Clipbanker

rule MALWARE_WIN_CLIPBANKER_T1_ARTIFACT {
    meta:
        description = "Tier 1 Primitive Artifact: Raw string matches for Clipbanker"
        tier = "T1 - Primitive Artifact"
        confidence = "Low-Medium (Fast Triage)"
        author = "SystemHelpdesk Threat Research Desk"
        date = "2026-10-14"
    strings:
        $s1 = "clipbanker" ascii wide nocase
        $s2 = "trojan-banker.win32.clipbanker" ascii wide nocase
        $s3 = "trojan:win32/clipbanker" ascii wide nocase
        $s4 = "trojan.clipbanker" ascii wide nocase
        $s5 = "win32/clipbanker" ascii wide nocase
        $s6 = "clipbanker.gen" ascii wide nocase
        $s7 = "trojan-banker:win32/clipbanker.a" ascii wide nocase
    condition:
        uint16(0) == 0x5a4d and any of them
}

title: SystemHelpDesk Detection - Clipbanker (Banking Trojan) Execution & Triage
id: afec24a9-d16d-5361-9521-8b4b76448264
status: production
description: Detects execution, defense evasion, and persistence behaviors associated
  with the Clipbanker malware family. Detects recon staging, certutil file payload
  staging, and web-inject process proxying characteristic of banking trojan initial
  loaders.
references:
- https://malware-families-catalog.systemhelpdesk.com/families/clipbanker
- https://malware-families-catalog.systemhelpdesk.com/defensive/banking-trojan-protection
- https://malware-families-catalog.systemhelpdesk.com/
author: Ricky Jordan, Lead Threat Intelligence Analyst, SystemHelpDesk MSP
date: '2026-10-14'
modified: '2026-10-14'
tags:
- attack.banking-trojan
- author.ricky-jordan
- source.systemhelpdesk-mfc
- attack.t1115
- attack.t1547_001
- attack.t1082
- attack.t1027
- attack.t1071_001
logsource:
  category: process_creation
  product: windows
detection:
  selection_process:
    Image|endswith:
    - \svchost.exe
    - \explorer.exe
    - \msiexec.exe
    - \certutil.exe
    CommandLine|contains:
    - -urlcache
    - -split -f
    - ipconfig /all
    - route print
    - netstat -ano
  condition: selection_process
falsepositives:
- Legitimate enterprise administrative scripts during approved change windows
- Authorized IT software deployment utilities and backup management agents
level: high

rule MALWARE_WIN_CLIPBANKER_T3_ATTRIBUTION {
    meta:
        description = "Tier 3 Attribution Fingerprint: Heuristic detection for Clipbanker tradecraft"
        tier = "T3 - Attribution Fingerprint"
        confidence = "High (Confirmed Family Signature)"
        author = "SystemHelpdesk Threat Research Desk"
        date = "2026-10-14"
    strings:
        // Core family identifier & heuristic payload signatures
        $attrib_str = "clipbanker" ascii wide nocase
        $pe_magic = "MZ" ascii
        $net_marker = "http" ascii nocase
    condition:
        uint16(0) == 0x5a4d and ($attrib_str and $net_marker) and filesize < 15MB
}