diff --git a/rust/ql/test/query-tests/security/CWE-327/BrokenCryptoAlgorithm/Cargo.lock b/rust/ql/test/query-tests/security/CWE-327/BrokenCryptoAlgorithm/Cargo.lock
index 708b79ed46d5..a47021d54b46 100644
--- a/rust/ql/test/query-tests/security/CWE-327/BrokenCryptoAlgorithm/Cargo.lock
+++ b/rust/ql/test/query-tests/security/CWE-327/BrokenCryptoAlgorithm/Cargo.lock
@@ -76,6 +76,15 @@ dependencies = [
  "cipher",
 ]
 
+[[package]]
+name = "ecb"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a8bfa975b1aec2145850fcaa1c6fe269a16578c44705a532ae3edc92b8881c7"
+dependencies = [
+ "cipher",
+]
+
 [[package]]
 name = "generic-array"
 version = "0.14.7"
@@ -146,6 +155,7 @@ dependencies = [
  "cbc",
  "cipher",
  "des",
+ "ecb",
  "rabbit",
  "rc2",
  "rc4",
diff --git a/rust/ql/test/query-tests/security/CWE-327/BrokenCryptoAlgorithm/options.yml b/rust/ql/test/query-tests/security/CWE-327/BrokenCryptoAlgorithm/options.yml
index 5a3cf0cab12e..139cb084be20 100644
--- a/rust/ql/test/query-tests/security/CWE-327/BrokenCryptoAlgorithm/options.yml
+++ b/rust/ql/test/query-tests/security/CWE-327/BrokenCryptoAlgorithm/options.yml
@@ -8,3 +8,4 @@ qltest_dependencies:
     - rc2 = { version = "0.8.1" }
     - rc5 = { version = "0.0.1" }
     - cbc = { version = "0.1.2" }
+    - ecb = { version = "0.1.2" }
diff --git a/rust/ql/test/query-tests/security/CWE-327/BrokenCryptoAlgorithm/test_cipher.rs b/rust/ql/test/query-tests/security/CWE-327/BrokenCryptoAlgorithm/test_cipher.rs
index 61471ac99ecf..17db0f9ceb19 100644
--- a/rust/ql/test/query-tests/security/CWE-327/BrokenCryptoAlgorithm/test_cipher.rs
+++ b/rust/ql/test/query-tests/security/CWE-327/BrokenCryptoAlgorithm/test_cipher.rs
@@ -145,3 +145,33 @@ fn test_cbc(
     let des_cipher4 = cbc::Encryptor::<des::Des>::new(key.into(), iv.into()); // $ MISSING: Alert[rust/weak-cryptographic-algorithm]
     _ = des_cipher4.encrypt_padded_b2b_mut::<des::cipher::block_padding::Pkcs7>(input, data).unwrap();
 }
+
+type MyAesEcbEncryptor = ecb::Encryptor<aes::Aes128>;
+
+fn test_ecb(
+    key: &[u8], key128: &[u8;16],
+    input: &[u8], data: &mut [u8]
+) {
+    let data_len = data.len();
+
+    // aes with ECB (weak block mode)
+    let aes_cipher1 = ecb::Encryptor::<aes::Aes128>::new(key128.into()); // $ MISSING: Alert[rust/weak-cryptographic-algorithm]
+    _ = aes_cipher1.encrypt_padded_mut::<aes::cipher::block_padding::Pkcs7>(data, data_len).unwrap();
+
+    let aes_cipher2 = MyAesEcbEncryptor::new(key.into()); // $ MISSING: Alert[rust/weak-cryptographic-algorithm]
+    _ = aes_cipher2.encrypt_padded_mut::<aes::cipher::block_padding::Pkcs7>(data, data_len).unwrap();
+
+    let aes_cipher3 = ecb::Encryptor::<aes::Aes128>::new_from_slice(&key).unwrap(); // $ MISSING: Alert[rust/weak-cryptographic-algorithm]
+    _ = aes_cipher3.encrypt_padded_mut::<aes::cipher::block_padding::Pkcs7>(data, data_len).unwrap();
+
+    let aes_cipher4 = ecb::Encryptor::<aes::Aes128>::new(key.into()); // $ MISSING: Alert[rust/weak-cryptographic-algorithm]
+    _ = aes_cipher4.encrypt_padded_b2b_mut::<aes::cipher::block_padding::Pkcs7>(input, data).unwrap();
+
+    // des with ECB (broken cipher + weak block mode)
+    let des_cipher1 = ecb::Encryptor::<des::Des>::new(key.into()); // $ MISSING: Alert[rust/weak-cryptographic-algorithm]
+    _ = des_cipher1.encrypt_padded_mut::<des::cipher::block_padding::Pkcs7>(data, data_len).unwrap();
+
+    // rc2 with ECB (broken cipher + weak block mode)
+    let rc2_cipher1 = ecb::Encryptor::<rc2::Rc2>::new(key.into()); // $ MISSING: Alert[rust/weak-cryptographic-algorithm]
+    _ = rc2_cipher1.encrypt_padded_mut::<rc2::cipher::block_padding::Pkcs7>(data, data_len).unwrap();
+}