Overview

overview

10

Static

static

dharma.exe

windows7-x64

10

Analysis

  • max time kernel
    58s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    28-12-2022 14:49

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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:\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 D774FBB0 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
  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

    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
  • 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). Likely ransomware behaviour.

  • 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 52 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

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:1640
    • C:\Users\Admin\AppData\Local\Temp\dharma.exe
      C:\Users\Admin\AppData\Local\Temp\dharma.exe
      2⤵
      • Modifies extensions of user files
      • 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:520
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:584
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          4⤵
            PID:1760
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            4⤵
            • Interacts with shadow copies
            PID:1672
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1276
          • C:\Windows\system32\mode.com
            mode con cp select=1251
            4⤵
              PID:292
            • C:\Windows\system32\vssadmin.exe
              vssadmin delete shadows /all /quiet
              4⤵
              • Interacts with shadow copies
              PID:896
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            3⤵
            • Modifies Internet Explorer settings
            PID:1372
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            3⤵
            • Modifies Internet Explorer settings
            PID:1676
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1652

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        13KB

        MD5

        fdd21892de85be8a5353c4dcf60964f7

        SHA1

        6c2649c9dac953471fa1ae56571d2f741cf795e8

        SHA256

        30e05caf23a0089514cd04d92e5a420902f34ca7963b6abdb4eb73b61e84d67a

        SHA512

        b9e46af937d0f224980c51ffd6809c601a989dd60e42d5aac7a88892025ce2329c370505b2834f41695af8da4d1ac693ebb27a91f4724e64fc6e45d95ca6299e

        Download Submit

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

        13KB

        MD5

        fdd21892de85be8a5353c4dcf60964f7

        SHA1

        6c2649c9dac953471fa1ae56571d2f741cf795e8

        SHA256

        30e05caf23a0089514cd04d92e5a420902f34ca7963b6abdb4eb73b61e84d67a

        SHA512

        b9e46af937d0f224980c51ffd6809c601a989dd60e42d5aac7a88892025ce2329c370505b2834f41695af8da4d1ac693ebb27a91f4724e64fc6e45d95ca6299e

        Download Submit

      • memory/292-68-0x0000000000000000-mapping.dmp

        Download

      • memory/520-61-0x000000000040A9D0-mapping.dmp

        Download

      • memory/520-62-0x0000000000400000-0x0000000000419000-memory.dmp

        Filesize

        100KB

        Download

      • memory/520-56-0x0000000000400000-0x0000000000419000-memory.dmp

        Filesize

        100KB

        Download

      • memory/584-64-0x0000000000000000-mapping.dmp

        Download

      • memory/896-69-0x0000000000000000-mapping.dmp

        Download

      • memory/1276-67-0x0000000000000000-mapping.dmp

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      • memory/1372-70-0x0000000000000000-mapping.dmp

        Download

      • memory/1640-54-0x00000000761F1000-0x00000000761F3000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1640-55-0x0000000001ED0000-0x0000000001F03000-memory.dmp

        Filesize

        204KB

        Download

      • memory/1672-66-0x0000000000000000-mapping.dmp

        Download

      • memory/1676-71-0x0000000000000000-mapping.dmp

        Download

      • memory/1760-65-0x0000000000000000-mapping.dmp

        Download