diff --git a/rules-emerging-threats/2023/Exploits/MOVEit-Transfer-Unknown-Exploit/README.md b/rules-emerging-threats/2023/Exploits/CVE-2023-34362-MOVEit-Transfer-Exploit/README.md similarity index 83% rename from rules-emerging-threats/2023/Exploits/MOVEit-Transfer-Unknown-Exploit/README.md rename to rules-emerging-threats/2023/Exploits/CVE-2023-34362-MOVEit-Transfer-Exploit/README.md index 1440b16a8..66f3d6889 100644 --- a/rules-emerging-threats/2023/Exploits/MOVEit-Transfer-Unknown-Exploit/README.md +++ b/rules-emerging-threats/2023/Exploits/CVE-2023-34362-MOVEit-Transfer-Exploit/README.md @@ -14,4 +14,5 @@ You can find more information on the threat in the following articles: ## Rules -- [Potential MOVEit Transfer Exploitation](./file_event_win_exploit_other_moveit_transfer.yml) +- [Potential MOVEit Transfer CVE-2023-34362 Exploitation](./file_event_win_exploit_cve_2023_34362_moveit_transfer.yml) +- [MOVEit CVE-2023-34362 Exploitation Attempt - Potential Web Shell Request](web_cve_2023_34362_known_payload_request.yml.yml) diff --git a/rules-emerging-threats/2023/Exploits/MOVEit-Transfer-Unknown-Exploit/file_event_win_exploit_other_moveit_transfer.yml b/rules-emerging-threats/2023/Exploits/CVE-2023-34362-MOVEit-Transfer-Exploit/file_event_win_exploit_cve_2023_34362_moveit_transfer.yml similarity index 63% rename from rules-emerging-threats/2023/Exploits/MOVEit-Transfer-Unknown-Exploit/file_event_win_exploit_other_moveit_transfer.yml rename to rules-emerging-threats/2023/Exploits/CVE-2023-34362-MOVEit-Transfer-Exploit/file_event_win_exploit_cve_2023_34362_moveit_transfer.yml index bc3a079fe..3bf6ec8f2 100644 --- a/rules-emerging-threats/2023/Exploits/MOVEit-Transfer-Unknown-Exploit/file_event_win_exploit_other_moveit_transfer.yml +++ b/rules-emerging-threats/2023/Exploits/CVE-2023-34362-MOVEit-Transfer-Exploit/file_event_win_exploit_cve_2023_34362_moveit_transfer.yml @@ -1,9 +1,7 @@ -title: Potential MOVEit Transfer Exploitation +title: Potential MOVEit Transfer CVE-2023-34362 Exploitation id: c3b2a774-3152-4989-83c1-7afc48fd1599 status: experimental -description: | - Detects the creation of files with unexpected extensions in the web root folder of the MOVEit Transfer service. - Reports mentioned uncommon file types in the "wwwroot" folder as a sign of potential compromise. Attackers used that folder as a staging directory for the exfiltration. +description: Detects file indicators of potential exploitation of MOVEit CVE-2023-34362. references: - https://www.bleepingcomputer.com/news/security/new-moveit-transfer-zero-day-mass-exploited-in-data-theft-attacks/ - https://community.progress.com/s/article/MOVEit-Transfer-Critical-Vulnerability-31May2023 @@ -11,6 +9,7 @@ references: - https://www.reddit.com/r/sysadmin/comments/13wxuej/comment/jmhdg55/ author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems) date: 2023/06/01 +modified: 2023/06/03 tags: - attack.initial_access - attack.t1190 @@ -34,19 +33,24 @@ detection: - '.zip' selection_known_ioc: TargetFilename|endswith: + - '\MOVEit Transfer\wwwroot\_human2.aspx.lnk' + - '\MOVEit Transfer\wwwroot\_human2.aspx' + - '\MOVEit Transfer\wwwroot\human2.aspx.lnk' - '\MOVEit Transfer\wwwroot\human2.aspx' + - '\MOVEitTransfer\wwwroot\_human2.aspx.lnk' + - '\MOVEitTransfer\wwwroot\_human2.aspx' + - '\MOVEitTransfer\wwwroot\human2.aspx.lnk' - '\MOVEitTransfer\wwwroot\human2.aspx' + # Uncomment selection if you wanna threat hunt for additional artifacts + #selection_cmdline: + # TargetFilename|contains: ':\Windows\TEMP\' + # TargetFilename|endswith: '.cmdline' selection_compiled_asp: CreationUtcTime|startswith: - - '2023-05-26 ' - - '2023-05-27 ' - - '2023-05-28 ' - - '2023-05-29 ' - - '2023-05-30 ' - - '2023-05-31 ' - - '2023-06-01 ' - - '2023-06-02 ' - - '2023-06-03 ' + - '2023-03- ' + - '2023-04- ' + - '2023-05- ' + - '2023-06- ' TargetFilename|contains|all: - '\Windows\Microsoft.net\Framework64\v' - '\Temporary ASP.NET Files\' @@ -54,5 +58,5 @@ detection: TargetFilename|endswith: '.dll' condition: 1 of selection_* falsepositives: - - Unlikely + - To avoid FP, this rule should only be applied on MOVEit servers. level: high diff --git a/rules-emerging-threats/2023/Exploits/CVE-2023-34362-MOVEit-Transfer-Exploit/web_cve_2023_34362_known_payload_request.yml.yml b/rules-emerging-threats/2023/Exploits/CVE-2023-34362-MOVEit-Transfer-Exploit/web_cve_2023_34362_known_payload_request.yml.yml new file mode 100644 index 000000000..ed85bf8d7 --- /dev/null +++ b/rules-emerging-threats/2023/Exploits/CVE-2023-34362-MOVEit-Transfer-Exploit/web_cve_2023_34362_known_payload_request.yml.yml @@ -0,0 +1,21 @@ +title: MOVEit CVE-2023-34362 Exploitation Attempt - Potential Web Shell Request +id: 435e41f2-48eb-4c95-8a2b-ed24b50ec30b +status: experimental +description: Detects get requests to specific files used during the exploitation of MOVEit CVE-2023-34362 +references: + - https://community.progress.com/s/article/MOVEit-Transfer-Critical-Vulnerability-31May2023 + - https://www.mandiant.com/resources/blog/zero-day-moveit-data-theft +author: Nasreddine Bencherchali (Nextron Systems) +date: 2023/06/03 +logsource: + category: webserver +detection: + selection: + cs-method: 'GET' + cs-uri-stem: + - '/human2.aspx' + - '/_human2.aspx' + condition: selection +falsepositives: + - Unlikely +level: high