Pass the Hash Activity 2

Status: stable
Severity: medium
Log source: product windows, service security
Author: Dave Kennedy, Jeff Warren (method) / David Vassallo (rule)
Source: github.com/SigmaHQ/sigma

Detects the attack technique pass the hash which is used to move laterally inside the network

MITRE ATT&CK coverage

Tactic	Techniques
Lateral Movement	`T1550.002` Use Alternate Authentication Material: Pass the Hash

Event coverage

Provider	Event	Title
Security-Auditing	Event ID 4624	An account was successfully logged on.

Rule body yaml

title: Pass the Hash Activity 2
id: 8eef149c-bd26-49f2-9e5a-9b00e3af499b
status: stable
description: Detects the attack technique pass the hash which is used to move laterally inside the network
references:
    - https://github.com/iadgov/Event-Forwarding-Guidance/tree/master/Events
    - https://web.archive.org/web/20170909091934/https://blog.binarydefense.com/reliably-detecting-pass-the-hash-through-event-log-analysis
    - https://blog.stealthbits.com/how-to-detect-pass-the-hash-attacks/
author: Dave Kennedy, Jeff Warren (method) / David Vassallo (rule)
date: 2019-06-14
modified: 2022-10-05
tags:
    - attack.lateral-movement
    - attack.t1550.002
logsource:
    product: windows
    service: security
    definition: The successful use of PtH for lateral movement between workstations would trigger event ID 4624
detection:
    selection_logon3:
        EventID: 4624
        SubjectUserSid: 'S-1-0-0'
        LogonType: 3
        LogonProcessName: 'NtLmSsp'
        KeyLength: 0
    selection_logon9:
        EventID: 4624
        LogonType: 9
        LogonProcessName: 'seclogo'
    filter:
        TargetUserName: 'ANONYMOUS LOGON'
    condition: 1 of selection_* and not filter
falsepositives:
    - Administrator activity
level: medium

Stages and Predicates

Stage 0: `condition`

1 of selection_* and not filter

Stage 1: `selection_logon3`

selection_logon3:
    EventID: 4624
    SubjectUserSid: 'S-1-0-0'
    LogonType: 3
    LogonProcessName: 'NtLmSsp'
    KeyLength: 0

Stage 2: `selection_logon9`

selection_logon9:
    EventID: 4624
    LogonType: 9
    LogonProcessName: 'seclogo'

Stage 3: `not filter`

filter:
    TargetUserName: 'ANONYMOUS LOGON'

Exclusions

Top-level NOT(...) conjuncts: predicates this rule actively suppresses.

Field	Kind	Excluded values
`TargetUserName`	eq	`ANONYMOUS LOGON`

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
`KeyLength`	eq	`0`
`LogonProcessName`	eq	`NtLmSsp` corpus 2 (sigma 2) `seclogo` corpus 5 (sigma 4, elastic 1)
`LogonType`	eq	`3` corpus 40 (splunk 13, sigma 12, elastic 9, kusto 6) `9` corpus 8 (sigma 6, elastic 2)
`SubjectUserSid`	eq	`S-1-0-0`

`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)

Pass the Hash Activity 2

MITRE ATT&CK coverage

Event coverage

Rule body yaml

Stages and Predicates

Stage 0: `condition`

Stage 1: `selection_logon3`

Stage 2: `selection_logon9`

Stage 3: `not filter`

Exclusions

Indicators

Keyboard shortcuts

Search operators

Pass the Hash Activity 2

MITRE ATT&CK coverage

Event coverage

Rule body yaml

Stages and Predicates

Stage 0: condition

Stage 1: selection_logon3

Stage 2: selection_logon9

Stage 3: not filter

Exclusions

Indicators

Stage 0: `condition`

Stage 1: `selection_logon3`

Stage 2: `selection_logon9`

Stage 3: `not filter`