diff --git a/salt/grains/core.py b/salt/grains/core.py
index 710c57f28f..124d7c25cd 100644
--- a/salt/grains/core.py
+++ b/salt/grains/core.py
@@ -1764,6 +1764,7 @@ def _derive_os_grain(osfullname, os_id=None):
 # post-_OS_NAME_MAP. If your system is having trouble with detection, please
 # make sure that the 'os' grain is capitalized and working correctly first.
 _OS_FAMILY_MAP = {
+    "ALT": "RedHat",
     "Ubuntu": "Debian",
     "Fedora": "RedHat",
     "Chapeau": "RedHat",
@@ -2218,6 +2219,8 @@ def _legacy_linux_distribution_data(grains, os_release, lsb_has_error):
                     cpe = _parse_cpe_name(os_release["CPE_NAME"])
                     if not cpe:
                         log.error("Broken CPE_NAME format in /etc/os-release!")
+                    elif cpe.get('vendor', '').lower() == 'alt':
+                        grains['os'] = 'ALT'
                     elif cpe.get("vendor", "").lower() in ["suse", "opensuse"]:
                         grains["os"] = "SUSE"
                         # openSUSE `osfullname` grain normalization
@@ -2352,6 +2355,8 @@ def _legacy_linux_distribution_data(grains, os_release, lsb_has_error):
         grains["oscodename"] = oscodename
     if "os" not in grains:
         grains["os"] = _derive_os_grain(grains["osfullname"])
+    if grains["lsb_distrib_id"] != grains["os"]:
+        grains["os"] = grains["lsb_distrib_id"]
     # this assigns family names based on the os name
     # family defaults to the os name if not found
     grains["os_family"] = _OS_FAMILY_MAP.get(grains["os"], grains["os"])