New RUN Key Pointing to Suspicious Folder

 1title: New RUN Key Pointing to Suspicious Folder
 2id: 02ee49e2-e294-4d0f-9278-f5b3212fc588
 3status: experimental
 4description: Detects suspicious new RUN key element pointing to an executable in a suspicious folder
 5references:
 6    - https://www.fireeye.com/blog/threat-research/2018/08/fin7-pursuing-an-enigmatic-and-evasive-global-criminal-operation.html
 7    - https://github.com/HackTricks-wiki/hacktricks/blob/e4c7b21b8f36c97c35b7c622732b38a189ce18f7/src/windows-hardening/windows-local-privilege-escalation/privilege-escalation-with-autorun-binaries.md
 8author: Florian Roth (Nextron Systems), Markus Neis, Sander Wiebing, Swachchhanda Shrawan Poudel (Nextron Systems)
 9date: 2018-08-25
10modified: 2025-02-17
11tags:
12    - attack.persistence
13    - attack.t1547.001
14logsource:
15    category: registry_set
16    product: windows
17detection:
18    selection_target:
19        TargetObject|contains:
20            - '\Software\Microsoft\Windows\CurrentVersion\Run'
21            - '\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run'
22            - '\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run'
23    selection_suspicious_paths_1:
24        Details|contains:
25            - ':\Perflogs'
26            - :\ProgramData'
27            - ':\Windows\Temp'
28            - ':\Temp'
29            - '\AppData\Local\Temp'
30            - '\AppData\Roaming'
31            - ':\$Recycle.bin'
32            - ':\Users\Default'
33            - ':\Users\public'
34            - '%temp%'
35            - '%tmp%'
36            - '%Public%'
37            - '%AppData%'
38    selection_suspicious_paths_user_1:
39        Details|contains: ':\Users\'
40    selection_suspicious_paths_user_2:
41        Details|contains:
42            - '\Favorites'
43            - '\Favourites'
44            - '\Contacts'
45            - '\Music'
46            - '\Pictures'
47            - '\Documents'
48            - '\Photos'
49    filter_main_windows_update:
50        TargetObject|contains: '\Microsoft\Windows\CurrentVersion\RunOnce\'
51        Image|startswith: 'C:\Windows\SoftwareDistribution\Download\'
52        Details|contains|all:
53            - 'rundll32.exe '
54            - 'C:\WINDOWS\system32\advpack.dll,DelNodeRunDLL32'
55        Details|contains:
56            - '\AppData\Local\Temp\'
57            - 'C:\Windows\Temp\'
58    condition: selection_target and (selection_suspicious_paths_1 or (all of selection_suspicious_paths_user_* )) and not 1 of filter_main_*
59falsepositives:
60    - Software using weird folders for updates
61level: high