MALICIOUS — net.cpl

MALICIOUS — net.cpl is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the HmJfa4pdRVd family. 6 of 55 detection engines flagged it, exhibiting 3 ATT&CK techniques.

Identification

SHA-256: 8bff7c3fe98eb8dd0a0d37f7b71d2ba7a920d30d0a252ce1145f0ed55a470baa
SHA-1: 6acbd3abb7626cd598253951e0928c432756186c
MD5: e0730b97f654631e836f95a52e417d97
imphash: e60d0e6577962a1096407913ed128742
ssdeep: 3072:IyrN/sVywaEj1UsEOBYJwyrN/sVywaEj1UsnFOUo7+:Nh9wv1Ut3nh9wv1UsFki
TLSH: T1923C02076542D5F9D5D3FE686D28C24DEC915F680936AD8019022FDFA00EB17A9E8ECC
Submitted as: net.cpl
File type: pe · Size: 117248 bytes
Verdict: malicious (99/100) · Family: HmJfa4pdRVd

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 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 21 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)

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

Dropped files

C:\Windows\System32\net.cpl - df3c61847a32781186b2d384c95ed546599515829dfe8d09e11a4b259424845d
C:\Windows\System32\wlogon.dll - 8ebbba6049db483d27e9bdc8ce182681ac540f7e2d4d33ed5eede15c9402fcee
C:\Windows\System32\crypto.dll - 5c7f136fc313d412cc9fe204ada6f6662ff243ef0d770e52d1c358e445d195aa
C:\Windows\System32\lcss.exe - a602487d6e698420b5cd18ab1c38c420e368eafd9ce9940523eacae3cf215ed1

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=1787662001&P2=404&P3=2&P4=JAARpeEvsmmDjo1jt6yt6d6TwChyXbTm0KzDvuNJebPRp0DkeHLD8Fz7KxU%2bUI%2badGVFWhvztRwu5SBBYE8gFw%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com

Embedded IP addresses

40.79.167.10
52.123.252.244
48.211.4.16
52.230.59.222
4.230.171.124
74.178.240.61
135.232.92.97
20.42.65.93
52.123.252.194
20.76.201.171
52.123.129.14
52.123.128.14
142.250.195.99
135.232.92.34
203.26.79.13
135.234.160.245
172.66.2.5
72.145.35.96
52.148.114.188
85.210.193.152
52.110.12.31

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report