MALICIOUS — wlogon.dll

MALICIOUS — wlogon.dll is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (98/100), attributed to the Somhoveran family. 6 of 55 detection engines flagged it, exhibiting 3 ATT&CK techniques.

Identification

SHA-256: 8fcd4cd2010a0e1db9c0d56021a66218ce4fe8d84c5e47415d58cb146bd39f7a
SHA-1: 9cdfcd521febd3da71ffed2381e70c668158e49a
MD5: 5ef01dde49b3d1d3e535e69efa6bb9a0
imphash: e60d0e6577962a1096407913ed128742
ssdeep: 3072:IyrN/sVywaEj1Us10nfbyrN/sVywaEj1UsaS:Nh9wv1Uveh9wv1UK
TLSH: T15B3C0107A991D4BCD5D3BCE42C94E36DF8955A2C253059803D432B5B802C7A77CA4BDE
Submitted as: wlogon.dll
File type: pe · Size: 116736 bytes
Verdict: malicious (98/100) · Family: Somhoveran

Detections (6 of 55 engines)

MalwareAnalyser heuristics (entropy/packer): UPX
ClamAV (daily): Win.Ransomware.Somhoveran-9870372-0
Detect It Easy (packer/type): DIE:Turbo Linker
Microsoft Defender: Trojan:Win32/Vindor!pz
Emsisoft (Emergency Kit): Gen:Trojan.ShellHook.hmJfa4pdRVd
Kaspersky (KVRT): Worm.Win32.Wenper.b

MITRE ATT&CK

Why this verdict

The malicious score of 98/100 is the fusion of 8 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
Detect It Easy (packer/type) flagged DIE:Turbo Linker (rule DIE:Turbo Linker) - engine signal, weight 0.35, confidence 0.70
Packing/obfuscation: UPX, high-entropy-sections:UPX1, Turbo Linker - 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)

317 behavior events · 2 ATT&CK techniques · 4 dropped files.

Dropped files

C:\Windows\System32\crypto.dll - c5ec653c7ec900745695b08803b8b88f8ca61ebe339a96c460a6de52825077fb
C:\Windows\System32\wlogon.dll - b05a06e2dd0b26f00fde84279dfc1e8ea9ba07133c12aafb6b4b26487a911acd
C:\Windows\System32\net.cpl - 77e3720b30120c0ed86d2bffec4d210cb814a5e13e81dbfbcd3b1d8ad47a4d8e
C:\Windows\System32\lcss.exe - 05defce7128cd75bb9c4d1a4bb4cf38636e9ea0792e00f6c4b0d90fe4ee1f7e1

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=1787654066&P2=404&P3=2&P4=WuhWLvU9joLffW3FwkUX6ygupxgPU6F5z1tvQOQSG2a9TXuteAzYV4DWFHtnb3%2bzeHCxKLh3G3h1yUTWDpQSvQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com

Embedded IP addresses

13.89.179.12
52.110.12.44
52.110.12.28
57.155.101.212
4.230.171.124
52.253.84.76
135.232.92.137
20.184.175.23
74.178.240.51
52.123.129.14
20.236.44.162
52.123.128.14
4.207.44.75
51.104.15.253
172.178.240.162
92.223.78.30
135.233.45.222
203.26.79.13
72.154.7.97
52.148.114.188
52.110.12.49
74.178.76.44

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report