mirai | 4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28

General

Target

4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf
Size

274KB
MD5

6cef4e41b58be6fb4e2dd50c783c0c87
SHA1

fd5ded3422f64c3930e6541bd54dfb1083916f66
SHA256

4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28
SHA512

fbdd467bbf0a3b3cec9564075bfd5d977900acb502d1c15bfb9ba6920bea3cda92c62f15cf50c7335ffb43d6046581c0020a90cec3b6227b61a6b93135e5fe42
SSDEEP

6144:Uxc6tV4HX2TmFGR+WgB+Pjq32p5PPyMwsUpE9BNKaOA5IsY/Vi5iaL:KUtm+5QPjq3SIpLaOAGNK

Score

10^/10

mirai lzrd botnet persistence

Malware Config

Extracted

Family

mirai

Botnet

LZRD

Signatures

Mirai
Mirai is a prevalent Linux malware infecting exposed network devices.
botnet mirai
Modifies Watchdog functionality 1 TTPs 1 IoCs
Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.

Impair Defenses
T1562

Processes:

4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf

description ioc process

File opened for modification /dev/watchdog 4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf

description	ioc	process
File opened for modification	/dev/watchdog	4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf

Unexpected DNS network traffic destination 11 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Processes:

description	ioc
Destination IP	192.3.165.37
Destination IP	54.36.111.116
Destination IP	134.195.4.2
Destination IP	192.3.165.37
Destination IP	1.0.0.1
Destination IP	192.3.165.37
Destination IP	114.114.114.114
Destination IP	94.247.43.254
Destination IP	134.195.4.2
Destination IP	168.138.12.137
Destination IP	54.36.111.116

Creates/modifies Cron job 1 TTPs 1 IoCs
Cron allows running tasks on a schedule, and is commonly used for malware persistence.
persistence

Scheduled Task/Job
T1053

Processes:

crontab

description ioc process

File opened for modification /var/spool/cron/crontabs/tmp.4rM85Q crontab
Modifies init.d 1 TTPs 1 IoCs
Adds/modifies system service, likely for persistence.
persistence

Boot or Logon Autostart Execution
T1547

Processes:

4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf

description ioc process

File opened for modification /etc/init.d/dnsconfig 4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf

description	ioc	process
File opened for modification	/var/spool/cron/crontabs/tmp.4rM85Q	crontab

description	ioc	process
File opened for modification	/etc/init.d/dnsconfig	4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf

Modifies systemd 1 TTPs 1 IoCs

Adds/ modifies systemd service files. Likely to achieve persistence.

persistence

Boot or Logon Autostart Execution

T1547

Processes:

4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf

description	ioc	process
File opened for modification	/etc/systemd/system/dnsconfigs.service	4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf

Writes file to system bin folder 1 TTPs 2 IoCs

Hijack Execution Flow

T1574

Processes:

4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf

description	ioc	process
File opened for modification	/sbin/watchdog	4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf
File opened for modification	/bin/watchdog	4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf

Reads runtime system information 23 IoCs

Reads data from /proc virtual filesystem.

Processes:

cpsystemctlsystemctlsystemctl4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elfmountmount

description	ioc	process
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/filesystems	systemctl
File opened for reading	/proc/sys/kernel/osrelease	systemctl
File opened for reading	/proc/self/stat	systemctl
File opened for reading	/proc/1/sched	systemctl
File opened for reading	/proc/cmdline	systemctl
File opened for reading	/proc/self/exe	4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf
File opened for reading	/proc/filesystems	mount
File opened for reading	/proc/1/sched	systemctl
File opened for reading	/proc/cmdline	systemctl
File opened for reading	/proc/1/environ	systemctl
File opened for reading	/proc/sys/kernel/osrelease	systemctl
File opened for reading	/proc/filesystems	mount
File opened for reading	/proc/self/stat	systemctl
File opened for reading	/proc/1/environ	systemctl
File opened for reading	/proc/sys/kernel/osrelease	systemctl
File opened for reading	/proc/self/stat	systemctl
File opened for reading	/proc/1549/cmdline	4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf
File opened for reading	/proc/filesystems	systemctl
File opened for reading	/proc/1/sched	systemctl
File opened for reading	/proc/cmdline	systemctl
File opened for reading	/proc/filesystems	systemctl
File opened for reading	/proc/1/environ	systemctl

Writes file to tmp directory 1 IoCs
Malware often drops required files in the /tmp directory.

Processes:

4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf

description ioc process

File opened for modification /tmp/server_session.lock 4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf

description	ioc	process
File opened for modification	/tmp/server_session.lock	4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf

/tmp/4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf
/tmp/4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf
1⤵
- Modifies Watchdog functionality
- Modifies init.d
- Modifies systemd
- Writes file to system bin folder
- Reads runtime system information
- Writes file to tmp directory
PID:1549

/bin/sh
sh -c "mount -o bind /tmp/nginx_server /proc/1549/ > /dev/null 2>&1"
2⤵
PID:1551

/bin/mount
mount -o bind /tmp/nginx_server /proc/1549/
3⤵
- Reads runtime system information
PID:1552

/bin/cp
cp -f /tmp/4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28.elf /var/tmp/nginx_kel
2⤵
- Reads runtime system information
PID:1550

/bin/sh
sh -c "mount -o bind /tmp/nginx_server /proc/1555/ > /dev/null 2>&1"
2⤵
PID:1557

/bin/mount
mount -o bind /tmp/nginx_server /proc/1555/
3⤵
- Reads runtime system information
PID:1558

/bin/sh
sh -c "crontab /var/tmp/.recoverys"
2⤵
PID:1563

/usr/bin/crontab
crontab /var/tmp/.recoverys
3⤵
- Creates/modifies Cron job
PID:1569

/bin/sh
sh -c "ln -sf /etc/init.d/dnsconfig /etc/rcS.d/S99dnsconfig > /dev/null 2>&1"
2⤵
PID:1568

/bin/ln
ln -sf /etc/init.d/dnsconfig /etc/rcS.d/S99dnsconfig
3⤵
PID:1570

/bin/sh
sh -c "ln -sf /etc/init.d/dnsconfig /etc/rc.d/S99dnsconfig > /dev/null 2>&1"
2⤵
PID:1571

/bin/ln
ln -sf /etc/init.d/dnsconfig /etc/rc.d/S99dnsconfig
3⤵
PID:1573

/bin/sh
sh -c "systemctl daemon-reload > /dev/null 2>&1"
2⤵
PID:1572

/bin/systemctl
systemctl daemon-reload
3⤵
- Reads runtime system information
PID:1574

/bin/sh
sh -c "ln -sf /etc/init.d/dnsconfig /etc/rc0.d/S99dnsconfig > /dev/null 2>&1"
2⤵
PID:1575

/bin/ln
ln -sf /etc/init.d/dnsconfig /etc/rc0.d/S99dnsconfig
3⤵
PID:1576

/bin/sh
sh -c "ln -sf /etc/init.d/dnsconfig /etc/rc1.d/S99dnsconfig > /dev/null 2>&1"
2⤵
PID:1577

/bin/ln
ln -sf /etc/init.d/dnsconfig /etc/rc1.d/S99dnsconfig
3⤵
PID:1578

/bin/sh
sh -c "ln -sf /etc/init.d/dnsconfig /etc/rc2.d/S99dnsconfig > /dev/null 2>&1"
2⤵
PID:1579

/bin/ln
ln -sf /etc/init.d/dnsconfig /etc/rc2.d/S99dnsconfig
3⤵
PID:1580

/bin/sh
sh -c "ln -sf /etc/init.d/dnsconfig /etc/rc3.d/S99dnsconfig > /dev/null 2>&1"
2⤵
PID:1581

/bin/ln
ln -sf /etc/init.d/dnsconfig /etc/rc3.d/S99dnsconfig
3⤵
PID:1582

/bin/sh
sh -c "ln -sf /etc/init.d/dnsconfig /etc/rc4.d/S99dnsconfig > /dev/null 2>&1"
2⤵
PID:1583

/bin/ln
ln -sf /etc/init.d/dnsconfig /etc/rc4.d/S99dnsconfig
3⤵
PID:1584

/bin/sh
sh -c "ln -sf /etc/init.d/dnsconfig /etc/rc5.d/S99dnsconfig > /dev/null 2>&1"
2⤵
PID:1585

/bin/ln
ln -sf /etc/init.d/dnsconfig /etc/rc5.d/S99dnsconfig
3⤵
PID:1586

/bin/sh
sh -c "ln -sf /etc/init.d/dnsconfig /etc/rc6.d/S99dnsconfig > /dev/null 2>&1"
2⤵
PID:1587

/bin/ln
ln -sf /etc/init.d/dnsconfig /etc/rc6.d/S99dnsconfig
3⤵
PID:1588

/bin/sh
sh -c "ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc.d/S99dnsconfigs > /dev/null 2>&1"
2⤵
PID:1589

/bin/ln
ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc.d/S99dnsconfigs
3⤵
PID:1590

/bin/sh
sh -c "ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc0.d/S99dnsconfigs > /dev/null 2>&1"
2⤵
PID:1591

/bin/ln
ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc0.d/S99dnsconfigs
3⤵
PID:1592

/bin/sh
sh -c "ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc1.d/S99dnsconfigs > /dev/null 2>&1"
2⤵
PID:1593

/bin/ln
ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc1.d/S99dnsconfigs
3⤵
PID:1594

/bin/sh
sh -c "ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc2.d/S99dnsconfigs > /dev/null 2>&1"
2⤵
PID:1595

/bin/ln
ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc2.d/S99dnsconfigs
3⤵
PID:1596

/bin/sh
sh -c "ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc3.d/S99dnsconfigs > /dev/null 2>&1"
2⤵
PID:1597

/bin/ln
ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc3.d/S99dnsconfigs
3⤵
PID:1598

/bin/sh
sh -c "ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc4.d/S99dnsconfigs > /dev/null 2>&1"
2⤵
PID:1599

/bin/ln
ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc4.d/S99dnsconfigs
3⤵
PID:1600

/bin/sh
sh -c "ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc5.d/S99dnsconfigs > /dev/null 2>&1"
2⤵
PID:1601

/bin/ln
ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc5.d/S99dnsconfigs
3⤵
PID:1602

/bin/sh
sh -c "ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc6.d/S99dnsconfigs > /dev/null 2>&1"
2⤵
PID:1603

/bin/ln
ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc6.d/S99dnsconfigs
3⤵
PID:1604

/bin/sh
sh -c "systemctl enable dnsconfigs.service > /dev/null 2>&1"
2⤵
PID:1628

/bin/systemctl
systemctl enable dnsconfigs.service
3⤵
- Reads runtime system information
PID:1629

/bin/sh
sh -c "systemctl start dnsconfigs.service > /dev/null 2>&1"
2⤵
PID:1650

/bin/systemctl
systemctl start dnsconfigs.service
3⤵
- Reads runtime system information
PID:1651

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

2

T1547

Hijack Execution Flow

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Hijack Execution Flow

Scheduled Task/Job

Defense Evasion

Hijack Execution Flow

Impair Defenses

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

/etc/init.d/dnsconfig

Filesize
1KB

MD5
df56ea52b8cee93884f3872d25a85db0

SHA1
2fd0c7407ed67253a807d1d01c6ffd3467edaf8e

SHA256
a402d683e16519793b06f663163d750b4e82922cf3b18af5a655de41328b9bf5

SHA512
e390943755721ba7f0210439f0fc8e5e3daaf98ba1df923464aa547c5a7c6f941240658c8fa59270d6f73539fd8b0a04d7bdc9c407f13d9301588d5cf9aa68da

Download Submit
/etc/systemd/system/dnsconfigs.service

Filesize
174B

MD5
900f683b08977636b092fcbfa1ad8a42

SHA1
6d521f5c3e862f1106d9ac6a3a654e57e6814333

SHA256
71d21310d1c7dbb935f3b61311403b0ec0fa32dc73f91720365416a646c2dfb3

SHA512
50b5426500d8b5dccb7fd71fe9a448ae1c76770890ba86c37e7decbf2ca1f0e1cd20c50996260f37114ba2bdb16ae927e4afad241a51e3d22112ada8e25604b0

Download Submit
/tmp/server_session.lock

Filesize
5B

MD5
2d3ca92613f0112031d5d31e357a2f6f

SHA1
4c63f6cf2aeaae2aa4b965f2d491d6856f68a1fd

SHA256
a24798442f1d02eb6f29d6ea4e159824f0130089946f2312933a239fb6b00c15

SHA512
5bd9bcf7c076ab16328130b8e269e10e85b9d9db6939c862378905a008db746b05c5b0a43230c317e69019ead5eb7538ade733fb66becfd56c5dd71c1bac8243

Download Submit
/var/spool/cron/crontabs/tmp.4rM85Q

Filesize
230B

MD5
07a7088142eb9f1bf625853f5ba375fb

SHA1
0019ca0890b3c7db431d0650e3df32afcfa8d7c7

SHA256
31d06908bd66c343f5dda12ee0b8cec474813bfe2ac420a09d960190e1916331

SHA512
8eccce3995da1fdd844cedf0260a2f0b1644aba1aa7551bb74364d709ac7b2ac3f26ed1cc4faaf723b68b62ebc6d9d58af738ddab2c641a95009b32280fa4801

Download Submit
/var/tmp/.recoverys

Filesize
37B

MD5
abe9a0e06459d029e0f5183965dbbf3b

SHA1
7e79e16ea12fed960bcee8eb5a9c6384fa61a2d1

SHA256
b2cfe7490d6dd2f81ede3ed9db30c78637f4a1e98ed746eaa00998e95d3de384

SHA512
955aece23c24e5b1ce32a90fa014a8a6fac39b68707a13f56cd1bfb07c79dfc59806942732990aaf925db5724f381827e2c35eba21fe95ce9a760760527048cd

Download Submit
/var/tmp/nginx_kel

Filesize
274KB

MD5
6cef4e41b58be6fb4e2dd50c783c0c87

SHA1
fd5ded3422f64c3930e6541bd54dfb1083916f66

SHA256
4730105d00af6296688da0b51f3b9be8ea81a4844a3a1d9996256fc218920f28

SHA512
fbdd467bbf0a3b3cec9564075bfd5d977900acb502d1c15bfb9ba6920bea3cda92c62f15cf50c7335ffb43d6046581c0020a90cec3b6227b61a6b93135e5fe42

Download Submit
memory/1549-1-0x0000000000400000-0x00000000006a6bf8-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads