Linux Analysis Report
cayo.i486.elf

Overview

General Information

Sample name: cayo.i486.elf
Analysis ID: 1521417
MD5: 79510a83213cde59c1c632bb6bdcb9c0
SHA1: a0a3057a26ca1054c94a4c27f644f992642f1f67
SHA256: f5efef378c943e90573562bcc5ba254872259303fe7c0a44092c57ef9e88d836
Tags: cayoelfuser-NDA0E
Infos:

Detection

Mirai, Gafgyt
Score: 100
Range: 0 - 100
Whitelisted: false

Signatures

Antivirus / Scanner detection for submitted sample
Detected Mirai
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Yara detected Gafgyt
Yara detected Mirai
Contains symbols with names commonly found in malware
Machine Learning detection for sample
Opens /proc/net/* files useful for finding connected devices and routers
Detected TCP or UDP traffic on non-standard ports
Executes the "rm" command used to delete files or directories
Sample contains strings that are user agent strings indicative of HTTP manipulation
Yara signature match

Classification

Name Description Attribution Blogpost URLs Link
Mirai Mirai is one of the first significant botnets targeting exposed networking devices running Linux. Found in August 2016 by MalwareMustDie, its name means "future" in Japanese. Nowadays it targets a wide range of networked embedded devices such as IP cameras, home routers (many vendors involved), and other IoT devices. Since the source code was published on "Hack Forums" many variants of the Mirai family appeared, infecting mostly home networks all around the world. No Attribution https://malpedia.caad.fkie.fraunhofer.de/details/elf.mirai
Name Description Attribution Blogpost URLs Link
Bashlite, Gafgyt Bashlite is a malware family which infects Linux systems in order to launch distributed denial-of-service attacks (DDoS). Originally it was also known under the name Bashdoor, but this term now refers to the exploit method used by the malware. It has been used to launch attacks of up to 400 Gbps. No Attribution https://malpedia.caad.fkie.fraunhofer.de/details/elf.bashlite

AV Detection
barindex
Antivirus / Scanner detection for submitted sample
Source: cayo.i486.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: cayo.i486.elf ReversingLabs: Detection: 68%
Machine Learning detection for sample
Source: cayo.i486.elf Joe Sandbox ML: detected

Spreading
barindex
Opens /proc/net/* files useful for finding connected devices and routers
Source: /tmp/cayo.i486.elf (PID: 5433) Opens: /proc/net/route Jump to behavior

Networking
barindex
Suricata IDS alerts for network traffic
Source: Network traffic Suricata IDS: 2840515 - Severity 1 - ETPRO MALWARE ELF/BASHLITE Variant Reporting Arch Type (i586) : 192.168.2.13:37364 -> 207.244.199.83:8008
Source: Network traffic Suricata IDS: 2840515 - Severity 1 - ETPRO MALWARE ELF/BASHLITE Variant Reporting Arch Type (i586) : 192.168.2.13:37380 -> 207.244.199.83:8008
Source: Network traffic Suricata IDS: 2840515 - Severity 1 - ETPRO MALWARE ELF/BASHLITE Variant Reporting Arch Type (i586) : 192.168.2.13:37374 -> 207.244.199.83:8008
Source: Network traffic Suricata IDS: 2840515 - Severity 1 - ETPRO MALWARE ELF/BASHLITE Variant Reporting Arch Type (i586) : 192.168.2.13:37356 -> 207.244.199.83:8008
Source: Network traffic Suricata IDS: 2840515 - Severity 1 - ETPRO MALWARE ELF/BASHLITE Variant Reporting Arch Type (i586) : 192.168.2.13:37366 -> 207.244.199.83:8008
Source: Network traffic Suricata IDS: 2840515 - Severity 1 - ETPRO MALWARE ELF/BASHLITE Variant Reporting Arch Type (i586) : 192.168.2.13:37354 -> 207.244.199.83:8008
Source: Network traffic Suricata IDS: 2840516 - Severity 1 - ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message : 207.244.199.83:8008 -> 192.168.2.13:37364
Source: Network traffic Suricata IDS: 2840515 - Severity 1 - ETPRO MALWARE ELF/BASHLITE Variant Reporting Arch Type (i586) : 192.168.2.13:37360 -> 207.244.199.83:8008
Source: Network traffic Suricata IDS: 2840516 - Severity 1 - ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message : 207.244.199.83:8008 -> 192.168.2.13:37366
Source: Network traffic Suricata IDS: 2840516 - Severity 1 - ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message : 207.244.199.83:8008 -> 192.168.2.13:37374
Source: Network traffic Suricata IDS: 2840516 - Severity 1 - ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message : 207.244.199.83:8008 -> 192.168.2.13:37380
Source: Network traffic Suricata IDS: 2840516 - Severity 1 - ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message : 207.244.199.83:8008 -> 192.168.2.13:37356
Source: Network traffic Suricata IDS: 2840515 - Severity 1 - ETPRO MALWARE ELF/BASHLITE Variant Reporting Arch Type (i586) : 192.168.2.13:37358 -> 207.244.199.83:8008
Source: Network traffic Suricata IDS: 2840515 - Severity 1 - ETPRO MALWARE ELF/BASHLITE Variant Reporting Arch Type (i586) : 192.168.2.13:37362 -> 207.244.199.83:8008
Source: Network traffic Suricata IDS: 2840516 - Severity 1 - ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message : 207.244.199.83:8008 -> 192.168.2.13:37354
Source: Network traffic Suricata IDS: 2840516 - Severity 1 - ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message : 207.244.199.83:8008 -> 192.168.2.13:37362
Source: Network traffic Suricata IDS: 2840516 - Severity 1 - ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message : 207.244.199.83:8008 -> 192.168.2.13:37360
Source: Network traffic Suricata IDS: 2840516 - Severity 1 - ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message : 207.244.199.83:8008 -> 192.168.2.13:37358
Source: Network traffic Suricata IDS: 2840515 - Severity 1 - ETPRO MALWARE ELF/BASHLITE Variant Reporting Arch Type (i586) : 192.168.2.13:37368 -> 207.244.199.83:8008
Source: Network traffic Suricata IDS: 2840515 - Severity 1 - ETPRO MALWARE ELF/BASHLITE Variant Reporting Arch Type (i586) : 192.168.2.13:37372 -> 207.244.199.83:8008
Source: Network traffic Suricata IDS: 2840515 - Severity 1 - ETPRO MALWARE ELF/BASHLITE Variant Reporting Arch Type (i586) : 192.168.2.13:37378 -> 207.244.199.83:8008
Source: Network traffic Suricata IDS: 2840515 - Severity 1 - ETPRO MALWARE ELF/BASHLITE Variant Reporting Arch Type (i586) : 192.168.2.13:37370 -> 207.244.199.83:8008
Source: Network traffic Suricata IDS: 2840516 - Severity 1 - ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message : 207.244.199.83:8008 -> 192.168.2.13:37368
Source: Network traffic Suricata IDS: 2840516 - Severity 1 - ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message : 207.244.199.83:8008 -> 192.168.2.13:37378
Source: Network traffic Suricata IDS: 2840516 - Severity 1 - ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message : 207.244.199.83:8008 -> 192.168.2.13:37370
Source: Network traffic Suricata IDS: 2840516 - Severity 1 - ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message : 207.244.199.83:8008 -> 192.168.2.13:37372
Source: Network traffic Suricata IDS: 2840515 - Severity 1 - ETPRO MALWARE ELF/BASHLITE Variant Reporting Arch Type (i586) : 192.168.2.13:37376 -> 207.244.199.83:8008
Source: Network traffic Suricata IDS: 2840516 - Severity 1 - ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message : 207.244.199.83:8008 -> 192.168.2.13:37376
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.13:37354 -> 207.244.199.83:8008
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: unknown TCP traffic detected without corresponding DNS query: 207.244.199.83
Source: global traffic DNS traffic detected: DNS query: daisy.ubuntu.com

System Summary
barindex
Malicious sample detected (through community Yara rule)
Source: cayo.i486.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: cayo.i486.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_c573932b Author: unknown
Source: cayo.i486.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_7167d08f Author: unknown
Source: cayo.i486.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_9127f7be Author: unknown
Source: cayo.i486.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_122ff2e6 Author: unknown
Source: cayo.i486.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_fa48b592 Author: unknown
Source: 5435.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 5435.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_c573932b Author: unknown
Source: 5435.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_7167d08f Author: unknown
Source: 5435.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_9127f7be Author: unknown
Source: 5435.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_122ff2e6 Author: unknown
Source: 5435.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_fa48b592 Author: unknown
Source: 5433.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 5433.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_c573932b Author: unknown
Source: 5433.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_7167d08f Author: unknown
Source: 5433.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_9127f7be Author: unknown
Source: 5433.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_122ff2e6 Author: unknown
Source: 5433.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_fa48b592 Author: unknown
Source: 5436.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 5436.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_c573932b Author: unknown
Source: 5436.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_7167d08f Author: unknown
Source: 5436.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_9127f7be Author: unknown
Source: 5436.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_122ff2e6 Author: unknown
Source: 5436.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_fa48b592 Author: unknown
Source: Process Memory Space: cayo.i486.elf PID: 5433, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: cayo.i486.elf PID: 5435, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: cayo.i486.elf PID: 5436, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Contains symbols with names commonly found in malware
Source: ELF static info symbol of initial sample Name: vseattack
Yara signature match
Source: cayo.i486.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: cayo.i486.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_c573932b reference_sample = 4c6aeaa6f6a0c40a3f4116a2e19e669188a8b1678a8930350889da1bab531c68, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 18a3025ebb8af46605970ee8d7d18214854b86200001d576553e102cb71df266, id = c573932b-9b3f-4ab7-a6b6-32dcc7473790, last_modified = 2021-09-16
Source: cayo.i486.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_7167d08f reference_sample = 4c6aeaa6f6a0c40a3f4116a2e19e669188a8b1678a8930350889da1bab531c68, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = b9df4ab322a2a329168f684b07b7b05ee3d03165c5b9050a4710eae7aeca6cd9, id = 7167d08f-bfeb-4d78-9783-3a1df2ef0ed3, last_modified = 2021-09-16
Source: cayo.i486.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_9127f7be reference_sample = 899c072730590003b98278bdda21c15ecaa2f49ad51e417ed59e88caf054a72d, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 72c742cb8b11ddf030e10f67e13c0392748dcd970394ec77ace3d2baa705a375, id = 9127f7be-6e82-46a1-9f11-0b3570b0cd76, last_modified = 2021-09-16
Source: cayo.i486.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_122ff2e6 reference_sample = c7dd999a033fa3edc1936785b87cd69ce2f5cac5a084ddfaf527a1094e718bc4, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 3c9ffd7537e30a21eefa6c174f801264b92a85a1bc73e34e6dc9e29f84658348, id = 122ff2e6-56e6-4aa8-a3ec-c19d31eb1f80, last_modified = 2021-09-16
Source: cayo.i486.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_fa48b592 reference_sample = c9e33befeec133720b3ba40bb3cd7f636aad80f72f324c5fe65ac7af271c49ee, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 8838d2752b310dbf7d12f6cf023244aaff4fdf5b55cf1e3b71843210df0fcf88, id = fa48b592-8d80-45af-a3e4-232695b8f5dd, last_modified = 2021-09-16
Source: 5435.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: 5435.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_c573932b reference_sample = 4c6aeaa6f6a0c40a3f4116a2e19e669188a8b1678a8930350889da1bab531c68, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 18a3025ebb8af46605970ee8d7d18214854b86200001d576553e102cb71df266, id = c573932b-9b3f-4ab7-a6b6-32dcc7473790, last_modified = 2021-09-16
Source: 5435.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_7167d08f reference_sample = 4c6aeaa6f6a0c40a3f4116a2e19e669188a8b1678a8930350889da1bab531c68, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = b9df4ab322a2a329168f684b07b7b05ee3d03165c5b9050a4710eae7aeca6cd9, id = 7167d08f-bfeb-4d78-9783-3a1df2ef0ed3, last_modified = 2021-09-16
Source: 5435.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_9127f7be reference_sample = 899c072730590003b98278bdda21c15ecaa2f49ad51e417ed59e88caf054a72d, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 72c742cb8b11ddf030e10f67e13c0392748dcd970394ec77ace3d2baa705a375, id = 9127f7be-6e82-46a1-9f11-0b3570b0cd76, last_modified = 2021-09-16
Source: 5435.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_122ff2e6 reference_sample = c7dd999a033fa3edc1936785b87cd69ce2f5cac5a084ddfaf527a1094e718bc4, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 3c9ffd7537e30a21eefa6c174f801264b92a85a1bc73e34e6dc9e29f84658348, id = 122ff2e6-56e6-4aa8-a3ec-c19d31eb1f80, last_modified = 2021-09-16
Source: 5435.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_fa48b592 reference_sample = c9e33befeec133720b3ba40bb3cd7f636aad80f72f324c5fe65ac7af271c49ee, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 8838d2752b310dbf7d12f6cf023244aaff4fdf5b55cf1e3b71843210df0fcf88, id = fa48b592-8d80-45af-a3e4-232695b8f5dd, last_modified = 2021-09-16
Source: 5433.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: 5433.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_c573932b reference_sample = 4c6aeaa6f6a0c40a3f4116a2e19e669188a8b1678a8930350889da1bab531c68, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 18a3025ebb8af46605970ee8d7d18214854b86200001d576553e102cb71df266, id = c573932b-9b3f-4ab7-a6b6-32dcc7473790, last_modified = 2021-09-16
Source: 5433.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_7167d08f reference_sample = 4c6aeaa6f6a0c40a3f4116a2e19e669188a8b1678a8930350889da1bab531c68, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = b9df4ab322a2a329168f684b07b7b05ee3d03165c5b9050a4710eae7aeca6cd9, id = 7167d08f-bfeb-4d78-9783-3a1df2ef0ed3, last_modified = 2021-09-16
Source: 5433.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_9127f7be reference_sample = 899c072730590003b98278bdda21c15ecaa2f49ad51e417ed59e88caf054a72d, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 72c742cb8b11ddf030e10f67e13c0392748dcd970394ec77ace3d2baa705a375, id = 9127f7be-6e82-46a1-9f11-0b3570b0cd76, last_modified = 2021-09-16
Source: 5433.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_122ff2e6 reference_sample = c7dd999a033fa3edc1936785b87cd69ce2f5cac5a084ddfaf527a1094e718bc4, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 3c9ffd7537e30a21eefa6c174f801264b92a85a1bc73e34e6dc9e29f84658348, id = 122ff2e6-56e6-4aa8-a3ec-c19d31eb1f80, last_modified = 2021-09-16
Source: 5433.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_fa48b592 reference_sample = c9e33befeec133720b3ba40bb3cd7f636aad80f72f324c5fe65ac7af271c49ee, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 8838d2752b310dbf7d12f6cf023244aaff4fdf5b55cf1e3b71843210df0fcf88, id = fa48b592-8d80-45af-a3e4-232695b8f5dd, last_modified = 2021-09-16
Source: 5436.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: 5436.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_c573932b reference_sample = 4c6aeaa6f6a0c40a3f4116a2e19e669188a8b1678a8930350889da1bab531c68, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 18a3025ebb8af46605970ee8d7d18214854b86200001d576553e102cb71df266, id = c573932b-9b3f-4ab7-a6b6-32dcc7473790, last_modified = 2021-09-16
Source: 5436.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_7167d08f reference_sample = 4c6aeaa6f6a0c40a3f4116a2e19e669188a8b1678a8930350889da1bab531c68, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = b9df4ab322a2a329168f684b07b7b05ee3d03165c5b9050a4710eae7aeca6cd9, id = 7167d08f-bfeb-4d78-9783-3a1df2ef0ed3, last_modified = 2021-09-16
Source: 5436.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_9127f7be reference_sample = 899c072730590003b98278bdda21c15ecaa2f49ad51e417ed59e88caf054a72d, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 72c742cb8b11ddf030e10f67e13c0392748dcd970394ec77ace3d2baa705a375, id = 9127f7be-6e82-46a1-9f11-0b3570b0cd76, last_modified = 2021-09-16
Source: 5436.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_122ff2e6 reference_sample = c7dd999a033fa3edc1936785b87cd69ce2f5cac5a084ddfaf527a1094e718bc4, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 3c9ffd7537e30a21eefa6c174f801264b92a85a1bc73e34e6dc9e29f84658348, id = 122ff2e6-56e6-4aa8-a3ec-c19d31eb1f80, last_modified = 2021-09-16
Source: 5436.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_fa48b592 reference_sample = c9e33befeec133720b3ba40bb3cd7f636aad80f72f324c5fe65ac7af271c49ee, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 8838d2752b310dbf7d12f6cf023244aaff4fdf5b55cf1e3b71843210df0fcf88, id = fa48b592-8d80-45af-a3e4-232695b8f5dd, last_modified = 2021-09-16
Source: Process Memory Space: cayo.i486.elf PID: 5433, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: Process Memory Space: cayo.i486.elf PID: 5435, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: Process Memory Space: cayo.i486.elf PID: 5436, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: classification engine Classification label: mal100.spre.troj.linELF@0/0@2/0
Executes the "rm" command used to delete files or directories
Source: /usr/bin/dash (PID: 5412) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.gwY62oDfHc /tmp/tmp.eq3MmwQRU8 /tmp/tmp.4pNKbmBgxQ Jump to behavior
Source: /usr/bin/dash (PID: 5423) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.gwY62oDfHc /tmp/tmp.eq3MmwQRU8 /tmp/tmp.4pNKbmBgxQ Jump to behavior

Stealing of Sensitive Information
barindex
Yara detected Gafgyt
Source: Yara match File source: cayo.i486.elf, type: SAMPLE
Yara detected Mirai
Source: Yara match File source: cayo.i486.elf, type: SAMPLE
Source: Yara match File source: 5435.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5433.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5436.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: cayo.i486.elf PID: 5433, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: cayo.i486.elf PID: 5435, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: cayo.i486.elf PID: 5436, type: MEMORYSTR
Sample contains strings that are user agent strings indicative of HTTP manipulation
Source: Initial sample User agent string found: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; pl) Opera 11.00
Source: Initial sample User agent string found: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; en) Opera 11.00
Source: Initial sample User agent string found: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; ja) Opera 11.00
Source: Initial sample User agent string found: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; de) Opera 11.01
Source: Initial sample User agent string found: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; fr) Opera 11.00
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.79 Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0
Source: Initial sample User agent string found: Mozilla/5.0 (iPhone; CPU iPhone OS 8_4 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Version/8.0 Mobile/12H143 Safari/600.1.4
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11) AppleWebKit/601.1.56 (KHTML, like Gecko) Version/9.0 Safari/601.1.56
Source: Initial sample User agent string found: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_1) AppleWebKit/601.2.7 (KHTML, like Gecko) Version/9.0.1 Safari/601.2.7
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko
Source: Initial sample User agent string found: Opera/9.80 (Windows NT 5.2; U; ru) Presto/2.5.22 Version/10.51
Source: Initial sample User agent string found: Opera/9.80 (X11; Linux i686; Ubuntu/14.10) Presto/2.12.388 Version/12.16
Source: Initial sample User agent string found: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_3) AppleWebKit/537.75.14 (KHTML, like Gecko) Version/7.0.3 Safari/7046A194A
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.94 Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (Linux; Android 4.4.3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.89 Mobile Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (Linux; Android 4.4.3; HTC_0PCV2 Build/KTU84L) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/33.0.0.0 Mobile Safari/537.36
Source: Initial sample User agent string found: Mozilla/4.0 (compatible; MSIE 8.0; X11; Linux x86_64; pl) Opera 11.00
Source: Initial sample User agent string found: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:25.0) Gecko/20100101 Firefox/25.0
Source: Initial sample User agent string found: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:21.0) Gecko/20100101 Firefox/21.0
Source: Initial sample User agent string found: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:24.0) Gecko/20100101 Firefox/24.0
Source: Initial sample User agent string found: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10; rv:33.0) Gecko/20100101 Firefox/33.0

Remote Access Functionality
barindex
Detected Mirai
Source: Traffic Suricata IDS: ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message
Source: Traffic Suricata IDS: ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message
Source: Traffic Suricata IDS: ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message
Source: Traffic Suricata IDS: ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message
Source: Traffic Suricata IDS: ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message
Source: Traffic Suricata IDS: ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message
Source: Traffic Suricata IDS: ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message
Source: Traffic Suricata IDS: ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message
Source: Traffic Suricata IDS: ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message
Source: Traffic Suricata IDS: ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message
Source: Traffic Suricata IDS: ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message
Source: Traffic Suricata IDS: ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message
Source: Traffic Suricata IDS: ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message
Source: Traffic Suricata IDS: ETPRO MALWARE ELF/BASHLITE/Mirai Cayosin Variant CnC Server Message
Yara detected Gafgyt
Source: Yara match File source: cayo.i486.elf, type: SAMPLE
Yara detected Mirai
Source: Yara match File source: cayo.i486.elf, type: SAMPLE
Source: Yara match File source: 5435.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5433.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5436.1.0000000008048000.000000000805b000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: cayo.i486.elf PID: 5433, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: cayo.i486.elf PID: 5435, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: cayo.i486.elf PID: 5436, type: MEMORYSTR

No Screenshots

  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs

Contacted Public IPs

IP Domain Country Flag ASN ASN Name Malicious
207.244.199.83
 unknown United States
6428 CDMUS true

Contacted Domains

Name IP Active
daisy.ubuntu.com 162.213.35.25 true