Linux Analysis Report
jPa5GP7YWR.elf

Overview

General Information

Sample name: jPa5GP7YWR.elf
renamed because original name is a hash value
Original sample name: a39aacba3ea473a91eb962c37e95ad46.elf
Analysis ID: 1427795
MD5: a39aacba3ea473a91eb962c37e95ad46
SHA1: 953b0054dec3899c2b1afa7ffbe3bcbeb83d95b1
SHA256: 46b1137f3b9eca9aebb1d51377384c03727c2f0771037a125bcff5b4488d2c4d
Tags: 32armelfmirai
Infos:

Detection

Mirai
Score: 72
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
Enumerates processes within the "proc" file system
Executes the "rm" command used to delete files or directories
Found strings indicative of a multi-platform dropper
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Sample has stripped symbol table
Sample tries to kill a process (SIGKILL)
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Tries to resolve domain names, but no domain seems valid (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

AV Detection
barindex
Antivirus / Scanner detection for submitted sample
Source: jPa5GP7YWR.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: jPa5GP7YWR.elf Virustotal: Detection: 43% Perma Link
Source: jPa5GP7YWR.elf ReversingLabs: Detection: 55%
Found strings indicative of a multi-platform dropper
Source: jPa5GP7YWR.elf String: HTTP/1.1 200 OKtop1hbt.armtop1hbt.arm5top1hbt.arm6top1hbt.arm7top1hbt.mipstop1hbt.mpsltop1hbt.x86_64top1hbt.sh4/proc/proc/%d/cmdlinenetstatwgetcurlbusybox/bin/busybox/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/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/abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ3f
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Source: global traffic TCP traffic: 192.168.2.13:58866 -> 54.171.230.55:443
Source: global traffic TCP traffic: 192.168.2.13:48202 -> 185.125.190.26:443
Tries to resolve domain names, but no domain seems valid (expired dropper behavior)
Source: unknown DNS traffic detected: query: cnc.condi.cloud replaycode: Server failure (2)
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
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 DNS traffic detected: queries for: cnc.condi.cloud
Source: unknown Network traffic detected: HTTP traffic on port 58866 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 48202 -> 443

System Summary
barindex
Malicious sample detected (through community Yara rule)
Source: jPa5GP7YWR.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 5450.1.00007f2fdc017000.00007f2fdc034000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: jPa5GP7YWR.elf PID: 5450, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Source: Initial sample String containing 'busybox' found: busybox
Source: Initial sample String containing 'busybox' found: /bin/busybox
Source: Initial sample String containing 'busybox' found: HTTP/1.1 200 OKtop1hbt.armtop1hbt.arm5top1hbt.arm6top1hbt.arm7top1hbt.mipstop1hbt.mpsltop1hbt.x86_64top1hbt.sh4/proc/proc/%d/cmdlinenetstatwgetcurlbusybox/bin/busybox/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/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/abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ3f
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Sample tries to kill a process (SIGKILL)
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) SIGKILL sent: pid: 3856, result: successful Jump to behavior
Yara signature match
Source: jPa5GP7YWR.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: 5450.1.00007f2fdc017000.00007f2fdc034000.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: jPa5GP7YWR.elf PID: 5450, 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: mal72.troj.linELF@0/1025@105/0
Enumerates processes within the "proc" file system
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/3640/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/230/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/110/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/231/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/111/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/232/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/3639/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/112/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/233/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/113/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/234/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/114/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/235/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/115/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/236/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/116/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/237/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/117/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/238/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/118/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/239/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/119/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/914/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/3755/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/3636/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/10/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/917/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/3637/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/11/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/12/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/13/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/14/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/5396/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/15/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/16/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/17/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/18/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/19/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/240/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/3095/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/120/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/241/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/121/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/242/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/1/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/122/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/243/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/2/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/123/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/244/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/3/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/124/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/245/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/1588/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/125/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/4/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/246/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/126/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/5/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/247/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/127/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/6/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/248/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/128/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/7/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/249/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/129/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/8/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/800/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/9/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/1906/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/802/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/803/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/20/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/21/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/22/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/23/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/24/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/25/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/26/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/27/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/28/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/29/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/3420/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/1482/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/490/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/1480/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/250/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/371/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/130/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/251/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/131/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/252/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/132/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/253/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/254/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/1238/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/134/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/255/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/256/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/257/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/378/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/3413/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/258/cmdline Jump to behavior
Source: /tmp/jPa5GP7YWR.elf (PID: 5454) File opened: /proc/259/cmdline Jump to behavior
Executes the "rm" command used to delete files or directories
Source: /usr/bin/dash (PID: 5457) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.cuByqNa7W8 /tmp/tmp.irMllgjoJ1 /tmp/tmp.3m9jzPxcFS Jump to behavior
Source: /usr/bin/dash (PID: 5458) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.cuByqNa7W8 /tmp/tmp.irMllgjoJ1 /tmp/tmp.3m9jzPxcFS Jump to behavior
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/jPa5GP7YWR.elf (PID: 5450) Queries kernel information via 'uname': Jump to behavior
Source: jPa5GP7YWR.elf, 5450.1.00007fff46a95000.00007fff46ab6000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/jPa5GP7YWR.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/jPa5GP7YWR.elf
Source: jPa5GP7YWR.elf, 5450.1.00005576dff33000.00005576e0061000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: jPa5GP7YWR.elf, 5450.1.00007fff46a95000.00007fff46ab6000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: jPa5GP7YWR.elf, 5450.1.00005576dff33000.00005576e0061000.rw-.sdmp Binary or memory string: vU!/etc/qemu-binfmt/arm

Stealing of Sensitive Information
barindex
Yara detected Mirai
Source: Yara match File source: jPa5GP7YWR.elf, type: SAMPLE
Source: Yara match File source: 5450.1.00007f2fdc017000.00007f2fdc034000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: jPa5GP7YWR.elf PID: 5450, type: MEMORYSTR

Remote Access Functionality
barindex
Yara detected Mirai
Source: Yara match File source: jPa5GP7YWR.elf, type: SAMPLE
Source: Yara match File source: 5450.1.00007f2fdc017000.00007f2fdc034000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: jPa5GP7YWR.elf PID: 5450, 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
185.125.190.26
 unknown United Kingdom
41231 CANONICAL-ASGB false

Contacted Domains

Name IP Active
cnc.condi.cloud unknown unknown