New DLL Registered Via Odbcconf.EXE
Detects execution of "odbcconf" with "REGSVR" in order to register a new DLL (equivalent to running regsvr32). Attackers abuse this to install and run malicious DLLs.
Sigma rule (View on GitHub)
1title: New DLL Registered Via Odbcconf.EXE
2id: 9f0a8bf3-a65b-440a-8c1e-5cb1547c8e70
3related:
4 - id: ba4cfc11-d0fa-4d94-bf20-7c332c412e76
5 type: similar
6status: test
7description: Detects execution of "odbcconf" with "REGSVR" in order to register a new DLL (equivalent to running regsvr32). Attackers abuse this to install and run malicious DLLs.
8references:
9 - https://learn.microsoft.com/en-us/sql/odbc/odbcconf-exe?view=sql-server-ver16
10 - https://lolbas-project.github.io/lolbas/Binaries/Odbcconf/
11 - https://redcanary.com/blog/raspberry-robin/
12 - https://web.archive.org/web/20191023232753/https://twitter.com/Hexacorn/status/1187143326673330176
13 - https://www.hexacorn.com/blog/2020/08/23/odbcconf-lolbin-trifecta/
14 - https://www.trendmicro.com/en_us/research/17/h/backdoor-carrying-emails-set-sights-on-russian-speaking-businesses.html
15author: Kirill Kiryanov, Beyu Denis, Daniil Yugoslavskiy, oscd.community, Nasreddine Bencherchali (Nextron Systems)
16date: 2023-05-22
17tags:
18 - attack.defense-evasion
19 - attack.t1218.008
20logsource:
21 category: process_creation
22 product: windows
23detection:
24 selection_img:
25 - Image|endswith: '\odbcconf.exe'
26 - OriginalFileName: 'odbcconf.exe'
27 selection_cli:
28 # Note: The "/A" flag is not required to call a specific action
29 CommandLine|contains|all:
30 - 'REGSVR '
31 - '.dll'
32 condition: all of selection_*
33falsepositives:
34 - Legitimate DLLs being registered via "odbcconf" will generate false positives. Investigate the path of the DLL and its content to determine if the action is authorized.
35level: medium
References
-
Odbcconf.exe is a living-of-the-land file containing unexpected functionality that can be abused by attackers; this page lists all its use cases.
Read More -
Raspberry Robin is a worm spread by external drives that leverages Windows Installer to download a malicious DLL.
Read More -
I posted about ODBCConf before and then posted again on Twitter. The Twitter bit was about REGSVR: odbcconf.exe /a {REGSVR c:\test\test.dll} – loads a DLL At that time I looked at other ACTIONS acc...
Read More -
A malicious email campaign against Russian-speaking enterprises is employing a combination of exploits and Windows components to deliver a new backdoor that allows attackers to take over the affected system
Read More
Related rules
- Driver/DLL Installation Via Odbcconf.EXE
- Odbcconf.EXE Suspicious DLL Location
- Potentially Suspicious DLL Registered Via Odbcconf.EXE
- Response File Execution Via Odbcconf.EXE
- Suspicious Driver/DLL Installation Via Odbcconf.EXE