MALICIOUS — 03fd7be9f0167cfa5ed7aff44c310e66e20141134f4c4b51b60f7cc706a47f64.elf

MALICIOUS — 03fd7be9f0167cfa5ed7aff44c310e66e20141134f4c4b51b60f7cc706a47f64.elf is a elf sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (90/100), attributed to the Wacatac family. 6 of 54 detection engines flagged it.

Identification

• SHA-256: 03fd7be9f0167cfa5ed7aff44c310e66e20141134f4c4b51b60f7cc706a47f64
• SHA-1: 82033025b1f9cb01d5bd95642c4a9b05a71bb3cd
• MD5: 32977ad9dc13bcf42319a6d16ee11628
• ssdeep: 1536:MKZDD2KzS+VdH8JmIFoc8BLzzX+telBLrs:M4RzS+VdH8JmIFocKz7+t6BLrs
• TLSH: T18133012B99740099D4F9B6510A4F7A3C07B08CE89439081A13ECAFE87D19427B7F75B0
• Submitted as: 03fd7be9f0167cfa5ed7aff44c310e66e20141134f4c4b51b60f7cc706a47f64.elf
• File type: elf · Size: 51436 bytes
• Verdict: malicious (90/100) · Family: Wacatac

Source: MalwareBazaar · first seen 2026-07-29T00:00:00.000Z · 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:Script/Wacatac.B!ml
• Emsisoft (Emergency Kit): Trojan.Linux.Mirai.1
• Kaspersky (KVRT): HEUR:Backdoor.Linux.Mirai.r

Why this verdict

The malicious score of 90/100 is the fusion of 8 weighted signals:

• Microsoft Defender flagged Trojan:Script/Wacatac.B!ml (rule Trojan:Script/Wacatac.B!ml) - 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
• 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 8 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)

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

Runtime network

• _dosvc._tcp.local
• 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
• 40.126.14.162
• 224.0.0.251
• ff02::fb
• ff02::1:3
• 224.0.0.252
• 10.240.0.255
• 10.240.0.1
• 169.254.255.255
• ff02::16
• 20.190.167.20
• 185.125.190.57
• 185.125.190.56
• ff02::1:2

Dropped files

• tmp_tmp.YyaaUZxh0E - 1a46215c017a1d1e5e45ece6d50ce5b2fbf9c6c5f1f1f033b71c3b36cea9a688

Embedded URLs

• http://upx.sf.net

Embedded domains

• upx.sf.net

Embedded IP addresses

• 40.126.14.162
• 20.190.167.20
• 40.84.97.4
• 203.26.79.13
• 4.150.223.98

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

Analyzed on MalwareAnalyzer by Cyble · Open interactive report