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: e9062e470323658f1e202fb13fb7f0cd20aeb672d769c36a762ab2525d2163ea
SHA-1: 1c7e718605a23172dd43a59eadc99588a1a12129
MD5: 9f52f5771022fe519d28819a428c47ae
imphash: e60d0e6577962a1096407913ed128742
ssdeep: 6144:Nh9wv1Ut3nh9wv1UWnIjVS/1iMa9J2eySYpi8e:Nh9wtah9wtpw21iMaP2ef8e
TLSH: T1CF4212473192DCEAD0E7FD5AAC08C68DF9864FA84D30AD404156A7DF608AB1760C8D9C
Submitted as: wlogon.dll
File type: pe · Size: 201728 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.mmJfa4pdRVd
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 17 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)

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

Dropped files

C:\Windows\System32\net.cpl - 93936cbd0f6c74cf4dcb609b81ea1a4743e723bd7e7d814942d6cbd090cc7767
C:\Windows\System32\lcss.exe - ee3fa4941ed3dd77fc3ea0a0b921cbab4dde54f803cfe860d6844e9caf6d5afa
C:\Windows\System32\crypto.dll - 3fe9685433f3adfcef850320ed675fdf03fb390aee183b8d23483d79605342f8
C:\Windows\System32\wlogon.dll - c016aaa7d3142428fb06da1455752fee9082ec128f00039478169ee360d1c7f3

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=1787666422&P2=404&P3=2&P4=jdVkNtnk7Egw8Dase0iV62cSpgN%2fFFferrzNL%2feFF4BuUg61oO0jyr3hQ3YZQkat0SJ6FjFiyJdR8iGFm%2bjToQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com

Embedded IP addresses

20.184.175.18
20.247.184.197
4.247.188.233
4.230.171.124
74.179.77.204
20.165.94.54
20.236.44.162
52.123.129.14
52.123.128.14
172.178.240.163
52.123.252.230
203.26.79.13
72.154.7.103
52.148.114.188
20.165.94.46
52.110.12.26
52.110.12.44

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report