MALICIOUS — virussign.com_ed87b4379e26aedac27645ecc377d4b0.vir
MALICIOUS — virussign.com_ed87b4379e26aedac27645ecc377d4b0.vir is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (79/100), attributed to the Copak family. 4 of 55 detection engines flagged it, exhibiting 1 ATT&CK technique.
Identification
- SHA-256:
de9589149ee7911b36953bbf130022ef3bb5cfae633365dff21a48d49940e52c - SHA-1:
98b2c8126dd50c53ec93510b25536cdff51366cf - MD5:
ed87b4379e26aedac27645ecc377d4b0 - imphash:
6ed4f5f04d62b18d96b26d6db7c18840 - ssdeep:
1536:oLrMrQBY7JCrHkSKT7iqwHg2KyNsMc2fCzwXvdfNnCER2Sy:oL/S7AHbO7i+2Ky5DfrF9CER2Sy - TLSH:
T17C35F293565D3C8CE5835DC282E424CD9B709621CBD3DF444670DACA231AA7B1DCBAE4 - Submitted as: virussign.com_ed87b4379e26aedac27645ecc377d4b0.vir
- File type: pe · Size: 58112 bytes
- Verdict: malicious (79/100) · Family: Copak
Source: VirusSign · first seen 2026-08-18T00:00:00.000Z · SHA-256 verified
Detections (4 of 55 engines)
- MalwareAnalyser heuristics (entropy/packer): high-entropy-sections:.bss
- Microsoft Defender: Trojan:Win32/Copak.GPAD!MTB
- Emsisoft (Emergency Kit): Gen:Variant.Cerbu.246963
- 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: 4 finding(s), e.g. process hollowing in tsk_62b3bd51ea (pid 8528) (rule
windows.hollowprocesses.HollowProcesses) - memory signal, weight 0.70, confidence 0.85 - Contacted 24 external host(s) at runtime (21 HTTP) - network signal, weight 0.40, confidence 0.80
- Packing/obfuscation: high-entropy-sections:.bss - 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)
108 behavior events · 0 ATT&CK techniques · 6 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
- licensing.mp.microsoft.com
- windows.msn.com
- oneocsp.microsoft.com
- www.msn.com
Dropped files
- C:\Users\analyst\AppData\Local\Temp\tsk_62b3bd51eabd4d78.exe -
162562c85c1a89b3e91be4ad8c7063ef4a064249d456b442b9a6576dadd63f12 - 9336c5aa4e9a365efda6aa0bf02baf2777509aba83b309d5ab11cafbab475925 -
9336c5aa4e9a365efda6aa0bf02baf2777509aba83b309d5ab11cafbab475925 - e9fca914dfabf2345d639e02a7918b7cafe4c20a446e7bbc9b4ae8fb9d673e2b -
e9fca914dfabf2345d639e02a7918b7cafe4c20a446e7bbc9b4ae8fb9d673e2b - 3f021eee160fb5a05c361c37946d725254a5104b3936b8fb914adc6c98d1d47f -
3f021eee160fb5a05c361c37946d725254a5104b3936b8fb914adc6c98d1d47f - 097f98939950c46d2db5936c6f1d8207ec59c4b6689c04a6e2338b3fff0a1610 -
097f98939950c46d2db5936c6f1d8207ec59c4b6689c04a6e2338b3fff0a1610 - b974f0140335514b1adca143d474f3505aed569cd9cb0106aa2506d2696d3f8c -
b974f0140335514b1adca143d474f3505aed569cd9cb0106aa2506d2696d3f8c
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=1787743728&P2=404&P3=2&P4=HsmtQrpRXPBrriueO%2bla5IGU%2bCGO6tRCY5j7khFWaLdqCgDMs4HJSvOl36yFoerygf%2fJBoKeswL7wZAZNcPbDw%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=1787743777&P2=404&P3=2&P4=GZkWalGMHCBmFFS%2f08XEmLj9FIpkT9KxQeIVwGBsbYOf%2btUfm5pRLFkgTy%2bbjwEri%2fmJcy54Z1FhDkRYZMMJ9A%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded IP addresses
- 48.192.143.121
- 52.110.12.25
- 20.184.175.15
- 52.110.12.56
- 20.247.184.142
- 57.155.101.212
- 4.230.171.124
- 135.232.92.137
- 135.232.92.97
- 52.168.117.171
- 20.236.44.162
- 52.123.129.14
- 40.99.133.210
- 20.42.65.90
- 135.234.160.245
- 4.150.223.112
- 40.79.150.123
- 52.123.252.202
- 203.26.79.13
- 52.148.114.188
- 135.233.95.80
- 52.110.12.33
- 52.110.12.45
- 72.154.7.110
More Copak samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report