Overview

overview

10

Static

static

winhost.exe

windows7_x64

10

winhost.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    1800s
  • max time network
    1565s
  • platform
    windows7_x64
  • resource
    win7-es-20211208
  • submitted
    05-03-2022 02:15

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General

  • Target

    winhost.exe

  • Size

    92KB

  • MD5

    49973e9179195c665b4e55102ac13eb2

  • SHA1

    75bc5aac8dab68c12b770084a359526e1717c254

  • SHA256

    3056012d6cb364e7c4ef9989b73e3332b85647896a22ec4ac0637a618b1034f9

  • SHA512

    3876514133aba684b4f7b4c75a0c93c86394a8bbd35f5a7f25185e8a089de47a72a12f618342b05d0c8924c644f7128290e2189efbda359ab7937308d99892d7

Score
10/10
dharmapersistenceransomwarespywarestealer

Malware Config

Extracted

Path

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

Ransom Note
YOUR FILES ARE ENCRYPTED 1024 Don't worry, you can return all your files! If you want to restore them, write to the mail: [email protected] YOUR ID [email protected] ATTENTION! We recommend you contact us directly to avoid overpaying agents 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 2 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
  • 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\winhost.exe
    "C:\Users\Admin\AppData\Local\Temp\winhost.exe"
    1⤵
    • 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:1700
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1900
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:1832
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1828
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:524
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:880
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:1920
        • 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:1484
        • 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:888
      • C:\Program Files\Mozilla Firefox\default-browser-agent.exe
        "C:\Program Files\Mozilla Firefox\default-browser-agent.exe" do-task
        1⤵
          PID:1840
        • C:\Windows\system32\vssvc.exe
          C:\Windows\system32\vssvc.exe
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1820

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta
          MD5

          1cbb62b225419c8428b26983a535fda6

          SHA1

          305307aff234191d8f377443e83d60a24dc9f046

          SHA256

          ead6083d32bede7ea43a0223756859781d7427c3bb115201aafa701f05f7377e

          SHA512

          1acd44a19d058840b40b436b5d584719c4d359afd1d3b38e82d5e7974573e04433466ef7392aec31ef5439c303445097905e8781ef3d5fb4c901782c9ecf9612

          Download Submit

        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta
          MD5

          1cbb62b225419c8428b26983a535fda6

          SHA1

          305307aff234191d8f377443e83d60a24dc9f046

          SHA256

          ead6083d32bede7ea43a0223756859781d7427c3bb115201aafa701f05f7377e

          SHA512

          1acd44a19d058840b40b436b5d584719c4d359afd1d3b38e82d5e7974573e04433466ef7392aec31ef5439c303445097905e8781ef3d5fb4c901782c9ecf9612

          Download Submit

        • memory/1484-56-0x000007FEFC131000-0x000007FEFC133000-memory.dmp

          Filesize

          8KB

          Download

        • memory/1700-55-0x0000000075A61000-0x0000000075A63000-memory.dmp

          Filesize

          8KB

          Download