Linux Analysis Report
N7cQXtka2O.elf

Overview

General Information

Sample name: N7cQXtka2O.elf
renamed because original name is a hash value
Original sample name: 400e9d627cf26690b6b1a96ec1d51c75.elf
Analysis ID: 1428683
MD5: 400e9d627cf26690b6b1a96ec1d51c75
SHA1: 7ec2aa2fa139b8eedb700f3159d7f1a573ff8170
SHA256: 77af45fe7ba42510ad57ee3e82c2e7b2dbbdef38ecc2cc191d8d57af67c3f3f8
Tags: 32armelfmirai
Infos:

Detection

Mirai, Okiru
Score: 96
Range: 0 - 100
Whitelisted: false

Signatures

Antivirus / Scanner detection for submitted sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Mirai
Yara detected Okiru
Connects to many ports of the same IP (likely port scanning)
Performs DNS queries to domains with low reputation
Detected TCP or UDP traffic on non-standard ports
Enumerates processes within the "proc" file system
Found strings indicative of a multi-platform dropper
Sample and/or dropped files contains symbols with suspicious names
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
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

AV Detection

barindex
Source: N7cQXtka2O.elf Avira: detected
Source: N7cQXtka2O.elf ReversingLabs: Detection: 52%
Source: N7cQXtka2O.elf Virustotal: Detection: 46% Perma Link
Source: N7cQXtka2O.elf String: HTTP/1.1 200 OKvlxx.armvlxx.arm5vlxx.arm6vlxx.arm7vlxx.m68kvlxx.mipsvlxx.mpslvlxx.ppc/proc//proc/%s/exe/proc/self/exevar/Challengeapp/hi3511gmDVRiboxusr/dvr_main _8182T_1108mnt/mtd/app/guivar/Kylinl0 c/udevdanko-app/ankosample _8182T_1104var/tmp/soniahicorestm_hi3511_dvr/bin/busybox/usr/lib/systemd/systemd/usr/libexec/openssh/sftp-serverusr/shellmnt/sys/bin/boot/media/srv/var/run/sbin/lib/etc/dev/home/Davincitelnetsshwatchdog/var/spool/var/Sofiasshd/usr/compress/bin//compress/bin/compress/usr/bashhttpdtelnetddropbearropbearencodersystem/root/dvr_gui//root/dvr_app//anko-app//opt//proc/proc/%d/cmdlinewgetcurlbusyboxecho

Networking

barindex
Source: global traffic TCP traffic: 45.142.182.93 ports 42597,2,4,5,7,9
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: DNS query: cnc.joskekurwa.xyz
Source: global traffic TCP traffic: 192.168.2.14:58924 -> 45.142.182.93:42597
Source: unknown DNS traffic detected: queries for: cnc.joskekurwa.xyz

System Summary

barindex
Source: N7cQXtka2O.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 5527.1.00007f1543f96000.00007f1543fb2000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: N7cQXtka2O.elf PID: 5527, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: N7cQXtka2O.elf ELF static info symbol of initial sample: __gnu_unwind_execute
Source: Initial sample String containing 'busybox' found: /bin/busybox
Source: Initial sample String containing 'busybox' found: busybox
Source: Initial sample String containing 'busybox' found: HTTP/1.1 200 OKvlxx.armvlxx.arm5vlxx.arm6vlxx.arm7vlxx.m68kvlxx.mipsvlxx.mpslvlxx.ppc/proc//proc/%s/exe/proc/self/exevar/Challengeapp/hi3511gmDVRiboxusr/dvr_main _8182T_1108mnt/mtd/app/guivar/Kylinl0 c/udevdanko-app/ankosample _8182T_1104var/tmp/soniahicorestm_hi3511_dvr/bin/busybox/usr/lib/systemd/systemd/usr/libexec/openssh/sftp-serverusr/shellmnt/sys/bin/boot/media/srv/var/run/sbin/lib/etc/dev/home/Davincitelnetsshwatchdog/var/spool/var/Sofiasshd/usr/compress/bin//compress/bin/compress/usr/bashhttpdtelnetddropbearropbearencodersystem/root/dvr_gui//root/dvr_app//anko-app//opt//proc/proc/%d/cmdlinewgetcurlbusyboxecho
Source: N7cQXtka2O.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: 5527.1.00007f1543f96000.00007f1543fb2000.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: N7cQXtka2O.elf PID: 5527, 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: mal96.troj.linELF@0/1025@24/0
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/3760/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/1583/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/2672/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/110/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/3759/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/111/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/112/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/113/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/234/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/1577/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/114/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/235/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/115/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/116/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/117/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/118/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/119/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/3757/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/10/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/917/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/3758/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/11/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/12/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/13/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/14/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/15/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/16/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/17/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/18/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/19/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/1593/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/240/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/120/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/3094/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/121/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/242/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/3406/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/1/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/122/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/243/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/2/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/123/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/244/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/1589/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/3/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/124/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/245/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/1588/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/125/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/4/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/246/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/3402/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/126/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/5/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/247/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/127/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/6/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/248/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/128/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/7/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/249/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/8/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/129/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/800/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/9/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/801/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/803/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/20/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/806/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/21/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/807/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/928/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/22/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/23/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/24/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/25/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/26/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/27/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/28/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/29/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/3420/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/490/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/250/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/130/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/251/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/131/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/252/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/132/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/253/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/254/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/255/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/135/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/256/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/1599/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/257/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/378/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/258/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/3412/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/259/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/30/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/35/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/1371/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/260/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/261/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5532) File opened: /proc/262/cmdline Jump to behavior
Source: /tmp/N7cQXtka2O.elf (PID: 5527) Queries kernel information via 'uname': Jump to behavior
Source: N7cQXtka2O.elf, 5527.1.000055e46a8a4000.000055e46a9f4000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/arm
Source: N7cQXtka2O.elf, 5527.1.000055e46a8a4000.000055e46a9f4000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: N7cQXtka2O.elf, 5527.1.00007ffc55a69000.00007ffc55a8a000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: N7cQXtka2O.elf, 5527.1.00007ffc55a69000.00007ffc55a8a000.rw-.sdmp Binary or memory string: GNx86_64/usr/bin/qemu-arm/tmp/N7cQXtka2O.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/N7cQXtka2O.elf

Stealing of Sensitive Information

barindex
Source: Yara match File source: N7cQXtka2O.elf, type: SAMPLE
Source: Yara match File source: 5527.1.00007f1543f96000.00007f1543fb2000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: N7cQXtka2O.elf PID: 5527, type: MEMORYSTR
Source: Yara match File source: N7cQXtka2O.elf, type: SAMPLE
Source: Yara match File source: 5527.1.00007f1543f96000.00007f1543fb2000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: N7cQXtka2O.elf PID: 5527, type: MEMORYSTR

Remote Access Functionality

barindex
Source: Yara match File source: N7cQXtka2O.elf, type: SAMPLE
Source: Yara match File source: 5527.1.00007f1543f96000.00007f1543fb2000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: N7cQXtka2O.elf PID: 5527, type: MEMORYSTR
Source: Yara match File source: N7cQXtka2O.elf, type: SAMPLE
Source: Yara match File source: 5527.1.00007f1543f96000.00007f1543fb2000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: N7cQXtka2O.elf PID: 5527, type: MEMORYSTR
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs