d546509ab6670f9ff31783ed72875dfc0f37fa2b666bd5870eecaaed2ebea4a8

General

Target

Mozi.a
Size

106KB
MD5

4dde761681684d7edad4e5e1ffdb940b
SHA1

2327be693bc11a618c380d7d3abc2382d870d48b
SHA256

d546509ab6670f9ff31783ed72875dfc0f37fa2b666bd5870eecaaed2ebea4a8
SHA512

91a61c719128f263f9f95736d55895954cc468c74ff469ee061d35ec382c50b9165e9a5427dc46a835dac6ae0e6e1f9819632475f68b98a907b53196bd4eb02a
SSDEEP

1536:3aQiZDMyqIlMBZ/R0F4E4kcHiNq98wk9njKZjjLuYo68864sNHFEzv7Ld76divkE:KzDMyqIMBZ/R0ufhBmgZy9yNsNmPtcE

Score

9^/10

persistence upx

Malware Config

Signatures

Modifies the Watchdog daemon 1 TTPs
Malware like Mirai modify the Watchdog to prevent it restarting an infected system.

Impair Defenses
T1562
Writes file to system bin folder 1 TTPs 2 IoCs

Hijack Execution Flow
T1574

Processes:

description ioc

File opened for modification /sbin/watchdog
File opened for modification /bin/watchdog
Patched UPX-packed file 1 IoCs
Sample is packed with UPX but required header fields are zeroed out to prevent unpacking with the default UPX tool.

Processes:

resource yara_rule

/usr/networks patched_upx
Changes its process name 1 IoCs

Processes:

iptables

description ioc pid process

Changes the process name, possibly in an attempt to hide itself dropbear 326 iptables
Enumerates active TCP sockets 1 TTPs 1 IoCs
Gets active TCP sockets from /proc virtual filesystem.

System Network Connections Discovery
T1049

Processes:

description ioc

File opened for reading /proc/net/tcp
Modifies init.d 1 TTPs 2 IoCs
Adds/modifies system service, likely for persistence.
persistence

Boot or Logon Autostart Execution
T1547

Processes:

description ioc

File opened for modification /etc/init.d/S95baby.sh
File opened for modification /etc/init.d/hwclock.sh
UPX packed file 1 IoCs
Detects executables packed with UPX/modified UPX open source packer.
upx

Processes:

resource yara_rule

/usr/networks upx
Reads system network configuration 1 TTPs 2 IoCs
Uses contents of /proc filesystem to enumerate network settings.

System Network Configuration Discovery
T1016

Processes:

description ioc

File opened for reading /proc/net/raw
File opened for reading /proc/net/tcp

description	ioc
File opened for modification	/sbin/watchdog
File opened for modification	/bin/watchdog

resource	yara_rule
/usr/networks	patched_upx

description	ioc	pid	process
Changes the process name, possibly in an attempt to hide itself	dropbear	326	iptables

description	ioc
File opened for reading	/proc/net/tcp

description	ioc
File opened for modification	/etc/init.d/S95baby.sh
File opened for modification	/etc/init.d/hwclock.sh

resource	yara_rule
/usr/networks	upx

description	ioc
File opened for reading	/proc/net/raw
File opened for reading	/proc/net/tcp

/tmp/Mozi.a
/tmp/Mozi.a
1⤵
PID:324

sh
sh -c "iptables -I INPUT -p tcp --destination-port 22 -j DROP"
1⤵
PID:331

iptables
iptables -I INPUT -p tcp --destination-port 22 -j DROP
2⤵
- Changes its process name
PID:332

sh
sh -c "iptables -I INPUT -p tcp --destination-port 23 -j DROP"
1⤵
PID:338

iptables
iptables -I INPUT -p tcp --destination-port 23 -j DROP
2⤵
PID:341

sh
sh -c "iptables -I INPUT -p tcp --destination-port 2323 -j DROP"
1⤵
PID:342

iptables
iptables -I INPUT -p tcp --destination-port 2323 -j DROP
2⤵
PID:343

sh
sh -c "iptables -I OUTPUT -p tcp --source-port 22 -j DROP"
1⤵
PID:344

iptables
iptables -I OUTPUT -p tcp --source-port 22 -j DROP
2⤵
PID:345

sh
sh -c "iptables -I OUTPUT -p tcp --source-port 23 -j DROP"
1⤵
PID:346

iptables
iptables -I OUTPUT -p tcp --source-port 23 -j DROP
2⤵
PID:347

sh
sh -c "iptables -I OUTPUT -p tcp --source-port 2323 -j DROP"
1⤵
PID:348

iptables
iptables -I OUTPUT -p tcp --source-port 2323 -j DROP
2⤵
PID:349

sh
sh -c "iptables -I INPUT -p tcp --destination-port 58000 -j DROP"
1⤵
PID:350

iptables
iptables -I INPUT -p tcp --destination-port 58000 -j DROP
2⤵
PID:351

sh
sh -c "iptables -I OUTPUT -p tcp --source-port 58000 -j DROP"
1⤵
PID:352

iptables
iptables -I OUTPUT -p tcp --source-port 58000 -j DROP
2⤵
PID:353

sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer URL \"http://127.0.0.1\""
1⤵
PID:354

sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer ConnectionRequestPassword \"acsMozi\""
1⤵
PID:355

sh
sh -c "iptables -I INPUT -p tcp --destination-port 35000 -j DROP"
1⤵
PID:356

iptables
iptables -I INPUT -p tcp --destination-port 35000 -j DROP
2⤵
PID:357

sh
sh -c "iptables -I INPUT -p tcp --destination-port 50023 -j DROP"
1⤵
PID:358

iptables
iptables -I INPUT -p tcp --destination-port 50023 -j DROP
2⤵
PID:359

sh
sh -c "iptables -I OUTPUT -p tcp --source-port 50023 -j DROP"
1⤵
PID:360

iptables
iptables -I OUTPUT -p tcp --source-port 50023 -j DROP
2⤵
PID:361

sh
sh -c "iptables -I OUTPUT -p tcp --source-port 35000 -j DROP"
1⤵
PID:362

iptables
iptables -I OUTPUT -p tcp --source-port 35000 -j DROP
2⤵
PID:363

sh
sh -c "iptables -I INPUT -p tcp --destination-port 7547 -j DROP"
1⤵
PID:364

iptables
iptables -I INPUT -p tcp --destination-port 7547 -j DROP
2⤵
PID:365

sh
sh -c "iptables -I OUTPUT -p tcp --source-port 7547 -j DROP"
1⤵
PID:366

iptables
iptables -I OUTPUT -p tcp --source-port 7547 -j DROP
2⤵
PID:367

sh
sh -c "iptables -I INPUT -p tcp --destination-port 47487 -j ACCEPT"
1⤵
PID:368

iptables
iptables -I INPUT -p tcp --destination-port 47487 -j ACCEPT
2⤵
PID:369

sh
sh -c "iptables -I OUTPUT -p tcp --source-port 47487 -j ACCEPT"
1⤵
PID:370

iptables
iptables -I OUTPUT -p tcp --source-port 47487 -j ACCEPT
2⤵
PID:371

sh
sh -c "iptables -I PREROUTING -t nat -p tcp --destination-port 47487 -j ACCEPT"
1⤵
PID:372

iptables
iptables -I PREROUTING -t nat -p tcp --destination-port 47487 -j ACCEPT
2⤵
PID:373

sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --source-port 47487 -j ACCEPT"
1⤵
PID:382

iptables
iptables -I POSTROUTING -t nat -p tcp --source-port 47487 -j ACCEPT
2⤵
PID:383

sh
sh -c "iptables -I INPUT -p udp --destination-port 60408 -j ACCEPT"
1⤵
PID:384

iptables
iptables -I INPUT -p udp --destination-port 60408 -j ACCEPT
2⤵
PID:385

sh
sh -c "iptables -I OUTPUT -p udp --source-port 60408 -j ACCEPT"
1⤵
PID:386

iptables
iptables -I OUTPUT -p udp --source-port 60408 -j ACCEPT
2⤵
PID:387

sh
sh -c "iptables -I PREROUTING -t nat -p udp --destination-port 60408 -j ACCEPT"
1⤵
PID:388

iptables
iptables -I PREROUTING -t nat -p udp --destination-port 60408 -j ACCEPT
2⤵
PID:389

sh
sh -c "iptables -I POSTROUTING -t nat -p udp --source-port 60408 -j ACCEPT"
1⤵
PID:390

iptables
iptables -I POSTROUTING -t nat -p udp --source-port 60408 -j ACCEPT
2⤵
PID:391

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Hijack Execution Flow

1

T1574

Boot or Logon Autostart Execution

1

T1547

Privilege Escalation

Hijack Execution Flow

1

T1574

Boot or Logon Autostart Execution

1

T1547

Defense Evasion

Impair Defenses

1

T1562

Hijack Execution Flow

1

T1574

Credential Access

Discovery

System Network Connections Discovery

1

T1049

System Network Configuration Discovery

1

T1016

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

/etc/rcS.d/S95baby.sh
Filesize
25B

MD5
1b3235ba10fc04836c941d3d27301956

SHA1
8909655763143702430b8c58b3ae3b04cfd3a29c

SHA256
01ba1fb41632594997a41d0c3a911ae5b3034d566ebb991ef76ad76e6f9e283a

SHA512
98bdb5c266222ccbd63b6f80c87e501c8033dc53b0513d300b8da50e39a207a0b69f8cd3ecc4a128dec340a1186779fedd1049c9b0a70e90d2cb3ae6ebfa4c4d

Download Submit
/usr/networks
Filesize
106KB

MD5
4dde761681684d7edad4e5e1ffdb940b

SHA1
2327be693bc11a618c380d7d3abc2382d870d48b

SHA256
d546509ab6670f9ff31783ed72875dfc0f37fa2b666bd5870eecaaed2ebea4a8

SHA512
91a61c719128f263f9f95736d55895954cc468c74ff469ee061d35ec382c50b9165e9a5427dc46a835dac6ae0e6e1f9819632475f68b98a907b53196bd4eb02a

Download Submit
memory/324-1-0x00400000-0x0049de24-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads