MALICIOUS — bfb4fc546e7c80572a85cea5828f27621dcefb05a35c06685e43cc67f8d3a48b.bin

MALICIOUS — bfb4fc546e7c80572a85cea5828f27621dcefb05a35c06685e43cc67f8d3a48b.bin is a elf sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (93/100). 5 of 57 detection engines flagged it.

Identification

• SHA-256: bfb4fc546e7c80572a85cea5828f27621dcefb05a35c06685e43cc67f8d3a48b
• SHA-1: 0295e4d6ea552057c1e7b1a0d9706ba0285c59a2
• MD5: f9c2132a47abca7b082115f0949a60ff
• ssdeep: 768:jkQN8ilMcMpGXlRmPXQVRJDL6AdQ1punrG4H6LK9q3UEL7:vPDMp+mPXM+rBtL7
• TLSH: T18F31F188676FA511E4763546D94A8D0F12D028942D238B7F40C5CF727DBA0BBD2C75B8
• Submitted as: bfb4fc546e7c80572a85cea5828f27621dcefb05a35c06685e43cc67f8d3a48b.bin
• File type: elf · Size: 40240 bytes
• Verdict: malicious (93/100)

Source: MalShare · first seen 2026-08-23T16:10:06.766Z · SHA-256 verified

Detections (5 of 57 engines)

• MalwareAnalyser heuristics (entropy/packer): high-entropy-blob
• YARA: Intezer community: INTEZER_ELF_UPX_Modified
• Detect It Easy (packer/type): DIE:UPX 3.94
• Microsoft Defender: Trojan:Script/Wacatac.B!ml
• Kaspersky (KVRT): HEUR:Backdoor.Linux.Mirai.h

Why this verdict

The malicious score of 93/100 is the fusion of 9 weighted signals:

• Microsoft Defender flagged Trojan:Script/Wacatac.B!ml (rule Trojan:Script/Wacatac.B!ml) - engine signal, weight 0.55, confidence 0.85
• Kaspersky (KVRT) flagged HEUR:Backdoor.Linux.Mirai.h (rule HEUR:Backdoor.Linux.Mirai.h) - engine signal, weight 0.55, confidence 0.85
• YARA: Intezer community flagged INTEZER_ELF_UPX_Modified (rule INTEZER_ELF_UPX_Modified) - engine signal, weight 0.40, confidence 0.70
• Detect It Easy (packer/type) flagged DIE:UPX 3.94 (rule DIE:UPX 3.94) - engine signal, weight 0.35, confidence 0.70
• MalwareAnalyser heuristics (entropy/packer) flagged high-entropy-blob (rule high-entropy-blob) - engine signal, weight 0.35, confidence 0.70
• Embedded network infrastructure: http://upx.sf.net - static signal, weight 0.35, confidence 0.60
• Packing/obfuscation: high-entropy-blob, UPX 3.94 - static signal, weight 0.25, confidence 0.55
• Contacted 5 external host(s) at runtime - network signal, weight 0.12, confidence 0.55
• Extracted generic config (1 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30

Dynamic analysis (linux)

876 behavior events · 0 ATT&CK techniques · 0 dropped files.

Runtime network

• desktop-hsgcbep
• ntp.ubuntu.com
• 2.0.0.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa
• b.f.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa
• 3.0.0.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa
• 252.0.0.224.in-addr.arpa
• _dosvc._tcp.local
• ff02::1:3
• 224.0.0.252
• 10.240.0.255
• 10.240.0.1
• 224.0.0.251
• ff02::fb
• 185.125.190.57
• 203.26.79.13 NZ · Auckland · AS24305 EdgeIX Pty Ltd
• 20.42.73.28 US · Baltimore · AS8075 Microsoft Corporation
• 185.125.190.58
• 91.189.91.157
• 185.125.190.56
• ff02::1

Embedded URLs

• http://upx.sf.net

Embedded domains

• upx.sf.net

Embedded IP addresses

• 203.26.79.13
• 20.42.73.28
• 40.84.97.4
• 85.210.193.152
• 52.178.17.235

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report