From 19092d82f84794f0e63f668b101e25e3dd2c9aea Mon Sep 17 00:00:00 2001
From: johnk3r <johnatan2camargo@gmail.com>
Date: Wed, 14 Jun 2023 10:05:08 -0300
Subject: [PATCH 1/3] Create quasar-rat-c2.yaml

---
 ssl/c2/quasar-rat-c2.yaml | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 ssl/c2/quasar-rat-c2.yaml

diff --git a/ssl/c2/quasar-rat-c2.yaml b/ssl/c2/quasar-rat-c2.yaml
new file mode 100644
index 0000000000..ee6e523208
--- /dev/null
+++ b/ssl/c2/quasar-rat-c2.yaml
@@ -0,0 +1,29 @@
+id: quasar-rat-c2
+
+info:
+  name: Detect SSL Certificate Quasar RAT C2
+  author: johnk3r
+  severity: info
+  description: |
+    Quasar RAT is a malware family written in .NET which is used by a variety of attackers. The malware is fully functional and open source, and is often packed to make analysis of the source more difficult.
+  reference: |
+    https://malpedia.caad.fkie.fraunhofer.de/details/win.quasar_rat
+  metadata:
+    max-request: 1
+    verified: "true"
+    shodan-query: ssl.cert.subject.cn:"Quasar Server CA"
+  tags: c2,ir,osint,malware
+
+ssl:
+  - address: "{{Host}}:{{Port}}"
+
+    matchers:
+      - type: word
+        part: issuer_cn
+        words:
+          - "Quasar Server CA"
+
+    extractors:
+      - type: json
+        json:
+          - " .issuer_cn"

From 886e444e3d46964eb151a026cd5bafd8fb0b352a Mon Sep 17 00:00:00 2001
From: pussycat0x <65701233+pussycat0x@users.noreply.github.com>
Date: Wed, 14 Jun 2023 20:01:09 +0530
Subject: [PATCH 2/3] minor -update

---
 ssl/c2/quasar-rat-c2.yaml | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/ssl/c2/quasar-rat-c2.yaml b/ssl/c2/quasar-rat-c2.yaml
index ee6e523208..be1e836a1e 100644
--- a/ssl/c2/quasar-rat-c2.yaml
+++ b/ssl/c2/quasar-rat-c2.yaml
@@ -2,7 +2,7 @@ id: quasar-rat-c2
 
 info:
   name: Detect SSL Certificate Quasar RAT C2
-  author: johnk3r
+  author: johnk3r,pussycat0x
   severity: info
   description: |
     Quasar RAT is a malware family written in .NET which is used by a variety of attackers. The malware is fully functional and open source, and is often packed to make analysis of the source more difficult.
@@ -12,7 +12,8 @@ info:
     max-request: 1
     verified: "true"
     shodan-query: ssl.cert.subject.cn:"Quasar Server CA"
-  tags: c2,ir,osint,malware
+    censys-query: 'services.tls.certificates.leaf_data.subject.common_name: {"Orcus Server","OrcusServerCertificate"}'
+  tags: c2,ir,osint,malware,quasar,rat
 
 ssl:
   - address: "{{Host}}:{{Port}}"
@@ -22,6 +23,8 @@ ssl:
         part: issuer_cn
         words:
           - "Quasar Server CA"
+          - "OrcusServerCertificate"
+        condition: or  
 
     extractors:
       - type: json

From 579fd894ae9d5c5e5e96e17e75f4912d6a2329a0 Mon Sep 17 00:00:00 2001
From: pussycat0x <65701233+pussycat0x@users.noreply.github.com>
Date: Wed, 14 Jun 2023 20:07:08 +0530
Subject: [PATCH 3/3] lint & name - fix

---
 ssl/c2/quasar-rat-c2.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ssl/c2/quasar-rat-c2.yaml b/ssl/c2/quasar-rat-c2.yaml
index be1e836a1e..2bfbb82a05 100644
--- a/ssl/c2/quasar-rat-c2.yaml
+++ b/ssl/c2/quasar-rat-c2.yaml
@@ -1,7 +1,7 @@
 id: quasar-rat-c2
 
 info:
-  name: Detect SSL Certificate Quasar RAT C2
+  name: Quasar RAT C2 SSL Certificate - Detect
   author: johnk3r,pussycat0x
   severity: info
   description: |
@@ -24,7 +24,7 @@ ssl:
         words:
           - "Quasar Server CA"
           - "OrcusServerCertificate"
-        condition: or  
+        condition: or
 
     extractors:
       - type: json