MALICIOUS — virussign.com_5a5fb93030b49a3cefad94aa1fc9a5f0.vir

MALICIOUS — virussign.com_5a5fb93030b49a3cefad94aa1fc9a5f0.vir is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (96/100), attributed to the Rubinurd family. 5 of 52 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

• SHA-256: 498a6f03e324b3ebff07c74f570c1dce33708043a69c6a1db60f1d56f2b5d170
• SHA-1: 16dd0305eba34b66d4f0deef5c85715e00b4a660
• MD5: 5a5fb93030b49a3cefad94aa1fc9a5f0
• imphash: 118eb37b88640d7f3f7ac979ea5687cc
• ssdeep: 384:R4xUgM2Gy9Myy4MfyzLeReRknG6u0Y4+bFvlsu4JGGeFkJdv3wP7Y1XDs6:eC2T9MyFiy50Wv/4JFfPwPsDs6
• TLSH: T17631D191C720666ED257B11638EF898EF06523AEF025E76B1AC283785CF44237C31D95
• Submitted as: virussign.com_5a5fb93030b49a3cefad94aa1fc9a5f0.vir
• File type: pe · Size: 40960 bytes
• Verdict: malicious (96/100) · Family: Rubinurd

Source: VirusSign · first seen 2026-08-14T00:00:00.000Z · SHA-256 verified

Detections (5 of 52 engines)

• YARA: MalwareAnalyser built-in: Windows_Injection_Api_Combo
• ClamAV (daily): Win.Trojan.Rubinurd-67
• YARA: MalwareAnalyser community pack: TL_Shellcode_VirtualAlloc_Exec
• Microsoft Defender: Trojan:Win32/Injector.ARA!MTB
• Kaspersky (KVRT): HEUR:Trojan.Win32.Miancha.gen

MITRE ATT&CK

• T1547.001
• T1055

YARA

• Windows_Injection_Api_Combo

Why this verdict

The malicious score of 96/100 is the fusion of 4 weighted signals:

• ClamAV (daily) flagged Win.Trojan.Rubinurd-67 (rule Win.Trojan.Rubinurd-67) - engine signal, weight 0.90, confidence 0.95
• Process injection API combination (rule Windows_Injection_Api_Combo) - yara signal, weight 0.65, confidence 0.90
• YARA: MalwareAnalyser community pack flagged TL_Shellcode_VirtualAlloc_Exec (rule TL_Shellcode_VirtualAlloc_Exec) - engine signal, weight 0.35, confidence 0.70
• persist via registry run key (rule persist via registry run key) - capa signal, weight 0.35, 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.

Registry keys

• HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

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

Analyzed on MalwareAnalyzer by Cyble · Open interactive report