Linux Analysis Report
iKNw6OUwtY.elf

Overview

General Information

Sample name: iKNw6OUwtY.elf
renamed because original name is a hash value
Original sample name: 4f378ab61a1e8269bef1ce3782481eb6.elf
Analysis ID: 1448100
MD5: 4f378ab61a1e8269bef1ce3782481eb6
SHA1: d49977ec7cf19068bf37805b09abbda8887222bd
SHA256: 058497a74000b3be9f6509d711f3d42e23613d394195b0020a05b8b6412e5a6d
Tags: 32elfmipsmirai
Infos:

Detection

Okiru
Score: 68
Range: 0 - 100
Whitelisted: false

Signatures

Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Yara detected Okiru
Sample deletes itself
Detected TCP or UDP traffic on non-standard ports
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 listens on a socket
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

AV Detection

barindex
Source: iKNw6OUwtY.elf Avira: detected
Source: iKNw6OUwtY.elf ReversingLabs: Detection: 36%
Source: iKNw6OUwtY.elf Virustotal: Detection: 43% Perma Link
Source: iKNw6OUwtY.elf String: /proc/self/exe/proc/wgetcurlbusybox/exe[killer] killed pid (%s)
Source: global traffic TCP traffic: 192.168.2.23:33130 -> 93.123.39.20:51321
Source: /tmp/iKNw6OUwtY.elf (PID: 6226) Socket: 127.0.0.1::51101 Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) Socket: 0.0.0.0::23 Jump to behavior
Source: global traffic TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
Source: global traffic TCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
Source: global traffic TCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown TCP traffic detected without corresponding DNS query: 93.123.39.20
Source: unknown Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 42836 -> 443
Source: Initial sample String containing 'busybox' found: busybox
Source: Initial sample String containing 'busybox' found: /bin/busybox
Source: Initial sample String containing 'busybox' found: /proc/self/exe/proc/wgetcurlbusybox/exe[killer] killed pid (%s)
Source: Initial sample String containing 'busybox' found: var/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/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//dev/watchdog/dev/misc/watchdogunknown
Source: ELF static info symbol of initial sample .symtab present: no
Source: classification engine Classification label: mal68.troj.evad.linELF@0/0@0/0
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1582/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2033/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1612/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1579/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1699/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1335/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1698/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2028/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1334/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1576/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2025/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2146/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/910/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/912/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/517/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/759/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/918/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1594/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1349/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1623/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/761/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1622/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/884/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1983/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2038/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1344/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1465/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1586/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1860/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1463/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/800/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/801/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1629/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1627/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1900/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/491/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2050/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1877/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/772/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1633/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1599/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1632/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/774/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1477/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/654/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/896/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1476/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1872/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2048/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/655/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1475/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/656/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/777/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/657/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/658/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/419/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/936/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1639/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1638/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1809/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1494/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1890/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2063/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2062/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1888/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1886/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/420/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1489/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/785/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1642/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/788/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/667/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/789/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1648/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2078/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2077/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2074/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/670/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/793/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1656/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1654/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/674/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1532/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/796/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/675/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/797/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/676/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/677/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2069/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2102/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/799/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2080/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2084/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2083/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1668/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1664/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1389/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/720/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2114/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/721/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/1661/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2079/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/847/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2097/exe Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6233) File opened: /proc/2096/exe Jump to behavior
Source: /usr/bin/dash (PID: 6201) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.GHk0AUMJUj /tmp/tmp.1hKv6OiAhJ /tmp/tmp.3CI9tfFBCc Jump to behavior
Source: /usr/bin/dash (PID: 6210) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.GHk0AUMJUj /tmp/tmp.1hKv6OiAhJ /tmp/tmp.3CI9tfFBCc Jump to behavior

Hooking and other Techniques for Hiding and Protection

barindex
Source: /tmp/iKNw6OUwtY.elf (PID: 6226) File: /tmp/iKNw6OUwtY.elf Jump to behavior
Source: /tmp/iKNw6OUwtY.elf (PID: 6226) Queries kernel information via 'uname': Jump to behavior
Source: iKNw6OUwtY.elf, 6226.1.000055ff95b49000.000055ff95bd0000.rw-.sdmp, iKNw6OUwtY.elf, 6228.1.000055ff95b49000.000055ff95bd0000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/mips
Source: iKNw6OUwtY.elf, 6226.1.000055ff95b49000.000055ff95bd0000.rw-.sdmp, iKNw6OUwtY.elf, 6228.1.000055ff95b49000.000055ff95bd0000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/mips
Source: iKNw6OUwtY.elf, 6226.1.00007fffd70da000.00007fffd70fb000.rw-.sdmp, iKNw6OUwtY.elf, 6228.1.00007fffd70da000.00007fffd70fb000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-mips/tmp/iKNw6OUwtY.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/iKNw6OUwtY.elf
Source: iKNw6OUwtY.elf, 6226.1.00007fffd70da000.00007fffd70fb000.rw-.sdmp, iKNw6OUwtY.elf, 6228.1.00007fffd70da000.00007fffd70fb000.rw-.sdmp Binary or memory string: /usr/bin/qemu-mips

Stealing of Sensitive Information

barindex
Source: Yara match File source: iKNw6OUwtY.elf, type: SAMPLE
Source: Yara match File source: 6226.1.00007f4580400000.00007f4580412000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 6228.1.00007f4580400000.00007f4580412000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: iKNw6OUwtY.elf PID: 6226, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: iKNw6OUwtY.elf PID: 6228, type: MEMORYSTR

Remote Access Functionality

barindex
Source: Yara match File source: iKNw6OUwtY.elf, type: SAMPLE
Source: Yara match File source: 6226.1.00007f4580400000.00007f4580412000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 6228.1.00007f4580400000.00007f4580412000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: iKNw6OUwtY.elf PID: 6226, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: iKNw6OUwtY.elf PID: 6228, type: MEMORYSTR
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs