onedrivestandaloneupdater.exe

Standalone Updater file version info (xCyclopedia)

LOLBAS Download 1 ATT&CK technique 1 documented command 1 known copy with hashes

How onedrivestandaloneupdater.exe is abused

documented by LOLBAS

Download T1105 Ingress Tool Transfer

Each abuse is LOLBAS's category and the options and words it uses; the full write-up is on LOLBAS's page for onedrivestandaloneupdater.exe.

1 documented command

from LOLBAS, each read by the identifier

Download T1105 Ingress Tool Transfer User privileges

Download a file from the web address specified in HKCU\Software\Microsoft\OneDrive\UpdateOfficeConfig\UpdateRingSettingURLFromOC. ODSUUpdateXMLUrlFromOC and UpdateXMLUrlFromOC must be equal to non-empty string values in that same registry key. UpdateOfficeConfigTimestamp is a UNIX epoch time which must be set to a large QWORD such as 99999999999 (in decimal) to indicate the URL cache is good. The downloaded file will be in %localappdata%\OneDrive\StandaloneUpdater\PreSignInSettingsConfig.json.

OneDriveStandaloneUpdater

Identify

The command the identifier reads trips no Sigma process-creation rule. These commands and their descriptions are from LOLBAS’s entry for onedrivestandaloneupdater.exe, by Elliot Killick, at commit 2056cb766250 of 2026-09-26, under the GPL-3.0 and LOLBAS’s notice, with no warranty. Changed: Markdown is shown formatted. The source is in lolbas-gtfobins-commands.json.gz, and the full entry is on LOLBAS’s page for onedrivestandaloneupdater.exe. The identifier reads it with LOLBAS’s placeholders filled in: a URL as https://example.com/file, a share as \\192.0.2.10\share\file, a path as C:\Data\file and a command as calc.exe.

What detects it

Sigma process creation rules

T1105Ingress Tool Transfer

Is it the real onedrivestandaloneupdater.exe?

file version info and known copies

Installed inC:\Users\user\AppData\Local\Microsoft\OneDrive\

Signed byMicrosoft Corporation

ProductMicrosoft OneDrive, Microsoft Corporation

DescriptionStandalone Updater

1 known copy

21.220.1024.0001 · C:\Users\user\AppData\Local\Microsoft\OneDrive\OneDriveStandaloneUpdater.exe · signed by Microsoft Corporation

b3e79d55cefb172bb10a42a0965422a1aa3eda052e414d0561e2a0361f0dee3b

From the file’s version info and the copies recorded by xCyclopedia (MIT). A copy in another folder, signed by someone else or with another hash is not necessarily malicious, but it is worth a closer look. In Ceplin, "<sha256>".whatis() says which known copy a hash is.