SUSPICIOUS — virussign.com_26818a3586123265aad624b8e2fb74a0.vir
SUSPICIOUS — virussign.com_26818a3586123265aad624b8e2fb74a0.vir is a pe sample analyzed by MalwareAnalyzer by Cyble with a suspicious verdict (48/100). 4 of 55 detection engines flagged it, exhibiting 1 ATT&CK technique.
Identification
- SHA-256:
df9106fec804b4f44bec8a89ff9526ab4e263f822efec309295e22a9b189a44c - SHA-1:
23d90fe5d3aff2aeb5adbfede3c6a0f105409cdb - MD5:
26818a3586123265aad624b8e2fb74a0 - imphash:
81d191c273f38a9ff67b18ec318f2d62 - ssdeep:
768:ggHCvMk5njYMBj6YAfd6SxOSJKBCNChCz82wYV6ZJIAhnc6qwRoJJZt+aSVLORU:3CNBH7SJwB9MYlJnhqzvCaCYKrNi - TLSH:
T1AA350292465F335DDDE0749A6C081FFC56B28A0782C0512F6B1870B1EA419B36CFDA2B - Submitted as: virussign.com_26818a3586123265aad624b8e2fb74a0.vir
- File type: pe · Size: 60416 bytes
- Verdict: suspicious (48/100)
Source: VirusSign · first seen 2026-08-20T00:00:00.000Z · SHA-256 verified
Detections (4 of 55 engines)
- MalwareAnalyser heuristics (entropy/packer): UPX
- Microsoft Defender: Trojan:Win32/Copak.GPAC!MTB
- Emsisoft (Emergency Kit): Gen:Variant.Barys.510186
- Kaspersky (KVRT): UDS:Trojan.Win32.Copak.cxnvy
MITRE ATT&CK
Why this verdict
The suspicious score of 48/100 is the fusion of 3 weighted signals:
- Contacted 19 external host(s) at runtime (20 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)
111 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
- windows.msn.com
- oneocsp.microsoft.com
- www.msn.com
- officeclient.microsoft.com
Dropped files
- C:\Users\analyst\AppData\Local\Temp\tsk_a26c2e785e954026.exe -
ea4ec0335d5d0560947e95840c09359ee3fb133e56b43ebb596a03186b2709eb - a68b658b93340d319eb6d6088970ee903209be5945affb4b0a8aecfa7340a8d1 -
a68b658b93340d319eb6d6088970ee903209be5945affb4b0a8aecfa7340a8d1 - d5cc47b208e3f0993fcc51b6d25ef5850539b2176399df63b298fc91262f4d1f -
d5cc47b208e3f0993fcc51b6d25ef5850539b2176399df63b298fc91262f4d1f - 932acc1cc49fb1a857a5af42b7a9741783da5ee5a7e4f68de7a258f3fb4bb487 -
932acc1cc49fb1a857a5af42b7a9741783da5ee5a7e4f68de7a258f3fb4bb487 - 6577bced8e6b4a8c1b39f877a6ec08a1f4773a79ef02fbed78b32e00db406897 -
6577bced8e6b4a8c1b39f877a6ec08a1f4773a79ef02fbed78b32e00db406897
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=1787851253&P2=404&P3=2&P4=YNtE7eOU%2bRvIRxpOQiLWBmxcOpsinDFyLdGFUVJLGlkV1nEg0jrdqxJBMlFXThl1qMRWM1m0QqcQpGltNVzVzQ%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=1787851319&P2=404&P3=2&P4=Fhn0GsX6fJFJ9ZtmaClx4Khu8JiE9k7Ps98jejuAKHh4cVWu8gp%2fc4f46VpdzP56EeuuzX1MEhiU8KAwOxIfcQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded IP addresses
- 20.184.175.18
- 4.230.171.124
- 57.154.63.210
- 20.247.185.124
- 74.178.76.128
- 20.184.175.14
- 74.178.76.54
- 20.165.94.63
- 52.123.128.14
- 20.112.250.133
- 20.89.1.10
- 203.26.79.13
- 135.233.45.223
- 74.178.232.29
- 52.148.114.188
- 4.247.188.224
- 48.211.4.16
- 72.145.35.101
- 52.110.12.47
Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report