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:
94ac65e17ca4f2b9e36adfe8ec6d812e767ea172369b0150bd89b717300b89f9 - SHA-1:
9cade71d83f000c8a0c49f8223ae9b7289cbd5ea - MD5:
922447653ed73e34f3cfcc068d083518 - imphash:
e60d0e6577962a1096407913ed128742 - ssdeep:
3072:IyrN/sVywaEj1UsEOBYJwyrN/sVywaEj1UsdZSjK:Nh9wv1Ut3nh9wv1UvjK - TLSH:
T1D03D0107B652D4B9C2E3BD646D68E21DB8528E980935AD802D052FDB501EF27B5E0FCC - Submitted as: wlogon.dll
- File type: pe · Size: 132096 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.imJfa4pdRVd
- 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)
315 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\lcss.exe -
542cde8bedcf00ce19d197aedc782b1ab6d51aef3e873c6b1cfc09a8a677c1c1 - C:\Windows\System32\wlogon.dll -
a07976ec6379407587c269beb6a921169d49354e2ff288f147c04aba6f7401b8 - C:\Windows\System32\net.cpl -
93e8166a128f0c5437a72622b7d3ce2cd3ead33633c2e14468ffe3b79c6cfb98 - C:\Windows\System32\crypto.dll -
6e6b02bb3bdef5b62018280aa34d6c32909d595416f1b368a41677b772b42b1f
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=1787677175&P2=404&P3=2&P4=BlTYeJ3eF9EoQIzeeuXvgwjDFnDysV%2bZtyzzuWnju0SRnGS3FCTjZTPLItnF0%2f8Q1C9nRgGrMOFsGzp%2baTxxQQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded IP addresses
- 20.42.73.25
- 4.230.171.124
- 85.210.193.152
- 52.253.84.76
- 57.155.101.212
- 135.232.92.137
- 135.232.92.97
- 20.42.73.24
- 52.123.129.14
- 40.99.133.210
- 20.231.239.246
- 40.104.4.2
- 52.123.128.14
- 172.178.240.162
- 135.233.45.223
- 52.123.252.223
- 203.26.79.13
- 72.153.5.137
- 52.148.114.188
- 74.178.232.29
- 52.110.12.28
- 52.110.12.55
More Somhoveran samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report