ET MALWARE Observed Python Stealer User-Agent (WhatsAppBackup/1.0) Outbound

SID: 2068452Rev: 11 views
Sourceet/open
CreatedMarch 27, 2026
UpdatedMarch 27, 2026
Classificationtrojan-activity
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Python Stealer User-Agent (WhatsAppBackup/1.0) Outbound"; flow:established,to_server; http.user_agent; content:"WhatsAppBackup/1.0"; fast_pattern; reference:url,blog.sekoia.io/silver-fox-the-only-tax-audit-where-the-fine-print-installs-malware/; classtype:trojan-activity; sid:2068452; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_03_27, deployment Perimeter, confidence High, signature_severity Major, tag Stealer, tag c2, updated_at 2026_03_27, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)

References

urlblog.sekoia.io/silver-fox-the-only-tax-audit-where-the-fine-print-installs-malware/

Metadata

attack targetClient_Endpoint
created at2026_03_27
deploymentPerimeter
confidenceHigh
signature severityMajor
tagc2
updated at2026_03_27
mitre tactic idTA0011
mitre tactic nameCommand_And_Control
mitre technique idT1041
mitre technique nameExfiltration_Over_C2_Channel

Comments (0)

Please sign in to leave a comment.
Sign in

No comments yet. Be the first to comment!