MALICIOUS — virussign.com_b5b3acf565eb6417c124bcaac02592b0.vir

MALICIOUS — virussign.com_b5b3acf565eb6417c124bcaac02592b0.vir is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the Miancha family. 5 of 55 detection engines flagged it, exhibiting 4 ATT&CK techniques.

Identification

SHA-256: 8a29c4fe59e348e0a18c84d76ef028c23b8a8c25e8a1e330cffdb1304b73b4ee
SHA-1: 868d76b22ce4ac2c846bbc8c0aa5fe7a350cb70d
MD5: b5b3acf565eb6417c124bcaac02592b0
imphash: bef229bd8a414afbbd1edba1aeb00206
ssdeep: 384:f98xUHQkCIdNlK9y4/q8zLeizerFifBceQ9P+v4xgrgZJyig:WwZgBqopsiJceGXgUHyig
TLSH: T1372F8D68C768EB0CE2D6A50235C2DA8DE17277EE60A0E55716D483344CF882378B0E9D
Submitted as: virussign.com_b5b3acf565eb6417c124bcaac02592b0.vir
File type: pe · Size: 32768 bytes
Verdict: malicious (99/100) · Family: Miancha

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

Detections (5 of 55 engines)

YARA: MalwareAnalyser built-in: Windows_Injection_Api_Combo
ClamAV (daily): Win.Trojan.Kazy-6838217-0
Microsoft Defender: Trojan:Win32/Injector.ARA!MTB
Emsisoft (Emergency Kit): Gen:Variant.Downloader.849
Kaspersky (KVRT): HEUR:Trojan.Win32.Miancha.gen

MITRE ATT&CK

YARA

Windows_Injection_Api_Combo

Why this verdict

The malicious score of 99/100 is the fusion of 8 weighted signals:

ClamAV (daily) flagged Win.Trojan.Kazy-6838217-0 (rule Win.Trojan.Kazy-6838217-0) - 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
Memory forensics: 2 finding(s), e.g. SSDT hook (rule windows.ssdt.SSDT) - memory signal, weight 0.50, confidence 0.85
Observed at runtime: Windows Service (T1543.003) (rule Windows Service) - dynamic signal, weight 0.40, confidence 0.90
1 behavioral detection(s): Windows Service Installation [medium] (rule tl-service-install) - dynamic signal, weight 0.40, confidence 0.90
Contacted 20 external host(s) at runtime (16 HTTP) - network signal, weight 0.40, confidence 0.80
persist via registry run key (rule persist via registry run key) - capa signal, weight 0.35, confidence 0.60
Dropped 1 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60

Dynamic analysis (windows)

116 behavior events · 1 ATT&CK techniques · 2 dropped files.

Dropped files

C:\Users\analyst\AppData\Local\Temp\tsk_c062f739c2104c61.exe - 7738a8ff746810136e0cd6179a8fb6e0dc410e9735775101136b2de8ba3da33d
2f02ddf8f95a1ee8243394a7728d868b9edb2af3455108a2371ea76f9f260556 - 2f02ddf8f95a1ee8243394a7728d868b9edb2af3455108a2371ea76f9f260556

Embedded URLs

http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl
http://203.26.79.13/filestreamingservice//files/753bb2df-a166-494f-aa7d-5678b1ef0c56/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
http://203.26.79.13/filestreamingservice/files/753bb2df-a166-494f-aa7d-5678b1ef0c56?P1=1787735178&P2=404&P3=2&P4=VfOmTtxEgr4L%2fA2%2bcejvw8Un%2bZz2MYohIo7y7Dqv7ID82h9pMsApsUqmXKDL2RZ9VgW7hTGH7EnRr0LaorHzIA%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com

Embedded IP addresses

40.79.167.9
52.123.252.243
52.253.84.76
57.154.63.210
4.230.171.124
52.123.252.213
135.233.95.80
74.178.76.128
74.179.77.164
4.150.223.102
203.26.79.13
52.182.141.63
20.112.250.133
52.123.129.14
135.233.45.223
52.148.114.188
92.223.78.30
72.154.7.104
52.110.12.3
52.110.12.33

Registry keys

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report