4c37449336cc6be2396d81e1f9c0976f969075

  • SHA512

    633b91b8f49b2901c8bbfb064f92952c7b81f1c2882e6d00f374eabe65aa089800ce347c339f965d38cc1ad845b210a6f3e5efa0d54bc56b00c0c43b9a420b52

  • SSDEEP

    1536:GBwl+KXpsqN5vlwWYyhZ9S4AMx1QvXxrCA4/6yqdZ7wWEf:ww+asqN5aW/hS8kbyqdREf

Score
10/10
dharmadefense_evasionexecutionimpactpersistenceransomwarespywarestealer

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 022C674C 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 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Renames multiple (322) files with added filename extension

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

    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\2024-06-11_e3840d3ae2255fe5a8414f0da16f877c_crysis_dharma.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_e3840d3ae2255fe5a8414f0da16f877c_crysis_dharma.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:2256
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2832
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:2516
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1296
      • 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:4076
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:2400
        • 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:1436
        • 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:2768
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2892

      Network

      MITRE ATT&CK Enterprise v15

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      Downloads

      • C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\Office64WW.msi.id-022C674C.[[email protected]].pgp
        Filesize

        3.6MB

        MD5

        fb3bbf6565e6962ef714ae4994fcb176

        SHA1

        aaa9c54da557a57ec3568f581f38ed68e6aaefa0

        SHA256

        f7e84f982609ea021462ecbf991ab3f5988dac1aaec0a376f7c15b8a765b7dd2

        SHA512

        c2c7cd0e3366eb9f3f1689e9153c8c10266141dc028a45f2dc8561326bfc2b93e9fc178a8e37fa171d7b7b6b65c9e8fb89df2633eb313592b2570b84ad818437

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

        13KB

        MD5

        bff129df80421c294d1ea986a7b1ae55

        SHA1

        75e097991b0e4442b6f85cb825cd8eac56c9ecef

        SHA256

        5f67b5682cc16ac0aea7b1b13112860d003bc937da5c17f45197ec0aca191b03

        SHA512

        2f73dfa720364df538e2818cf915a1cafbb3f6d6987926ac93b3c8e208dc6ed4f87670d1ccc2e122ed9d3d9018d3eea2db0a70a72c3f8e601c55a5c18fe4a2ce

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      • memory/1436-20081-0x000007FFFFF80000-0x000007FFFFF90000-memory.dmp

        Filesize

        64KB

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