Scheduled Task Created by Lynx Ransomware to Trigger Startup Execution


Zero‑Dwell Threat Intelligence Report

A narrative, executive‑ready view into the malware’s behavior, exposure, and reliable defenses.
Generated: 2026-01-09 15:10:32 UTC

Executive Overview — What We’re Dealing With

This specimen has persisted long enough to matter. Human experts classified it as Malware, and the telemetry confirms a capable, evasive Trojan with real impact potential.

File
ebj04c7g1.exe
Type
Generic CIL Executable (.NET, Mono, etc.)
SHA‑1
32fdda11d2f03bd9e99b1a30b67335155551cf66
MD5
99035850d71d911c9694f245b85ae221
First Seen
2026-01-08 13:02:54.065285
Last Analysis
2026-01-08 13:06:36.978686
Dwell Time
0 days, 7 hours, 33 minutes

Extended Dwell Time Impact

For 3+ minutes, this malware was rapidly detected — demonstrating excellent security controls that intercepted the threat during initial execution phases, severely limiting adversary capabilities.

Comparative Context

Industry studies report a median dwell time closer to 21–24 days. This case represents extremely rapid detection within minutes.

Timeline

Time (UTC) Event Elapsed
2025-12-09 12:00:04 UTC First VirusTotal submission
2026-01-09 14:18:40 UTC Latest analysis snapshot 31 days, 2 hours, 18 minutes
2026-01-09 15:10:32 UTC Report generation time 31 days, 3 hours, 10 minutes

Why It Matters

Every additional day of dwell time is not just an abstract number — it is attacker opportunity. Each day equates to more time for lateral movement, stealth persistence, and intelligence gathering.

Global Detection Posture — Who Caught It, Who Missed It

VirusTotal engines: 67. Detected as malicious: 46. Missed: 21. Coverage: 68.7%.

Detected Vendors

  • Xcitium
  • +45 additional vendors (names not provided)

List includes Xcitium plus an additional 45 vendors per the provided summary.

Missed Vendors

  • Acronis
  • Antiy-AVL
  • Baidu
  • CMC
  • Cynet
  • DrWeb
  • ESET-NOD32
  • Fortinet
  • google_safebrowsing
  • Gridinsoft
  • Jiangmin
  • SUPERAntiSpyware
  • TACHYON
  • tehtris
  • TrendMicro
  • VBA32
  • VirIT
  • Webroot
  • Yandex
  • ZoneAlarm
  • Zoner

Why it matters: if any endpoint relies solely on a missed engine, this malware can operate with zero alerts. Prevention‑first controls close that gap regardless of signature lag.

MITRE ATT&CK Mapping

  • T1027 – The binary likely contains encrypted or compressed data
  • T1027.002 – The binary likely contains encrypted or compressed data

Following the Trail — Network & DNS Activity

Outbound activity leans on reputable infrastructure (e.g., CDNs, cloud endpoints) to blend in. TLS sessions and
HTTP calls show routine beaconing and IP‑lookup behavior that can masquerade as normal browsing.

Hunting tip: alert on unknown binaries initiating TLS to IP‑lookup services or unusual CDN endpoints — especially early in execution.

What To Do Now — Practical Defense Playbook

  • Contain unknowns: block first‑run binaries by default — signatures catch up, containment works now.
  • EDR controls: alert on keyboard hooks, screen capture APIs, VM/sandbox checks, and command‑shell launches.
  • Registry watch: flag queries/sets under policy paths (e.g., …\FipsAlgorithmPolicy\*).
  • Network rules: inspect outbound TLS to IP‑lookup services and unexpected CDN endpoints.
  • Hunt broadly: sweep endpoints for the indicators above and quarantine positives immediately.

Dwell time equals attacker opportunity. Reducing execution privileges and egress shrinks that window even when vendors disagree.

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