MALICIOUS — net.cpl

MALICIOUS — net.cpl 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: 3977a6f6974c408cad350f2fec28f3819db6d6a956da645dde4ae46749fc6546
SHA-1: 752b9827587c2212c195e0ea05a8eceb0c8d68e9
MD5: a69c592b5afccd096eef4b04f9b2c470
imphash: e60d0e6577962a1096407913ed128742
ssdeep: 3072:IyrN/sVywaEj1UsEOBYJwyrN/sVywaEj1UsexG+n6qLOmH+GSGI1bki02KMHc1:Nh9wv1Ut3nh9wv1UF1NLOaJ9Ipk5CHC
TLSH: T13A42120BA2905AF1D0E3FC914CB8D25EA8812FB80D2E4EC066135BDF5095B6B59E4F4D
Submitted as: net.cpl
File type: pe · Size: 203776 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 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)

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

Dropped files

C:\Windows\System32\net.cpl - aaffa7265ec1ade0783cacc14a47cad6e2fa830acec7c96b0432087dc900fe5f
C:\Windows\System32\wlogon.dll - d14b35ff447abc2605f596770b0f5ac68ce486e0d0ab8649762b7fd2634b7b67
C:\Windows\System32\crypto.dll - 1df4a35dfe99deec1e169614e9b91b0df86942cd45a0bd02657f128a28398778
C:\Windows\System32\lcss.exe - bb7119ecfdb97002f98e26ecd4df0a2307aa79bfde92ea9f7483ffda92c6b722

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=1787665766&P2=404&P3=2&P4=Asmpk901yTwN2LPeY%2bqPVNJcFBq1xbIdrzxC3%2fEsaA5KRS7IQYU8PsbFAPUpizybCZ5QaL1gFMIpS%2bsIs7wkpw%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com

Embedded IP addresses

52.123.252.216
52.168.117.175
52.230.59.222
20.247.184.197
4.230.171.124
85.210.193.152
40.84.85.40
74.178.240.61
20.184.175.23
135.233.95.135
52.123.252.219
20.76.201.171
52.123.128.14
52.123.129.14
203.26.79.13
135.233.45.223
135.234.160.245
72.154.7.105
74.178.76.44
52.148.114.188
52.110.12.20
52.110.12.56

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report