Overview

overview

10

Static

static

10

256c7da35b...23.exe

windows7-x64

10

256c7da35b...23.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    51s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-06-2024 20:40

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General

  • Target

    256c7da35b7efeff1db388ad09d341bc32839dae0edcb5524bc39fa358fe4d23.exe

  • Size

    92KB

  • MD5

    609d2e4eb7d20b36325a7802f271dc01

  • SHA1

    469a568005cfafb8938cc7b16f365ab8f225978b

  • SHA256

    256c7da35b7efeff1db388ad09d341bc32839dae0edcb5524bc39fa358fe4d23

  • SHA512

    26bf39e82253ee0511b3498efb320785ea39b6904d8fea73aa8fe81bd218774192f484c4b8e05e69b4c55176d566afca70d187c270347a8a13a0b0c9a019e72f

  • SSDEEP

    1536:GBwl+KXpsqN5vlwWYyhZ9S4AB8Dsx7Zoygwff/WDb4hkUwqS06ky597:ww+asqN5aW/hS1Z2bDbCkUK0

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 136CDBA5 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 5 files for free decryption. The total size of files must be less than 10Mb (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 (515) files with added filename extension

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

    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).

  • 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\256c7da35b7efeff1db388ad09d341bc32839dae0edcb5524bc39fa358fe4d23.exe
    "C:\Users\Admin\AppData\Local\Temp\256c7da35b7efeff1db388ad09d341bc32839dae0edcb5524bc39fa358fe4d23.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:4716
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1928
      • 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:748
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2644
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:4468
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:8056
        • 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:8224
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:3268
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:5220

          Network

          MITRE ATT&CK Enterprise v15

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          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems32.dll.id-136CDBA5.[[email protected]].bip
            Filesize

            2.7MB

            MD5

            87a4b2905647abc1197537284e5b379a

            SHA1

            8b5671147dfaf7b32c6541a1c41f0078f9fe2509

            SHA256

            e9a6d1dba798cf15b182bd84a977a6905160b81a20cbb86a2464f265090e4e81

            SHA512

            4033c043beb56821328bb1c4e1391481c5d64e943de7aeceed346cdb092f109a76c519cf99b1dfb004f0f354175eb6b3ad6687d3da09a3e22c4ef77e9f9ee38a

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

            13KB

            MD5

            6e265871d2ca69547cb5d79dfcabf620

            SHA1

            0af6fb8065ed740d422f950cb544df852ab199b9

            SHA256

            7bce3b6470db4f63b8c6a6d97bf035c26061567b5d285e862a4b208f3798d8bd

            SHA512

            366755451e4243095696e34547a748b918144e4a95bd4a89ed26de9733b5f6bc8c698933047fdd7919252175bb587a88a30eaeb6d49dad9ffb52e5cf2a7d824c

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