Linux Analysis Report
mips.elf

Overview

General Information

Sample name: mips.elf
Analysis ID: 1540908
MD5: bc5db16a63ae55b0d0b670aa8b832ae8
SHA1: b139005c3f062f76eaca899bcdc19000f6f77ee1
SHA256: 97316b42602d4e1987abee218020474d5f56c4f678ce4a0b08c8150b13762b3e
Tags: elfuser-abuse_ch
Infos:

Detection

Mirai, Moobot
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 Mirai
Yara detected Moobot
Sample deletes itself
Detected TCP or UDP traffic on non-standard ports
Enumerates processes within the "proc" file system
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

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
MooBot No Attribution https://malpedia.caad.fkie.fraunhofer.de/details/elf.moobot

AV Detection
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Antivirus / Scanner detection for submitted sample
Source: mips.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: mips.elf ReversingLabs: Detection: 60%

Networking
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Suricata IDS alerts for network traffic
Source: Network traffic Suricata IDS: 2030491 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M2 (Group String Len 2+) : 192.168.2.23:44708 -> 156.238.253.51:55650
Source: Network traffic Suricata IDS: 2030491 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M2 (Group String Len 2+) : 192.168.2.23:44710 -> 156.238.253.51:55650
Source: Network traffic Suricata IDS: 2030489 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant Server Response : 156.238.253.51:55650 -> 192.168.2.23:44710
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.23:44708 -> 156.238.253.51:55650
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Source: global traffic TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
Source: global traffic TCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
Source: global traffic TCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: global traffic DNS traffic detected: DNS query: flklin.com
Source: unknown Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 42836 -> 443

System Summary
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Malicious sample detected (through community Yara rule)
Source: mips.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6248.1.00007fd8bc400000.00007fd8bc412000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: mips.elf PID: 6248, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Yara signature match
Source: mips.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: 6248.1.00007fd8bc400000.00007fd8bc412000.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: Process Memory Space: mips.elf PID: 6248, 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.troj.evad.linELF@0/0@2/0
Enumerates processes within the "proc" file system
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/6232/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/6233/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/1582/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/3088/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/230/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/110/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/231/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/5937/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/111/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/232/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/1579/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/112/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/233/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/1699/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/113/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/234/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/1335/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/1698/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/114/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/235/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/1334/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/1576/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/2302/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/115/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/236/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/116/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/237/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/117/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/118/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/910/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/119/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/912/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/10/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/2307/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/11/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/918/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/12/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/13/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/14/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/15/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/16/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/17/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/18/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/1594/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/120/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/121/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/1349/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/1/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/122/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/243/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/123/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/2/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/124/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/3/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/4/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/125/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/126/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/1344/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/1465/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/1586/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/127/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/6/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/248/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/128/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/249/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/1463/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/800/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/9/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/801/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/20/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/21/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/1900/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/22/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/23/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/24/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/6254/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/25/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/26/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/6256/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/27/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/28/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/29/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/491/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/250/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/130/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/251/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/252/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/132/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/253/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/254/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/255/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/256/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/1599/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/257/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/1477/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/379/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/258/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/1476/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/259/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/1475/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/4501/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/936/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/30/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/4504/cmdline Jump to behavior
Source: /tmp/mips.elf (PID: 6252) File opened: /proc/2208/cmdline Jump to behavior

Hooking and other Techniques for Hiding and Protection
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Sample deletes itself
Source: /tmp/mips.elf (PID: 6248) File: /tmp/mips.elf Jump to behavior
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/mips.elf (PID: 6248) Queries kernel information via 'uname': Jump to behavior
Source: mips.elf, 6248.1.000055bb1250a000.000055bb12591000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/mips
Source: mips.elf, 6248.1.000055bb1250a000.000055bb12591000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/mips
Source: mips.elf, 6248.1.00007ffc029d7000.00007ffc029f8000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-mips/tmp/mips.elfSUDO_USER=saturninoPATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/binDISPLAY=:1.0XAUTHORITY=/run/user/1000/gdm/XauthoritySUDO_UID=1000TERM=xterm-256colorCOLORTERM=truecolorLOGNAME=rootUSER=rootLANG=en_US.UTF-8SUDO_COMMAND=/bin/bashHOME=/rootMAIL=/var/mail/rootSUDO_GID=1000SHELL=/bin/bash/tmp/mips.elf
Source: mips.elf, 6248.1.00007ffc029d7000.00007ffc029f8000.rw-.sdmp Binary or memory string: /usr/bin/qemu-mips

Stealing of Sensitive Information
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Yara detected Mirai
Source: Yara match File source: mips.elf, type: SAMPLE
Source: Yara match File source: 6248.1.00007fd8bc400000.00007fd8bc412000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: mips.elf PID: 6248, type: MEMORYSTR
Yara detected Moobot
Source: Yara match File source: mips.elf, type: SAMPLE
Source: Yara match File source: 6248.1.00007fd8bc400000.00007fd8bc412000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: mips.elf PID: 6248, type: MEMORYSTR

Remote Access Functionality
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Detected Mirai
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M2 (Group String Len 2+)
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M2 (Group String Len 2+)
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant Server Response
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant Server Response
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant Server Response
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant Server Response
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant Server Response
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant Server Response
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant Server Response
Yara detected Mirai
Source: Yara match File source: mips.elf, type: SAMPLE
Source: Yara match File source: 6248.1.00007fd8bc400000.00007fd8bc412000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: mips.elf PID: 6248, type: MEMORYSTR
Yara detected Moobot
Source: Yara match File source: mips.elf, type: SAMPLE
Source: Yara match File source: 6248.1.00007fd8bc400000.00007fd8bc412000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: mips.elf PID: 6248, 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
156.238.253.51
 flklin.com Seychelles
394281 XHOSTSERVERUS true
109.202.202.202
 unknown Switzerland
13030 INIT7CH false
91.189.91.43
 unknown United Kingdom
41231 CANONICAL-ASGB false
91.189.91.42
 unknown United Kingdom
41231 CANONICAL-ASGB false

Contacted Domains

Name IP Active
flklin.com 156.238.253.51 true