mirai | 3bd5be1f538f8cc195dbffd77d01e0c2509c56139a307b72d72d5bdbe2245584

General

Target

SecuriteInfo.com.Linux.Siggen.6954.6684.13146.elf
Size

249KB
MD5

038814ff17c4e2f6e286dc858e3c3e38
SHA1

57b63f3ed966b91f2dbc107e87d81201c329671b
SHA256

3bd5be1f538f8cc195dbffd77d01e0c2509c56139a307b72d72d5bdbe2245584
SHA512

5225c9dd4adcaab0547e267c5f207cc89a007268a6c2fe2c3be84d94d08ca92340c3552ac4d59109721224c480cee7a4995a94d1dbe9f3a2e498cef0b1e90e87
SSDEEP

6144:REn8buta+6HwGQJk8a+MrZP6Ffk+figv49e/CKvVA6tnY:RNr2JxahZPl+L8eaKvVAcY

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:

SecuriteInfo.com.Linux.Siggen.6954.6684.13146.elf

description ioc process

File opened for modification /dev/watchdog SecuriteInfo.com.Linux.Siggen.6954.6684.13146.elf

description	ioc	process
File opened for modification	/dev/watchdog	SecuriteInfo.com.Linux.Siggen.6954.6684.13146.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	1.0.0.1
Destination IP	1.0.0.1
Destination IP	94.247.43.254
Destination IP	192.3.165.37
Destination IP	168.138.12.137
Destination IP	134.195.4.2
Destination IP	114.114.114.114
Destination IP	168.138.12.137
Destination IP	1.0.0.1
Destination IP	54.36.111.116
Destination IP	114.114.114.114

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.1SeO7H crontab
Modifies init.d 1 TTPs 1 IoCs
Adds/modifies system service, likely for persistence.
persistence

Boot or Logon Autostart Execution
T1547

Processes:

SecuriteInfo.com.Linux.Siggen.6954.6684.13146.elf

description ioc process

File opened for modification /etc/init.d/dnsconfig SecuriteInfo.com.Linux.Siggen.6954.6684.13146.elf
Modifies systemd 1 TTPs 1 IoCs
Adds/ modifies systemd service files. Likely to achieve persistence.
persistence

Boot or Logon Autostart Execution
T1547

Processes:

SecuriteInfo.com.Linux.Siggen.6954.6684.13146.elf

description ioc process

File opened for modification /etc/systemd/system/dnsconfigs.service SecuriteInfo.com.Linux.Siggen.6954.6684.13146.elf

description	ioc	process
File opened for modification	/var/spool/cron/crontabs/tmp.1SeO7H	crontab

description	ioc	process
File opened for modification	/etc/init.d/dnsconfig	SecuriteInfo.com.Linux.Siggen.6954.6684.13146.elf

description	ioc	process
File opened for modification	/etc/systemd/system/dnsconfigs.service	SecuriteInfo.com.Linux.Siggen.6954.6684.13146.elf

Writes file to system bin folder 1 TTPs 2 IoCs

Hijack Execution Flow

T1574

Processes:

SecuriteInfo.com.Linux.Siggen.6954.6684.13146.elf

description	ioc	process
File opened for modification	/bin/watchdog	SecuriteInfo.com.Linux.Siggen.6954.6684.13146.elf
File opened for modification	/sbin/watchdog	SecuriteInfo.com.Linux.Siggen.6954.6684.13146.elf

Enumerates kernel/hardware configuration 1 TTPs 3 IoCs

Reads contents of /sys virtual filesystem to enumerate system information.

System Information Discovery

T1082

Processes:

systemctlsystemctlsystemctl

description	ioc	process
File opened for reading	/sys/fs/kdbus/0-system/bus	systemctl
File opened for reading	/sys/fs/kdbus/0-system/bus	systemctl
File opened for reading	/sys/fs/kdbus/0-system/bus	systemctl

Reads runtime system information 18 IoCs

Reads data from /proc virtual filesystem.

Processes:

systemctlsystemctlsystemctlcrontabmountSecuriteInfo.com.Linux.Siggen.6954.6684.13146.elfcpmount

description	ioc	process
File opened for reading	/proc/cmdline	systemctl
File opened for reading	/proc/self/stat	systemctl
File opened for reading	/proc/1/environ	systemctl
File opened for reading	/proc/cmdline	systemctl
File opened for reading	/proc/cmdline	systemctl
File opened for reading	/proc/1/environ	systemctl
File opened for reading	/proc/filesystems	crontab
File opened for reading	/proc/filesystems	systemctl
File opened for reading	/proc/self/stat	systemctl
File opened for reading	/proc/filesystems	systemctl
File opened for reading	/proc/filesystems	mount
File opened for reading	/proc/1/environ	systemctl
File opened for reading	/proc/self/stat	systemctl
File opened for reading	/proc/filesystems	systemctl
File opened for reading	/proc/self/exe	SecuriteInfo.com.Linux.Siggen.6954.6684.13146.elf
File opened for reading	/proc/670/cmdline	SecuriteInfo.com.Linux.Siggen.6954.6684.13146.elf
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/filesystems	mount

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

Processes:

SecuriteInfo.com.Linux.Siggen.6954.6684.13146.elf

description ioc process

File opened for modification /tmp/server_session.lock SecuriteInfo.com.Linux.Siggen.6954.6684.13146.elf

description	ioc	process
File opened for modification	/tmp/server_session.lock	SecuriteInfo.com.Linux.Siggen.6954.6684.13146.elf

/tmp/SecuriteInfo.com.Linux.Siggen.6954.6684.13146.elf
/tmp/SecuriteInfo.com.Linux.Siggen.6954.6684.13146.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:670

/bin/sh
/bin/sh -c "mount -o bind /tmp/nginx_server /proc/670/ > /dev/null 2>&1"
2⤵
PID:674

/bin/mount
mount -o bind /tmp/nginx_server /proc/670/
3⤵
- Reads runtime system information
PID:677

/bin/cp
cp -f /tmp/SecuriteInfo.com.Linux.Siggen.6954.6684.13146.elf /var/tmp/nginx_kel
2⤵
- Reads runtime system information
PID:672

/bin/sh
/bin/sh -c "mount -o bind /tmp/nginx_server /proc/684/ > /dev/null 2>&1"
2⤵
PID:685

/bin/mount
mount -o bind /tmp/nginx_server /proc/684/
3⤵
- Reads runtime system information
PID:690

/bin/sh
/bin/sh -c "ln -sf /etc/init.d/dnsconfig /etc/rcS.d/S99dnsconfig > /dev/null 2>&1"
2⤵
PID:687

/bin/ln
ln -sf /etc/init.d/dnsconfig /etc/rcS.d/S99dnsconfig
3⤵
PID:691

/bin/sh
/bin/sh -c "crontab /var/tmp/.recoverys"
2⤵
PID:686

/usr/bin/crontab
crontab /var/tmp/.recoverys
3⤵
- Creates/modifies Cron job
- Reads runtime system information
PID:689

/bin/sh
/bin/sh -c "ln -sf /etc/init.d/dnsconfig /etc/rc.d/S99dnsconfig > /dev/null 2>&1"
2⤵
PID:693

/bin/ln
ln -sf /etc/init.d/dnsconfig /etc/rc.d/S99dnsconfig
3⤵
PID:695

/bin/sh
/bin/sh -c "systemctl daemon-reload > /dev/null 2>&1"
2⤵
PID:697

/bin/systemctl
systemctl daemon-reload
3⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:700

/bin/sh
/bin/sh -c "ln -sf /etc/init.d/dnsconfig /etc/rc0.d/S99dnsconfig > /dev/null 2>&1"
2⤵
PID:699

/bin/ln
ln -sf /etc/init.d/dnsconfig /etc/rc0.d/S99dnsconfig
3⤵
PID:701

/bin/sh
/bin/sh -c "ln -sf /etc/init.d/dnsconfig /etc/rc1.d/S99dnsconfig > /dev/null 2>&1"
2⤵
PID:704

/bin/ln
ln -sf /etc/init.d/dnsconfig /etc/rc1.d/S99dnsconfig
3⤵
PID:706

/bin/sh
/bin/sh -c "ln -sf /etc/init.d/dnsconfig /etc/rc2.d/S99dnsconfig > /dev/null 2>&1"
2⤵
PID:708

/bin/ln
ln -sf /etc/init.d/dnsconfig /etc/rc2.d/S99dnsconfig
3⤵
PID:716

/bin/sh
/bin/sh -c "ln -sf /etc/init.d/dnsconfig /etc/rc3.d/S99dnsconfig > /dev/null 2>&1"
2⤵
PID:723

/bin/ln
ln -sf /etc/init.d/dnsconfig /etc/rc3.d/S99dnsconfig
3⤵
PID:725

/bin/sh
/bin/sh -c "ln -sf /etc/init.d/dnsconfig /etc/rc4.d/S99dnsconfig > /dev/null 2>&1"
2⤵
PID:727

/bin/ln
ln -sf /etc/init.d/dnsconfig /etc/rc4.d/S99dnsconfig
3⤵
PID:729

/bin/sh
/bin/sh -c "ln -sf /etc/init.d/dnsconfig /etc/rc5.d/S99dnsconfig > /dev/null 2>&1"
2⤵
PID:731

/bin/ln
ln -sf /etc/init.d/dnsconfig /etc/rc5.d/S99dnsconfig
3⤵
PID:733

/bin/sh
/bin/sh -c "ln -sf /etc/init.d/dnsconfig /etc/rc6.d/S99dnsconfig > /dev/null 2>&1"
2⤵
PID:736

/bin/ln
ln -sf /etc/init.d/dnsconfig /etc/rc6.d/S99dnsconfig
3⤵
PID:737

/bin/sh
/bin/sh -c "ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc.d/S99dnsconfigs > /dev/null 2>&1"
2⤵
PID:738

/bin/ln
ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc.d/S99dnsconfigs
3⤵
PID:739

/bin/sh
/bin/sh -c "ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc0.d/S99dnsconfigs > /dev/null 2>&1"
2⤵
PID:741

/bin/ln
ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc0.d/S99dnsconfigs
3⤵
PID:742

/bin/sh
/bin/sh -c "ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc1.d/S99dnsconfigs > /dev/null 2>&1"
2⤵
PID:743

/bin/ln
ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc1.d/S99dnsconfigs
3⤵
PID:745

/bin/sh
/bin/sh -c "ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc2.d/S99dnsconfigs > /dev/null 2>&1"
2⤵
PID:746

/bin/ln
ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc2.d/S99dnsconfigs
3⤵
PID:748

/bin/sh
/bin/sh -c "systemctl enable dnsconfigs.service > /dev/null 2>&1"
2⤵
PID:747

/bin/systemctl
systemctl enable dnsconfigs.service
3⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:749

/bin/sh
/bin/sh -c "ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc3.d/S99dnsconfigs > /dev/null 2>&1"
2⤵
PID:751

/bin/ln
ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc3.d/S99dnsconfigs
3⤵
PID:752

/bin/sh
/bin/sh -c "ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc4.d/S99dnsconfigs > /dev/null 2>&1"
2⤵
PID:754

/bin/ln
ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc4.d/S99dnsconfigs
3⤵
PID:755

/bin/sh
/bin/sh -c "ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc5.d/S99dnsconfigs > /dev/null 2>&1"
2⤵
PID:757

/bin/ln
ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc5.d/S99dnsconfigs
3⤵
PID:758

/bin/sh
/bin/sh -c "ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc6.d/S99dnsconfigs > /dev/null 2>&1"
2⤵
PID:763

/bin/ln
ln -sf /etc/rc.d/init.d/dnsconfigs /etc/rc6.d/S99dnsconfigs
3⤵
PID:767

/bin/sh
/bin/sh -c "systemctl start dnsconfigs.service > /dev/null 2>&1"
2⤵
PID:775

/bin/systemctl
systemctl start dnsconfigs.service
3⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:776

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Boot or Logon Autostart Execution

2

T1547

Hijack Execution Flow

1

T1574

Privilege Escalation

Scheduled Task/Job

1

T1053

Boot or Logon Autostart Execution

2

T1547

Hijack Execution Flow

1

T1574

Defense Evasion

Impair Defenses

1

T1562

Hijack Execution Flow

1

T1574

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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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
4B

MD5
6f233c9aa049a72fe67277f017dd1cd5

SHA1
df7d0728a9c601e9242e9bf46c823559240921dd

SHA256
b10d7a6c65649f6521f8c514d44d9e90e21467ad838a7251c7a9eaf8b19e37fc

SHA512
bc4b45c4263ecbcb8d2bc0ab116c1bad06ab8bd5e09f3fc0cbfe1cdbc2e7e4a7c3702ce6c90e61169f7d6ece3dcfd7c6da0540805559ffb57f1b0c2a49d54ca2

Download Submit
/var/spool/cron/crontabs/tmp.1SeO7H
Filesize
230B

MD5
83996d78f050dad1f8781968951d8625

SHA1
164fdcc81a54d639ddfae90df6c7ae349e6e9d6a

SHA256
4f0d84e6e56b008a6e569b37632737af0b96697c0871ff3db770e84e09bd81f9

SHA512
732cbc118eaf8e7be8584ae78743ca6606a2943d153241147a10a4174b06e409f27dd4816347a425666899ea1163e05385c60662cf99be854780e0277f6bb05c

Download Submit
/var/tmp/.recoverys
Filesize
37B

MD5
abe9a0e06459d029e0f5183965dbbf3b

SHA1
7e79e16ea12fed960bcee8eb5a9c6384fa61a2d1

SHA256
b2cfe7490d6dd2f81ede3ed9db30c78637f4a1e98ed746eaa00998e95d3de384

SHA512
955aece23c24e5b1ce32a90fa014a8a6fac39b68707a13f56cd1bfb07c79dfc59806942732990aaf925db5724f381827e2c35eba21fe95ce9a760760527048cd

Download Submit
/var/tmp/nginx_kel
Filesize
249KB

MD5
038814ff17c4e2f6e286dc858e3c3e38

SHA1
57b63f3ed966b91f2dbc107e87d81201c329671b

SHA256
3bd5be1f538f8cc195dbffd77d01e0c2509c56139a307b72d72d5bdbe2245584

SHA512
5225c9dd4adcaab0547e267c5f207cc89a007268a6c2fe2c3be84d94d08ca92340c3552ac4d59109721224c480cee7a4995a94d1dbe9f3a2e498cef0b1e90e87

Download Submit
memory/670-1-0x00008000-0x00089af4-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads