MALICIOUS — virussign.com_d8a3f4ab3c39c3186a9e2b1ba00022b0.vir

MALICIOUS — virussign.com_d8a3f4ab3c39c3186a9e2b1ba00022b0.vir is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (95/100), attributed to the Expiro family. 6 of 55 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

• SHA-256: d940952ae3b0048a532c7e5a09915728372e0066600396e076649ebe8647a9bf
• SHA-1: cd9a73717c32f543f7b98438a40c8c778f81906c
• MD5: d8a3f4ab3c39c3186a9e2b1ba00022b0
• imphash: 3801cf0cc42427f1569fb78d2d1b45a8
• ssdeep: 24576:UTuvafQze4LHobYAWlqkbUMqMpKJG0Yf7/K:UTuifQ64LHobjs5C
• TLSH: T1D052190015037AA7E7EFB7111831579CF617B2B926692B582F1AD01E406FF378BD248A
• Submitted as: virussign.com_d8a3f4ab3c39c3186a9e2b1ba00022b0.vir
• File type: pe · Size: 1001582 bytes
• Verdict: malicious (95/100) · Family: Expiro

Source: VirusSign · first seen 2026-08-18T00:00:00.000Z · SHA-256 verified

Detections (6 of 55 engines)

• capa (capabilities): capability:collection/keylog
• ClamAV (daily): Win.Ransomware.Expiro-9975896-0
• YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
• Microsoft Defender: Virus:Win64/Expiro.DE!MTB
• Emsisoft (Emergency Kit): Win64.Ransom.A
• Kaspersky (KVRT): HEUR:Trojan.Win64.AsowWiper.c

MITRE ATT&CK

• T1057
• T1056.001

Why this verdict

The malicious score of 95/100 is the fusion of 5 weighted signals:

• ClamAV (daily) flagged Win.Ransomware.Expiro-9975896-0 (rule Win.Ransomware.Expiro-9975896-0) - engine signal, weight 0.90, confidence 0.95
• capture keystrokes (rule capture keystrokes) - capa signal, weight 0.40, confidence 0.80
• YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.35, confidence 0.70
• Embedded network infrastructure: http://www.7-zip.org/ - static signal, weight 0.35, confidence 0.60
• enumerate processes (rule enumerate processes) - capa signal, weight 0.20, confidence 0.60

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://www.7-zip.org/

Embedded domains

• ug.mi.oc.co
• schemas.microsoft.com
• www.7-zip.org

More Expiro samples · Latest analyzed threats · ATT&CK coverage

Analyzed on MalwareAnalyzer by Cyble · Open interactive report