Malware Analysis Report

2024-11-15 05:12

Sample ID 240422-b8pcjadh94
Target b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf
SHA256 b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11
Tags
mirai mirai evasion
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11

Threat Level: Known bad

The file b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf was found to be: Known bad.

Malicious Activity Summary

mirai mirai evasion

Mirai family

Modifies Watchdog functionality

Deletes Audit logs

Deletes itself

Deletes journal logs

Deletes system logs

Deletes log files

Enumerates running processes

Changes its process name

Reads CPU attributes

Reads runtime system information

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-22 01:49

Signatures

Mirai family

mirai

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-22 01:49

Reported

2024-04-22 01:51

Platform

ubuntu2004-amd64-20240221-en

Max time kernel

149s

Max time network

139s

Command Line

[/tmp/b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf]

Signatures

Deletes Audit logs

evasion
Description Indicator Process Target
File deleted /var/log/audit/audit.log /tmp/b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf N/A

Deletes itself

Description Indicator Process Target
N/A N/A /tmp/b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf N/A

Deletes journal logs

evasion
Description Indicator Process Target
File deleted /var/log/journal/4816dd152e8c48ff97e9117d197c13d8/system.journal /tmp/b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf N/A

Deletes system logs

evasion
Description Indicator Process Target
File deleted /var/log/syslog /tmp/b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf N/A

Modifies Watchdog functionality

Description Indicator Process Target
File opened for modification /dev/watchdog /tmp/b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf N/A
File opened for modification /dev/misc/watchdog /tmp/b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf N/A

Deletes log files

Description Indicator Process Target
File deleted /var/log/auth.log /tmp/b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf N/A
File deleted /var/log/ubuntu-advantage.log /tmp/b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf N/A
File deleted /var/log/kern.log /tmp/b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf N/A
File deleted /var/log/apport.log /tmp/b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf N/A

Enumerates running processes

Changes its process name

Description Indicator Process Target
Changes the process name, possibly in an attempt to hide itself vlgb1fijr5nrfgn0g5feg8om /tmp/b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf N/A

Reads CPU attributes

Description Indicator Process Target
File opened for reading /sys/devices/system/cpu/online /usr/bin/pkill N/A
File opened for reading /sys/devices/system/cpu/online /usr/bin/pkill N/A
File opened for reading /sys/devices/system/cpu/online /usr/bin/pkill N/A
File opened for reading /sys/devices/system/cpu/online /usr/bin/pkill N/A
File opened for reading /sys/devices/system/cpu/online /usr/bin/pkill N/A
File opened for reading /sys/devices/system/cpu/online /usr/bin/pkill N/A
File opened for reading /sys/devices/system/cpu/online /usr/bin/pkill N/A
File opened for reading /sys/devices/system/cpu/online /usr/bin/pkill N/A
File opened for reading /sys/devices/system/cpu/online /usr/bin/pkill N/A
File opened for reading /sys/devices/system/cpu/online /usr/bin/pkill N/A

Reads runtime system information

Description Indicator Process Target
File opened for reading /proc/828/status /usr/bin/pkill N/A
File opened for reading /proc/1451/status /usr/bin/pkill N/A
File opened for reading /proc/1490/status /usr/bin/pkill N/A
File opened for reading /proc/1485/status /usr/bin/pkill N/A
File opened for reading /proc/2/status /usr/bin/pkill N/A
File opened for reading /proc/454/status /usr/bin/pkill N/A
File opened for reading /proc/483/cmdline /usr/bin/pkill N/A
File opened for reading /proc/1287/status /usr/bin/pkill N/A
File opened for reading /proc/1417/cmdline /usr/bin/pkill N/A
File opened for reading /proc/1486/cmdline /usr/bin/pkill N/A
File opened for reading /proc/84/status /usr/bin/pkill N/A
File opened for reading /proc/158/status /usr/bin/pkill N/A
File opened for reading /proc/301/cmdline /usr/bin/pkill N/A
File opened for reading /proc/438/cmdline /usr/bin/pkill N/A
File opened for reading /proc/514/cmdline /usr/bin/pkill N/A
File opened for reading /proc/930/status /usr/bin/pkill N/A
File opened for reading /proc/76/cmdline /usr/bin/pkill N/A
File opened for reading /proc/170/status /usr/bin/pkill N/A
File opened for reading /proc/777/status /usr/bin/pkill N/A
File opened for reading /proc/1050/status /usr/bin/pkill N/A
File opened for reading /proc/71/cmdline /usr/bin/pkill N/A
File opened for reading /proc/688/cmdline /usr/bin/pkill N/A
File opened for reading /proc/1182/status /usr/bin/pkill N/A
File opened for reading /proc/1492/cmdline /usr/bin/pkill N/A
File opened for reading /proc/self/auxv /usr/bin/pkill N/A
File opened for reading /proc/782/status /usr/bin/pkill N/A
File opened for reading /proc/945/status /usr/bin/pkill N/A
File opened for reading /proc/987/cmdline /usr/bin/pkill N/A
File opened for reading /proc/1287/cmdline /usr/bin/pkill N/A
File opened for reading /proc/777/cmdline /usr/bin/pkill N/A
File opened for reading /proc/1/status /usr/bin/pkill N/A
File opened for reading /proc/7/cmdline /usr/bin/pkill N/A
File opened for reading /proc/169/status /usr/bin/pkill N/A
File opened for reading /proc/688/status /usr/bin/pkill N/A
File opened for reading /proc/1075/status /usr/bin/pkill N/A
File opened for reading /proc/71/status /usr/bin/pkill N/A
File opened for reading /proc/163/status /usr/bin/pkill N/A
File opened for reading /proc/443/status /usr/bin/pkill N/A
File opened for reading /proc/201/cmdline /usr/bin/pkill N/A
File opened for reading /proc/666/status /usr/bin/pkill N/A
File opened for reading /proc/782/cmdline /usr/bin/pkill N/A
File opened for reading /proc/782/cmdline /usr/bin/pkill N/A
File opened for reading /proc/1071/status /usr/bin/pkill N/A
File opened for reading /proc/488/cmdline /usr/bin/pkill N/A
File opened for reading /proc/993/cmdline /tmp/b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf N/A
File opened for reading /proc/1396/cmdline /tmp/b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf N/A
File opened for reading /proc/1137/cmdline /tmp/b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf N/A
File opened for reading /proc/174/status /usr/bin/pkill N/A
File opened for reading /proc/301/cmdline /usr/bin/pkill N/A
File opened for reading /proc/443/status /usr/bin/pkill N/A
File opened for reading /proc/638/status /usr/bin/pkill N/A
File opened for reading /proc/1413/cmdline /usr/bin/pkill N/A
File opened for reading /proc/1488/status /usr/bin/pkill N/A
File opened for reading /proc/1062/cmdline /tmp/b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf N/A
File opened for reading /proc/12/status /usr/bin/pkill N/A
File opened for reading /proc/439/cmdline /usr/bin/pkill N/A
File opened for reading /proc/453/status /usr/bin/pkill N/A
File opened for reading /proc/609/status /usr/bin/pkill N/A
File opened for reading /proc/1419/cmdline /usr/bin/pkill N/A
File opened for reading /proc/1424/cmdline /usr/bin/pkill N/A
File opened for reading /proc/1481/cmdline /usr/bin/pkill N/A
File opened for reading /proc/177/status /usr/bin/pkill N/A
File opened for reading /proc/666/cmdline /usr/bin/pkill N/A
File opened for reading /proc/1033/status /usr/bin/pkill N/A

Processes

/tmp/b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf

[/tmp/b6538d6af7fc74e1f6d2d49177df9d83debbf5972f485812f5811920fd86ca11.elf]

/usr/local/sbin/pkill

[pkill wireshark]

/usr/local/bin/pkill

[pkill wireshark]

/usr/sbin/pkill

[pkill wireshark]

/usr/bin/pkill

[pkill wireshark]

/usr/local/sbin/pkill

[pkill dumpcap]

/usr/local/bin/pkill

[pkill dumpcap]

/usr/sbin/pkill

[pkill dumpcap]

/usr/bin/pkill

[pkill dumpcap]

/usr/local/sbin/pkill

[pkill tshark]

/usr/local/bin/pkill

[pkill tshark]

/usr/local/sbin/pkill

[pkill ettercap]

/usr/sbin/pkill

[pkill tshark]

/usr/bin/pkill

[pkill tshark]

/usr/local/bin/pkill

[pkill ettercap]

/usr/sbin/pkill

[pkill ettercap]

/usr/local/sbin/pkill

[pkill dsniff]

/usr/local/sbin/pkill

[pkill tcpdump]

/usr/bin/pkill

[pkill ettercap]

/usr/local/bin/pkill

[pkill dsniff]

/usr/local/sbin/pkill

[pkill ngrep]

/usr/local/sbin/pkill

[pkill tcpflow]

/usr/local/bin/pkill

[pkill tcpdump]

/usr/sbin/pkill

[pkill dsniff]

/usr/local/bin/pkill

[pkill ngrep]

/usr/local/bin/pkill

[pkill tcpflow]

/usr/bin/pkill

[pkill dsniff]

/usr/sbin/pkill

[pkill tcpdump]

/usr/sbin/pkill

[pkill ngrep]

/usr/bin/pkill

[pkill tcpdump]

/usr/sbin/pkill

[pkill tcpflow]

/usr/bin/pkill

[pkill ngrep]

/usr/bin/pkill

[pkill tcpflow]

/usr/local/sbin/pkill

[pkill windump]

/usr/local/bin/pkill

[pkill windump]

/usr/sbin/pkill

[pkill windump]

/usr/bin/pkill

[pkill windump]

/usr/local/sbin/pkill

[pkill netsniff-ng]

/usr/local/bin/pkill

[pkill netsniff-ng]

/usr/sbin/pkill

[pkill netsniff-ng]

/usr/bin/pkill

[pkill netsniff-ng]

/usr/local/sbin/rm

[rm -rf /usr/bin/ettercap]

/usr/local/bin/rm

[rm -rf /usr/bin/ettercap]

/usr/sbin/rm

[rm -rf /usr/bin/ettercap]

/usr/bin/rm

[rm -rf /usr/bin/ettercap]

/usr/local/sbin/rm

[rm -rf /usr/bin/dsniff]

/usr/local/bin/rm

[rm -rf /usr/bin/dsniff]

/usr/sbin/rm

[rm -rf /usr/bin/dsniff]

/usr/bin/rm

[rm -rf /usr/bin/dsniff]

/usr/local/sbin/rm

[rm -rf /usr/bin/ngrep]

/usr/local/bin/rm

[rm -rf /usr/bin/ngrep]

/usr/sbin/rm

[rm -rf /usr/bin/ngrep]

/usr/bin/rm

[rm -rf /usr/bin/ngrep]

/usr/local/sbin/rm

[rm -rf /usr/bin/tcpflow]

/usr/local/bin/rm

[rm -rf /usr/bin/tcpflow]

/usr/sbin/rm

[rm -rf /usr/bin/tcpflow]

/usr/bin/rm

[rm -rf /usr/bin/tcpflow]

/usr/local/sbin/rm

[rm -rf /usr/bin/netsniff-ng]

/usr/local/bin/rm

[rm -rf /usr/bin/netsniff-ng]

/usr/sbin/rm

[rm -rf /usr/bin/netsniff-ng]

/usr/bin/rm

[rm -rf /usr/bin/netsniff-ng]

/usr/local/sbin/rm

[rm -rf /usr/sbin/ngrep]

/usr/local/bin/rm

[rm -rf /usr/sbin/ngrep]

/usr/sbin/rm

[rm -rf /usr/sbin/ngrep]

/usr/bin/rm

[rm -rf /usr/sbin/ngrep]

/usr/local/sbin/rm

[rm -rf /usr/sbin/tcpflow]

/usr/local/bin/rm

[rm -rf /usr/sbin/tcpflow]

/usr/sbin/rm

[rm -rf /usr/sbin/tcpflow]

/usr/bin/rm

[rm -rf /usr/sbin/tcpflow]

/usr/local/sbin/rm

[rm -rf /usr/sbin/windump]

/usr/local/bin/rm

[rm -rf /usr/sbin/windump]

/usr/sbin/rm

[rm -rf /usr/sbin/windump]

/usr/bin/rm

[rm -rf /usr/sbin/windump]

/usr/local/sbin/rm

[rm -rf /usr/sbin/netsniff-ng]

/usr/local/bin/rm

[rm -rf /usr/sbin/netsniff-ng]

/usr/sbin/rm

[rm -rf /usr/sbin/netsniff-ng]

/usr/bin/rm

[rm -rf /usr/sbin/netsniff-ng]

/usr/local/sbin/rm

[rm -rf /usr/bin/tcpdump]

/usr/local/bin/rm

[rm -rf /usr/bin/tcpdump]

/usr/sbin/rm

[rm -rf /usr/bin/tcpdump]

/usr/bin/rm

[rm -rf /usr/bin/tcpdump]

/usr/local/sbin/rm

[rm -rf /usr/bin/tshark]

/usr/local/bin/rm

[rm -rf /usr/bin/tshark]

/usr/sbin/rm

[rm -rf /usr/bin/tshark]

/usr/bin/rm

[rm -rf /usr/bin/tshark]

/usr/local/sbin/rm

[rm -rf /usr/bin/wireshark]

/usr/local/bin/rm

[rm -rf /usr/bin/wireshark]

/usr/sbin/rm

[rm -rf /usr/bin/wireshark]

/usr/bin/rm

[rm -rf /usr/bin/wireshark]

/usr/local/sbin/rm

[rm -rf /usr/bin/dumpcap]

/usr/local/bin/rm

[rm -rf /usr/bin/dumpcap]

/usr/sbin/rm

[rm -rf /usr/bin/dumpcap]

/usr/bin/rm

[rm -rf /usr/bin/dumpcap]

/usr/local/sbin/rm

[rm -rf /usr/bin/windump]

/usr/local/bin/rm

[rm -rf /usr/bin/windump]

/usr/sbin/rm

[rm -rf /usr/bin/windump]

/usr/bin/rm

[rm -rf /usr/bin/windump]

/usr/local/sbin/rm

[rm -rf /usr/sbin/dsniff]

/usr/local/bin/rm

[rm -rf /usr/sbin/dsniff]

/usr/sbin/rm

[rm -rf /usr/sbin/dsniff]

/usr/bin/rm

[rm -rf /usr/sbin/dsniff]

/usr/local/sbin/rm

[rm -rf /usr/sbin/ettercap]

/usr/local/bin/rm

[rm -rf /usr/sbin/ettercap]

/usr/sbin/rm

[rm -rf /usr/sbin/ettercap]

/usr/bin/rm

[rm -rf /usr/sbin/ettercap]

/usr/local/sbin/rm

[rm -rf /usr/sbin/dumpcap]

/usr/local/bin/rm

[rm -rf /usr/sbin/dumpcap]

/usr/sbin/rm

[rm -rf /usr/sbin/dumpcap]

/usr/bin/rm

[rm -rf /usr/sbin/dumpcap]

/usr/local/sbin/rm

[rm -rf /usr/sbin/wireshark]

/usr/local/bin/rm

[rm -rf /usr/sbin/wireshark]

/usr/sbin/rm

[rm -rf /usr/sbin/wireshark]

/usr/bin/rm

[rm -rf /usr/sbin/wireshark]

/usr/local/sbin/rm

[rm -rf /usr/sbin/tshark]

/usr/local/bin/rm

[rm -rf /usr/sbin/tshark]

/usr/sbin/rm

[rm -rf /usr/sbin/tshark]

/usr/bin/rm

[rm -rf /usr/sbin/tshark]

/usr/local/sbin/rm

[rm -rf /usr/sbin/tcpdump]

/usr/local/bin/rm

[rm -rf /usr/sbin/tcpdump]

/usr/sbin/rm

[rm -rf /usr/sbin/tcpdump]

/usr/bin/rm

[rm -rf /usr/sbin/tcpdump]

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
US 1.1.1.1:53 tcpdown.su udp
US 1.1.1.1:53 daisy.ubuntu.com udp
US 1.1.1.1:53 daisy.ubuntu.com udp
US 1.1.1.1:53 tcpdown.su udp
US 104.168.45.11:21425 tcpdown.su tcp
US 1.1.1.1:53 cdn.fwupd.org udp
US 1.1.1.1:53 cdn.fwupd.org udp
US 1.1.1.1:53 daisy.ubuntu.com udp
US 151.101.66.49:443 cdn.fwupd.org tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 151.101.66.49:443 cdn.fwupd.org tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 1.1.1.1:53 daisy.ubuntu.com udp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 1.1.1.1:53 _https._tcp.motd.ubuntu.com udp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 1.1.1.1:53 _https._tcp.esm.ubuntu.com udp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 1.1.1.1:53 connectivity-check.ubuntu.com udp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
US 104.168.45.11:7722 tcpdown.su tcp
BR 179.106.55.219:11273 udp
BR 177.54.123.139:2707 udp
BR 186.194.199.30:44957 udp
BR 191.240.237.38:45511 udp
US 1.1.1.1:53 connectivity-check.ubuntu.com udp

Files

N/A