AtBroker.exe

  • File Path: C:\Windows\SysWOW64\AtBroker.exe
  • Description: Windows Assistive Technology Manager

Hashes

Type Hash
MD5 9BDC479E59B6983589576F1865F25247
SHA1 770904DA1FAD1B0A5FE7347BB2FE817E0F299FFD
SHA256 22B2A930D97C30BF53B7BC9838F8C4C938D7D0F806EAE3601F9A01AEAC803443
SHA384 9A28B5BE91C23353CB0C869585B6271CCB1127FF4BD8B7CB881F19EDEFC876D2E6A1FC7F67176C3ACE7C306C72BF871E
SHA512 736A1216B361D49426D7CFCFFE97C50207948139BD98F2C4D5C174553C3BF49D4F752C7C7E704E1A54F8474B9EE69925634DAFA7B7F670317DC3F6EDE4F94F61
SSDEEP 768:3T+Kjgbmte3DLwhxr5Fo2cMfUuc0xpkh9hwTPGV5X62UbtGeKJaD+RIu62EMKaHs:3Tlxr5FoJ+dvO9hwTGV9GfDg7DHpmV
IMP F791708993F51197FF73758E81E9637C
PESHA1 D203AFA581E27593A46961A41B021E0B7B54871B
PE256 D0EC86755BE20CD389C6CFC60CA825A561BC543AE16550A4E73B9533A1736746

Runtime Data

Loaded Modules:

Path
C:\Windows\SYSTEM32\ntdll.dll
C:\Windows\System32\wow64.dll
C:\Windows\System32\wow64cpu.dll
C:\Windows\System32\wow64win.dll
C:\Windows\SysWOW64\AtBroker.exe

Signature

  • Status: Signature verified.
  • Serial: 33000001C422B2F79B793DACB20000000001C4
  • Thumbprint: AE9C1AE54763822EEC42474983D8B635116C8452
  • Issuer: CN=Microsoft Windows Production PCA 2011, O=Microsoft Corporation, L=Redmond, S=Washington, C=US
  • Subject: CN=Microsoft Windows, O=Microsoft Corporation, L=Redmond, S=Washington, C=US

File Metadata

  • Original Filename: ATBroker.exe.mui
  • Product Name: Microsoft Windows Operating System
  • Company Name: Microsoft Corporation
  • File Version: 10.0.17763.1 (WinBuild.160101.0800)
  • Product Version: 10.0.17763.1
  • Language: English (United States)
  • Legal Copyright: Microsoft Corporation. All rights reserved.
  • Machine Type: 32-bit

File Scan

  • VirusTotal Detections: 0/69
  • VirusTotal Link: https://www.virustotal.com/gui/file/22b2a930d97c30bf53b7bc9838f8c4c938d7d0f806eae3601f9a01aeac803443/detection/

Possible Misuse

The following table contains possible examples of AtBroker.exe being misused. While AtBroker.exe is not inherently malicious, its legitimate functionality can be abused for malicious purposes.

Source Source File Example License
sigma win_install_reg_debugger_backdoor.yml - '*\CurrentVersion\Image File Execution Options\atbroker.exe*' DRL 1.0
LOLBAS Atbroker.yml Name: Atbroker.exe  
LOLBAS Atbroker.yml - Command: ATBroker.exe /start malware  
LOLBAS Atbroker.yml - Path: C:\Windows\System32\Atbroker.exe  
LOLBAS Atbroker.yml - Path: C:\Windows\SysWOW64\Atbroker.exe  
LOLBAS Atbroker.yml - IOC: Unknown AT starting C:\Windows\System32\ATBroker.exe /start malware  
atomic-red-team T1546.008.md * App Switcher: C:\Windows\System32\AtBroker.exe</blockquote> MIT License. © 2018 Red Canary
atomic-red-team T1546.008.md | parent_list | Comma separated list of system binaries to which you want to attach each #{attached_process}. Default: “osk.exe” | String | osk.exe, sethc.exe, utilman.exe, magnify.exe, narrator.exe, DisplaySwitch.exe, atbroker.exe| MIT License. © 2018 Red Canary

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