Overview

overview

10

Static

static

winload.exe

windows7_x64

10

winload.exe

windows10_x64

10

Analysis

  • max time kernel
    225s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    17-12-2021 13:51

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General

  • Target

    winload.exe

  • Size

    92KB

  • MD5

    ea5b39f4ae5947c5f8e1ac7611f850d2

  • SHA1

    f5351778c76ff4155f85473b73cfe0e4581a1131

  • SHA256

    b882013f2b66b391b1988e9d2bc5a0cd6357c2c942b30aad8fe1ea17ba46b94f

  • SHA512

    061d60e4072d73d6c7a8b0161e3d35861d61a06f1fea750a479e54ff151ee7ee1ef70fac9b9dc94c43f6b4300aba9fa2e47945eece0254a4911887758a855507

Score
10/10
dharmapersistenceransomwarespywarestealer

Malware Config

Extracted

Path

C:\ProgramData\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 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
  • 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\winload.exe
    "C:\Users\Admin\AppData\Local\Temp\winload.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:864
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1824
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:720
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1092
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1224
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:1696
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:1968
        • 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:1844
        • 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:2008
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1992

      Network

      MITRE ATT&CK Enterprise v6

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      Downloads

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

        7e3b61c877b4acfd048ea3b6ad12dbe2

        SHA1

        4813c84860d881017d6d3475f85b84034593c88e

        SHA256

        0c56d4fe9e5c1b1a4c59ff0a2e37635bf697a8312fed956ed0a5ad2285c153af

        SHA512

        64984c374c6f435c3073c36f01eec91ef559cd9bd9ad7047833c4af4632b61b3848485f080c388227bb064550f3a181c1b1f653e715323effcc69f2e24f32fbe

        Download Submit

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

        7e3b61c877b4acfd048ea3b6ad12dbe2

        SHA1

        4813c84860d881017d6d3475f85b84034593c88e

        SHA256

        0c56d4fe9e5c1b1a4c59ff0a2e37635bf697a8312fed956ed0a5ad2285c153af

        SHA512

        64984c374c6f435c3073c36f01eec91ef559cd9bd9ad7047833c4af4632b61b3848485f080c388227bb064550f3a181c1b1f653e715323effcc69f2e24f32fbe

        Download Submit

      • memory/720-57-0x0000000000000000-mapping.dmp

        Download

      • memory/864-55-0x0000000075421000-0x0000000075423000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1092-58-0x0000000000000000-mapping.dmp

        Download

      • memory/1224-59-0x0000000000000000-mapping.dmp

        Download

      • memory/1696-60-0x0000000000000000-mapping.dmp

        Download

      • memory/1824-56-0x0000000000000000-mapping.dmp

        Download

      • memory/1844-62-0x0000000000000000-mapping.dmp

        Download

      • memory/1968-61-0x0000000000000000-mapping.dmp

        Download

      • memory/2008-63-0x0000000000000000-mapping.dmp

        Download

      • memory/2008-64-0x000007FEFB781000-0x000007FEFB783000-memory.dmp

        Filesize

        8KB

        Download