MALICIOUS — 3fc30b1df7c5fde1acb66eed7a784cceddb38c6607843343ead274e0a49d568a.elf

MALICIOUS — 3fc30b1df7c5fde1acb66eed7a784cceddb38c6607843343ead274e0a49d568a.elf is a elf sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (94/100), attributed to the Sonbokli family. 6 of 54 detection engines flagged it, exhibiting 1 ATT&CK technique.

Identification

• SHA-256: 3fc30b1df7c5fde1acb66eed7a784cceddb38c6607843343ead274e0a49d568a
• SHA-1: deeb9a3a38b1bfd3e5337581df16a240fe0ecac3
• MD5: 06a0e7b8052b6f4827101f4fea7f7a72
• ssdeep: 768:DhbUpgfK/AwKhplB651GT8AnRTGS3DIFssAYG0kw7VF6EIlXP49q3UEL4w:DxUpgy4Fhl651u8STGST8AYG0hVF6EmF
• TLSH: T1A030E129070C5501E63B16DAAA75463E0AE50EB6473B2F3457D8C3770938D3F249F6A2
• Submitted as: 3fc30b1df7c5fde1acb66eed7a784cceddb38c6607843343ead274e0a49d568a.elf
• File type: elf · Size: 38008 bytes
• Verdict: malicious (94/100) · Family: Sonbokli

Source: MalwareBazaar · first seen 2026-07-27T00:00:00.000Z · SHA-256 verified

Detections (6 of 54 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:Win32/Sonbokli.A!cl
• Emsisoft (Emergency Kit): Trojan.Linux.Mirai.1
• Kaspersky (KVRT): HEUR:Backdoor.Linux.Mirai.b

MITRE ATT&CK

• T1105

Why this verdict

The malicious score of 94/100 is the fusion of 9 weighted signals:

• Microsoft Defender flagged Trojan:Win32/Sonbokli.A!cl (rule Trojan:Win32/Sonbokli.A!cl) - engine signal, weight 0.55, confidence 0.85
• Emsisoft (Emergency Kit) flagged Trojan.Linux.Mirai.1 (rule Trojan.Linux.Mirai.1) - engine signal, weight 0.55, confidence 0.85
• 1 behavioral detection(s): Remote payload download (wget/curl) [medium] (rule tl-linux-download-cradle) - dynamic signal, weight 0.40, confidence 0.90
• YARA: Intezer community flagged INTEZER_ELF_UPX_Modified (rule INTEZER_ELF_UPX_Modified) - engine signal, weight 0.35, 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
• 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 14 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)

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

Runtime network

• entropy.ubuntu.com
• 250.255.255.239.in-addr.arpa
• ntp.ubuntu.com
• desktop-hsgcbep
• 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
• 185.125.189.53:443
• 185.125.189.53
• 203.26.79.13
• 172.215.188.232
• 10.240.0.1
• 185.125.189.54
• 224.0.0.251
• ff02::fb
• ff02::1:3
• 224.0.0.252
• 23.40.52.148
• 185.125.189.52

Dropped files

• tmp_tmp.fMPScks7K9 - a195f927eac2ceb4648144e9c4a184e58258c42f8702e1bdcafbc58d7250dfbc

Embedded URLs

• http://upx.sf.net

Embedded domains

• upx.sf.net

Embedded IP addresses

• 203.26.79.13
• 172.215.188.232
• 23.40.52.148
• 20.184.175.23
• 52.168.112.67
• 172.215.188.225
• 4.150.223.103
• 20.190.142.167
• 172.172.255.218

More Sonbokli samples · Latest analyzed threats · ATT&CK coverage

Analyzed on MalwareAnalyzer by Cyble · Open interactive report