MALICIOUS — net.cpl

MALICIOUS — net.cpl is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the NmJfa4pdRVd family. 6 of 55 detection engines flagged it, exhibiting 3 ATT&CK techniques.

Identification

SHA-256: a261f812e11302bdb7433bcb34a35549655ea634c318cda0b1bddd62174bd3e4
SHA-1: 53e4383d98cfd8bab678b6db1b6f365ba9dc3634
MD5: fb7a62b78ec72420e79f4b0ed631f17c
imphash: e60d0e6577962a1096407913ed128742
ssdeep: 6144:Nh9wv1Ut3nh9wv1UAcewO7NzRqv8pxWg6O0Samq+/:Nh9wtah9wtcFO79RqUPGc2g
TLSH: T13743120A7692D6F5E9E7BE533D28C28DDC80AB2C19219D401940ABCF5009B67B991FDC
Submitted as: net.cpl
File type: pe · Size: 223232 bytes
Verdict: malicious (99/100) · Family: NmJfa4pdRVd

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.nmJfa4pdRVd
Kaspersky (KVRT): Worm.Win32.Wenper.b

MITRE ATT&CK

Why this verdict

The malicious score of 99/100 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
Dropped a malicious payload (Somhoveran): net.cpl - dynamic signal, weight 0.62, confidence 0.90
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 23 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
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 - 1518b12d3a0ac175e71275df938c42b71272681ef339b567f987dc61ff1a7142
C:\Windows\System32\wlogon.dll - e9062e470323658f1e202fb13fb7f0cd20aeb672d769c36a762ab2525d2163ea
C:\Windows\System32\crypto.dll - ad26bc281fee3d7224db6126b63bb16bf3a9426ca22f48f0c09adc504348fab0
C:\Windows\System32\lcss.exe - 2fd25873a826639dc2dc0755d3d745ff272fc869e7d1f0dca6f3326fb8963dcb

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=1787644932&P2=404&P3=2&P4=eh50mT5SF0JzvIMF07PMnFcgyrYDvTyKmUxeun1oEmcjHU37jzacPj0o%2fGXfuszGb5fYvJji8RDJEcuS8%2f703g%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com

Embedded IP addresses

52.123.252.203
20.184.175.3
4.230.171.124
57.155.101.212
48.199.12.1
52.230.59.222
74.178.76.128
4.150.223.101
74.178.76.54
20.165.94.46
20.236.44.162
40.104.4.2
52.123.129.14
52.123.128.14
20.184.175.14
135.233.45.223
57.154.63.210
203.26.79.13
72.145.35.111
135.232.92.34
52.148.114.188
52.110.12.14
52.110.12.40

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report