""ET TROJAN Kraken Stealer SMTP Data Exfiltration Attempt""
SID: 2045841
Revision: 1
Class Type: trojan-activity
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_05_23, deployment Perimeter, malware_family Kraken_Stealer, performance_impact Low, confidence High, signature_severity Major, updated_at 2023_05_23
Reference:
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md5
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5bc9ee4bec5e31f4ed64fefa92ef5f2b
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: [25,465,587,691]
Flow: established,to_server
Contents:
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Value: "Subject|3a 20 20|Recovered From|3a 20|"
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Value: "Content-Type|3a 20|text/plain|3b 20|name|3d|RecoveredPassword.txt"
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Value: "Content-Disposition|3a 20|attachment|0d 0a 0d 0a|"
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Value: "IAB8AFMAeQBzAHQAZQBtACAASQBuAGYAbwB8AA0ACg"
Within:
PCRE:
Special Options:
- fast_pattern