Forest Blizzard APT - File Creation Activity

 1title: Forest Blizzard APT - File Creation Activity
 2id: b92d1d19-f5c9-4ed6-bbd5-7476709dc389
 3status: experimental
 4description: |
 5    Detects the creation of specific files inside of ProgramData directory.
 6    These files were seen being created by Forest Blizzard as described by MSFT.    
 7references:
 8    - https://www.microsoft.com/en-us/security/blog/2024/04/22/analyzing-forest-blizzards-custom-post-compromise-tool-for-exploiting-cve-2022-38028-to-obtain-credentials/
 9author: Nasreddine Bencherchali (Nextron Systems)
10date: 2024-04-23
11modified: 2024-07-11
12tags:
13    - attack.defense-evasion
14    - attack.t1562.002
15logsource:
16    category: file_event
17    product: windows
18detection:
19    selection_programdata_driver_store:
20        TargetFilename|startswith:
21            - 'C:\ProgramData\Microsoft\v'
22            - 'C:\ProgramData\Adobe\v'
23            - 'C:\ProgramData\Comms\v'
24            - 'C:\ProgramData\Intel\v'
25            - 'C:\ProgramData\Kaspersky Lab\v'
26            - 'C:\ProgramData\Bitdefender\v'
27            - 'C:\ProgramData\ESET\v'
28            - 'C:\ProgramData\NVIDIA\v'
29            - 'C:\ProgramData\UbiSoft\v'
30            - 'C:\ProgramData\Steam\v'
31        TargetFilename|contains:
32            - '\prnms003.inf_'
33            - '\prnms009.inf_'
34    selection_programdata_main:
35        TargetFilename|startswith: 'C:\ProgramData\'
36    selection_programdata_files_1:
37        TargetFilename|endswith:
38            - '.save'
39            - '\doit.bat'
40            - '\execute.bat'
41            - '\servtask.bat'
42        # Hashes|contains: '7d51e5cc51c43da5deae5fbc2dce9b85c0656c465bb25ab6bd063a503c1806a9' # Uncommon this if you collect hash information inf file events
43    selection_programdata_files_2:
44        TargetFilename|contains: '\wayzgoose'
45        TargetFilename|endswith: '.dll'
46    condition: selection_programdata_driver_store or (selection_programdata_main and 1 of selection_programdata_files_*)
47falsepositives:
48    - Unlikely
49level: high