Linux Analysis Report
ew3OL4dYca.elf

Overview

General Information

Sample name: ew3OL4dYca.elf
renamed because original name is a hash value
Original sample name: f3f909238b26928d0587e272fc702866.elf
Analysis ID: 1428847
MD5: f3f909238b26928d0587e272fc702866
SHA1: aa2a80dc9db8553ea5e17958130662955ade4e10
SHA256: 7452a8cd6d737917f4d19adcef67e8cc47b643da9d703a37fb2af6644a78edc1
Tags: 32elfmipsmirai
Infos:

Detection

Score: 64
Range: 0 - 100
Whitelisted: false

Signatures

Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Sample deletes itself
Sample tries to kill multiple processes (SIGKILL)
Enumerates processes within the "proc" file system
Found strings indicative of a multi-platform dropper
Sample has stripped symbol table
Sample listens on a socket
Sample tries to kill a process (SIGKILL)
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
Antivirus / Scanner detection for submitted sample
Source: ew3OL4dYca.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: ew3OL4dYca.elf ReversingLabs: Detection: 60%
Found strings indicative of a multi-platform dropper
Source: ew3OL4dYca.elf String: /proc//exe%s/%s/proc/%s/cmdlinerwgetcurlnetstatgreppslsmvechokillbashrebootshutdownhaltpowerofffaggot got malware'd/tmp/opt/home/dev/var/sbin/proc/self/exe
Sample listens on a socket
Source: /tmp/ew3OL4dYca.elf (PID: 6235) Socket: 127.0.0.1::39123 Jump to behavior
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Source: global traffic TCP traffic: 192.168.2.23:43928 -> 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: 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 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: 1.1.1.1
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: 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: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown DNS traffic detected: queries for: tcpdown.su
Source: unknown Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 42836 -> 443

System Summary
barindex
Sample tries to kill multiple processes (SIGKILL)
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 721, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 904, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 912, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 918, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 936, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 1601, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 1638, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 1877, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 6239, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 6243, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 6265, result: successful Jump to behavior
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Sample tries to kill a process (SIGKILL)
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 721, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 904, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 912, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 918, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 936, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 1601, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 1638, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 1877, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 6239, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 6243, result: successful Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) SIGKILL sent: pid: 6265, result: successful Jump to behavior
Source: classification engine Classification label: mal64.spre.evad.linELF@0/0@6/0
Enumerates processes within the "proc" file system
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1582/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1582/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1582/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1582/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1582/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1582/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/3088/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/3088/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/3088/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/3088/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/3088/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/3088/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/230/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/230/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/230/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/230/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/230/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/230/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/230/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/110/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/110/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/110/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/110/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/110/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/110/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/110/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/231/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/231/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/231/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/231/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/231/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/231/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/231/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/111/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/111/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/111/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/111/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/111/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/111/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/111/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/232/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/232/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/232/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/232/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/232/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/232/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/232/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1579/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1579/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1579/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1579/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1579/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1579/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/112/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/112/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/112/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/112/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/112/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/112/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/112/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/233/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/233/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/233/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/233/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/233/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/233/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/233/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1699/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1699/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1699/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1699/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1699/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1699/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/113/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/113/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/113/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/113/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/113/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/113/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/113/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/234/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/234/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/234/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/234/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/234/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/234/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/234/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1335/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1335/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1335/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1335/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1335/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1335/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1698/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1698/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1698/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1698/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1698/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/1698/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/114/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/114/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/114/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/114/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/114/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/114/cmdline Jump to behavior
Source: /tmp/ew3OL4dYca.elf (PID: 6240) File opened: /proc/114/cmdline Jump to behavior

Hooking and other Techniques for Hiding and Protection
barindex
Sample deletes itself
Source: /tmp/ew3OL4dYca.elf (PID: 6235) File: /tmp/ew3OL4dYca.elf Jump to behavior
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/ew3OL4dYca.elf (PID: 6235) Queries kernel information via 'uname': Jump to behavior
Source: ew3OL4dYca.elf, 6243.1.00005569fa0d9000.00005569fa160000.rw-.sdmp Binary or memory string: /sbin/mount.vmhgfs
Source: ew3OL4dYca.elf, 6235.1.00005569fa0d9000.00005569fa160000.rw-.sdmp, ew3OL4dYca.elf, 6239.1.00005569fa0d9000.00005569fa160000.rw-.sdmp, ew3OL4dYca.elf, 6243.1.00005569fa0d9000.00005569fa160000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/mipsel
Source: ew3OL4dYca.elf, 6235.1.00007fff904ed000.00007fff9050e000.rw-.sdmp, ew3OL4dYca.elf, 6239.1.00007fff904ed000.00007fff9050e000.rw-.sdmp, ew3OL4dYca.elf, 6243.1.00007fff904ed000.00007fff9050e000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-mipsel/tmp/ew3OL4dYca.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/ew3OL4dYca.elf
Source: ew3OL4dYca.elf, 6239.1.00007fc990468000.00007fc990474000.rw-.sdmp Binary or memory string: vmware
Source: ew3OL4dYca.elf, 6243.1.00005569fa0d9000.00005569fa160000.rw-.sdmp Binary or memory string: iU!/sbin/mount.vmhgfs
Source: ew3OL4dYca.elf, 6239.1.00007fc990468000.00007fc990474000.rw-.sdmp Binary or memory string: F`/tmp/systemd-private-ec795e01d534441298b2bf519e4c51fc-systemd-timedated.service-Qc8Usi/tmpP/tmp/systemd-private-ec795e01d534441298b2bf519e4c51fc-fwupd.service-gB0a9fT/tmp/systemd-private-ec795e01d534441298b2bf519e4c51fc-fwupd.service-gB0a9f/tmpX/tmp/systemd-private-ec795e01d534441298b2bf519e4c51fc-systemd-logind.service-IofUpj\/tmp/systemd-private-ec795e01d534441298b2bf519e4c51fc-systemd-logind.service-IofUpj/tmp$/tmp/vmware-root_721-42905598894/tmp/snap.lxdF
Source: ew3OL4dYca.elf, 6239.1.00007fc990468000.00007fc990474000.rw-.sdmp Binary or memory string: /tmp/vmware-root_721-4290559889
Source: ew3OL4dYca.elf, 6239.1.00005569fa0d9000.00005569fa160000.rw-.sdmp Binary or memory string: iU1/var/log/installer/block1/tmp/vmware-root_721-42905598890
Source: ew3OL4dYca.elf, 6235.1.00007fff904ed000.00007fff9050e000.rw-.sdmp, ew3OL4dYca.elf, 6239.1.00007fff904ed000.00007fff9050e000.rw-.sdmp, ew3OL4dYca.elf, 6243.1.00007fff904ed000.00007fff9050e000.rw-.sdmp Binary or memory string: /usr/bin/qemu-mipsel
Source: ew3OL4dYca.elf, 6235.1.00005569fa0d9000.00005569fa160000.rw-.sdmp, ew3OL4dYca.elf, 6239.1.00005569fa0d9000.00005569fa160000.rw-.sdmp, ew3OL4dYca.elf, 6243.1.00005569fa0d9000.00005569fa160000.rw-.sdmp Binary or memory string: iU!/etc/qemu-binfmt/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
172.245.119.63
 unknown United States
36352 AS-COLOCROSSINGUS false
109.202.202.202
 unknown Switzerland
13030 INIT7CH 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
tcpdown.su 185.216.70.250 true
tcpdown.suE unknown unknown