Claims per month, 2026-03 to 2026-04. Peak 10 in 2026-03.
104
2026-032026-04
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Month
Claims
2026-03
10
2026-04
4
0 additional claims without a disclosure date
Defensive actions
The MITRE ATT&CK mitigations countering the most of this group's known techniques, derived automatically from MITRE's own group and mitigation data. Each links to the full guidance with NIST 800-53 controls and authoritative configuration sources.
SigmaHQ detection rules mapped to this group's MITRE ATT&CK techniques. One technique maps to many rules, so this shows the top few by status and severity, with a link to the full set on SigmaHQ.
Detection prerequisites: Platform: windows · Log source: process_creation
False positives: Admin activity; Scripts and administrative tools used in the monitored environment
Show rule YAML
title: Fsutil Suspicious Invocation
id: add64136-62e5-48ea-807e-88638d02df1e
status: stable
description: |
Detects suspicious parameters of fsutil (deleting USN journal, configuring it with small size, etc).
Might be used by ransomwares during the attack (seen by NotPetya and others).
references:
- https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/fsutil-usn
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070/T1070.md
- https://eqllib.readthedocs.io/en/latest/analytics/c91f422a-5214-4b17-8664-c5fcf115c0a2.html
- https://github.com/albertzsigovits/malware-notes/blob/558898932c1579ff589290092a2c8febefc3a4c9/Ransomware/Lockbit.md
- https://blog.cluster25.duskrise.com/2023/05/22/back-in-black-blackbyte-nt
author: Ecco, E.M. Anhaus, oscd.community
date: 2019-09-26
modified: 2023-09-09
tags:
- attack.impact
- attack.stealth
- attack.t1070
- attack.t1485
logsource:
category: process_creation
product: windows
detection:
selection_img:
- Image|endswith: '\fsutil.exe'
- OriginalFileName: 'fsutil.exe'
selection_cli:
CommandLine|contains:
- 'deletejournal' # usn deletejournal ==> generally ransomware or attacker
- 'createjournal' # usn createjournal ==> can modify config to set it to a tiny size
- 'setZeroData' # file setZeroData ==> empties a file with zeroes
condition: all of selection_*
falsepositives:
- Admin activity
- Scripts and administrative tools used in the monitored environment
level: high
False positives: Exploits that were attempted but unsuccessful.; Scanning attempts with the abnormal use of the HTTP POST method with no indication of code execution within the HTTP Client (Request) body. An example would be vulnerability scanners trying to identify unpatched versions while not actually exploiting the vulnerability. See description for investigation tips.
Show rule YAML
title: OMIGOD HTTP No Authentication RCE - CVE-2021-38647
id: ab6b1a39-a9ee-4ab4-b075-e83acf6e346b
status: stable
description: |
Detects the exploitation of OMIGOD (CVE-2021-38647) which allows remote execute (RCE) commands as root with just a single unauthenticated HTTP request.
Verify, successful, exploitation by viewing the HTTP client (request) body to see what was passed to the server (using PCAP).
Within the client body is where the code execution would occur. Additionally, check the endpoint logs to see if suspicious commands or activity occurred within the timeframe of this HTTP request.
references:
- https://www.wiz.io/blog/omigod-critical-vulnerabilities-in-omi-azure
- https://twitter.com/neu5ron/status/1438987292971053057?s=20
author: Nate Guagenti (neu5ron)
date: 2021-09-20
modified: 2025-11-03
tags:
- attack.privilege-escalation
- attack.initial-access
- attack.execution
- attack.lateral-movement
- attack.t1068
- attack.t1190
- attack.t1203
- attack.t1021.006
- attack.t1210
- detection.emerging-threats
- cve.2021-38647
logsource:
product: zeek
service: http
definition: Enable the builtin Zeek script that logs all HTTP header names by adding "@load policy/protocols/http/header-names" to your local.zeek config file. The script can be seen here for reference https://github.com/zeek/zeek/blob/d957f883df242ef159cfd846884e673addeea7a5/scripts/policy/protocols/http/header-names.zeek
detection:
selection:
status_code: 200
uri: /wsman
method: POST
auth_header:
client_header_names|contains: 'AUTHORIZATION'
too_small_http_client_body:
request_body_len: 0
# winrm_ports:
# id.resp_p:
# - 5985
# - 5986
# - 1270
condition: selection and not auth_header and not too_small_http_client_body
# condition: selection and winrm_ports and not auth_header and not too_small_http_client_body # Enable this to only perform search on default WinRM ports, however those ports are sometimes changed and therefore this is disabled by default to give a broader coverage of this rule
falsepositives:
- Exploits that were attempted but unsuccessful.
- Scanning attempts with the abnormal use of the HTTP POST method with no indication of code execution within the HTTP Client (Request) body. An example would be vulnerability scanners trying to identify unpatched versions while not actually exploiting the vulnerability. See description for investigation tips.
level: high
Atomic Red Team validating tests mapped to this group's MITRE ATT&CK techniques, shown beside the detection rules so you can validate the detections. This shows the top few, with a link to the full set on GitHub. Descriptive metadata only, never the attack commands.
This test uses LDAPDomainDump to perform account enumeration on a domain.
[Reference](https://securityonline.info/ldapdomaindump-active-directory-information-dumper-via-ldap/)
Adfind tool can be used for reconnaissance in an Active directory environment. This example has been documented by ransomware actors enumerating Active Directory Admin accounts
reference- http://www.joeware.net/freetools/tools/adfind/, https://stealthbits.com/blog/fun-with-active-directorys-admincount-attribute/
Adfind tool can be used for reconnaissance in an Active directory environment. This example has been documented by ransomware actors enumerating Active Directory Exchange Objects
reference- http://www.joeware.net/freetools/tools/adfind/, https://www.fireeye.com/blog/threat-research/2019/04/pick-six-intercepting-a-fin6-intrusion.html
Adfind tool can be used for reconnaissance in an Active directory environment. This example has been documented by ransomware actors enumerating Active Directory User Objects
reference- http://www.joeware.net/freetools/tools/adfind/, https://www.fireeye.com/blog/threat-research/2019/04/pick-six-intercepting-a-fin6-intrusion.html
Adfind tool can be used for reconnaissance in an Active directory environment. This example has been documented by ransomware actors enumerating Active Directory Groups
reference- http://www.joeware.net/freetools/tools/adfind/, https://www.fireeye.com/blog/threat-research/2019/04/pick-six-intercepting-a-fin6-intrusion.html
Adfind tool can be used for reconnaissance in an Active directory environment. The example chosen illustrates adfind used to query the local password policy.
reference- http://www.joeware.net/freetools/tools/adfind/, https://social.technet.microsoft.com/wiki/contents/articles/7535.adfind-command-examples.aspx