PrinterNightmare Mimikatz Driver Name

Status: test
Severity: critical
Log source: product windows, category registry_event
Author: Markus Neis, @markus_neis, Florian Roth
Source: github.com/SigmaHQ/sigma

Detects static QMS 810 and mimikatz driver name used by Mimikatz as exploited in CVE-2021-1675 and CVE-2021-34527

MITRE ATT&CK coverage

Tactic	Techniques
Execution	`T1204` User Execution

Event coverage

Provider	Event	Title
Sysmon	Event ID 12	RegistryEvent (Object create and delete)
Sysmon	Event ID 13	RegistryEvent (Value Set)
Sysmon	Event ID 14	RegistryEvent (Key and Value Rename)

Rule body yaml

title: PrinterNightmare Mimikatz Driver Name
id: ba6b9e43-1d45-4d3c-a504-1043a64c8469
status: test
description: Detects static QMS 810 and mimikatz driver name used by Mimikatz as exploited in CVE-2021-1675 and CVE-2021-34527
references:
    - https://github.com/gentilkiwi/mimikatz/commit/c21276072b3f2a47a21e215a46962a17d54b3760
    - https://www.lexjansen.com/sesug/1993/SESUG93035.pdf
    - https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-rprn/4464eaf0-f34f-40d5-b970-736437a21913
    - https://nvd.nist.gov/vuln/detail/cve-2021-1675
    - https://nvd.nist.gov/vuln/detail/cve-2021-34527
author: Markus Neis, @markus_neis, Florian Roth
date: 2021-07-04
modified: 2023-06-12
tags:
    - attack.execution
    - attack.t1204
    - cve.2021-1675
    - cve.2021-34527
    - detection.emerging-threats
logsource:
    product: windows
    category: registry_event
detection:
    selection:
        TargetObject|contains:
            - '\Control\Print\Environments\Windows x64\Drivers\Version-3\QMS 810\'
            - '\Control\Print\Environments\Windows x64\Drivers\Version-3\mimikatz'
    selection_alt:
        TargetObject|contains|all:
            - 'legitprinter'
            - '\Control\Print\Environments\Windows'
    selection_print:
        TargetObject|contains:
            - '\Control\Print\Environments'
            - '\CurrentVersion\Print\Printers'
    selection_kiwi:
        TargetObject|contains:
            - 'Gentil Kiwi'
            - 'mimikatz printer'
            - 'Kiwi Legit Printer'
    condition: selection or selection_alt or (selection_print and selection_kiwi)
falsepositives:
    - Legitimate installation of printer driver QMS 810, Texas Instruments microLaser printer (unlikely)
level: critical

Stages and Predicates

Stage 0: `condition`

selection or selection_alt or (selection_print and selection_kiwi)

Stage 1: `selection`

selection:
    TargetObject|contains:
        - '\Control\Print\Environments\Windows x64\Drivers\Version-3\QMS 810\'
        - '\Control\Print\Environments\Windows x64\Drivers\Version-3\mimikatz'

Stage 2: `selection_alt`

selection_alt:
    TargetObject|contains|all:
        - 'legitprinter'
        - '\Control\Print\Environments\Windows'

Stage 3: `selection_print`

selection_print:
    TargetObject|contains:
        - '\Control\Print\Environments'
        - '\CurrentVersion\Print\Printers'

Stage 4: `selection_kiwi`

selection_kiwi:
    TargetObject|contains:
        - 'Gentil Kiwi'
        - 'mimikatz printer'
        - 'Kiwi Legit Printer'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

Field	Kind	Values
`TargetObject`	match	`Gentil Kiwi` `Kiwi Legit Printer` `\Control\Print\Environments` `\Control\Print\Environments\Windows` `\Control\Print\Environments\Windows x64\Drivers\Version-3\QMS 810\` `\Control\Print\Environments\Windows x64\Drivers\Version-3\mimikatz` `\CurrentVersion\Print\Printers` `legitprinter` `mimikatz printer`

`j` / `k`	Scroll down / up
`d` / `u`	Half-page down / up
`gg` / `G`	Top / bottom
`h` / `l`	History back / forward
`f`	Follow link (`Shift` = new tab)
`/`	Focus search
`?`	Toggle this help
`↑` / `↓`	Navigate search results
`Enter`	Open highlighted result
`Esc`	Close results / dialog

`type:`	`events` / `rules` / `providers`
`vendor:`	`sigma` / `elastic` / `splunk` / `kusto` / `chronicle` (vendor name alone also works: `sigma:`, `kql:`, `secops:`…)
`tactic:`	TA-id, slug, or name: `credential_access`, `TA0006`
`technique:`	technique or sub-technique ID: `T1003`, `T1003.001` (alias `tech:`)
`severity:`	`critical` / `high` / `medium` / `low` / `informational` (alias `sev:`)
`risk_score`	Numeric comparison on the Elastic risk score (0 to 100): `risk_score>50`, `risk_score<=20`, `risk_score=99` (alias `risk`; Elastic rules only)
`stages:`	Rules with exactly N pipeline stages
`correlation:`	`single_event` / `sequence` / `alternatives` / `alternatives_cross_log` / `all_required` / `correlated`
`with:`	Co-occurrence event-id; stacks (`with:4624 with:4769`) to require all, while a comma list in one occurrence (`with:4624,4769`) is an either-or group. Implies multi-event
`like:`	Structural neighbors of a rule slug (equivalents + subsumption stricter / broader): `like:comsvcs_lsass_memory_dump-splunk-sysmon`
`groupby:`	Entity-grouping substring match against `group_by_keys`: `groupby:user`, `groupby:host`
`uses:`	Rules whose predicate tree touches the field (any kind, any value): `uses:CommandLine`
`excludes:`	Rules with top-level `not()` clauses on the field (FP whitelists): `excludes:ParentImage`
`field:` / `value:`	Predicate search; narrows rule cards to those with a matching leaf and drives the indicator tier. Unquoted = substring, wildcards allowed (`value:mimikatz`)
`indicator:`	Shorthand for `field:F value:V`: `indicator:Image=*\powershell.exe`
`kind:`	Filter by predicate kind. Narrows rule cards to those carrying a matching predicate leaf (`vendor:elastic kind:cidr_match`) and drives the indicator tier: `contains` / `starts_with` / `ends_with` / `regex` / `cidr` / `eq` / `in` … (operator aliases `op:`/`match:`)
`has:` / `no:`	`sample`, `field`, `notes`, `refs`, `trace`, `thirdparty`, `rule`, `pattern`, `timewindow`, `threshold`, `newterms`, `sigma`/`elastic`/`splunk`/`kusto`/`chronicle`
`-op:val`	Exclude matches; works on most operators but not `type:`/`like:`/`has:`/`no:` (use `no:<flag>` to exclude a rule flag): `tactic:execution -vendor:splunk`. Standalone `-kind:`/`-field:`/`-value:` drop every rule carrying a matching predicate leaf (`type:rules -kind:is_null`)
`field:"…"` / `value:"…"`	Quoted value = anchored exact match (also allows spaces): `value:"net user"`
`a,b`	Comma = OR inside one operator (`vendor:sigma,elastic`, `severity:high,critical`); repeating a facet merges the same way. `field:`/`value:` never split (literal commas)
`vendors:` / `stage:`	Singular and plural spellings fold to the canonical operator and value: `tactics:` = `tactic:`, `type:event` = `type:events`, `correlation:sequences` = `correlation:sequence`, `has:thresholds` = `has:threshold`
`"quoted phrase"`	Exact-match a multi-word phrase (free text)

PrinterNightmare Mimikatz Driver Name

MITRE ATT&CK coverage

Event coverage

Rule body yaml

Stages and Predicates

Stage 0: `condition`

Stage 1: `selection`

Stage 2: `selection_alt`

Stage 3: `selection_print`

Stage 4: `selection_kiwi`

Indicators

Keyboard shortcuts

Search operators

PrinterNightmare Mimikatz Driver Name

MITRE ATT&CK coverage

Event coverage

Rule body yaml

Stages and Predicates

Stage 0: condition

Stage 1: selection

Stage 2: selection_alt

Stage 3: selection_print

Stage 4: selection_kiwi

Indicators

Stage 0: `condition`

Stage 1: `selection`

Stage 2: `selection_alt`

Stage 3: `selection_print`

Stage 4: `selection_kiwi`