{
  "family": "fraudrop",
  "sample_count": 18,
  "category": "ransomware",
  "description": "TrojanDropper:Win32/Fraudrop is a persistent, stealthy trojan designed specifically to breach endpoint defenses and securely drop secondary, high-severity payloads (often Rogue Security Software, ransomware, or botnet agents) directly onto the file system.<br><br><b>Understanding Fraudrop</b><br>To an end-user, a Fraudrop infection is typically invisible until the devastating secondary payload executes. For threat intelligence analysts, Fraudrop is a critical staging mechanism. Unlike a standard downloader that fetches code from the internet, a 'Dropper' actually contains the secondary payload embedded within its own code structure. Its primary objective is to securely bypass endpoint defenses, extract the embedded payload, and execute it.<br><br><b>Execution and Evasion Strategies</b><br>Fraudrop is commonly distributed via massive malspam campaigns containing weaponized attachments (like ZIP files or Office macros) or through exploit kits. Upon execution, it utilizes heavy packing and obfuscation to evade static antivirus signatures (`T1027`). Once running, it unpacks its internal payload and writes it (drops it) to a strategic location on the disk, such as `%Temp%` or `%AppData%`. It then executes this dropped file. Fraudrop often uses techniques like 'timestomping' (`T1070.006`) to make the dropped file appear legitimate and establishes persistence for the payload via Registry Run keys.<br><br><b>Indicators of Compromise (IoCs)</b><br>Threat hunters should investigate EDR alerts related to suspicious file creation events in user profile directories followed immediately by the execution of that newly created file. Because the payload is embedded, network IoCs for the initial stage may be minimal. Memory analysis and static reverse engineering of the Fraudrop binary are necessary to extract the embedded payload and understand its ultimate objective.",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [],
  "enrichment_level": "expert-seo",
  "faq": [],
  "faq_count": 0,
  "mitre_attack": [
    "T1055",
    "T1105",
    "T1027",
    "T1547.001",
    "T1566.001"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-06-09",
  "mitre_attack_detail": [
    {
      "id": "T1105",
      "name": "Ingress Tool Transfer",
      "tactic": "Command and Control"
    },
    {
      "id": "T1055",
      "name": "Process Injection",
      "tactic": "Defense Evasion"
    },
    {
      "id": "T1547.001",
      "name": "Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder",
      "tactic": "Persistence"
    },
    {
      "id": "T1566.001",
      "name": "Phishing: Spearphishing Attachment",
      "tactic": "Initial Access"
    },
    {
      "id": "T1027",
      "name": "Obfuscated Files or Information",
      "tactic": "Defense Evasion"
    }
  ],
  "containment_steps": [
    "Isolate the endpoint immediately to prevent the secondary payloads dropped by Fraudrop from executing or spreading.",
    "Audit the Windows Task Scheduler and Registry Run keys to identify and remove the persistence mechanisms established for the dropped payload.",
    "Perform a deep forensic scan of the `%AppData%` and `%Temp%` directories to locate and remove all executables dropped by the initial infection vector.",
    "Submit the original Fraudrop executable to a sandbox to extract and analyze the embedded secondary payload."
  ],
  "what_to_avoid": [
    "Do not close an incident simply because the initial Fraudrop executable was quarantined; the embedded payload was likely already dropped and running.",
    "Avoid relying solely on static hash sweeping; Droppers frequently re-pack their binaries to generate novel hashes for every campaign."
  ],
  "target_industries": [
    "Global / Opportunistic"
  ],
  "motivation": "Opportunistic",
  "threat_actors": [
    "Unknown / Cybercriminal"
  ],
  "target_geographies": [
    "Global"
  ]
}