Utilman.exe

  • File Path: C:\Windows\SysWOW64\Utilman.exe
  • Description: Utility Manager

Hashes

Type Hash
MD5 BE7F3D92E756F29B5FFD07220B82F685
SHA1 0E1BBE61E9C365A05E4F455384012A3B9E1A55D4
SHA256 0F1F018863BF9B2AFADD6861F290BE90D6B28981756D93499AA7C87F5BDAFB23
SHA384 8BA76CA58E5442FF85A5388722F6AD7CA92ACD4A1C6460F900A970AA28255073834FC05BFFB39CAAC61C644EB9C2C0E1
SHA512 C195117B351BD17F5494F3741CA62943473306059E57EFEDB551FFE0144AA016DB276E7C68C18BF2CBAA8BB6C260EC121C44BBDEB7C818DC9A47BEEA86E319AC
SSDEEP 1536:e2LFor6LPhyJSoS3Oa3irCB5PTwliSPTcGgoLIbav/5tKcWMVGoPXiS:vmr6jMke7rCSm/Sl

Signature

  • Status: Signature verified.
  • Serial: 33000000BCE120FDD27CC8EE930000000000BC
  • Thumbprint: E85459B23C232DB3CB94C7A56D47678F58E8E51E
  • 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: utilman2.exe.mui
  • Product Name: Microsoft Windows Operating System
  • Company Name: Microsoft Corporation
  • File Version: 10.0.14393.0 (rs1_release.160715-1616)
  • Product Version: 10.0.14393.0
  • Language: English (United States)
  • Legal Copyright: Microsoft Corporation. All rights reserved.

Possible Misuse

The following table contains possible examples of Utilman.exe being misused. While Utilman.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\utilman.exe*' DRL 1.0
sigma sysmon_stickykey_like_backdoor.yml - '*\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\utilman.exe\Debugger' DRL 1.0
sigma sysmon_stickykey_like_backdoor.yml - '*cmd.exe utilman.exe *' DRL 1.0
atomic-red-team T1546.008.md Two common accessibility programs are C:\Windows\System32\sethc.exe, launched when the shift key is pressed five times and C:\Windows\System32\utilman.exe, launched when the Windows + U key combination is pressed. The sethc.exe program is often referred to as “sticky keys”, and has been used by adversaries for unauthenticated access through a remote desktop login screen. (Citation: FireEye Hikit Rootkit) MIT License. © 2018 Red Canary
atomic-red-team T1546.008.md For simple binary replacement on Windows XP and later as well as and Windows Server 2003/R2 and later, for example, the program (e.g., C:\Windows\System32\utilman.exe) may be replaced with “cmd.exe” (or another program that provides backdoor access). Subsequently, pressing the appropriate key combination at the login screen while sitting at the keyboard or when connected over Remote Desktop Protocol will cause the replaced file to be executed with SYSTEM privileges. (Citation: Tilbury 2014) 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
atomic-red-team T1546.012.md Similar to Accessibility Features, on Windows Vista and later as well as Windows Server 2008 and later, a Registry key may be modified that configures “cmd.exe,” or another program that provides backdoor access, as a “debugger” for an accessibility program (ex: utilman.exe). After the Registry is modified, pressing the appropriate key combination at the login screen while at the keyboard or when connected with Remote Desktop Protocol will cause the “debugger” program to be executed with SYSTEM privileges. (Citation: Tilbury 2014) MIT License. © 2018 Red Canary
signature-base thor_inverse_matches.yar description = “Abnormal utilman.exe - typical strings not found in file” CC BY-NC 4.0
signature-base thor_inverse_matches.yar $win7 = “utilman.exe” wide fullword CC BY-NC 4.0
signature-base thor_inverse_matches.yar ( filename == “utilman.exe” or filename == “Utilman.exe” ) CC BY-NC 4.0

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