Writing Of Malicious Files To The Fonts Folder

 1title: Writing Of Malicious Files To The Fonts Folder
 2id: ae9b0bd7-8888-4606-b444-0ed7410cb728
 3status: test
 4description: Monitors for the hiding possible malicious files in the C:\Windows\Fonts\ location. This folder doesn't require admin privillege to be written and executed from.
 5references:
 6    - https://thedfirreport.com/2020/04/20/sqlserver-or-the-miner-in-the-basement/
 7author: Sreeman
 8date: 2020-04-21
 9modified: 2022-03-08
10tags:
11    - attack.t1211
12    - attack.t1059
13    - attack.defense-evasion
14    - attack.persistence
15    - attack.execution
16logsource:
17    product: windows
18    category: process_creation
19detection:
20    selection_1:
21        CommandLine|contains:
22            - 'echo'
23            - 'copy'
24            - 'type'
25            - 'file createnew'
26            - 'cacls'
27    selection_2:
28        CommandLine|contains: 'C:\Windows\Fonts\'
29    selection_3:
30        CommandLine|contains:
31            - '.sh'
32            - '.exe'
33            - '.dll'
34            - '.bin'
35            - '.bat'
36            - '.cmd'
37            - '.js'
38            - '.msh'
39            - '.reg'
40            - '.scr'
41            - '.ps'
42            - '.vb'
43            - '.jar'
44            - '.pl'
45            - '.inf'
46            - '.cpl'
47            - '.hta'
48            - '.msi'
49            - '.vbs'
50    condition: all of selection_*
51falsepositives:
52    - Unknown
53level: medium