Overview

overview

10

Static

static

1

loader.bat

windows10-2004-x64

10

loader.bat

windows10-ltsc_2021-x64

10

loader.bat

windows11-21h2-x64

10

Analysis

  • max time kernel
    900s
  • max time network
    902s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260513-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    13/07/2026, 01:57

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General

  • Target
    loader.bat
  • Size 283KB
  • Sample260713-cdsl5sc15v
  • SHA256 85999fede944d4319a8e8840f95efa6a58e2976c9272a759fe22e4b8abb2fe61
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
adwaredefense_evasionexecutiondonutloaderxwormloaderpersistenceratspywaretrojan

Malware Config

Extracted

Family

  • xworm

C2

  • 45.153.34.196:6767

Attributes
  • Install_directory

    %AppData%

  • install_file

    Contacts/sms.exe

Signatures

  • Family: DonutLoader

    DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

    loaderdonutloader
  • Family: Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm
  • Detect Xworm Payload 1 IoCs
  • Detects DonutLoader 1 IoCs
    loader
  • Drops startup file 2 IoCs
  • Executes dropped EXE 17 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Deobfuscate/Decode Files or Information 1 TTPs 1 IoCs

    Payload decoded via CertUtil.

    defense_evasion
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

    execution
  • Modifies Internet Explorer settings 1 TTPs 64 IoCs
    adwarespyware
  • Modifies registry class 64 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

    persistenceexecution
  • Suspicious behavior: AddClipboardFormatListener 17 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 61 IoCs
  • Suspicious use of SetWindowsHookEx 35 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3372
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\loader.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4404
      • C:\Windows\system32\certutil.exe
        certutil -decode "C:\Users\Admin\AppData\Local\Temp\__nyconv_b64.txt" "C:\Users\Admin\AppData\Local\Temp\__nyconv.ps1"
        3⤵
        • Deobfuscate/Decode Files or Information
        PID:1788
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -NoProfile -ExecutionPolicy Bypass -File "C:\Users\Admin\AppData\Local\Temp\__nyconv.ps1"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4872
        • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
          "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\maapifwx\maapifwx.cmdline"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4512
          • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
            C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESA747.tmp" "c:\Users\Admin\AppData\Local\Temp\maapifwx\CSC93B500387EEF41DB8B199FA87AB8E7E2.TMP"
            5⤵
              PID:2352
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "sms" /tr "C:\Users\Admin\AppData\Roaming\Contacts/sms.exe"
        2⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2200
    • C:\Users\Admin\AppData\Roaming\Contacts\sms.exe
      C:\Users\Admin\AppData\Roaming\Contacts/sms.exe
      1⤵
      • Executes dropped EXE
      PID:3524
    • C:\Users\Admin\AppData\Roaming\Contacts\sms.exe
      C:\Users\Admin\AppData\Roaming\Contacts\sms.exe
      1⤵
      • Executes dropped EXE
      PID:4736
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:4716
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:3176
    • C:\Users\Admin\AppData\Roaming\Contacts\sms.exe
      "C:\Users\Admin\AppData\Roaming\Contacts/sms.exe"
      1⤵
      • Executes dropped EXE
      PID:2952
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:1072
    • C:\Users\Admin\AppData\Roaming\Contacts\sms.exe
      "C:\Users\Admin\AppData\Roaming\Contacts/sms.exe"
      1⤵
      • Executes dropped EXE
      PID:4656
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:3064
    • C:\Users\Admin\AppData\Roaming\Contacts\sms.exe
      "C:\Users\Admin\AppData\Roaming\Contacts/sms.exe"
      1⤵
      • Executes dropped EXE
      PID:4940
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:4560
    • C:\Users\Admin\AppData\Roaming\Contacts\sms.exe
      "C:\Users\Admin\AppData\Roaming\Contacts/sms.exe"
      1⤵
      • Executes dropped EXE
      PID:5028
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:4444
    • C:\Users\Admin\AppData\Roaming\Contacts\sms.exe
      "C:\Users\Admin\AppData\Roaming\Contacts/sms.exe"
      1⤵
      • Executes dropped EXE
      PID:4624
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:1256
    • C:\Users\Admin\AppData\Roaming\Contacts\sms.exe
      "C:\Users\Admin\AppData\Roaming\Contacts/sms.exe"
      1⤵
      • Executes dropped EXE
      PID:3968
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:444
    • C:\Users\Admin\AppData\Roaming\Contacts\sms.exe
      "C:\Users\Admin\AppData\Roaming\Contacts/sms.exe"
      1⤵
      • Executes dropped EXE
      PID:2092
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:1928
    • C:\Users\Admin\AppData\Roaming\Contacts\sms.exe
      "C:\Users\Admin\AppData\Roaming\Contacts/sms.exe"
      1⤵
      • Executes dropped EXE
      PID:1936
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:5100
    • C:\Users\Admin\AppData\Roaming\Contacts\sms.exe
      "C:\Users\Admin\AppData\Roaming\Contacts/sms.exe"
      1⤵
      • Executes dropped EXE
      PID:1128
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:1960
    • C:\Users\Admin\AppData\Roaming\Contacts\sms.exe
      "C:\Users\Admin\AppData\Roaming\Contacts/sms.exe"
      1⤵
      • Executes dropped EXE
      PID:4288
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:2140
    • C:\Users\Admin\AppData\Roaming\Contacts\sms.exe
      "C:\Users\Admin\AppData\Roaming\Contacts/sms.exe"
      1⤵
      • Executes dropped EXE
      PID:4456
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:2248
    • C:\Users\Admin\AppData\Roaming\Contacts\sms.exe
      "C:\Users\Admin\AppData\Roaming\Contacts/sms.exe"
      1⤵
      • Executes dropped EXE
      PID:3380
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:4200
    • C:\Users\Admin\AppData\Roaming\Contacts\sms.exe
      "C:\Users\Admin\AppData\Roaming\Contacts/sms.exe"
      1⤵
      • Executes dropped EXE
      PID:228
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:912
    • C:\Users\Admin\AppData\Roaming\Contacts\sms.exe
      "C:\Users\Admin\AppData\Roaming\Contacts/sms.exe"
      1⤵
      • Executes dropped EXE
      PID:4708
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:1468
    • C:\Users\Admin\AppData\Roaming\Contacts\sms.exe
      "C:\Users\Admin\AppData\Roaming\Contacts/sms.exe"
      1⤵
      • Executes dropped EXE
      PID:3540
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:4120

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          iconcache_idx.db
          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\iconcache_idx.db
          • Size 28KB
          • SHA256 886470988d016e56e3cba4479218ec209e2f9a86d826c74e87c5e7e26f6623a0
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          RESA747.tmp
          • Path C:\Users\Admin\AppData\Local\Temp\RESA747.tmp
          • Size 1KB
          • SHA256 c1fbd61713f1c85ccb81f7d8847fab2da172386b832bf68906e9b518bab9aada
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          __PSScriptPolicyTest_osgdrecl.hk5.ps1
          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_osgdrecl.hk5.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          __nyconv.ps1
          • Path C:\Users\Admin\AppData\Local\Temp\__nyconv.ps1
          • Size 117KB
          • SHA256 26edaf86027722421bef41370729de057a1b0f7a05364a28d14e428d70094938
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          __nyconv_b64.txt
          • Path C:\Users\Admin\AppData\Local\Temp\__nyconv_b64.txt
          • Size 4KB
          • SHA256 7cd66bb7475b475c6c8cb5e0e857a120077f3c60862e15d7341bcc4a7145e789
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          __nyconv_b64.txt
          • Path C:\Users\Admin\AppData\Local\Temp\__nyconv_b64.txt
          • Size 163KB
          • SHA256 ff8ac7deb395994f9a5d6f28a3d4b10d29ace76f49dcab2f78d5adbcea44f184
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          maapifwx.dll
          • Path C:\Users\Admin\AppData\Local\Temp\maapifwx\maapifwx.dll
          • Size 3KB
          • SHA256 3f08529656710afd7afdf68ef9d93b180097f708954e4901f885d2a26049f9c1
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          sms.exe
          • Path C:\Users\Admin\AppData\Roaming\Contacts\sms.exe
          • Size 5.4MB
          • SHA256 a7c7fd5f9cec332554ca7cdb29afb5bd37af4dc43af78e55b14ca8b8c951c6a0
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          CSC93B500387EEF41DB8B199FA87AB8E7E2.TMP
          • Path \??\c:\Users\Admin\AppData\Local\Temp\maapifwx\CSC93B500387EEF41DB8B199FA87AB8E7E2.TMP
          • Size 652B
          • SHA256 f4ff0e8e5fe04e6435a9251f585c6c0a85ea09ff8a96910129435b458aba6386
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          maapifwx.0.cs
          • Path \??\c:\Users\Admin\AppData\Local\Temp\maapifwx\maapifwx.0.cs
          • Size 574B
          • SHA256 f88eea8b547603fde7adb9947d287db152e3967087fef2999a1c067d566e05be
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          maapifwx.cmdline
          • Path \??\c:\Users\Admin\AppData\Local\Temp\maapifwx\maapifwx.cmdline
          • Size 369B
          • SHA256 c38e6b3d306c9a647790f121a55adda7cf01ab679679e7c8fe8be44140b4c968
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          memory/3372-5059-0x0000000008AE0000-0x0000000008AF0000-memory.dmp
          Download

          memory/3372-5065-0x0000000008AE0000-0x0000000008AF0000-memory.dmp
          Download

          memory/3372-5069-0x0000000008AE0000-0x0000000008AF0000-memory.dmp
          Download

          memory/3372-5041-0x00000000023A0000-0x00000000023B6000-memory.dmp
          Download

          memory/3372-5042-0x00000000026F0000-0x0000000002704000-memory.dmp
          Download

          memory/3372-5048-0x0000000002490000-0x0000000002491000-memory.dmp
          Download

          memory/3372-5049-0x00000000024A0000-0x00000000024A1000-memory.dmp
          Download

          memory/3372-5068-0x0000000008AE0000-0x0000000008AF0000-memory.dmp
          Download

          memory/3372-5054-0x0000000008AE0000-0x0000000008AF0000-memory.dmp
          Download

          memory/3372-5055-0x0000000008AE0000-0x0000000008AF0000-memory.dmp
          Download

          memory/3372-5056-0x0000000008AE0000-0x0000000008AF0000-memory.dmp
          Download

          memory/3372-5057-0x0000000008AE0000-0x0000000008AF0000-memory.dmp
          Download

          memory/3372-5067-0x0000000008AE0000-0x0000000008AF0000-memory.dmp
          Download

          memory/3372-5066-0x0000000008AE0000-0x0000000008AF0000-memory.dmp
          Download

          memory/3372-5058-0x0000000008AE0000-0x0000000008AF0000-memory.dmp
          Download

          memory/3372-5061-0x0000000008AE0000-0x0000000008AF0000-memory.dmp
          Download

          memory/3372-5064-0x0000000008AE0000-0x0000000008AF0000-memory.dmp
          Download

          memory/3372-5063-0x0000000008AE0000-0x0000000008AF0000-memory.dmp
          Download

          memory/3372-5062-0x0000000008AE0000-0x0000000008AF0000-memory.dmp
          Download

          memory/3372-5060-0x0000000008AE0000-0x0000000008AF0000-memory.dmp
          Download

          memory/4872-5018-0x000001FDFA510000-0x000001FDFA532000-memory.dmp
          Download

          memory/4872-5026-0x000001FDFA7A0000-0x000001FDFA7B0000-memory.dmp
          Download

          memory/4872-5016-0x000001FDFA7A0000-0x000001FDFA7B0000-memory.dmp
          Download

          memory/4872-5040-0x000001FDFA500000-0x000001FDFA508000-memory.dmp
          Download

          memory/4872-5017-0x000001FDFA7A0000-0x000001FDFA7B0000-memory.dmp
          Download