MALICIOUS — Instructions.iso

MALICIOUS — Instructions.iso is a unknown sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the Container family. 3 of 47 detection engines flagged it, exhibiting 3 ATT&CK techniques.

Identification

• SHA-256: 21a0b617431850a9ea2698515c277cbd95de4e59c493d0d8f194f3808eb16354
• SHA-1: 2a0478a22d27f7af98786e873b6c85c4ae2e3b2e
• MD5: 67a6774fbc01eb838db364d4aa946a98
• ssdeep: 3072:CUEmC94lAhNLdHZS/Y1s7kNf4RqWs4e32pIYNxHaaBzpodfOYFdUq20vP0X6/q:Es/YPNfEqWKG2kHaaB2kwUq20v
• TLSH: T1C9555BE1119321A2DEF1BE04643D8F8DB49330A556318F8D8103A71F969A2B3BDF58B5
• Submitted as: Instructions.iso
• File type: unknown · Size: 1245184 bytes
• Verdict: malicious (99/100) · Family: Container

Detections (3 of 47 engines)

• YARA: delivr.to detections: DLV_ISO_IMG_Container_Lure
• YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
• Cyble Vision: Cyble Vision: Malware

MITRE ATT&CK

• T1071.001
• T1105
• T1059.004

Why this verdict

The malicious score of 99/100 is the fusion of 9 weighted signals:

• Cyble Vision flagged Cyble Vision: Malware (rule Cyble Vision: Malware) - engine signal, weight 0.90, confidence 0.95
• 1 behavioral detection(s): Download-and-execute dropper (wget/curl + chmod) [high] (rule tl-linux-download-exec) - dynamic signal, weight 0.60, confidence 0.90
• 1 behavioral detection(s): Download-and-execute dropper (wget/curl + chmod) [high] (rule tl-linux-download-exec) - dynamic signal, weight 0.60, confidence 0.90
• Embedded executable payload carved at offset 952320 - static signal, weight 0.40, confidence 0.70
• YARA: delivr.to detections flagged DLV_ISO_IMG_Container_Lure (rule DLV_ISO_IMG_Container_Lure) - engine signal, weight 0.35, confidence 0.70
• YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.35, confidence 0.70
• communicate over HTTP (rule communicate over HTTP) - capa signal, weight 0.30, confidence 0.60
• Contacted 10 external host(s) at runtime - network signal, weight 0.12, confidence 0.55
• Contacted 10 external host(s) at runtime - network signal, weight 0.12, confidence 0.55

Dynamic analysis (linux)

926 behavior events · 0 ATT&CK techniques · 1 dropped files.

Runtime network

• entropy.ubuntu.com
• desktop-hsgcbep
• 250.255.255.239.in-addr.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
• 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
• 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
• desktop-hsgcbep._dosvc._tcp.local
• _dosvc._tcp.local
• ntp.ubuntu.com
• 185.125.189.53:443
• 20.165.94.46
• ff02::1:3
• 224.0.0.252
• 10.240.0.1
• 224.0.0.251
• ff02::fb
• 10.240.0.255
• ff02::16
• 239.255.255.250

Dropped files

• tmp_tmp.AO2Q8MVPTl - 07fa8c00991e01ba7d4cfc0604e69d38d5676f7f23ae58b8d9d87fe047f2fc5c

Embedded IP addresses

• 20.165.94.46
• 40.126.14.164
• 4.247.188.233
• 85.210.193.152

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report