MALICIOUS — virussign.com_2e25131cf3c780b91a7459fc543b1190.vir
MALICIOUS — virussign.com_2e25131cf3c780b91a7459fc543b1190.vir is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (98/100), attributed to the Zusy family. 5 of 55 detection engines flagged it, exhibiting 3 ATT&CK techniques.
Identification
- SHA-256:
bbc1d03dde8c463d1e193694ebc013f9950c8a3babfa77d6afc539cac41595e5 - SHA-1:
fc99a6969156f6a88945f068d78b499780b1ac41 - MD5:
2e25131cf3c780b91a7459fc543b1190 - imphash:
3d5ac860af15f9dea064828357396ba1 - ssdeep:
3072:47ueG9ErYsUhICDZZh6Ug+XD4r7d9b+2KIzLL8oAFRWtz0CJsO:47uF9ErUGCDTAU3XsrO2KejAFRLCR - TLSH:
T13241F16AA2124642D7319E722DA80F2C452391B0D1FF084C459BD12E1EF7D6BB3643EE - Submitted as: virussign.com_2e25131cf3c780b91a7459fc543b1190.vir
- File type: pe · Size: 183296 bytes
- Verdict: malicious (98/100) · Family: Zusy
Source: VirusSign · first seen 2026-08-18T00:00:00.000Z · SHA-256 verified
Detections (5 of 55 engines)
- ClamAV (daily): Win.Malware.Zusy-9654284-0
- YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
- Microsoft Defender: Worm:Win32/Wenper
- Emsisoft (Emergency Kit): Gen:Trojan.ShellHook.lGZ@a8EaTcn
- Kaspersky (KVRT): Worm.Win32.Wenper.a
MITRE ATT&CK
Why this verdict
The malicious score of 98/100 is the fusion of 7 weighted signals:
- ClamAV (daily) flagged Win.Malware.Zusy-9654284-0 (rule
Win.Malware.Zusy-9654284-0) - engine signal, weight 0.90, confidence 0.95 - 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 22 external host(s) at runtime (18 HTTP) - network 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 - Dropped 3 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
- Observed at runtime: Modify Registry (T1112) (rule
Modify Registry) - dynamic signal, weight 0.12, confidence 0.90
Dynamic analysis (windows)
311 behavior events · 2 ATT&CK techniques · 4 dropped files.
Runtime network
- www.msftconnecttest.com
- rb.symcd.com
- rb.symcb.com
- inference.location.live.net
- to-do.office.com
- staging.to-do.officeppe.com
- teams.cloud.microsoft
- outlook.office.com
- outlook.office365.com
- outlook.cloud.microsoft
- ctldl.windowsupdate.com
- login.live.com
- ocsp.digicert.com
- desktop-hsgcbep
- v20.events.data.microsoft.com
- config.edge.skype.com
- windows.msn.com
- oneocsp.microsoft.com
- www.msn.com
- msedge.api.cdp.microsoft.com
Dropped files
- C:\Windows\System32\wlogon.dll -
5f50898bf751d3f34a5cae65451ef1cb85e61eb822d0ce5d3628a95f2004513d - C:\Windows\System32\crypto.dll -
8bb1ff1a7eea41a5298fd27d12aeba40024f081cc516052396ce33ddbb89f69d - C:\Windows\System32\lcss.exe -
9ba50902e2a852e25f44b9b2fe0362222a1b4128696c294fff2b06400913b98c - C:\Windows\System32\net.cpl -
2f9153338e11a491b9de72537392689c164fe72ebb148c1c7ff5ebd0a5b1755e
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=1787739689&P2=404&P3=2&P4=SWEtUIZgJGrjwOaUGDP44Oj8YgT2g5quGDf0URsduhjdwDOCTfkG565sf7c7Iw47fUI16xXS2irpHXF%2fMt17KA%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice//files/c74a5353-3e6a-42b7-94d6-9b96c560c89a/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/c74a5353-3e6a-42b7-94d6-9b96c560c89a?P1=1787739734&P2=404&P3=2&P4=Ts%2bER%2bn39MwbLjjxHhMuKURuHzbJMZTaQQdg%2bP%2fDkiYmtbjgRuxyB0zLcK9L%2fOfm6534TxDAwJvfaXb1Q9l%2bLg%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded IP addresses
- 20.42.65.93
- 85.210.193.152
- 4.230.171.124
- 52.230.59.222
- 4.247.188.233
- 74.179.77.204
- 20.165.94.54
- 51.104.15.253
- 74.178.76.128
- 203.26.79.13
- 135.233.95.80
- 20.231.239.246
- 52.123.129.14
- 40.104.4.2
- 172.178.240.162
- 52.110.12.55
- 52.110.12.44
- 52.148.114.188
- 72.145.35.97
- 52.110.12.24
- 52.110.12.33
- 20.165.94.46
File paths
- C:\unm0ve.txt
More Zusy samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report