Linux Analysis Report
va2ZcYaLHe.elf

Overview

General Information

Sample name: va2ZcYaLHe.elf
renamed because original name is a hash value
Original sample name: b925490f03913c77566629e3e2393e7e.elf
Analysis ID: 1427796
MD5: b925490f03913c77566629e3e2393e7e
SHA1: aa41eb009b44b37394a48d285ce4073b44a4f1b0
SHA256: 9e8f0f96ec93cb215ed1a180047889840c9170eba97b82db775e5566531ae0f2
Tags: 32armelfmirai
Infos:

Detection

Mirai
Score: 80
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 and/or dropped files contains symbols with suspicious names
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Sample tries to kill a process (SIGKILL)
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: va2ZcYaLHe.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: va2ZcYaLHe.elf ReversingLabs: Detection: 60%
Source: va2ZcYaLHe.elf Virustotal: Detection: 61% Perma Link
Found strings indicative of a multi-platform dropper
Source: va2ZcYaLHe.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 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: 34.254.182.186
Source: unknown DNS traffic detected: queries for: cnc.condi.cloud
Source: unknown Network traffic detected: HTTP traffic on port 44524 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 443 -> 44524

System Summary
barindex
Malicious sample detected (through community Yara rule)
Source: va2ZcYaLHe.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 5524.1.00007f8cb8017000.00007f8cb8031000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: va2ZcYaLHe.elf PID: 5524, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Sample and/or dropped files contains symbols with suspicious names
Source: va2ZcYaLHe.elf ELF static info symbol of initial sample: __gnu_unwind_execute
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 tries to kill a process (SIGKILL)
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) SIGKILL sent: pid: 3944, result: successful Jump to behavior
Yara signature match
Source: va2ZcYaLHe.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: 5524.1.00007f8cb8017000.00007f8cb8031000.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: va2ZcYaLHe.elf PID: 5524, 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: mal80.troj.linELF@0/1025@90/0
Enumerates processes within the "proc" file system
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/110/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/231/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/111/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/112/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/233/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/113/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/114/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/235/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/115/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/1333/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/116/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/1695/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/117/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/118/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/119/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/911/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/914/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/10/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/917/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/11/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/12/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/13/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/14/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/15/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/16/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/17/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/18/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/19/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/1591/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/120/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/121/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/1/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/122/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/243/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/2/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/123/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/3/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/124/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/1588/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/125/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/4/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/246/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/126/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/5/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/127/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/6/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/1585/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/128/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/7/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/129/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/8/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/800/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/9/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/802/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/803/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/804/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/20/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/3768/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/21/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/3407/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/22/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/23/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/24/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/25/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/26/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/27/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/28/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/29/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/1484/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/490/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/250/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/130/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/251/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/131/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/132/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/133/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/1479/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/378/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/258/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/259/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/931/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/1595/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/812/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/933/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/30/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/3419/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/35/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/3672/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/3310/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/260/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/261/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/262/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/142/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/263/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/264/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/265/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/145/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/266/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/267/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/268/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/3303/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/269/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/1486/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/1806/cmdline Jump to behavior
Source: /tmp/va2ZcYaLHe.elf (PID: 5528) File opened: /proc/3440/cmdline Jump to behavior
Executes the "rm" command used to delete files or directories
Source: /usr/bin/dash (PID: 5530) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.oQi6T9KGYr /tmp/tmp.C7IgMf5NvF /tmp/tmp.b6R03l7rwg Jump to behavior
Source: /usr/bin/dash (PID: 5531) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.oQi6T9KGYr /tmp/tmp.C7IgMf5NvF /tmp/tmp.b6R03l7rwg Jump to behavior
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/va2ZcYaLHe.elf (PID: 5524) Queries kernel information via 'uname': Jump to behavior
Source: va2ZcYaLHe.elf, 5524.1.000055ac05a15000.000055ac05b65000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/arm
Source: va2ZcYaLHe.elf, 5524.1.000055ac05a15000.000055ac05b65000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: va2ZcYaLHe.elf, 5524.1.00007ffef26ea000.00007ffef270b000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: va2ZcYaLHe.elf, 5524.1.00007ffef26ea000.00007ffef270b000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/va2ZcYaLHe.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/va2ZcYaLHe.elf

Stealing of Sensitive Information
barindex
Yara detected Mirai
Source: Yara match File source: va2ZcYaLHe.elf, type: SAMPLE
Source: Yara match File source: 5524.1.00007f8cb8017000.00007f8cb8031000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: va2ZcYaLHe.elf PID: 5524, type: MEMORYSTR

Remote Access Functionality
barindex
Yara detected Mirai
Source: Yara match File source: va2ZcYaLHe.elf, type: SAMPLE
Source: Yara match File source: 5524.1.00007f8cb8017000.00007f8cb8031000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: va2ZcYaLHe.elf PID: 5524, type: MEMORYSTR
windows-stand
  • 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
34.254.182.186
 unknown United States
16509 AMAZON-02US false

Contacted Domains

Name IP Active
cnc.condi.cloud unknown unknown