BlackBasta Ransomware Dropping LumaStealer


Zero‑Dwell Threat Intelligence Report

A narrative, executive‑ready view into the malware’s behavior, exposure, and reliable defenses.
Generated: 2025-10-21 12:42:40 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
6m9r0g1.exe
Type
PE32 executable (GUI) Intel 80386, for MS Windows
SHA‑1
9e660b67418c95dcafe7d5da2c160225376cd91a
MD5
0764142fbbeff845879db1d7c959f9ab
First Seen
2025-09-14 13:37:48.402588
Last Analysis
2025-09-15 07:15:22.894180
Dwell Time
0 days, 7 hours, 33 minutes

Extended Dwell Time Impact

For 17+ hours, this malware remained undetected — a half-day window that permitted the adversary to complete initial execution, establish basic persistence, and perform initial system enumeration.

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
2025-09-09 20:58:57 UTC First VirusTotal submission
2025-09-19 06:46:32 UTC Latest analysis snapshot 9 days, 9 hours, 47 minutes
2025-10-21 12:42:40 UTC Report generation time 41 days, 15 hours, 43 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: 72. Detected as malicious: 53. Missed: 19. Coverage: 73.6%.

Detected Vendors

  • Xcitium
  • +52 additional vendors (names not provided)

List includes Xcitium plus an additional 52 vendors per the provided summary.

Missed Vendors

  • Acronis
  • Antiy-AVL
  • Baidu
  • ClamAV
  • CMC
  • DrWeb
  • huorong
  • Jiangmin
  • Kingsoft
  • NANO-Antivirus
  • SUPERAntiSpyware
  • TACHYON
  • tehtris
  • ViRobot
  • Webroot
  • Yandex
  • Zillya
  • 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.

Behavioral Storyline — How the Malware Operates

Dominant system-level operations (49.34% 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 2332 49.34%
File System 2299 48.65%
Process 76 1.61%
Device 8 0.17%
Registry 4 0.08%
Misc 3 0.06%
Hooking 2 0.04%
Network 1 0.02%
Threading 1 0.02%

MITRE ATT&CK Mapping

  • T1057 – enumerate processes
  • T1518 – enumerate processes
  • T1033 – get session user name
  • T1087 – get session user name
  • T1129 – link many functions at runtime
  • T1057 – get process heap flags
  • T1129 – link function at runtime on Windows
  • T1027 – encode data using XOR
  • T1129 – parse PE header
  • T1614.001 – get keyboard layout
  • T1082 – query environment variable
  • T1614 – get geographical location
  • T1027 – encrypt data using AES
  • T1082 – get hostname
  • T1027 – reference AES constants
  • T1012 – query or enumerate registry value
  • T1082 – get memory capacity
  • T1129 – access PEB ldr_data
  • T1083 – get common file path
  • T1083 – enumerate files on Windows
  • T1071 – Dynamic (imported) function loading detected
  • T1071 – Reads data out of its own binary image
  • T1071 – Binary file triggered YARA rule
  • T1485 – Anomalous file deletion behavior detected (10+)
  • T1129 – The process tried to load dynamically one or more functions.
  • T1063 – It Tries to detect injection methods

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.aieov.com 76.223.54.146 United States Amazon.com, Inc.

Observed IPs

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

DNS Queries

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

Contacted IPs

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

Port Distribution

Port Count Protocols
137 1 udp
138 1 udp
5355 4 udp
53 6 udp

UDP Packets

Source IP Dest IP Sport Dport Time Proto
192.168.56.14 192.168.56.255 137 137 3.0802628993988037 udp
192.168.56.14 192.168.56.255 138 138 9.078747034072876 udp
192.168.56.14 224.0.0.252 51209 5355 3.010948896408081 udp
192.168.56.14 224.0.0.252 53401 5355 4.969142913818359 udp
192.168.56.14 224.0.0.252 55094 5355 5.574318885803223 udp
192.168.56.14 224.0.0.252 55848 5355 3.011193037033081 udp
192.168.56.14 8.8.4.4 52815 53 7.7968010902404785 udp
192.168.56.14 8.8.4.4 62112 53 37.57841205596924 udp
192.168.56.14 8.8.4.4 65148 53 23.1720449924469 udp
192.168.56.14 8.8.8.8 52815 53 8.805300951004028 udp
192.168.56.14 8.8.8.8 62112 53 36.57883596420288 udp
192.168.56.14 8.8.8.8 65148 53 22.178874015808105 udp

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

Persistence & Policy — Registry and Services

Registry and service telemetry points to policy awareness and environment reconnaissance rather than noisy persistence. Below is a compact view of the most relevant keys and handles; expand to see the full lists where available.

Registry Opened

34

Registry Set

0

Services Started

0

Services Opened

0

Registry Opened (Top 25)

Key
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Lsa\FipsAlgorithmPolicy\STE
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\GRE_Initialize\DisableUmpdBufferSizeCheck
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Lsa\FipsAlgorithmPolicy
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Lsa\FipsAlgorithmPolicy\MDMEnabled
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Lsa\FipsAlgorithmPolicy\Enabled
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\GRE_Initialize\DisableMetaFiles
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\GRE_Initialize
HKEY_LOCAL_MACHINE\Software\WOW6432Node\Microsoft\LanguageOverlay\OverlayPackages\en-US
HKEY_LOCAL_MACHINE\Software\WOW6432Node\Policies\Microsoft\Windows\Safer\CodeIdentifiers
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\DllNXOptions
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\AppModel\Lookaside\machine
HKEY_LOCAL_MACHINE\Software\WOW6432Node\Policies\Microsoft\Windows\Display
HKEY_LOCAL_MACHINE\Software\Microsoft\Ole
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Nls\CustomLocale
HKEY_LOCAL_MACHINE\Software\WOW6432Node\Microsoft\Windows NT\CurrentVersion\AppCompatFlags
HKEY_LOCAL_MACHINE\Software\Microsoft\Ole\FeatureDevelopmentProperties
HKEY_LOCAL_MACHINE\OSDATA\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags
HKEY_LOCAL_MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\SideBySide\AssemblyStorageRoots
HKEY_LOCAL_MACHINE\Software\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Image File Execution Options
HKEY_LOCAL_MACHINE\Software\WOW6432Node\Microsoft\Windows NT\CurrentVersion\GRE_Initialize
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\MUI\UILanguages\en-US
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Segment Heap
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\OLE
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\30ff19c51aaea8092ce62d1a8c33fab79ba12e90ac9a56475dcda3f2.exe
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\SdbUpdates
HKEY_LOCAL_MACHINE\Software\WOW6432Node\Microsoft\OLE\Tracing
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\SdbUpdates\ManifestedMergeStubSdbs
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Policies\Microsoft\Cryptography\Configuration
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\AppModel\Lookaside\user
HKEY_LOCAL_MACHINE\Software\WOW6432Node\Policies\Microsoft\MUI\Settings
HKEY_LOCAL_MACHINE\Software\Microsoft\Wow64\x86
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Disable8And16BitMitigation
Show all (34 total)

Registry Set (Top 25)

Services Started (Top 15)

Services Opened (Top 15)

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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