T1571 Non-Standard Port in real malware

ATT&CK technique T1571 Non-Standard Port appears in 155 publicly analyzed samples on MalwareAnalyzer by Cyble, 0.1% of the analyzed corpus. Seven-day prevalence is flat (0 recent vs 0 prior). Most associated families: Upantix, HUILoader, Ulise, Gobot, Rozena.

Tactics: command-and-control

Prevalence in the corpus

• Samples exhibiting T1571: 155
• Share of analyzed corpus: 0.1%
• Last 7 days: 0 · prior 7 days: 0 (flat)

Malware families using T1571

• Upantix - 95 samples
• HUILoader - 39 samples
• Ulise - 7 samples
• Gobot - 3 samples
• Rozena - 3 samples
• Crypted - 2 samples

Example samples

• dca7fe5ac2d1b1b972d6d0f6fee28d481a50cb654bd25a93542cd74a694b6282 - malicious
• c650d7ac82fc30afc81f94e7dd29c4598ea96c977acb8a96c6835211c9b6d188 - malicious
• 33a325bb4be2fdc9e07498102f56e29a4c53a809e4165814235ecb8d66b55c36 - malicious
• a2eaebf07943a5803ed53442b0d7f90c4a611649ba3b377b3a09ca63c1ac8d01 - malicious
• 7c43325de2cdf2ea1be993d09fd613761a1288baf0a08d2bd26a5954c23d15b1 - malicious
• d262c64f7cf045d85901663ef4ca9ff3ee410b68f3b6cd944a80a3c911715241 - malicious
• 612a294cd607c71aebc1ea44eab4b7b87a023ab42c0430be59f6e52182f97ef9 - malicious
• 45c1d1e3473b0132fc927ecdc39e907cbe08f1b2bb221e72560eff1146632d21 - malicious
• 8da0406abfdb8ea05727aaf1a675ec6bc9d76f7854ce94707788b2c2edc5c624 - malicious
• fe6fd5dc8053c15977d051530469a6592db03042f277168041b18f656d6c0d49 - malicious
• 592c4b9e352073c126277576c7b4b2e1647c4737be6fa704fa54956c0ba3c11c - malicious
• 24f0fab64a6bf94e133ebc277737e7cbe509252bc0d2caf8236a35909caaaa24 - malicious
• 522f2a42a807a766c2de4b8ca4e98db7023ad1bd8f18d008b5d39d2cf613298d - malicious
• f8ae4d372a2a085b62a174ee644bc6fa5c144f247c928d8cb0776e43ceb05ef2 - malicious
• 873f7b14dd1c11f5fc3d34d951b2f6c78c3d1b09d599277dad2d1c9c919f6571 - malicious
• 5599812c846bf630def0c094526678ea0be08a4ece8811fa3470195b461d248e - malicious
• 8f7534bc35eef77421f8a2ba8ef6acea78f0adcb64c43db505b52f0e450adc76 - malicious
• f51838ec3c5d8c80c273b5db5392f00e478861e69dc249aedab4ff2c2be662a1 - malicious
• e59da8f9150f12c7277d98b60641d2ff110a144ea10a34d5c8dca71aa4c655c6 - malicious
• a204b66914a7a9fbb700400c7cb249015f1bbb6bbfc1b5b1a73f4e452bc65748 - malicious
• 5926b0ac363e9b036f4631c7f59b40f8c40199746e9f82a6fa5187f93c6945dc - malicious
• 9b2da7a06c299b17644dd6c39d2f4149c717708a4aaa217378a30329341a2b9c - malicious
• 2998b10e63ca51062d20ed9145b6ffd0f18cce0a4f4404cda2ab2f72c30b1cfd - malicious
• 650fea17d9b35bac50bffb51e47882dd28c5ea9db30211fdb9f87abd4462c0d2 - malicious
• 5c02d48e0e55ce59b3550f5d0b18c1f1def4040ef4e0b2b80f6a4ac4f29d0bd5 - malicious

Canonical technique definition: MITRE ATT&CK T1571 (ATT&CK v19.1, CC BY 4.0).

Frequently asked about T1571

How common is ATT&CK T1571 (Non-Standard Port) in real malware?

ATT&CK technique T1571 Non-Standard Port appears in 155 publicly analyzed samples on MalwareAnalyzer by Cyble, 0.1% of the analyzed corpus. Seven-day prevalence is flat (0 recent vs 0 prior). Most associated families: Upantix, HUILoader, Ulise, Gobot, Rozena.

Which malware families use T1571?

In this corpus T1571 is most associated with Upantix (95), HUILoader (39), Ulise (7), Gobot (3), Rozena (3), Crypted (2). Counts are analyzed samples per family in which the technique was observed.

What share of analyzed samples use T1571?

0.1% of the publicly analyzed corpus (155 of 114611 samples) exhibits T1571. Technique attribution comes from behavior captured during real sandbox detonation and from static analysis, not from a vendor label.

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