Link: Job recruitment lure from unsolicited sender with suspicious hosting

Severity: medium
Type: rule
Source: github.com/sublime-security/sublime-rules

Message contains job recruitment language with links to suspicious hosting services including free file hosts, subdomain hosts, or URL shorteners from an unsolicited sender.

Threat classification

Sublime's own taxonomy (not MITRE ATT&CK).

Category	Values
Attack types	Credential Phishing
Tactics and techniques	Social engineering

Event coverage

Message attribute
body
body.current_thread
body.links (collection)
sender
sender.email
subject
type

Rule body MQL

type.inbound
// commonly observed abused senders
and sender.email.domain.root_domain in (
  'hireology.com',
  'appsheet.com',
  'welcomekit.co',
  'xero.com',
  'workforce.com',
  'eventbrite.com',
  'tiscali.it',
  'on24event.com',
  'talexio.com',
  'easy.jobs',
  'suitzzedash.com',
  'awsapps.com',
  'beehiiv.com'
)
and regex.icontains(sender.display_name, 'careers|jobs')
and (
  any(body.links,
      (
        // domain contains brand, but root domain is not legit brand domain
        regex.icontains(.href_url.domain.domain,
                        '(?:ferrari|tesla|vuitton|red[ -]?bull|nike|robert[ -]?half|adidas|coca[ -]?cola|instagram|spotify|reebok|marriott|starbucks|whatsapp|ledger|uber|ikea|canva|bbdo|mango)'
        )
        and not regex.icontains(.href_url.domain.root_domain,
                                '(?:spotify|instagram|ferarri|tesla|nike|adidas|louisvuitton|redbull|roberthalf|coca-cola|reebok|marriott|starbucks|whatsapp|ledger|uber|ikea|canva|bbdo|mango)\.com'
        )
      )
      and not regex.icontains(.display_text, 'unsubscribe')
  )
  or (
    regex.icontains(subject.base,
                    '(?:ferrari|tesla|vuitton|red.?bull|nike|robert[ _-]?half|adidas|coca[ _-]?cola|instagram|spotify|reebok|marriott|starbucks|whatsapp|ray[ _-]ban|meta talent|executive talent|talent acquisition|ledger|\buber\b|\bikea\b|canva|bbdo|mango)'
    )
    or regex.icontains(sender.display_name,
                       '(?:ferrari|tesla|vuitton|red.?bull|nike|robert[ _-]?half|adidas|coca[ _-]?cola|instagram|spotify|reebok|marriott|starbucks|whatsapp|ray[ _-]ban|meta talent|executive talent|talent acquisition|ledger|\buber\b|\bikea\b|canva|bbdo|mango)'
    )
    or regex.icontains(body.current_thread.text,
                       '\b(?:ferrari|tesla|vuitton|red.?bull|nike|robert[ _-]?half|adidas|coca[ _-]?cola|spotify|reebok|marriott|starbucks|whatsapp|ray[ _-]ban|meta talent|executive talent|talent acquisition|ledger|uber|ikea|canva|bbdo|mango)\b'
    )
    or regex.icontains(sender.display_name,
                       '^[a-z-]+\s*\|\s*(?:Careers|Recruitment|hiring talent|talent connect|talents recruitment$)'
    )
    or regex.icontains(sender.display_name, '\bIG\b.*(?:Recruitment|Strategy)')
  )
)
and not regex.icontains(body.current_thread.text,
                        '\b(?:facebook|copyright|llp|legal|vip|representative|case details|summit|training|conference|apartments|live\s*stream|masterclass|tickets|b2b networking|RSVP|discover more events|Marketing e Eventos|workshop|register here|vip|delivery date)\b'
)

Detection logic

Scope: inbound message.

Message contains job recruitment language with links to suspicious hosting services including free file hosts, subdomain hosts, or URL shorteners from an unsolicited sender.

inbound message
sender.email.domain.root_domain in ('hireology.com', 'appsheet.com', 'welcomekit.co', 'xero.com', 'workforce.com', 'eventbrite.com', 'tiscali.it', 'on24event.com', 'talexio.com', 'easy.jobs', 'suitzzedash.com', 'awsapps.com', 'beehiiv.com')
sender.display_name matches 'careers|jobs'
any of:
- any of body.links where all hold:
  - all of:
    
    .href_url.domain.domain matches '(?:ferrari|tesla|vuitton|red[ -]?bull|nike|robert[ -]?half|adidas|coca[ -]?cola|instagram|spotify|reebok|marriott|starbucks|whatsapp|ledger|uber|ikea|canva|bbdo|mango)'
    not:
    
    .href_url.domain.root_domain matches '(?:spotify|instagram|ferarri|tesla|nike|adidas|louisvuitton|redbull|roberthalf|coca-cola|reebok|marriott|starbucks|whatsapp|ledger|uber|ikea|canva|bbdo|mango)\\.com'
  - not:
    
    .display_text matches 'unsubscribe'
- any of:
  - subject.base matches '(?:ferrari|tesla|vuitton|red.?bull|nike|robert[ _-]?half|adidas|coca[ _-]?cola|instagram|spotify|reebok|marriott|starbucks|whatsapp|ray[ _-]ban|meta talent|executive talent|talent acquisition|ledger|\\buber\\b|\\bikea\\b|canva|bbdo|mango)'
  - sender.display_name matches '(?:ferrari|tesla|vuitton|red.?bull|nike|robert[ _-]?half|adidas|coca[ _-]?cola|instagram|spotify|reebok|marriott|starbucks|whatsapp|ray[ _-]ban|meta talent|executive talent|talent acquisition|ledger|\\buber\\b|\\bikea\\b|canva|bbdo|mango)'
  - body.current_thread.text matches '\\b(?:ferrari|tesla|vuitton|red.?bull|nike|robert[ _-]?half|adidas|coca[ _-]?cola|spotify|reebok|marriott|starbucks|whatsapp|ray[ _-]ban|meta talent|executive talent|talent acquisition|ledger|uber|ikea|canva|bbdo|mango)\\b'
  - sender.display_name matches '^[a-z-]+\\s*\\|\\s*(?:Careers|Recruitment|hiring talent|talent connect|talents recruitment$)'
  - sender.display_name matches '\\bIG\\b.*(?:Recruitment|Strategy)'
not:
- body.current_thread.text matches '\\b(?:facebook|copyright|llp|legal|vip|representative|case details|summit|training|conference|apartments|live\\s*stream|masterclass|tickets|b2b networking|RSVP|discover more events|Marketing e Eventos|workshop|register here|vip|delivery date)\\b'

Inspects: body.current_thread.text, body.links, body.links[].display_text, body.links[].href_url.domain.domain, body.links[].href_url.domain.root_domain, sender.display_name, sender.email.domain.root_domain, subject.base, type.inbound. Sensors: regex.icontains.

Indicators matched (22)

Field	Match	Value
`sender.email.domain.root_domain`	member	`hireology.com`
`sender.email.domain.root_domain`	member	`appsheet.com`
`sender.email.domain.root_domain`	member	`welcomekit.co`
`sender.email.domain.root_domain`	member	`xero.com`
`sender.email.domain.root_domain`	member	`workforce.com`
`sender.email.domain.root_domain`	member	`eventbrite.com`
`sender.email.domain.root_domain`	member	`tiscali.it`
`sender.email.domain.root_domain`	member	`on24event.com`
`sender.email.domain.root_domain`	member	`talexio.com`
`sender.email.domain.root_domain`	member	`easy.jobs`
`sender.email.domain.root_domain`	member	`suitzzedash.com`
`sender.email.domain.root_domain`	member	`awsapps.com`

10 more

`sender.email.domain.root_domain`	member	`beehiiv.com`
`regex.icontains`	regex	`careers\|jobs`
`regex.icontains`	regex	`(?:ferrari\|tesla\|vuitton\|red[ -]?bull\|nike\|robert[ -]?half\|adidas\|coca[ -]?cola\|instagram\|spotify\|reebok\|marriott\|starbucks\|whatsapp\|ledger\|uber\|ikea\|canva\|bbdo\|mango)`
`regex.icontains`	regex	`(?:spotify\|instagram\|ferarri\|tesla\|nike\|adidas\|louisvuitton\|redbull\|roberthalf\|coca-cola\|reebok\|marriott\|starbucks\|whatsapp\|ledger\|uber\|ikea\|canva\|bbdo\|mango)\.com`
`regex.icontains`	regex	`unsubscribe`
`regex.icontains`	regex	`(?:ferrari\|tesla\|vuitton\|red.?bull\|nike\|robert[ _-]?half\|adidas\|coca[ _-]?cola\|instagram\|spotify\|reebok\|marriott\|starbucks\|whatsapp\|ray[ _-]ban\|meta talent\|executive talent\|talent acquisition\|ledger\|\buber\b\|\bikea\b\|canva\|bbdo\|mango)`
`regex.icontains`	regex	`\b(?:ferrari\|tesla\|vuitton\|red.?bull\|nike\|robert[ _-]?half\|adidas\|coca[ _-]?cola\|spotify\|reebok\|marriott\|starbucks\|whatsapp\|ray[ _-]ban\|meta talent\|executive talent\|talent acquisition\|ledger\|uber\|ikea\|canva\|bbdo\|mango)\b`
`regex.icontains`	regex	`^[a-z-]+\s\\|\s(?:Careers\|Recruitment\|hiring talent\|talent connect\|talents recruitment$)`
`regex.icontains`	regex	`\bIG\b.*(?:Recruitment\|Strategy)`
`regex.icontains`	regex	`\b(?:facebook\|copyright\|llp\|legal\|vip\|representative\|case details\|summit\|training\|conference\|apartments\|live\s*stream\|masterclass\|tickets\|b2b networking\|RSVP\|discover more events\|Marketing e Eventos\|workshop\|register here\|vip\|delivery date)\b`

`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)