Linux Analysis Report
na.elf

Overview

General Information

Sample name: na.elf
Analysis ID: 1528132
MD5: 47b283fe2b62434075319b4e9ca076de
SHA1: 0b8a05062078824a5c64972d6281d350b5b7ad10
SHA256: a364e8acff9c109c29a70ea35f6b27cb08ef74cd45fd8418c6e459edbe258b1c
Tags: elfuser-abuse_ch
Infos:

Detection

Mirai, Gafgyt, Moobot, Okiru
Score: 92
Range: 0 - 100
Whitelisted: false

Signatures

Detected Mirai
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Yara detected Gafgyt
Yara detected Moobot
Yara detected Okiru
Connects to many ports of the same IP (likely port scanning)
Detected TCP or UDP traffic on non-standard ports
Executes commands using a shell command-line interpreter
Executes the "systemctl" command used for controlling the systemd system and service manager
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
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
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
Name Description Attribution Blogpost URLs Link
MooBot No Attribution https://malpedia.caad.fkie.fraunhofer.de/details/elf.moobot

AV Detection
barindex
Multi AV Scanner detection for submitted file
Source: na.elf ReversingLabs: Detection: 55%
Found strings indicative of a multi-platform dropper
Source: na.elf String: HTTP/1.1 200 OKbolubotnetarmbolubotnetarm5bolubotnetarm6bolubotnetarm7bolubotnetmipsbolubotnetmpslbolubotnetx86_64bolubotnetsh4abcdefghijklmnopqrstuvwxyz/proc/%d/exe/tmp/%s%s%c/proc/self/cmdline/proc/%d/proc/self/proc/proc/%d/cmdlinernetstatwgetcurlbusybox/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/apache2srv/var/run/sbin/lib/etc/dev/home/Davincitelnetsshwatchdog/var/spoolsshd/usr/compress/bin//compress/bin/compress/usr/bashhttpdtelnetddropbearropbearencodersystem/root/dvr_gui//root/dvr_app//anko-app//opt/.x86.x86_64.arm.arm5.arm6.arm7.mips.mipsel.sh4.ppcx86x86_64armarm5arm6arm7mipsmipselsh4ppcx86.x86_64.arm.arm5.arm6.arm7.mips.mipsel.sh4.ppc.

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) : 192.168.2.15:41620 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41630 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41660 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41632 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41618 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41642 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41646 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41634 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41638 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41652 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41674 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41654 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41616 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41640 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41678 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41622 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41628 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41650 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41664 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41656 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41676 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41644 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41662 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41680 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41670 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41658 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41636 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41672 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41624 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41626 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41668 -> 91.200.103.117:23561
Source: Network traffic Suricata IDS: 2030490 - Severity 1 - ET MALWARE ELF/MooBot Mirai DDoS Variant CnC Checkin M1 (Group String Len 1) : 192.168.2.15:41648 -> 91.200.103.117:23561
Connects to many ports of the same IP (likely port scanning)
Source: global traffic TCP traffic: 91.200.103.117 ports 1,2,3,5,6,23561
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.15:41616 -> 91.200.103.117:23561
Source: global traffic DNS traffic detected: DNS query: yi0key.heleh.com.vn
Source: global traffic DNS traffic detected: DNS query: daisy.ubuntu.com
Source: na.elf String found in binary or memory: http://91.200.103.117/%s
Source: na.elf, 5691.1.00007fedd8042000.00007fedd804d000.rw-.sdmp, sbolo.service.12.dr String found in binary or memory: http://91.200.103.117/bolubotnetarm
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 OKbolubotnetarmbolubotnetarm5bolubotnetarm6bolubotnetarm7bolubotnetmipsbolubotnetmpslbolubotnetx86_64bolubotnetsh4abcdefghijklmnopqrstuvwxyz/proc/%d/exe/tmp/%s%s%c/proc/self/cmdline/proc/%d/proc/self/proc/proc/%d/cmdlinernetstatwgetcurlbusybox/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/apache2srv/var/run/sbin/lib/etc/dev/home/Davincitelnetsshwatchdog/var/spoolsshd/usr/compress/bin//compress/bin/compress/usr/bashhttpdtelnetddropbearropbearencodersystem/root/dvr_gui//root/dvr_app//anko-app//opt/.x86.x86_64.arm.arm5.arm6.arm7.mips.mipsel.sh4.ppcx86x86_64armarm5arm6arm7mipsmipselsh4ppcx86.x86_64.arm.arm5.arm6.arm7.mips.mipsel.sh4.ppc.
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Source: classification engine Classification label: mal92.troj.linELF@0/3@34/0
Executes commands using a shell command-line interpreter
Source: /tmp/na.elf (PID: 5695) Shell command executed: sh -c "systemctl enable sbolo.service > /dev/null 2>&1" Jump to behavior
Executes the "systemctl" command used for controlling the systemd system and service manager
Source: /bin/sh (PID: 5701) Systemctl executable: /usr/bin/systemctl -> systemctl enable sbolo.service Jump to behavior
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/na.elf (PID: 5691) Queries kernel information via 'uname': Jump to behavior
Source: na.elf, 5691.1.00005612a8ed3000.00005612a9001000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: na.elf, 5691.1.00007ffd161d3000.00007ffd161f4000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: na.elf, 5691.1.00005612a8ed3000.00005612a9001000.rw-.sdmp Binary or memory string: V!/etc/qemu-binfmt/arm
Source: na.elf, 5691.1.00007ffd161d3000.00007ffd161f4000.rw-.sdmp Binary or memory string: Mx86_64/usr/bin/qemu-arm/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

Stealing of Sensitive Information
barindex
Yara detected Gafgyt
Source: Yara match File source: na.elf, type: SAMPLE
Source: Yara match File source: 5691.1.00007fedd8017000.00007fedd8035000.r-x.sdmp, type: MEMORY
Yara detected Moobot
Source: Yara match File source: na.elf, type: SAMPLE
Source: Yara match File source: 5691.1.00007fedd8017000.00007fedd8035000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: na.elf PID: 5691, type: MEMORYSTR
Yara detected Okiru
Source: Yara match File source: na.elf, type: SAMPLE
Source: Yara match File source: 5691.1.00007fedd8017000.00007fedd8035000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: na.elf PID: 5691, 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)
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 Gafgyt
Source: Yara match File source: na.elf, type: SAMPLE
Source: Yara match File source: 5691.1.00007fedd8017000.00007fedd8035000.r-x.sdmp, type: MEMORY
Yara detected Moobot
Source: Yara match File source: na.elf, type: SAMPLE
Source: Yara match File source: 5691.1.00007fedd8017000.00007fedd8035000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: na.elf PID: 5691, type: MEMORYSTR
Yara detected Okiru
Source: Yara match File source: na.elf, type: SAMPLE
Source: Yara match File source: 5691.1.00007fedd8017000.00007fedd8035000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: na.elf PID: 5691, 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
91.200.103.117
 yi0key.heleh.com.vn Germany
30823 COMBAHTONcombahtonGmbHDE true

Contacted Domains

Name IP Active
daisy.ubuntu.com 162.213.35.25 true
yi0key.heleh.com.vn 91.200.103.117 true