MALICIOUS — virussign.com_6a0e7605f2f3fb799cbde1e75d4164a0.vir
MALICIOUS — virussign.com_6a0e7605f2f3fb799cbde1e75d4164a0.vir is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (79/100), attributed to the Copak family. 3 of 55 detection engines flagged it, exhibiting 1 ATT&CK technique.
Identification
- SHA-256:
ef38554ab796e62a10463f0cf42672d0283cfe4ae5b2fde5130292f6d6fbb58b - SHA-1:
a9169557e2d18621f9bfc9459b2269e2ce5a87fb - MD5:
6a0e7605f2f3fb799cbde1e75d4164a0 - imphash:
782ba42f42a527e417f7ec83871b79ae - ssdeep:
1536:+dWx6J2K/AyTFFe47/ZAwdKJe/8OG5LfG3mA46:+dTJ9/Age47/ZHdKUqLfG - TLSH:
T13235017588B61091CEBAAF579D8C1ECD60EF6D14C22C56CAFF54B800ECC589309576AC - Submitted as: virussign.com_6a0e7605f2f3fb799cbde1e75d4164a0.vir
- File type: pe · Size: 60416 bytes
- Verdict: malicious (79/100) · Family: Copak
Source: VirusSign · first seen 2026-08-19T00:00:00.000Z · SHA-256 verified
Detections (3 of 55 engines)
- MalwareAnalyser heuristics (entropy/packer): UPX
- Microsoft Defender: Trojan:Win32/Copak.GPAC!MTB
- Kaspersky (KVRT): HEUR:Trojan.Win32.Copak.vho
MITRE ATT&CK
Why this verdict
The malicious score of 79/100 is the fusion of 4 weighted signals:
- Memory forensics: 6 finding(s), e.g. process hollowing in tsk_d992cc8bc2 (pid 7484) (rule
windows.hollowprocesses.HollowProcesses) - memory signal, weight 0.70, confidence 0.85 - Contacted 22 external host(s) at runtime (21 HTTP) - network signal, weight 0.40, confidence 0.80
- Packing/obfuscation: UPX, high-entropy-sections:UPX1 - static signal, weight 0.25, confidence 0.55
- Dropped 1 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
Dynamic analysis (windows)
109 behavior events · 0 ATT&CK techniques · 5 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
- msedge.api.cdp.microsoft.com
- windows.msn.com
- oneocsp.microsoft.com
- www.msn.com
Dropped files
- C:\Users\analyst\AppData\Local\Temp\tsk_d992cc8bc25d4530.exe -
9e2bf52aedf0fec59ca03d1ef16b630c3f973eff8dc2a29c65ba76fcc85ad1b5 - 1043e37a798f573040cf1f7c98349de83dc0bfbb16f0a235068c5b62ff955b93 -
1043e37a798f573040cf1f7c98349de83dc0bfbb16f0a235068c5b62ff955b93 - 788f9e3efd3fb4d7179f0f03d8342305acf2fee3d7a9c7d048e046d883d397a5 -
788f9e3efd3fb4d7179f0f03d8342305acf2fee3d7a9c7d048e046d883d397a5 - f8c794d908a3a6581723f9f93149f0a123ab757d6a9940824a02a73879919919 -
f8c794d908a3a6581723f9f93149f0a123ab757d6a9940824a02a73879919919 - 2413f336fe91c78fb218e569106b8175386da035a913c1a9efda6795fbc1f736 -
2413f336fe91c78fb218e569106b8175386da035a913c1a9efda6795fbc1f736
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=1787783732&P2=404&P3=2&P4=F%2fKQ1iaROzs31xWlPTpjoFPZygkwAHitIf9%2fa3yqZTA51J32BVnw8qHkXeXJYUo8lWuh%2fFXOa0IqFtuUeUw6xQ%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=1787783802&P2=404&P3=2&P4=DKJF6BE1nw%2bYqRXCTaHvXeq9udwTpPZFGPn6Mdi9yjMds6znCQEqfYhMw2g90eEi3ngwjcpbu7RZT7sLdhivKA%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded IP addresses
- 4.150.223.106
- 52.123.252.202
- 48.211.4.16
- 4.230.171.124
- 20.247.184.197
- 74.178.76.128
- 52.123.252.248
- 74.178.232.29
- 4.150.223.100
- 74.178.240.51
- 203.26.79.13
- 52.123.252.230
- 20.112.250.133
- 52.123.128.14
- 135.233.45.221
- 57.154.63.210
- 52.148.114.188
- 52.110.12.52
- 52.110.12.51
- 72.153.5.138
- 52.110.12.5
- 52.110.12.49
More Copak samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report