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CVE-2022-21919 Mapped Sigma

Microsoft Windows User Profile Service Privilege Escalation Vulnerability

Vendor / product
Microsoft — Windows
Description (CISA)
Microsoft Windows User Profile Service contains an unspecified vulnerability that allows for privilege escalation.
Added to KEV
2022-04-25
Due date
2022-05-16
Required action
Apply updates per vendor instructions.
Known ransomware use
Unknown
CWE
CWE-1386
CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2022-21919
Elsewhere
cve.org · NVD · CISA KEV · JSON

ATT&CK techniques · CTID Mappings Explorer, ATT&CK 16.1, KEV snapshot 2025-07-28

2 mapping objects across 2 techniques. exploitation technique states how the vulnerability is exploited; primary and secondary impact state what exploitation achieves. They are different claims and are labelled as such.

TechniqueMapping typeCTID commentStatus in v19.2
T1078 Valid Accounts exploitation technique This vulnerability is exploited by an adversary who has already gained local access to the victim system. The adversary gains access to the vulnerability either by social engineering, a separate exploit, or malware. Exploiting this vulnerability grants the adversary elevated privileges on the victim system. This vulnerability has been identified as being exploited in the wild; however, technical details of how the vulnerability has been leveraged by a hacker or APT have not been publicly released.
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T1068 Exploitation for Privilege Escalation primary impact This vulnerability is exploited by an adversary who has already gained local access to the victim system. The adversary gains access to the vulnerability either by social engineering, a separate exploit, or malware. Exploiting this vulnerability grants the adversary elevated privileges on the victim system. This vulnerability has been identified as being exploited in the wild; however, technical details of how the vulnerability has been leveraged by a hacker or APT have not been publicly released.
ref 1 · ref 2 · ref 3 · ref 4
live

Detection chain · ATT&CK Enterprise v19.2 detection strategies, analytics, log sources

T1068 Exploitation for Privilege Escalation primary impact

Sigma rules tagged attack.t1068 (31)

Author: Florian Roth (Nextron Systems) · 2019-11-20 (modified 2024-12-01) · logsource: product=windows category=process_creation · 02e0b2ea-a597-428e-b04a-af6a1a403e5c
Detects an exploitation attempt in which the UAC consent dialogue is used to invoke an Internet Explorer process running as LOCAL_SYSTEM
Techniques: T1068
CVE tags: CVE-2019-1388
Author: Nasreddine Bencherchali (Nextron Systems) · 2022-08-18 (modified 2023-12-02) · logsource: product=windows category=driver_load · 05296024-fe8a-4baf-8f3d-9a5f5624ceb2
Detects loading of known malicious drivers via their hash.
Techniques: T1543.003T1068
Author: Florian Roth (Nextron Systems) · 2021-10-09 (modified 2022-12-25) · logsource: product=linux service=auditd · 071d5e5a-9cef-47ec-bc4e-a42e34d8d0ed
Detects command line parameter very often used with coin miners
Techniques: T1068
Author: Nisarg Suthar · 2025-08-01 · logsource: product=windows category=process_creation · 0fdc7c7f-c690-4217-9ae3-31f5156eed72
Detects suspicious child processes created by CrushFTP. It could be an indication of exploitation of a RCE vulnerability such as CVE-2025-54309.
CVE tags: CVE-2025-54309
Author: Swachchhanda Shrawn Poudel (Nextron Systems) · 2025-10-02 (modified 2026-03-31) · logsource: product=linux category=file_event · 10ac0730-c24e-4f4c-81f8-b13a1ac95a1d
Detects the creation of nsswitch.conf files in non-standard directories, which may indicate exploitation of CVE-2025-32463. This vulnerability requires an attacker to create a nsswitch.conf in a directory that will be used during sudo chroot operations. When sudo executes, it loads malicious shared libraries from user-controlled locations within the chroot environment, potentially leading to arbitrary code execution and privilege escalation.
Techniques: T1068
CVE tags: CVE-2025-32463
Author: @eyezuhk Isaac Fernandes · 2025-02-19 · logsource: product=windows category=image_load · 17ce9373-2163-4a2c-90ba-f91e9ef7a8c1
Detects potentially suspicious loading of "ksproxy.ax", which may indicate an attempt to exploit CVE-2024-35250.
Techniques: T1068
CVE tags: CVE-2024-35250
Author: Florian Roth (Nextron Systems) · 2017-03-01 (modified 2025-03-17) · logsource: product=linux · 18b042f0-2ecd-4b6e-9f8d-aa7a7e7de781
Detects buffer overflow attempts in Unix system log files
Techniques: T1068
Author: Florian Roth (Nextron Systems), oscd.community, Jonhnathan Ribeiro · 2019-11-15 (modified 2021-11-27) · logsource: product=windows category=process_creation · 1c373b6d-76ce-4553-997d-8c1da9a6b5f5
Detects exploitation attempt of privilege escalation vulnerability via SetupComplete.cmd and PartnerSetupComplete.cmd described in CVE-2019-1378
CVE tags: CVE-2019-1378
Author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), MSTIC · 2021-10-15 (modified 2022-10-05) · logsource: product=linux category=process_creation · 21541900-27a9-4454-9c4c-3f0a4240344a
Rule to detect the use of the SCX RunAsProvider Invoke_ExecuteShellCommand to execute any UNIX/Linux command using the /bin/sh shell. SCXcore, started as the Microsoft Operations Manager UNIX/Linux Agent, is now used in a host of products including Microsoft Operations Manager, Microsoft Azure, and Microsoft Operations Management Suite.
Techniques: T1068T1190T1203
Author: Swachchhanda Shrawan Poudel (Nextron Systems) · 2025-06-06 · logsource: product=windows category=process_creation · 38a1ac5f-9c74-47d2-a345-dd6f5eb4e7c8
Detects the execution of SharpSuccessor, a tool used to exploit the BadSuccessor attack for privilege escalation in WinServer 2025 Active Directory environments. Successful usage of this tool can let the attackers gain the domain admin privileges by exploiting the BadSuccessor vulnerability.
Techniques: T1068
Author: Nasreddine Bencherchali (Nextron Systems) · 2022-10-03 (modified 2023-12-02) · logsource: product=windows category=driver_load · 39b64854-5497-4b57-a448-40977b8c9679
Detects loading of known malicious drivers via the file name of the drivers.
Techniques: T1543.003T1068
Author: Florian Roth (Nextron Systems) · 2021-11-22 (modified 2022-12-25) · logsource: product=windows category=file_event · 3be82d5d-09fe-4d6a-a275-0d40d234d324
Detects signs of the exploitation of LPE CVE-2021-41379 that include an msiexec process that creates an elevation_service.exe file
Techniques: T1068
Author: Gene Kazimiarovich · 2026-04-30 · logsource: product=linux service=auditd · 474b415a-8b3d-4e6a-9f12-0d5c8a7b6e94
Detects creation of AF_ALG (Address Family 38) sockets via the socket() syscall. AF_ALG is the Linux kernel crypto API interface. It is exploited in CVE-2026-31431 to achieve local privilege escalation via a buffer overflow in the AF_ALG AEAD splice path that corrupts the page cache of SUID binaries. Legitimate AF_ALG usage is rare and confined to specific crypto utilities and VPN daemons using non-default kernel offload configurations.
Techniques: T1068
CVE tags: CVE-2026-31431
Author: Gene Kazimiarovich · 2026-05-09 · logsource: product=linux category=process_creation · 474b415a-d917-4f3b-8c62-9e1a0d5f7b48
Detects kernel auto-loading of the authencesn crypto module via modprobe This occurs when user-space code creates an AF_ALG socket and binds the authencesn AEAD cipher (e.g., authencesn(hmac(sha256),cbc(aes))). The kernel invokes modprobe to load the crypto module. This is a key indicator of CVE-2026-31431 (Copy Fail) exploitation, where the authencesn cipher is used to trigger a buffer overflow in the AF_ALG AEAD splice path, corrupting the page cache of SUID binaries for local privilege escalation. On Linux systems, modprobe is typically a symlink to kmod, so the process image will be /usr/bin/kmod (or /bin/kmod) with 'modprobe' appearing in the command line.
Techniques: T1068T1547.006
CVE tags: CVE-2026-31431
Audit CVE Event criticaltest
Author: Florian Roth (Nextron Systems), Zach Mathis · 2020-01-15 (modified 2022-10-22) · logsource: product=windows service=application · 48d91a3a-2363-43ba-a456-ca71ac3da5c2
Detects events generated by user-mode applications when they call the CveEventWrite API when a known vulnerability is trying to be exploited. MS started using this log in Jan. 2020 with CVE-2020-0601 (a Windows CryptoAPI vulnerability. Unfortunately, that is about the only instance of CVEs being written to this log.

All 31 rules on the technique page →

T1078 Valid Accounts exploitation technique

Sigma rules tagged attack.t1078 (56)

Author: Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo' · 2023-09-03 · logsource: product=azure service=riskdetection · 128faeef-79dd-44ca-b43c-a9e236a60f49
Detects sign-in with properties that are unfamiliar to the user. The detection considers past sign-in history to look for anomalous sign-ins.
Techniques: T1078
Author: Josh Nickels, Marius Rothenbücher · 2025-01-08 · logsource: product=m365 service=audit · 13f2d3f5-6497-44a7-bf5f-dc13ffafe5dc
Detects a successful login to the Microsoft Intune Company Portal which could allow bypassing Conditional Access Policies and InTune device trust using a tool like TokenSmith.
Techniques: T1078
Author: Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo' · 2023-09-03 · logsource: product=azure service=riskdetection · 1a41023f-1e70-4026-921a-4d9341a9038e
Identifies two sign-ins originating from geographically distant locations, where at least one of the locations may also be atypical for the user, given past behavior.
Techniques: T1078
Author: Mark Morowczynski '@markmorow', Bailey Bercik '@baileybercik' · 2022-06-01 · logsource: product=azure service=signinlogs · 248649b7-d64f-46f0-9fb2-a52774166fb5
Device code flow is an OAuth 2.0 protocol flow specifically for input constrained devices and is not used in all environments. If this type of flow is seen in the environment and not being used in an input constrained device scenario, further investigation is warranted. This can be a misconfigured application or potentially something malicious.
Techniques: T1078
Author: Micah Babinski (@micahbabinski), Zach Mathis (@yamatosecurity) · 2023-01-19 (modified 2024-03-11) · logsource: product=windows service=security · 259a9cdf-c4dd-4fa2-b243-2269e5ab18a2
Detects successful logon from public IP address via RDP. This can indicate a publicly-exposed RDP port.
Techniques: T1133T1078T1110
Author: Austin Songer · 2021-09-06 (modified 2022-06-08) · logsource: product=azure service=auditlogs · 352a54e1-74ba-4929-9d47-8193d67aba1e
Identifies when an user or application modified the federation settings on the domain.
Techniques: T1078
Author: jamesc-grafana · 2024-07-11 · logsource: product=aws service=cloudtrail · 352a918a-34d8-4882-8470-44830c507aa3
Detects when an instance identity has taken an action that isn't inside SSM. This can indicate that a compromised EC2 instance is being used as a pivot point.
Techniques: T1078T1078.002
Author: elhoim · 2022-09-09 (modified 2023-01-04) · logsource: product=windows service=security · 39698b3f-da92-4bc6-bfb5-645a98386e45
Detects suspicious computer name samtheadmin-{1..100}$ generated by hacktool
Techniques: T1078
CVE tags: CVE-2021-42278CVE-2021-42287
Author: Florian Roth (Nextron Systems) · 2017-03-17 (modified 2023-12-15) · logsource: product=windows service=security · 3ff152b2-1388-4984-9cd9-a323323fdadf
Detects interactive console logons to Server Systems
Techniques: T1078
Author: MikeDuddington, '@dudders1' · 2022-07-28 (modified 2026-05-09) · logsource: product=azure service=auditlogs · 4ad97bf5-a514-41a4-abd3-4f3455ad4865
Detects guest users being invited to tenant by non-approved inviters
Techniques: T1078
Author: Tim Brown · 2023-01-09 · logsource: product=cisco service=ldp · 50e606bf-04ce-4ca7-9d54-3449494bbd4b
Detects LDP failures which may be indicative of brute force attacks to manipulate MPLS labels
Techniques: T1078T1110T1557
Author: Security Onion Solutions · 2024-03-08 · logsource: product=opencanary category=application · 512cff7a-683a-43ad-afe0-dd398e872f36
Detects instances where a Telnet service on an OpenCanary node has had a login attempt.
Techniques: T1133T1078
Author: Mark Morowczynski '@markmorow', Bailey Bercik '@baileybercik' · 2022-06-01 · logsource: product=azure service=signinlogs · 55695bc0-c8cf-461f-a379-2535f563c854
Resource owner password credentials (ROPC) should be avoided if at all possible as this requires the user to expose their current password credentials to the application directly. The application then uses those credentials to authenticate the user against the identity provider.
Techniques: T1078
Author: Tim Brown · 2023-01-09 (modified 2023-01-23) · logsource: product=cisco service=bgp · 56fa3cd6-f8d6-4520-a8c7-607292971886
Detects BGP failures which may be indicative of brute force attacks to manipulate routing
Techniques: T1078T1110T1557
Author: Harjot Singh, '@cyb3rjy0t' · 2023-01-10 (modified 2025-07-02) · logsource: product=azure service=signinlogs · 572b12d4-9062-11ed-a1eb-0242ac120002
Detects risky authentication from a non AD registered device without MFA being required.
Techniques: T1078

All 56 rules on the technique page →

Sigma rules tagged with this CVE directly

1 rule carries cve.2022-21919.

Author: Cybex · 2022-08-16 (modified 2025-11-03) · logsource: product=windows service=application · 52a85084-6989-40c3-8f32-091e12e17692
Detects potential exploitation attempts of CVE-2022-21919 or CVE-2021-34484 leading to local privilege escalation via the User Profile Service. During exploitation of this vulnerability, two logs (Provider_Name: Microsoft-Windows-User Profiles Service) with EventID 1511 and 1515 are created (EventID 1515 may generate many false positives). Additionally, the directory \Users\TEMP may be created during exploitation. This behavior was observed on Windows Server 2008.
CVE tags: CVE-2022-21919CVE-2021-34484