Version DetailsCurrent
Rev: 1 • May 23, 2023, 12:00 PMET MALWARE Kraken Stealer SMTP Data Exfiltration Attempt
alert smtp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Kraken Stealer SMTP Data Exfiltration Attempt"; flow:established,to_server; content:"Subject|3a 20 20|Recovered From|3a 20|"; content:"Content-Type|3a 20|text/plain|3b 20|name|3d|RecoveredPassword.txt"; distance:0; content:"Content-Disposition|3a 20|attachment|0d 0a 0d 0a|"; distance:0; content:"IAB8AFMAeQBzAHQAZQBtACAASQBuAGYAbwB8AA0ACg"; distance:0; fast_pattern; reference:url,0xtoxin.github.io/malware analysis/KrakenKeylogger-pt1/; reference:md5,5bc9ee4bec5e31f4ed64fefa92ef5f2b; classtype:trojan-activity; sid:2045841; rev:1; 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; target:src_ip;)
May 23, 2023, 12:00 PM
May 23, 2023, 12:00 PM
May 23, 2023, 10:00 PM
May 23, 2023, 10:00 PM
rules/emerging-malware.rules