MALICIOUS — virussign.com_cf937ae5b7002eb076a8bfa7738d2400.vir
MALICIOUS — virussign.com_cf937ae5b7002eb076a8bfa7738d2400.vir is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (93/100), attributed to the Convagent family. 3 of 55 detection engines flagged it, exhibiting 2 ATT&CK techniques.
Identification
- SHA-256:
675d559146fca5e03f1d1c7876d41b93e86ff16eb9744bf1ab0ec43a85356718 - SHA-1:
5af2056b34152897d14209d36dc0a1baf6667bf3 - MD5:
cf937ae5b7002eb076a8bfa7738d2400 - imphash:
55af0e3f3caf77df1f3eb49f79375621 - ssdeep:
12288:6Gah3npArWaS+SCWch2tqggApgGRo++q46rljbIXAkONy9XZRtr/6AK8tY3Gu:6Ga6nS+vWUkqggmo++q/JIXAkBRZtju - TLSH:
T1C451F199825BB121FDF6E894EC506CFD8823B06CA435E95C5A03E85DA4F1D33E5F00A9 - Submitted as: virussign.com_cf937ae5b7002eb076a8bfa7738d2400.vir
- File type: pe · Size: 860672 bytes
- Verdict: malicious (93/100) · Family: Convagent
Source: VirusSign · first seen 2026-08-20T00:00:00.000Z · SHA-256 verified
Detections (3 of 55 engines)
- YARA: Yara-Rules community: YR_AntiDebug_Checks
- Microsoft Defender: flagged
- Kaspersky (KVRT): VHO:Trojan.Win64.Convagent.gen
MITRE ATT&CK
Why this verdict
The malicious score of 93/100 is the fusion of 7 weighted signals:
- 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 19 external host(s) at runtime (16 HTTP) - network signal, weight 0.40, confidence 0.80
- Anti-analysis: T1622 - dynamic signal, weight 0.40, confidence 0.75
- YARA: Yara-Rules community flagged YR_AntiDebug_Checks (rule
YR_AntiDebug_Checks) - engine signal, weight 0.35, confidence 0.70 - Dropped 1 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
Dynamic analysis (windows)
5328 behavior events · 1 ATT&CK techniques · 3 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
- settings-win.data.microsoft.com
Dropped files
- C:\Users\analyst\AppData\Roaming\800e9cc0f9ff6d48.bin -
a2021a2a75552b949be0a889cb6d9ca3e059de7e844dcc0ef433a1c915f9213d - 4559b00f5743d4e937f51a5508569a9d25b56cadded86f4150ee1b9f30c7abdb -
4559b00f5743d4e937f51a5508569a9d25b56cadded86f4150ee1b9f30c7abdb - 35340919aa79e23a29bdebe43552813db446c304794e62c93c9bad2db7574b80 -
35340919aa79e23a29bdebe43552813db446c304794e62c93c9bad2db7574b80
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=1787850678&P2=404&P3=2&P4=MzStYdsJ8dqMVi2U8i4G3Gvvs9IvXt%2bnbMh5qyvWInx9L%2fgLt%2bvTWT6v1v5ZoHkpuswbv4NlRHF0xBdix%2fOqAA%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded IP addresses
- 13.69.116.109
- 52.123.252.245
- 4.247.188.224
- 4.230.171.124
- 4.144.132.114
- 85.210.196.11
- 135.233.95.144
- 20.184.175.18
- 74.178.240.51
- 4.150.223.100
- 52.123.129.14
- 20.236.44.162
- 52.123.128.14
- 172.178.240.162
- 203.26.79.13
- 72.145.35.103
- 74.178.76.44
- 52.148.114.188
- 52.110.12.38
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Analyzed on MalwareAnalyzer by Cyble · Open interactive report