diff --git a/app/vmagent/remotewrite/client.go b/app/vmagent/remotewrite/client.go
index d50eeea31..c888092a4 100644
--- a/app/vmagent/remotewrite/client.go
+++ b/app/vmagent/remotewrite/client.go
@@ -56,10 +56,12 @@ var (
 
 	awsUseSigv4 = flagutil.NewArrayBool("remoteWrite.aws.useSigv4", "Enables SigV4 request signing for the corresponding -remoteWrite.url. "+
 		"It is expected that other -remoteWrite.aws.* command-line flags are set if sigv4 request signing is enabled")
-	awsRegion    = flagutil.NewArray("remoteWrite.aws.region", "Optional AWS region to use for the corresponding -remoteWrite.url if -remoteWrite.aws.useSigv4 is set")
-	awsRoleARN   = flagutil.NewArray("remoteWrite.aws.roleARN", "Optional AWS roleARN to use for the corresponding -remoteWrite.url if -remoteWrite.aws.useSigv4 is set")
-	awsAccessKey = flagutil.NewArray("remoteWrite.aws.accessKey", "Optional AWS AccessKey to use for the corresponding -remoteWrite.url if -remoteWrite.aws.useSigv4 is set")
-	awsService   = flagutil.NewArray("remoteWrite.aws.service", "Optional AWS Service to use for the corresponding -remoteWrite.url if -remoteWrite.aws.useSigv4 is set. "+
+	awsEC2Endpoint = flagutil.NewArray("remoteWrite.aws.ec2Endpoint", "Optional AWS EC2 API endpoint to use for the corresponding -remoteWrite.url if -remoteWrite.aws.useSigv4 is set")
+	awsSTSEndpoint = flagutil.NewArray("remoteWrite.aws.stsEndpoint", "Optional AWS STS API endpoint to use for the corresponding -remoteWrite.url if -remoteWrite.aws.useSigv4 is set")
+	awsRegion      = flagutil.NewArray("remoteWrite.aws.region", "Optional AWS region to use for the corresponding -remoteWrite.url if -remoteWrite.aws.useSigv4 is set")
+	awsRoleARN     = flagutil.NewArray("remoteWrite.aws.roleARN", "Optional AWS roleARN to use for the corresponding -remoteWrite.url if -remoteWrite.aws.useSigv4 is set")
+	awsAccessKey   = flagutil.NewArray("remoteWrite.aws.accessKey", "Optional AWS AccessKey to use for the corresponding -remoteWrite.url if -remoteWrite.aws.useSigv4 is set")
+	awsService     = flagutil.NewArray("remoteWrite.aws.service", "Optional AWS Service to use for the corresponding -remoteWrite.url if -remoteWrite.aws.useSigv4 is set. "+
 		"Defaults to \"aps\"")
 	awsSecretKey = flagutil.NewArray("remoteWrite.aws.secretKey", "Optional AWS SecretKey to use for the corresponding -remoteWrite.url if -remoteWrite.aws.useSigv4 is set")
 )
@@ -234,12 +236,14 @@ func getAWSAPIConfig(argIdx int) (*awsapi.Config, error) {
 	if !awsUseSigv4.GetOptionalArg(argIdx) {
 		return nil, nil
 	}
+	ec2Endpoint := awsEC2Endpoint.GetOptionalArg(argIdx)
+	stsEndpoint := awsSTSEndpoint.GetOptionalArg(argIdx)
 	region := awsRegion.GetOptionalArg(argIdx)
 	roleARN := awsRoleARN.GetOptionalArg(argIdx)
 	accessKey := awsAccessKey.GetOptionalArg(argIdx)
 	secretKey := awsSecretKey.GetOptionalArg(argIdx)
 	service := awsService.GetOptionalArg(argIdx)
-	cfg, err := awsapi.NewConfig(region, roleARN, accessKey, secretKey, service)
+	cfg, err := awsapi.NewConfig(ec2Endpoint, stsEndpoint, region, roleARN, accessKey, secretKey, service)
 	if err != nil {
 		return nil, err
 	}
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 0de765f55..d65533086 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -23,6 +23,7 @@ The following tip changes can be tested by building VictoriaMetrics components f
 * FEATURE: improve performance for registering new time series in `indexdb` by up to 50%. Thanks to @ahfuzhang for [the issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2249).
 * FEATURE: [vmagent](https://docs.victoriametrics.com/vmagent.html): add service discovery for [Yandex Cloud](https://cloud.yandex.com/en/). See [these docs](https://docs.victoriametrics.com/sd_configs.html#yandexcloud_sd_configs) and [this feature request](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1386).
 
+* BUGFIX: [vmagent](https://docs.victoriametrics.com/vmagent.html): properly handle custom `endpoint` value in [ec2_sd_configs](https://prometheus.io/docs/prometheus/latest/configuration/configuration/#ec2_sd_config). It was ignored since [v1.77.0](https://docs.victoriametrics.com/CHANGELOG.html#v1770) because of a bug in the implementation of [this feature request](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1287).
 * BUGFIX: [vmagent](https://docs.victoriametrics.com/vmagent.html): allow stale responses from Consul service discovery (aka [consul_sd_configs](https://prometheus.io/docs/prometheus/latest/configuration/configuration/#consul_sd_config)) by default in the same way as Prometheus does. This should reduce load on Consul when discovering big number of targets. Stale responses can be disabled by specifying `allow_stale: false` option in `consul_sd_config`.
 * BUGFIX: [vmagent](https://docs.victoriametrics.com/vmagent.html): [dockerswarm_sd_configs](https://prometheus.io/docs/prometheus/latest/configuration/configuration/#dockerswarm_sd_config): properly set `__meta_dockerswarm_container_label_*` labels instead of `__meta_dockerswarm_task_label_*` labels as Prometheus does. See [this issue](https://github.com/prometheus/prometheus/issues/9187).
 * BUGFIX: [vmagent](https://docs.victoriametrics.com/vmagent.html): set `up` metric to `0` for partial scrapes in [stream parsing mode](https://docs.victoriametrics.com/vmagent.html#stream-parsing-mode). Previously the `up` metric was set to `1` when at least a single metric has been scraped before the error. This aligns the behaviour of `vmselect` with Prometheus.
diff --git a/lib/awsapi/config.go b/lib/awsapi/config.go
index 31b472ddc..e10d84736 100644
--- a/lib/awsapi/config.go
+++ b/lib/awsapi/config.go
@@ -43,8 +43,8 @@ type credentials struct {
 	Expiration      time.Time
 }
 
-// NewConfig returns new AWS Config.
-func NewConfig(region, roleARN, accessKey, secretKey, service string) (*Config, error) {
+// NewConfig returns new AWS Config from the given args.
+func NewConfig(ec2Endpoint, stsEndpoint, region, roleARN, accessKey, secretKey, service string) (*Config, error) {
 	cfg := &Config{
 		client:           http.DefaultClient,
 		region:           region,
@@ -65,8 +65,8 @@ func NewConfig(region, roleARN, accessKey, secretKey, service string) (*Config,
 		}
 		cfg.region = r
 	}
-	cfg.ec2Endpoint = buildAPIEndpoint(cfg.ec2Endpoint, cfg.region, "ec2")
-	cfg.stsEndpoint = buildAPIEndpoint(cfg.stsEndpoint, cfg.region, "sts")
+	cfg.ec2Endpoint = buildAPIEndpoint(ec2Endpoint, cfg.region, "ec2")
+	cfg.stsEndpoint = buildAPIEndpoint(stsEndpoint, cfg.region, "sts")
 	if cfg.roleARN == "" {
 		cfg.roleARN = os.Getenv("AWS_ROLE_ARN")
 	}
diff --git a/lib/promscrape/discovery/ec2/api.go b/lib/promscrape/discovery/ec2/api.go
index 652199fb3..def9d0a17 100644
--- a/lib/promscrape/discovery/ec2/api.go
+++ b/lib/promscrape/discovery/ec2/api.go
@@ -33,7 +33,11 @@ func newAPIConfig(sdc *SDConfig) (*apiConfig, error) {
 	if sdc.Port != nil {
 		port = *sdc.Port
 	}
-	awsCfg, err := awsapi.NewConfig(sdc.Region, sdc.RoleARN, sdc.AccessKey, sdc.SecretKey.String(), "ec2")
+	stsEndpoint := sdc.STSEndpoint
+	if stsEndpoint == "" {
+		stsEndpoint = sdc.Endpoint
+	}
+	awsCfg, err := awsapi.NewConfig(sdc.Endpoint, stsEndpoint, sdc.Region, sdc.RoleARN, sdc.AccessKey, sdc.SecretKey.String(), "ec2")
 	if err != nil {
 		return nil, err
 	}
diff --git a/lib/promscrape/discovery/ec2/ec2.go b/lib/promscrape/discovery/ec2/ec2.go
index dd229ae89..e0b2a169b 100644
--- a/lib/promscrape/discovery/ec2/ec2.go
+++ b/lib/promscrape/discovery/ec2/ec2.go
@@ -18,12 +18,13 @@ var SDCheckInterval = flag.Duration("promscrape.ec2SDCheckInterval", time.Minute
 //
 // See https://prometheus.io/docs/prometheus/latest/configuration/configuration/#ec2_sd_config
 type SDConfig struct {
-	Region    string           `yaml:"region,omitempty"`
-	Endpoint  string           `yaml:"endpoint,omitempty"`
-	AccessKey string           `yaml:"access_key,omitempty"`
-	SecretKey *promauth.Secret `yaml:"secret_key,omitempty"`
+	Region      string           `yaml:"region,omitempty"`
+	Endpoint    string           `yaml:"endpoint,omitempty"`
+	STSEndpoint string           `yaml:"sts_endpoint,omitempty"`
+	AccessKey   string           `yaml:"access_key,omitempty"`
+	SecretKey   *promauth.Secret `yaml:"secret_key,omitempty"`
 	// TODO add support for Profile, not working atm
-	Profile string `yaml:"profile,omitempty"`
+	// Profile string `yaml:"profile,omitempty"`
 	RoleARN string `yaml:"role_arn,omitempty"`
 	// RefreshInterval time.Duration `yaml:"refresh_interval"`
 	// refresh_interval is obtained from `-promscrape.ec2SDCheckInterval` command-line option.