MALICIOUS — virussign.com_9cb21979de549773fe1662f354ec40e0.vir

MALICIOUS — virussign.com_9cb21979de549773fe1662f354ec40e0.vir is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (89/100), attributed to the Cuegoe family. 4 of 52 detection engines flagged it.

Identification

• SHA-256: fb90835a8fc47b09fb605b62779954b02bb24c6baf9d63a5949ff238004cdc96
• SHA-1: 0867b7cd797237680194b5759153f4b020baca32
• MD5: 9cb21979de549773fe1662f354ec40e0
• imphash: 6dca3e9fb3928bbdb54dbce669943ec8
• ssdeep: 12288:wU5rCOTeiDJ3GuthjSXfT1NGbbWu4Qz8IoaZ4ldNZ+3/v+I9hUG2VA:wUQOJDtGut1g7HYWu3z8IoaZgdNGEA
• TLSH: T15E4ED0CE5100F741D973AF5225546DCE24A2B8D2A8753E8C0BC2F03B12F5D27BC6A5A9
• Submitted as: virussign.com_9cb21979de549773fe1662f354ec40e0.vir
• File type: pe · Size: 667648 bytes
• Verdict: malicious (89/100) · Family: Cuegoe

Source: VirusSign · first seen 2026-08-04T00:00:00.000Z · SHA-256 verified

Detections (4 of 52 engines)

• ClamAV (daily): Win.Trojan.Cuegoe-6336261-0
• YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
• Microsoft Defender: TrojanDownloader:Win32/Upatre
• Kaspersky (KVRT): HEUR:Backdoor.Win32.Salgorea.gen

Why this verdict

The malicious score of 89/100 is the fusion of 2 weighted signals:

• ClamAV (daily) flagged Win.Trojan.Cuegoe-6336261-0 (rule Win.Trojan.Cuegoe-6336261-0) - engine signal, weight 0.90, confidence 0.95
• YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.35, confidence 0.70

Dynamic analysis

No runtime behaviour was captured for this sample, so the analysis above is static only. That is a limit of this run rather than evidence the sample does nothing.

Embedded URLs

• http://schemas.microsoft.com/SMI/2005/WindowsSettings
• http://schemas.microsoft.com/ado/2007/08/dataservices/metadata
• http://schemas.microsoft.com/ado/2007/06/edmx
• http://schemas.microsoft.com/ado/2006/04/edm
• http://schemas.microsoft.com/ado/2007/05/edm
• http://schemas.microsoft.com/ado/2008/01/edm
• http://www.w3.org/2001/XMLSchema-instance
• http://schemas.microsoft.com/ado/2008/01/edm:OpenType
• http://schemas.microsoft.com/ado/2008/09/edm
• http://schemas.microsoft.com/ado/2006/04/edm/ssdl
• http://schemas.microsoft.com/ado/2009/02/edm/annotation
• http://schemas.microsoft.com/ado/2007/08/dataservices/scheme
• http://www.w3.org/2005/Atom
• http://www.w3.org/2000/xmlns/
• http://schemas.microsoft.com/ado/2006/04/edm/ssdl:StoreGeneratedPattern

Embedded domains

• schemas.microsoft.com
• www.w3.org

File paths

• D:\:p:
• f:\dd\tools\devdiv\EcmaPublicKey.snk
• U:\:c:j:q:x:
• P:\:d:

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report