Codecov rule

yara/mal_codecov_hack.yar

@@ -0,0 +1,16 @@
+
+rule APT_SH_CodeCov_Hack_Apr21_1 {
+   meta:
+      description = "Detects manipulated Codecov bash uploader tool that has been manipulated by an unknown actor during March / April 2021"
+      author = "Florian Roth"
+      reference = "https://about.codecov.io/security-update/"
+      date = "2021-04-16"
+   strings:
+      $a1 = "Global report uploading tool for Codecov"
+
+      $s1 = "curl -sm 0.5 -d"
+   condition:
+      uint16(0) == 0x2123 and
+      filesize < 70KB and
+      all of them
+}