From 0e4cd397efe2561e537fb2434532a3a4e4101f54 Mon Sep 17 00:00:00 2001
From: hieuttmmo <46371125+hieuttmmo@users.noreply.github.com>
Date: Fri, 25 Oct 2019 00:14:21 +0700
Subject: [PATCH 1/6] Create new rules for T1502

---
 .../powershell_susp_profile_create.yml        | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 rules/windows/powershell/powershell_susp_profile_create.yml

diff --git a/rules/windows/powershell/powershell_susp_profile_create.yml b/rules/windows/powershell/powershell_susp_profile_create.yml
new file mode 100644
index 000000000..0bf95f4f0
--- /dev/null
+++ b/rules/windows/powershell/powershell_susp_profile_create.yml
@@ -0,0 +1,24 @@
+title: Powershell profile modify
+status: experimental
+description: 'Detects a change in profile.ps1 of Powershell profile'
+references:
+    - 'https://www.welivesecurity.com/2019/05/29/turla-powershell-usage/'
+tags:
+    - attack.persistence
+    - attack.privellege_escalation 
+    - attack.t1502
+author: HieuTT35
+date: 2019/10/24
+logsource:
+    product: windows
+    service: sysmon
+detection:
+    selection:
+        EventID: 11
+        TargetFilename|re:
+            - '.*\\My Documents\\PowerShell\\(Microsoft\.)?.*(Profile|profile)\.ps1'
+            - 'C\:\\Windows\\System32\\WindowsPowerShell\\v1\.0\\(Microsoft\.)?.*(Profile|profile)\.ps1'
+    condition: selection
+falsepositives:
+    - unknown
+level: high

From 73b10807d81b14401e6cc3a77b185d796b2c28fa Mon Sep 17 00:00:00 2001
From: hieuttmmo <46371125+hieuttmmo@users.noreply.github.com>
Date: Fri, 25 Oct 2019 00:14:39 +0700
Subject: [PATCH 2/6] Rename powershell_susp_profile_create.yml to
 powershell_suspicious_profile_create.yml

---
 ...rofile_create.yml => powershell_suspicious_profile_create.yml} | 0
 1 file changed, 0 insertions(+), 0 deletions(-)
 rename rules/windows/powershell/{powershell_susp_profile_create.yml => powershell_suspicious_profile_create.yml} (100%)

diff --git a/rules/windows/powershell/powershell_susp_profile_create.yml b/rules/windows/powershell/powershell_suspicious_profile_create.yml
similarity index 100%
rename from rules/windows/powershell/powershell_susp_profile_create.yml
rename to rules/windows/powershell/powershell_suspicious_profile_create.yml

From edb698c7f739cd71882c09c1e75e1e7e2d405da9 Mon Sep 17 00:00:00 2001
From: hieuttmmo <46371125+hieuttmmo@users.noreply.github.com>
Date: Fri, 25 Oct 2019 00:28:11 +0700
Subject: [PATCH 3/6] Update powershell_suspicious_profile_create.yml

---
 .../windows/powershell/powershell_suspicious_profile_create.yml | 2 --
 1 file changed, 2 deletions(-)

diff --git a/rules/windows/powershell/powershell_suspicious_profile_create.yml b/rules/windows/powershell/powershell_suspicious_profile_create.yml
index 0bf95f4f0..2ea391081 100644
--- a/rules/windows/powershell/powershell_suspicious_profile_create.yml
+++ b/rules/windows/powershell/powershell_suspicious_profile_create.yml
@@ -5,8 +5,6 @@ references:
     - 'https://www.welivesecurity.com/2019/05/29/turla-powershell-usage/'
 tags:
     - attack.persistence
-    - attack.privellege_escalation 
-    - attack.t1502
 author: HieuTT35
 date: 2019/10/24
 logsource:

From e86ab608f246ce5bf964ffd6f8fd11882eecc61f Mon Sep 17 00:00:00 2001
From: hieuttmmo <46371125+hieuttmmo@users.noreply.github.com>
Date: Fri, 25 Oct 2019 10:53:21 +0700
Subject: [PATCH 4/6] Update powershell_suspicious_profile_create.yml

---
 .../powershell_suspicious_profile_create.yml  | 22 ++++++++++---------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/rules/windows/powershell/powershell_suspicious_profile_create.yml b/rules/windows/powershell/powershell_suspicious_profile_create.yml
index 2ea391081..7b112b021 100644
--- a/rules/windows/powershell/powershell_suspicious_profile_create.yml
+++ b/rules/windows/powershell/powershell_suspicious_profile_create.yml
@@ -1,22 +1,24 @@
-title: Powershell profile modify
+title: 'Powershell profile modify'
 status: experimental
 description: 'Detects a change in profile.ps1 of Powershell profile'
 references:
     - 'https://www.welivesecurity.com/2019/05/29/turla-powershell-usage/'
-tags:
-    - attack.persistence
 author: HieuTT35
 date: 2019/10/24
 logsource:
     product: windows
     service: sysmon
 detection:
-    selection:
-        EventID: 11
-        TargetFilename|re:
-            - '.*\\My Documents\\PowerShell\\(Microsoft\.)?.*(Profile|profile)\.ps1'
-            - 'C\:\\Windows\\System32\\WindowsPowerShell\\v1\.0\\(Microsoft\.)?.*(Profile|profile)\.ps1'
-    condition: selection
+    event:
+      EventID: 11
+    target1:
+      TargetFilename|re: '.*\\My Documents\\PowerShell\\(Microsoft\.)?.*(Profile|profile)\.ps1'
+    target2:
+      TargetFilename|re: 'C\:\\Windows\\System32\\WindowsPowerShell\\v1\.0\\(Microsoft\.)?.*(Profile|profile)\.ps1'
+    condition: event and (target1 or target2)
 falsepositives:
-    - unknown
+    - 'System administrator create Powershell profile manually'
 level: high
+tags:
+    - attack.persistence
+    - attack.privilege_escalation

From 0c07c5ea1665142478a36d1a58e30d7386dc3b79 Mon Sep 17 00:00:00 2001
From: hieuttmmo <46371125+hieuttmmo@users.noreply.github.com>
Date: Fri, 25 Oct 2019 11:00:05 +0700
Subject: [PATCH 5/6] convention

---
 .../powershell/powershell_suspicious_profile_create.yml   | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/rules/windows/powershell/powershell_suspicious_profile_create.yml b/rules/windows/powershell/powershell_suspicious_profile_create.yml
index 7b112b021..5266c23e5 100644
--- a/rules/windows/powershell/powershell_suspicious_profile_create.yml
+++ b/rules/windows/powershell/powershell_suspicious_profile_create.yml
@@ -1,8 +1,8 @@
-title: 'Powershell profile modify'
+title: Powershell profile modify
 status: experimental
-description: 'Detects a change in profile.ps1 of Powershell profile'
+description: Detects a change in profile.ps1 of Powershell profile
 references:
-    - 'https://www.welivesecurity.com/2019/05/29/turla-powershell-usage/'
+    - https://www.welivesecurity.com/2019/05/29/turla-powershell-usage/
 author: HieuTT35
 date: 2019/10/24
 logsource:
@@ -17,7 +17,7 @@ detection:
       TargetFilename|re: 'C\:\\Windows\\System32\\WindowsPowerShell\\v1\.0\\(Microsoft\.)?.*(Profile|profile)\.ps1'
     condition: event and (target1 or target2)
 falsepositives:
-    - 'System administrator create Powershell profile manually'
+    - System administrator create Powershell profile manually
 level: high
 tags:
     - attack.persistence

From f4928e95bc059fcefa2babf0da780d645fc6fbea Mon Sep 17 00:00:00 2001
From: Florian Roth <venom14@gmail.com>
Date: Fri, 3 Apr 2020 09:36:17 +0200
Subject: [PATCH 6/6] Update powershell_suspicious_profile_create.yml

---
 .../powershell_suspicious_profile_create.yml     | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/rules/windows/powershell/powershell_suspicious_profile_create.yml b/rules/windows/powershell/powershell_suspicious_profile_create.yml
index 5266c23e5..de6a3897b 100644
--- a/rules/windows/powershell/powershell_suspicious_profile_create.yml
+++ b/rules/windows/powershell/powershell_suspicious_profile_create.yml
@@ -1,20 +1,26 @@
-title: Powershell profile modify
+title: Powershell Profile.ps1 Modification
+id: b5b78988-486d-4a80-b991-930eff3ff8bf
 status: experimental
-description: Detects a change in profile.ps1 of Powershell profile
+description: Detects a change in profile.ps1 of the Powershell profile
 references:
     - https://www.welivesecurity.com/2019/05/29/turla-powershell-usage/
 author: HieuTT35
 date: 2019/10/24
+modified: 2020/04/03
 logsource:
     product: windows
     service: sysmon
 detection:
     event:
-      EventID: 11
+        EventID: 11
     target1:
-      TargetFilename|re: '.*\\My Documents\\PowerShell\\(Microsoft\.)?.*(Profile|profile)\.ps1'
+        TargetFilename|contains|all: 
+            - '\My Documents\PowerShell\'
+            - '\profile.ps1'
     target2:
-      TargetFilename|re: 'C\:\\Windows\\System32\\WindowsPowerShell\\v1\.0\\(Microsoft\.)?.*(Profile|profile)\.ps1'
+        TargetFilename|contains|all: 
+            - 'C:\Windows\System32\WindowsPowerShell\v1.0\'
+            - '\profile.ps1'
     condition: event and (target1 or target2)
 falsepositives:
     - System administrator create Powershell profile manually