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: 4209cace74853f72cb7daa5f9f6c8a86d779cd2ec6cfaaf04d5ee5f2b0d87b12
SHA-1: 95decffc8eaff95d823fbc8c9f59e6dd77906b89
MD5: c57f73f0095c84b8052679139fe9c58d
imphash: e60d0e6577962a1096407913ed128742
ssdeep: 3072:IyrN/sVywaEj1UsEOBYJwyrN/sVywaEj1UsIwawMBB:Nh9wv1Ut3nh9wv1UbwMBB
TLSH: T11A3D02077551D4F8C8E3FBA51EA8C25EF8904F640927CD402A026F9B901D76BA5E8ECD
Submitted as: net.cpl
File type: pe · Size: 131584 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.imJfa4pdRVd
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 20 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)

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

Dropped files

C:\Windows\System32\lcss.exe - 14794ab230f29537f8a37977fd735da3d7ccbd8fd5be60a0e7018c533df7a82b
C:\Windows\System32\net.cpl - 62c658f9dd2bb32daf3a82a1c75d0756f47b513bfae8222aca344d2b5fd976d0
C:\Windows\System32\crypto.dll - 860ec3310a81d4d612de97138eb6cc79244c0d7d7d8f7b71b8bd30367979bf60
C:\Windows\System32\wlogon.dll - 25a56c8e243dbd5cb49328672e57cd93103a6b4114664e86892fba072f761168

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=1787686003&P2=404&P3=2&P4=i4Nf%2fy5p%2fu%2fDS4gEIofd9yUrfPNPgZOYewPdSOw9Bf7qWptJr62i6s66joFvke%2bs7Aii61WCyG1qp18dJ3uw2Q%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com

Embedded IP addresses

74.178.232.29
51.116.253.168
52.230.59.222
4.230.171.124
40.84.85.40
135.232.92.137
20.165.94.54
52.138.229.67
135.233.95.144
20.231.239.246
52.123.129.14
52.168.117.168
203.26.79.13
135.233.45.223
172.66.2.5
72.154.7.109
52.148.114.188
52.110.12.28
52.110.12.18
162.159.142.9

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report