Merge pull request #4360 from phantinuss/master

fix: FPs in rules
SigmaHQ · Jul 25, 2023 · 202b79e · 202b79e
2 parents d79fdf6 + 250d6c0
commit 202b79e
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diff --git a/rules/windows/process_creation/proc_creation_win_net_use_mount_internet_share.yml b/rules/windows/process_creation/proc_creation_win_net_use_mount_internet_share.yml
@@ -6,6 +6,7 @@ references:
     - https://drive.google.com/file/d/1lKya3_mLnR3UQuCoiYruO3qgu052_iS_/view
 author: Nasreddine Bencherchali (Nextron Systems)
 date: 2023/02/21
+modified: 2023/07/25
 tags:
     - attack.lateral_movement
     - attack.t1021.002
@@ -21,7 +22,7 @@ detection:
             - 'net.exe'
             - 'net1.exe'
     selection_cli:
-        CommandLine|contains:
+        CommandLine|contains|all:
             - ' use '
             - ' http'
     condition: all of selection_*

diff --git a/rules/windows/process_creation/proc_creation_win_vmware_vmtoolsd_susp_child_process.yml b/rules/windows/process_creation/proc_creation_win_vmware_vmtoolsd_susp_child_process.yml
@@ -7,7 +7,7 @@ references:
     - https://user-images.githubusercontent.com/61026070/136518004-b68cce7d-f9b8-4e9a-9b7b-53b1568a9a94.png
 author: bohops, Bhabesh Raj
 date: 2021/10/08
-modified: 2022/07/14
+modified: 2023/07/25
 tags:
     - attack.execution
     - attack.persistence
@@ -44,6 +44,12 @@ detection:
             - '\VMware\VMware Tools\poweroff-vm-default.bat'
             - '\VMware\VMware Tools\resume-vm-default.bat'
             - '\VMware\VMware Tools\suspend-vm-default.bat'
+    filter_main_empty:
+        Image|endswith: '\cmd.exe'
+        CommandLine: ''
+    filter_main_null:
+        Image|endswith: '\cmd.exe'
+        CommandLine: null
     condition: all of selection* and not 1 of filter_main_*
 falsepositives:
     - Legitimate use by VM administrator