MALICIOUS — ypteky.exe
MALICIOUS — ypteky.exe is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (98/100), attributed to the Mira family. 4 of 55 detection engines flagged it, exhibiting 1 ATT&CK technique.
Identification
- SHA-256:
dda0554b0c6c55859e000513131aa355b7181598159456f03faf76ccb534b67a - SHA-1:
a783c8aa8c9555771eba97d5c5af504312f497fe - MD5:
8b027df35725d8a35e0f1cfd3e492060 - imphash:
044fa07aef4575da982ff3317702d6b1 - ssdeep:
6144:OO2Wwqr+D5V4GDaFswO6Fz0sKy7Nu1ZPmG9jn+WGZO5t3UvAYZqkDvdUC1TgHVGe:Pjwqr+D5V4EwO6Fz0sK+oPmG9jnbGYqG - TLSH:
T1CF45C622511D7B2EE862C0FEC61C6E2C80A7BD8961BB83CCC967521997D65F315310FA - Submitted as: ypteky.exe
- File type: pe · Size: 265954 bytes
- Verdict: malicious (98/100) · Family: Mira
Detections (4 of 55 engines)
- ClamAV (daily): Win.Malware.Mira-6717565-0
- Microsoft Defender: Worm:Win32/Mira!rfn
- Emsisoft (Emergency Kit): Dump:Generic.Mira.632D18E4
- Kaspersky (KVRT): Trojan.Win32.Agent.nezvfi
MITRE ATT&CK
Why this verdict
The malicious score of 98/100 is the fusion of 5 weighted signals:
- ClamAV (daily) flagged Win.Malware.Mira-6717565-0 (rule
Win.Malware.Mira-6717565-0) - engine signal, weight 0.90, confidence 0.95 - 1 behavioral detection(s): Registry Run Key Persistence [high] (rule
tl-run-key) - dynamic signal, weight 0.60, confidence 0.90 - Observed at runtime: Registry Run Key Persistence (T1547.001) (rule
Registry Run Key Persistence) - dynamic signal, weight 0.40, confidence 0.90 - Contacted 29 external host(s) at runtime (21 HTTP) - network signal, weight 0.40, confidence 0.80
- persist via registry run key (rule
persist via registry run key) - capa signal, weight 0.35, confidence 0.60
Dynamic analysis (windows)
177 behavior events · 1 ATT&CK techniques · 0 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
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=1787732148&P2=404&P3=2&P4=ZeLyfaCdEdKv1nEV%2fy7vZ7O8KjXQYAAYdDXdGRukVPXqXewRSY7RsUEtpxunIuvQOV2MGLte7bOAumYJMaZ%2b%2bA%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded domains
- fstream-inst.cc
Embedded IP addresses
- 203.26.79.13
- 135.232.92.34
- 4.150.223.100
- 52.123.252.198
- 85.210.193.152
- 4.230.171.124
- 52.230.59.222
- 135.233.95.144
- 20.184.175.18
- 74.178.240.51
- 20.76.201.171
- 52.123.128.14
- 52.123.129.14
- 52.168.117.171
- 52.110.12.45
- 172.178.240.161
- 52.148.114.188
- 20.184.175.6
- 52.168.112.67
- 20.165.94.46
- 72.154.7.102
- 48.211.4.16
- 52.123.252.230
- 52.110.12.32
- 52.110.12.49
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Analyzed on MalwareAnalyzer by Cyble · Open interactive report