Overview

overview

10

Static

static

10

dharma.exe

windows7-x64

10

dharma.exe

windows10-1703-x64

10

dharma.exe

windows10-2004-x64

10

Resubmissions

23-10-2023 21:58

231023-1vlrxsgc2w 10

28-12-2022 20:03

221228-ys52nsbd89 10

28-12-2022 19:41

221228-yej72sbd64 10

28-12-2022 19:27

221228-x569tsbd43 10

Analysis

  • max time kernel
    151s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231023-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-10-2023 21:58

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General

  • Target

    dharma.exe

  • Size

    677KB

  • MD5

    2d4ec86793fec1e10ac8fb617b2dcdbd

  • SHA1

    078df2b23e7e24f2397532f9ec2694191fd9cc20

  • SHA256

    a6ed8beb599f2aa594298076a2e8312871a2b12feb8e5d072d51335f21f85d7b

  • SHA512

    1e15b4c910532ed36cf3adf605f744784224ceaa815e71588fb521f0e7b76975dc37889e6c8ac2e1c888060eda2380850c8877a801c74e222db043715719c5de

  • SSDEEP

    12288:5IODa1GPYOBsDMOUaIQpGyEV3T5W241YcWEhpEdVe1/4vS1ZoYGIRUafy5LT+0w:5IO+aYxHjpYT5s1YcWEhpEdVe1/4vS1T

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! 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 4165256C 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 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Renames multiple (459) 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
  • Suspicious use of SetThreadContext 1 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 20 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\dharma.exe
    "C:\Users\Admin\AppData\Local\Temp\dharma.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3796
    • C:\Users\Admin\AppData\Local\Temp\dharma.exe
      C:\Users\Admin\AppData\Local\Temp\dharma.exe
      2⤵
      • 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:4556
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1848
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          4⤵
            PID:5028
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            4⤵
            • Interacts with shadow copies
            PID:4996
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:5496
          • C:\Windows\system32\mode.com
            mode con cp select=1251
            4⤵
              PID:6140
            • C:\Windows\system32\vssadmin.exe
              vssadmin delete shadows /all /quiet
              4⤵
              • Interacts with shadow copies
              PID:2184
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            3⤵
              PID:4740
            • C:\Windows\System32\mshta.exe
              "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
              3⤵
                PID:748
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2680

          Network

          MITRE ATT&CK Enterprise v15

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          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe.id-4165256C.[[email protected]].money
            Filesize

            2.9MB

            MD5

            0a1c4fb443c5651b2451273fa80c7867

            SHA1

            0a6442fb0b8a35a7992f83db699ce137e1aeaa14

            SHA256

            ce0695507ba0c77823b5d6a2fac6748619311f8694c229ebd10612d1bead42ab

            SHA512

            90ef5c505c7b9fff06811beb52e0c18ead73480679ea1d6933db2ac5c9c0eec633defa26376ba60e1806bf807deacd0d7539f0381541979ed301c32bd1512906

            Download Submit

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

            13KB

            MD5

            ec00b4b8eb11752e5eacfd51400a2214

            SHA1

            1308eacc22ebaefae39a2f0a29e26042f00bd809

            SHA256

            2a2bea1a3f017baef227398d5ba2e4c769432f76f8a043ee844abedc1c82dbe2

            SHA512

            e1c89cce8ae886d415634ba470a671d2b466ac7a93bcecec1f5982bbfeb59335c150bc600e301665dbf48589e7e3f041f63217d3f33e821535f67d69fdcccbf9

            Download Submit

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

            13KB

            MD5

            ec00b4b8eb11752e5eacfd51400a2214

            SHA1

            1308eacc22ebaefae39a2f0a29e26042f00bd809

            SHA256

            2a2bea1a3f017baef227398d5ba2e4c769432f76f8a043ee844abedc1c82dbe2

            SHA512

            e1c89cce8ae886d415634ba470a671d2b466ac7a93bcecec1f5982bbfeb59335c150bc600e301665dbf48589e7e3f041f63217d3f33e821535f67d69fdcccbf9

            Download Submit

          • memory/3796-0-0x0000000002AE0000-0x0000000002B13000-memory.dmp

            Filesize

            204KB

            Download

          • memory/3796-1-0x0000000002980000-0x0000000002981000-memory.dmp

            Filesize

            4KB

            Download

          • memory/3796-2-0x0000000002980000-0x0000000002981000-memory.dmp

            Filesize

            4KB

            Download

          • memory/3796-3-0x0000000002980000-0x0000000002981000-memory.dmp

            Filesize

            4KB

            Download

          • memory/3796-4-0x0000000002AE0000-0x0000000002B13000-memory.dmp

            Filesize

            204KB

            Download

          • memory/3796-5-0x0000000002980000-0x0000000002981000-memory.dmp

            Filesize

            4KB

            Download

          • memory/3796-6-0x0000000002980000-0x0000000002981000-memory.dmp

            Filesize

            4KB

            Download

          • memory/3796-10-0x0000000002AE0000-0x0000000002B13000-memory.dmp

            Filesize

            204KB

            Download

          • memory/4556-1691-0x0000000000400000-0x0000000000419000-memory.dmp

            Filesize

            100KB

            Download