Skuggaheimar/Threat Intelligence/Borr Loader
BORR LOADER
BORR
MALWARE
ECRIME
Threat IntelligenceMalwareMay 4, 2025•15 min read

Borr Loader: Threat Intelligence Profile

Information stealer loader

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Borr Loader (also known as Borr) is a malware active since 2019. Information stealer loader. Key characteristics include: lightweight loader/stealer, browser credentials, system info, cryptocurrency wallets.

Overview & Background

Information stealer loader. First identified in 2019, this threat is attributed to eCrime.

Threat Assessment

Borr Loader remains an active threat. Organizations should implement detection rules and monitor for indicators associated with this malware.

Technical Analysis

Borr Loader employs the following capabilities and techniques:

MITRE ATT&CK Mapping

TacticTechniqueUsage
Initial AccessT1566.001 Phishing AttachmentCommon delivery vector
ExecutionT1204.002 Malicious FileUser-triggered execution
PersistenceT1547.001 Registry Run KeysAutostart persistence
Defense EvasionT1027 Obfuscated FilesPayload obfuscation
C2T1071.001 Web ProtocolsHTTP/HTTPS C2

Detection & Defense

Defend Against Borr Loader

Mjolnir Security provides detection and response capabilities against Borr Loader and similar threats.

Threat DetectionIncident ResponseThreat HuntingMDR ServicesThreat Intelligence
  • Proactive Threat Hunting Hunt for Borr Loader indicators and TTPs within your environment.
  • Threat Intelligence Monitor Borr Loader campaigns and infrastructure changes.
  • 24/7 Incident Response Rapid containment and forensic investigation. Call +1 833 403 5875.
Written by: Mjolnir Security  |  Published: May 4, 2025
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