AtBroker.exe

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

Hashes

Type Hash
MD5 F3E6149FFBD29CC3FB4B975224AB4FCF
SHA1 C7FE62899CB337DCF9CFF0DEA6A3ADF61E2AE222
SHA256 CDC2B0207769F3F73BBF068EFF68661D145909B410F2C25FBFA5A38D4AAD464C
SHA384 C2FA89F85BC8F97CB849DF018B3F31BAFBC00858D743EBE70DBA3973558FAA14C37E66BDF468C8C9016976A636FCF272
SHA512 6D525914332227099ED2ED7AA2B218CCB7FA2EA49CABD1E8334299222A368FD48B609FD5DD5B2C8F4287D3193507433A4DE7B98A0184512B23A3BBB56FC97F98
SSDEEP 1536:RMa9OziOF0JbOKal+DmJTTc3vL9GSDNhGEiL:x9+iQ+InM8SxhGEiL
IMP 20DD334D18ED22744B3C9C88AA5E4B64
PESHA1 1386A9F338AABE60B7BFF2BC4F47924B33B71171
PE256 E3B7A03787C199047AF77C94CCD9775E4B5BFA60FCA2F4DEAC9D1FEB1DCB6282

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: 3300000266BD1580EFA75CD6D3000000000266
  • Thumbprint: A4341B9FD50FB9964283220A36A1EF6F6FAA7840
  • 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
  • Product Name: Microsoft Windows Operating System
  • Company Name: Microsoft Corporation
  • File Version: 10.0.19041.1 (WinBuild.160101.0800)
  • Product Version: 10.0.19041.1
  • Language: English (United States)
  • Legal Copyright: Microsoft Corporation. All rights reserved.
  • Machine Type: 32-bit

File Scan

  • VirusTotal Detections: 0/75
  • VirusTotal Link: https://www.virustotal.com/gui/file/cdc2b0207769f3f73bbf068eff68661d145909b410f2c25fbfa5a38d4aad464c/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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