Suspicious Remote Child Process From Outlook

calendar Aug 12, 2024 · attack.execution attack.t1059 attack.t1202  ·
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Detects a suspicious child process spawning from Outlook where the image is located in a remote location (SMB/WebDav shares).

Sigma rule (View on GitHub)

 1title: Suspicious Remote Child Process From Outlook
 2id: e212d415-0e93-435f-9e1a-f29005bb4723
 3related:
 4    - id: 208748f7-881d-47ac-a29c-07ea84bf691d # Outlook Child Processes
 5      type: similar
 6status: test
 7description: Detects a suspicious child process spawning from Outlook where the image is located in a remote location (SMB/WebDav shares).
 8references:
 9    - https://github.com/sensepost/ruler
10    - https://www.fireeye.com/blog/threat-research/2018/12/overruled-containing-a-potentially-destructive-adversary.html
11    - https://speakerdeck.com/heirhabarov/hunting-for-persistence-via-microsoft-exchange-server-or-outlook?slide=49
12author: Markus Neis, Nasreddine Bencherchali (Nextron Systems)
13date: 2018-12-27
14modified: 2023-02-09
15tags:
16    - attack.execution
17    - attack.t1059
18    - attack.t1202
19logsource:
20    category: process_creation
21    product: windows
22detection:
23    selection:
24        ParentImage|endswith: '\outlook.exe'
25        Image|startswith: '\\\\'
26    condition: selection
27falsepositives:
28    - Unknown
29level: high

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