MALICIOUS — 9fca540b88a7ea5dc0890c567e844003cdc43977f4a93d7cdee8fdd7f91c2f4b.bin

MALICIOUS — 9fca540b88a7ea5dc0890c567e844003cdc43977f4a93d7cdee8fdd7f91c2f4b.bin is a elf sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Gafgyt family. 5 of 57 detection engines flagged it.

Identification

• SHA-256: 9fca540b88a7ea5dc0890c567e844003cdc43977f4a93d7cdee8fdd7f91c2f4b
• SHA-1: 9c42e58b8a95872e53c9b5e015d062f22282ea35
• MD5: 0e6204070ea403d2f087a92ba46bb79c
• ssdeep: 6144:SMGlBNMdLUFX26KAO65hWsRAqmgjvxK/Lr3rs749OXW:SlBNmUFHKAb5hWkmgjvxK/Lr3rs749Om
• TLSH: T148425A28BCA43781DD8BB44D4206B3EE5D69B77EE82BE60F8371DCA6405096F155022F
• Submitted as: 9fca540b88a7ea5dc0890c567e844003cdc43977f4a93d7cdee8fdd7f91c2f4b.bin
• File type: elf · Size: 217737 bytes
• Verdict: malicious (100/100) · Family: Gafgyt

Source: MalShare · first seen 2026-09-07T19:05:18.627Z · SHA-256 verified

Detections (5 of 57 engines)

• ClamAV (daily): Unix.Trojan.Tsunami-6981155-0
• YARA: ESET research: IIS_Group10
• Microsoft Defender: Backdoor:Linux/DemonBot.Aa!MTB
• Emsisoft (Emergency Kit): Gen:Variant.Linux.Gafgyt.1
• Kaspersky (KVRT): HEUR:Backdoor.Linux.Gafgyt.dd

Why this verdict

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

• ClamAV (daily) flagged Unix.Trojan.Tsunami-6981155-0 (rule Unix.Trojan.Tsunami-6981155-0) - engine signal, weight 0.90, confidence 0.95
• Memory forensics: 1 finding(s) attributed to the sample across 1 technique(s), e.g. injected region in sample.bin (pid 707) (rule linux.malfind.Malfind) - memory signal, weight 0.60, confidence 0.85
• YARA: ESET research flagged IIS_Group10 (rule IIS_Group10) - engine signal, weight 0.70, confidence 0.70
• Microsoft Defender flagged Backdoor:Linux/DemonBot.Aa!MTB (rule Backdoor:Linux/DemonBot.Aa!MTB) - engine signal, weight 0.55, confidence 0.85
• Emsisoft (Emergency Kit) flagged Gen:Variant.Linux.Gafgyt.1 (rule Gen:Variant.Linux.Gafgyt.1) - engine signal, weight 0.55, confidence 0.85
• Kaspersky (KVRT) flagged HEUR:Backdoor.Linux.Gafgyt.dd (rule HEUR:Backdoor.Linux.Gafgyt.dd) - engine signal, weight 0.55, confidence 0.85
• Embedded network infrastructure: http://fast.no/support/crawler.asp, http://www.billybobbot.com/crawler/, http://feedback.redkolibri.com/ - static signal, weight 0.35, confidence 0.60
• Contacted 2 external host(s) at runtime - network signal, weight 0.12, confidence 0.55
• Extracted generic config (11 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30

Dynamic analysis (linux)

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

Runtime network

• ntp.ubuntu.com
• 131.123.40.104:4444 US · Kent · AS11050 Kent State University
• 131.123.40.104 US · Kent · AS11050 Kent State University
• 10.240.0.1
• 185.125.190.58
• ff02::2
• ff02::16
• ff02::1
• ff02::1:ff12:3456
• 255.255.255.255

Embedded URLs

• http://fast.no/support/crawler.asp
• http://www.billybobbot.com/crawler/
• http://feedback.redkolibri.com/
• http://www.baidu.com/search/spider.htm
• http://www.baidu.com/search/spider.html

Embedded domains

• fast.no
• www.thesubot.de
• www.billybobbot.com
• feedback.redkolibri.com
• www.baidu.com
• dayzddos.co
• lolololololdayzddos.co
• example.ulfheim.net

Embedded IP addresses

• 131.123.40.104
• 1.9.1.1
• 1.9.1.3
• 1.9.0.8
• 3.0.4.2
• 1.9.2.8
• 8.8.8.8
• 1.8.1.11
• 1.9.0.6
• 1.9.2.6
• 1.9.2.4

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

Analyzed on MalwareAnalyzer by Cyble · Open interactive report