Linux Analysis Report
na.elf

Overview

General Information

Sample name: na.elf
Analysis ID: 1528135
MD5: ca74fadeb38e3c25862da48661b92d83
SHA1: 30082544d7ec0238ee10d18f26455308d85044dd
SHA256: e42ffc990819ad03c0154ed414cccd3939ae12cd9de7d82f7bf969a3276077b7
Tags: elfuser-abuse_ch
Infos:

Detection

Moobot, Okiru
Score: 64
Range: 0 - 100
Whitelisted: false

Signatures

Multi AV Scanner detection for submitted file
Yara detected Moobot
Yara detected Okiru
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

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/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/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.
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
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
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/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/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: mal64.troj.linELF@0/0@2/0
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/na.elf (PID: 5499) Queries kernel information via 'uname': Jump to behavior
Source: na.elf, 5499.1.00007ffde7d34000.00007ffde7d55000.rw-.sdmp Binary or memory string: x86_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
Source: na.elf, 5499.1.000056053e0d6000.000056053e204000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: na.elf, 5499.1.000056053e0d6000.000056053e204000.rw-.sdmp Binary or memory string: V!/etc/qemu-binfmt/arm
Source: na.elf, 5499.1.00007ffde7d34000.00007ffde7d55000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: na.elf, 5499.1.00007ffde7d34000.00007ffde7d55000.rw-.sdmp Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Stealing of Sensitive Information
barindex
Yara detected Moobot
Source: Yara match File source: na.elf, type: SAMPLE
Source: Yara match File source: 5499.1.00007fe720017000.00007fe720038000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: na.elf PID: 5499, type: MEMORYSTR
Yara detected Okiru
Source: Yara match File source: na.elf, type: SAMPLE
Source: Yara match File source: 5499.1.00007fe720017000.00007fe720038000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: na.elf PID: 5499, type: MEMORYSTR

Remote Access Functionality
barindex
Yara detected Moobot
Source: Yara match File source: na.elf, type: SAMPLE
Source: Yara match File source: 5499.1.00007fe720017000.00007fe720038000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: na.elf PID: 5499, type: MEMORYSTR
Yara detected Okiru
Source: Yara match File source: na.elf, type: SAMPLE
Source: Yara match File source: 5499.1.00007fe720017000.00007fe720038000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: na.elf PID: 5499, type: MEMORYSTR
windows-stand
⊘No contacted IP infos

Contacted Domains

Name IP Active
daisy.ubuntu.com 162.213.35.24 true