MALICIOUS — wlogon.dll
MALICIOUS — wlogon.dll is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (97/100), attributed to the Somhoveran family. 5 of 55 detection engines flagged it, exhibiting 3 ATT&CK techniques.
Identification
- SHA-256:
b74c63061d1a2c650b2e0a95cd847f181ab743d6001167ba67dddd55847ffade - SHA-1:
4e79cbc342e9a02f1e09cc880706f73274dc8ff0 - MD5:
0506e354f72fce17c6e6066d49617f92 - imphash:
e60d0e6577962a1096407913ed128742 - ssdeep:
3072:IyrN/sVywaEj1Us10nfbyrN/sVywaEj1UsDwL+f0oQV9cRy4n:Nh9wv1Uveh9wv1U3FjDcUU - TLSH:
T1C53F02476D94C17CF9DBB8F868A4D36CBCD12B6C2532D8806D472B69A01CB276580ACC - Submitted as: wlogon.dll
- File type: pe · Size: 149504 bytes
- Verdict: malicious (97/100) · Family: Somhoveran
Detections (5 of 55 engines)
- MalwareAnalyser heuristics (entropy/packer): UPX
- ClamAV (daily): Win.Ransomware.Somhoveran-9870372-0
- Microsoft Defender: Trojan:Win32/Vindor!pz
- Emsisoft (Emergency Kit): Gen:Trojan.ShellHook.jmJfa4pdRVd
- Kaspersky (KVRT): Worm.Win32.Wenper.b
MITRE ATT&CK
Why this verdict
The malicious score of 97/100 is the fusion of 7 weighted signals:
- ClamAV (daily) flagged Win.Ransomware.Somhoveran-9870372-0 (rule
Win.Ransomware.Somhoveran-9870372-0) - engine signal, weight 0.90, confidence 0.95 - Observed at runtime: Windows Service (T1543.003) (rule
Windows Service) - dynamic signal, weight 0.40, confidence 0.90 - 1 behavioral detection(s): Windows Service Installation [medium] (rule
tl-service-install) - dynamic signal, weight 0.40, confidence 0.90 - Contacted 22 external host(s) at runtime (16 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 3 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
- Observed at runtime: Modify Registry (T1112) (rule
Modify Registry) - dynamic signal, weight 0.12, confidence 0.90
Dynamic analysis (windows)
312 behavior events · 2 ATT&CK techniques · 4 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:\Windows\System32\net.cpl -
6fb91b411c62c81f77d42cccd5828e222c11eb70c70273ccf9e34c295f311d98 - C:\Windows\System32\lcss.exe -
2553e750d529f70f665c5994ad9f281e36ae3fc5d999f42de429e05da64595b1 - C:\Windows\System32\crypto.dll -
2b2ccd8217efbed8fddf37e2a511aac26908a1984befe78f2b4071fefa1750d1 - C:\Windows\System32\wlogon.dll -
cd52d9ebc37c2b67552a1a5e12ea0983655ef5a9d8c18a8ed3c0a932eff88a72
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=1787655763&P2=404&P3=2&P4=T3dLDeIWQkcAWJN4N2PwcZPH1itkgZ0N2qpewpzodG2S5VxN9OcOCi8HO1nyo9kOp%2bGo3QJsw%2bfc7hNGbYkQFw%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded IP addresses
- 52.110.12.20
- 52.110.12.49
- 52.178.17.3
- 57.154.63.210
- 4.230.171.124
- 20.247.184.142
- 74.178.76.128
- 20.184.175.13
- 135.233.95.135
- 74.178.240.61
- 20.112.250.133
- 52.123.128.14
- 52.123.129.14
- 172.178.240.163
- 203.26.79.13
- 92.223.78.30
- 172.215.188.232
- 74.178.232.29
- 52.148.114.188
- 52.110.12.25
- 52.110.12.15
- 72.145.35.97
More Somhoveran samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report