Linux Analysis Report
93dYAEq6GA.elf

Overview

General Information

Sample name: 93dYAEq6GA.elf
renamed because original name is a hash value
Original sample name: 52bad77f35eb4db89027edd3ae492e6e.elf
Analysis ID: 1431962
MD5: 52bad77f35eb4db89027edd3ae492e6e
SHA1: 08748692fa33072ad21233d67279d944d905eded
SHA256: ad091e1d005acc65e8321e4cf34c509986a9834a21e7e9ef0b3c47f44273688a
Tags: 32elfmipsmirai
Infos:

Detection

Gafgyt
Score: 56
Range: 0 - 100
Whitelisted: false

Signatures

Multi AV Scanner detection for submitted file
Yara detected Gafgyt
Detected TCP or UDP traffic on non-standard ports
Sample has stripped symbol table
Sample listens on a socket
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)

Classification

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
Multi AV Scanner detection for submitted file
Source: 93dYAEq6GA.elf ReversingLabs: Detection: 28%
Source: 93dYAEq6GA.elf Virustotal: Detection: 23% Perma Link
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.23:58760 -> 94.156.248.18:5667
Sample listens on a socket
Source: /tmp/93dYAEq6GA.elf (PID: 6243) Socket: 127.0.0.1::46373 Jump to behavior
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Source: global traffic TCP traffic: 192.168.2.23:43928 -> 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: unknown UDP traffic detected without corresponding DNS query: 81.169.136.222
Source: global traffic DNS traffic detected: DNS query: servernoworky.geek
Source: unknown Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 42836 -> 443
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Source: classification engine Classification label: mal56.troj.linELF@0/0@1/0
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/93dYAEq6GA.elf (PID: 6243) Queries kernel information via 'uname': Jump to behavior
Source: 93dYAEq6GA.elf, 6243.1.000055c8a33f4000.000055c8a349e000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/mipsel
Source: 93dYAEq6GA.elf, 6243.1.00007ffcb03cc000.00007ffcb03ed000.rw-.sdmp Binary or memory string: hx86_64/usr/bin/qemu-mipsel/tmp/93dYAEq6GA.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/93dYAEq6GA.elf
Source: 93dYAEq6GA.elf, 6243.1.000055c8a33f4000.000055c8a349e000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/mipsel
Source: 93dYAEq6GA.elf, 6243.1.00007ffcb03cc000.00007ffcb03ed000.rw-.sdmp Binary or memory string: /usr/bin/qemu-mipsel

Stealing of Sensitive Information
barindex
Yara detected Gafgyt
Source: Yara match File source: 93dYAEq6GA.elf, type: SAMPLE
Source: Yara match File source: 6243.1.00007fa4b0400000.00007fa4b042b000.r-x.sdmp, type: MEMORY

Remote Access Functionality
barindex
Yara detected Gafgyt
Source: Yara match File source: 93dYAEq6GA.elf, type: SAMPLE
Source: Yara match File source: 6243.1.00007fa4b0400000.00007fa4b042b000.r-x.sdmp, type: MEMORY

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
94.156.248.18
 unknown Bulgaria
34224 NETERRA-ASBG false
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
servernoworky.geek 91.92.254.116 true