Ransomware Sample Creating Malicious Services For Persistent Execution


Zero‑Dwell Threat Intelligence Report

A narrative, executive‑ready view into the malware’s behavior, exposure, and reliable defenses.
Generated: 2025-12-04 08:32:50 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
ub7hl.exe
Type
Win32 Executable MS Visual C++ (generic)
SHA‑1
e0c810ab6c079cc54af74eeb2ee719aaae796232
MD5
d0bb703b7207ad171ad747a11a29a518
First Seen
2025-12-01 14:09:02.155898
Last Analysis
2025-12-01 21:28:47.803920
Dwell Time
0 days, 7 hours, 33 minutes

Extended Dwell Time Impact

For 7+ hours, this malware remained undetected — a several-hour window that allowed the adversary to complete initial compromise and begin early-stage persistence establishment.

Comparative Context

Industry studies report a median dwell time closer to 21–24 days. This case represents rapid detection and containment within hours rather than days.

Timeline

Time (UTC) Event Elapsed
2025-11-25 00:31:57 UTC First VirusTotal submission
2025-12-03 21:12:26 UTC Latest analysis snapshot 8 days, 20 hours, 40 minutes
2025-12-04 08:32:50 UTC Report generation time 9 days, 8 hours, 0 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: 73. Detected as malicious: 67. Missed: 6. Coverage: 91.8%.

Detected Vendors

  • Xcitium
  • +66 additional vendors (names not provided)

List includes Xcitium plus an additional 66 vendors per the provided summary.

Missed Vendors

  • Acronis
  • CMC
  • Google
  • SUPERAntiSpyware
  • TACHYON
  • tehtris

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.

Behavioral Storyline — How the Malware Operates

Dominant system-level operations (35.16% of behavior) suggest this malware performs deep system reconnaissance, privilege escalation, or core OS manipulation. It’s actively probing system defenses and attempting to gain administrative control.

Behavior Categories (weighted)

Weight values represent the frequency and intensity of malware interactions with specific system components. Higher weights indicate more aggressive targeting of that category. Each operation (registry access, file modification, network connection, etc.) contributes to the category’s total weight, providing a quantitative measure of the malware’s behavioral focus.

Category Weight Percentage
System 3067 35.16%
Registry 2749 31.51%
Misc 1485 17.02%
File System 705 8.08%
Device 216 2.48%
Process 174 1.99%
Threading 148 1.70%
Services 66 0.76%
Com 43 0.49%
Crypto 32 0.37%
Network 20 0.23%
Hooking 7 0.08%
Synchronization 7 0.08%
Windows 4 0.05%

MITRE ATT&CK Mapping

  • T1543.003 – create service
  • T1569.002 – create service
  • T1543.003 – persist via Windows service
  • T1569.002 – persist via Windows service
  • T1016 – get socket status
  • T1027.005 – contain obfuscated stackstrings
  • T1543.003 – start service
  • T1082 – get number of processors
  • T1083 – get file size
  • T1129 – link function at runtime on Windows
  • T1543.003 – modify service
  • T1569.002 – modify service

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.

Contacted Domains

Domain IP Country ASN/Org
www.msftncsi.com 23.200.3.18 United States Akamai Technologies, Inc.
www.aieov.com 13.248.169.48 United States Amazon Technologies Inc.
www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com 104.16.166.228 United States Cloudflare, Inc.

Observed IPs

IP Country ASN/Org
224.0.0.252
239.255.255.250
8.8.4.4 United States Google LLC
8.8.8.8 United States Google LLC

DNS Queries

Request Type
5isohu.com A
www.msftncsi.com A
www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com A
www.aieov.com A

Contacted IPs

IP Country ASN/Org
224.0.0.252
239.255.255.250
8.8.4.4 United States Google LLC
8.8.8.8 United States Google LLC

Port Distribution

Port Count Protocols
137 1 udp
5355 6 udp
53 58 udp
3702 1 udp

UDP Packets

Source IP Dest IP Sport Dport Time Proto
192.168.56.13 192.168.56.255 137 137 3.2704410552978516 udp
192.168.56.13 224.0.0.252 49311 5355 5.744839906692505 udp
192.168.56.13 224.0.0.252 55150 5355 3.1892828941345215 udp
192.168.56.13 224.0.0.252 57310 5355 21.888556003570557 udp
192.168.56.13 224.0.0.252 60010 5355 5.199481010437012 udp
192.168.56.13 224.0.0.252 62406 5355 3.1953158378601074 udp
192.168.56.13 224.0.0.252 63527 5355 3.839359998703003 udp
192.168.56.13 239.255.255.250 52252 3702 3.1986918449401855 udp
192.168.56.13 8.8.4.4 50554 53 98.05711388587952 udp
192.168.56.13 8.8.4.4 53518 53 203.125834941864 udp
192.168.56.13 8.8.4.4 53985 53 329.08787083625793 udp
192.168.56.13 8.8.4.4 54879 53 7.760642051696777 udp
192.168.56.13 8.8.4.4 54881 53 6.415905952453613 udp
192.168.56.13 8.8.4.4 55551 53 126.85418391227722 udp
192.168.56.13 8.8.4.4 55743 53 314.72847604751587 udp
192.168.56.13 8.8.4.4 56086 53 282.123822927475 udp
192.168.56.13 8.8.4.4 56197 53 112.44767689704895 udp
192.168.56.13 8.8.4.4 56202 53 526.4786109924316 udp
192.168.56.13 8.8.4.4 56908 53 343.5572168827057 udp
192.168.56.13 8.8.4.4 57065 53 217.47923302650452 udp
192.168.56.13 8.8.4.4 57415 53 36.16642189025879 udp
192.168.56.13 8.8.4.4 58070 53 357.9160988330841 udp
192.168.56.13 8.8.4.4 58697 53 8.185708999633789 udp
192.168.56.13 8.8.4.4 58920 53 50.93281388282776 udp
192.168.56.13 8.8.4.4 59610 53 250.0880959033966 udp
192.168.56.13 8.8.4.4 60543 53 174.27589583396912 udp
192.168.56.13 8.8.4.4 60780 53 264.4474890232086 udp
192.168.56.13 8.8.4.4 60910 53 65.33803296089172 udp
192.168.56.13 8.8.4.4 61004 53 145.52603006362915 udp
192.168.56.13 8.8.4.4 61800 53 300.36919689178467 udp
192.168.56.13 8.8.4.4 61897 53 512.1258769035339 udp
192.168.56.13 8.8.4.4 62422 53 372.276006937027 udp
192.168.56.13 8.8.4.4 62493 53 22.86912703514099 udp
192.168.56.13 8.8.4.4 62849 53 21.760303020477295 udp
192.168.56.13 8.8.4.4 64533 53 159.9008288383484 udp
192.168.56.13 8.8.4.4 64801 53 79.74475693702698 udp
192.168.56.13 8.8.4.4 64886 53 231.8380868434906 udp
192.168.56.13 8.8.8.8 50554 53 97.05742883682251 udp
192.168.56.13 8.8.8.8 53518 53 202.12693095207214 udp
192.168.56.13 8.8.8.8 53985 53 328.0898199081421 udp
192.168.56.13 8.8.8.8 54879 53 8.760226011276245 udp
192.168.56.13 8.8.8.8 54881 53 7.400364875793457 udp
192.168.56.13 8.8.8.8 55551 53 125.85990500450134 udp
192.168.56.13 8.8.8.8 55743 53 313.72892904281616 udp
192.168.56.13 8.8.8.8 56086 53 281.12877583503723 udp
192.168.56.13 8.8.8.8 56197 53 111.45567989349365 udp
192.168.56.13 8.8.8.8 56202 53 525.479306936264 udp
192.168.56.13 8.8.8.8 56908 53 342.55909299850464 udp
192.168.56.13 8.8.8.8 57065 53 216.47913694381714 udp
192.168.56.13 8.8.8.8 57415 53 35.166873931884766 udp
192.168.56.13 8.8.8.8 58070 53 356.91655802726746 udp
192.168.56.13 8.8.8.8 58697 53 9.182013034820557 udp
192.168.56.13 8.8.8.8 58920 53 49.932312965393066 udp
192.168.56.13 8.8.8.8 59610 53 249.08966994285583 udp
192.168.56.13 8.8.8.8 60543 53 173.28941106796265 udp
192.168.56.13 8.8.8.8 60780 53 263.44804406166077 udp
192.168.56.13 8.8.8.8 60910 53 64.3390429019928 udp
192.168.56.13 8.8.8.8 61004 53 144.53013586997986 udp
192.168.56.13 8.8.8.8 61800 53 299.3715009689331 udp
192.168.56.13 8.8.8.8 61897 53 511.1284508705139 udp
192.168.56.13 8.8.8.8 62422 53 371.27605390548706 udp
192.168.56.13 8.8.8.8 62493 53 21.879060983657837 udp
192.168.56.13 8.8.8.8 62849 53 20.761409044265747 udp
192.168.56.13 8.8.8.8 64533 53 158.90586590766907 udp
192.168.56.13 8.8.8.8 64801 53 78.74822998046875 udp
192.168.56.13 8.8.8.8 64886 53 230.83888387680054 udp

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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