Wab/Wabmig Unusual Parent Or Child Processes

 1title: Wab/Wabmig Unusual Parent Or Child Processes
 2id: 63d1ccc0-2a43-4f4b-9289-361b308991ff
 3status: test
 4description: Detects unusual parent or children of the wab.exe (Windows Contacts) and Wabmig.exe (Microsoft Address Book Import Tool) processes as seen being used with bumblebee activity
 5references:
 6    - https://thedfirreport.com/2022/08/08/bumblebee-roasts-its-way-to-domain-admin/
 7    - https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/bumblebee-loader-cybercrime
 8    - https://thedfirreport.com/2022/09/26/bumblebee-round-two/
 9author: Nasreddine Bencherchali (Nextron Systems)
10date: 2022-08-12
11modified: 2022-09-27
12tags:
13    - attack.defense-evasion
14    - attack.execution
15logsource:
16    category: process_creation
17    product: windows
18detection:
19    selection_parent:
20        ParentImage|endswith:
21            # Add more if known
22            - \WmiPrvSE.exe
23            - \svchost.exe
24            - \dllhost.exe
25        Image|endswith:
26            - '\wab.exe'
27            - '\wabmig.exe' # (Microsoft Address Book Import Tool)
28    selection_child:
29        # You can add specific suspicious child processes (such as cmd, powershell...) to increase the accuracy
30        ParentImage|endswith:
31            - '\wab.exe'
32            - '\wabmig.exe' # (Microsoft Address Book Import Tool)
33    condition: 1 of selection_*
34falsepositives:
35    - Unknown
36level: high

References

• BumbleBee Roasts Its Way to Domain Admin

  

  In this intrusion from April 2022, the threat actors used BumbleBee as the initial access vector. BumbleBee is a malware loader that was first reported by Google Threat Analysis Group in March 2022…

  
  Read More

• Bumblebee: New Loader Rapidly Assuming Central Position in Cyber-crime Ecosystem

  

  New malware has links with multiple threat actors, including several high-profile ransomware operations.

  
  Read More

• BumbleBee: Round Two

  

  In this intrusion from May 2022, the threat actors used BumbleBee as the initial access vector. BumbleBee has been identified as an initial access vector utilized by several ransomware affiliates. …

  
  Read More

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