MALICIOUS — virussign.com_a36621c4090ee587bf78eec644a54970.vir
MALICIOUS — virussign.com_a36621c4090ee587bf78eec644a54970.vir is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (79/100), attributed to the Barys family. 4 of 55 detection engines flagged it, exhibiting 1 ATT&CK technique.
Identification
- SHA-256:
d67d7ca648b2be5a30f5289ffdc649d007388a9e92e1bcb22ec69b3bb0fb318f - SHA-1:
d58874ea6dcc7537db52ec3b77bf9d11ad30d4e7 - MD5:
a36621c4090ee587bf78eec644a54970 - imphash:
10bc1dfc3488d74809706ca57a099571 - ssdeep:
768:sjzeEMu1QKZW5f3SPs6hKGZAAdyNnFgOysJYedx4oPs0a0P/m8Jz254A6X5Dl+k:sjVzZW9SzZvdin6OyExzsj8vO - TLSH:
T19435022291E8A7DDF2E16AAF2D512CCD9A94E5F2CE57345CB859D21F20820030E9F47D - Submitted as: virussign.com_a36621c4090ee587bf78eec644a54970.vir
- File type: pe · Size: 60416 bytes
- Verdict: malicious (79/100) · Family: Barys
Source: VirusSign · first seen 2026-08-19T00:00:00.000Z · SHA-256 verified
Detections (4 of 55 engines)
- MalwareAnalyser heuristics (entropy/packer): UPX
- Microsoft Defender: flagged
- Emsisoft (Emergency Kit): Gen:Variant.Barys.510186
- 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_30a903711c (pid 4516) (rule
windows.hollowprocesses.HollowProcesses) - memory signal, weight 0.70, confidence 0.85 - Contacted 24 external host(s) at runtime (19 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)
108 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_30a903711c7a4094.exe -
bdbbac77abc0d93c24e6304a59402716a3436aa8b3a55900a43b002ce93f57e9 - 6458f597cd746f6e0a4594741cc53cc05c64280cf12b77bc3b34ac8967718259 -
6458f597cd746f6e0a4594741cc53cc05c64280cf12b77bc3b34ac8967718259 - 88069db3e241a373f548d964df17fe4fd7da7d1a7dc4034db561470c58681d44 -
88069db3e241a373f548d964df17fe4fd7da7d1a7dc4034db561470c58681d44 - 587f388adcd52586fa316f28a113ae8dea5d0d42da7d3e9dd819a490a3b1ab77 -
587f388adcd52586fa316f28a113ae8dea5d0d42da7d3e9dd819a490a3b1ab77 - 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=1787783178&P2=404&P3=2&P4=P5Cv1V1FPWA5MIa4EDwPz4Q7IUu0DJgd5sgr6tciLMr0Ka201RUKIg8yKcqS0fhFaF7PrXx0WdTiofK5YNu7IQ%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=1787783213&P2=404&P3=2&P4=QYvkXoK2wYc83ZZ0pAZoArcRf76BOcAjCVHA2R3pM0jCKob1I05bBHGU3oO8CH1JA9JKZcWEWqljmHKooq3RPw%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded IP addresses
- 20.184.175.21
- 52.110.12.51
- 52.110.12.53
- 57.155.104.224
- 4.230.171.124
- 4.144.132.114
- 135.233.95.144
- 135.233.95.135
- 51.116.246.105
- 74.178.240.61
- 92.223.78.30
- 20.76.201.171
- 52.123.128.14
- 52.123.129.14
- 20.184.175.5
- 135.233.45.223
- 57.154.63.210
- 52.123.252.229
- 203.26.79.13
- 135.232.92.34
- 52.148.114.188
- 72.153.5.61
- 52.110.12.18
- 52.110.12.56
More Barys samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report