T1555.003 Credentials from Web Browsers in real malware

ATT&CK technique T1555.003 Credentials from Web Browsers appears in 9 publicly analyzed samples on MalwareAnalyzer by Cyble, 0.0% of the analyzed corpus. Seven-day prevalence is rising (9 recent vs 0 prior). Most associated families: AgentTesla, Bulz, Criakl, Crypted, DarkCloud.

Tactics: credential-access

Prevalence in the corpus

• Samples exhibiting T1555.003: 9
• Share of analyzed corpus: 0.0%
• Last 7 days: 9 · prior 7 days: 0 (rising)

Malware families using T1555.003

• AgentTesla - 1 sample
• Bulz - 1 sample
• Criakl - 1 sample
• Crypted - 1 sample
• DarkCloud - 1 sample
• Delf - 1 sample

Example samples

• e4229c1a56ae406f7db7ab360662a973f8f3b15a1bed7040918a62d6c8a99f75 - malicious
• e1c92a856c4f67c3054113642ab5be15f5766b8e335798d55b66fbc9ad5892ab - malicious
• ea31985086363dc8d9dca9df7eced875ef775b1a78a138723b105e32ba7d94b3 - malicious
• 8c3435c87304c6189dc8fd839867edb9cca804fbe07ae9db2b92563ee9c498ca - malicious
• a07b0ed764d7d1c1ecfc94da0ecd17ff910aa83abd6807d3a939456a999507cf - malicious
• 29a4bf4f2b2fe003e65424d86e857117f48a3c64865a843cd722a72f8efe4eda - malicious
• 74fb601f4970e34fdccae66aaddc5e8cc1fdb465ca2f9ee927a54a4956ba8412 - malicious
• notis pembayaran.exe - malicious
• c1c4bb461ff536b48f3d2567162cd1db27593f783b3d85191f1967ec71790f38.exe - malicious

Canonical technique definition: MITRE ATT&CK T1555.003 (ATT&CK v19.1, CC BY 4.0).

Frequently asked about T1555.003

How common is ATT&CK T1555.003 (Credentials from Web Browsers) in real malware?

ATT&CK technique T1555.003 Credentials from Web Browsers appears in 9 publicly analyzed samples on MalwareAnalyzer by Cyble, 0.0% of the analyzed corpus. Seven-day prevalence is rising (9 recent vs 0 prior). Most associated families: AgentTesla, Bulz, Criakl, Crypted, DarkCloud.

Is T1555.003 becoming more common?

Prevalence is rising: 9 samples in the last seven days against 0 in the seven days before. This measures submissions to MalwareAnalyzer by Cyble, so it reflects what is being submitted here rather than global attacker behaviour.

Which malware families use T1555.003?

In this corpus T1555.003 is most associated with AgentTesla (1), Bulz (1), Criakl (1), Crypted (1), DarkCloud (1), Delf (1). Counts are analyzed samples per family in which the technique was observed.

What share of analyzed samples use T1555.003?

0.0% of the publicly analyzed corpus (9 of 100981 samples) exhibits T1555.003. Technique attribution comes from behavior captured during real sandbox detonation and from static analysis, not from a vendor label.

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