Linux Analysis Report
na.elf

Overview

General Information

Sample name: na.elf
Analysis ID: 1527155
MD5: b62608fc8c70ed0fe3c94d4d5f9a5e3b
SHA1: 0654354e24aa5569e186e1d1803ee89a26499620
SHA256: 572aa55da45135ec9af20112ba11837f04fba996a5abd6c0832ba24c4737fd5e
Tags: elfMiraiuser-abuse_ch
Infos:

Detection

Mirai, Moobot
Score: 84
Range: 0 - 100
Whitelisted: false

Signatures

Antivirus / Scanner detection for submitted sample
Detected Mirai
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Yara detected Moobot
Sample deletes itself
Detected TCP or UDP traffic on non-standard ports
Executes the "rm" command used to delete files or directories
Sample has stripped symbol table
Sample listens on a socket
Uses the "uname" system call to query kernel version information (possible evasion)

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
barindex
Antivirus / Scanner detection for submitted sample
Source: na.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: na.elf ReversingLabs: Detection: 70%
Source: unknown HTTPS traffic detected: 54.171.230.55:443 -> 192.168.2.23:33606 version: TLS 1.2

Networking
barindex
Suricata IDS alerts for network traffic
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.23:39194 -> 158.220.114.75:55650
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.23:39196 -> 158.220.114.75:55650
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.23:39218 -> 158.220.114.75:55650
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.23:39206 -> 158.220.114.75:55650
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.23:39222 -> 158.220.114.75:55650
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.23:39200 -> 158.220.114.75:55650
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.23:39210 -> 158.220.114.75:55650
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.23:39202 -> 158.220.114.75:55650
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.23:39198 -> 158.220.114.75:55650
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.23:39214 -> 158.220.114.75:55650
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.23:39212 -> 158.220.114.75:55650
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.23:39224 -> 158.220.114.75:55650
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.23:39204 -> 158.220.114.75:55650
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.23:39220 -> 158.220.114.75:55650
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.23:39208 -> 158.220.114.75:55650
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.23:39216 -> 158.220.114.75:55650
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.23:39194 -> 158.220.114.75:55650
Sample listens on a socket
Source: /tmp/na.elf (PID: 6228) Socket: 192.168.2.23:55650 Jump to behavior
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: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
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: global traffic DNS traffic detected: DNS query: dump.hduak.site
Source: unknown Network traffic detected: HTTP traffic on port 443 -> 33606
Source: unknown Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 33606 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 42836 -> 443
Source: unknown HTTPS traffic detected: 54.171.230.55:443 -> 192.168.2.23:33606 version: TLS 1.2
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Source: classification engine Classification label: mal84.troj.evad.linELF@0/0@16/0
Executes the "rm" command used to delete files or directories
Source: /usr/bin/dash (PID: 6236) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.oS3FoE8Jb0 /tmp/tmp.4mzvJzgfA7 /tmp/tmp.4d3NucQSd1 Jump to behavior
Source: /usr/bin/dash (PID: 6245) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.oS3FoE8Jb0 /tmp/tmp.4mzvJzgfA7 /tmp/tmp.4d3NucQSd1 Jump to behavior

Hooking and other Techniques for Hiding and Protection
barindex
Sample deletes itself
Source: /tmp/na.elf (PID: 6228) File: /tmp/na.elf Jump to behavior
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/na.elf (PID: 6228) Queries kernel information via 'uname': Jump to behavior
Source: na.elf, 6228.1.00007ffccf73b000.00007ffccf75c000.rw-.sdmp Binary or memory string: Xx86_64/usr/bin/qemu-sh4/tmp/na.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/na.elf
Source: na.elf, 6228.1.00007ffccf73b000.00007ffccf75c000.rw-.sdmp Binary or memory string: /usr/bin/qemu-sh4
Source: na.elf, 6228.1.0000558d7eadb000.0000558d7eb3e000.rw-.sdmp Binary or memory string: U5!/etc/qemu-binfmt/sh4
Source: na.elf, 6228.1.0000558d7eadb000.0000558d7eb3e000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/sh4

Stealing of Sensitive Information
barindex
Yara detected Moobot
Source: Yara match File source: na.elf, type: SAMPLE
Source: Yara match File source: 6228.1.00007f2c8c37f000.00007f2c8c38b000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: na.elf PID: 6228, type: MEMORYSTR

Remote Access Functionality
barindex
Detected Mirai
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1)
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1)
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1)
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1)
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1)
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1)
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1)
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1)
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1)
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1)
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1)
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1)
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1)
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1)
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1)
Source: Traffic Suricata IDS: ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1)
Yara detected Moobot
Source: Yara match File source: na.elf, type: SAMPLE
Source: Yara match File source: 6228.1.00007f2c8c37f000.00007f2c8c38b000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: na.elf PID: 6228, 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
54.171.230.55
 unknown United States
16509 AMAZON-02US false
109.202.202.202
 unknown Switzerland
13030 INIT7CH false
158.220.114.75
 dump.hduak.site Switzerland
8556 LEVANTISCH true
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
dump.hduak.site 158.220.114.75 true