798725bcb7292e8b41279521dde20eea17c119e8a37c39dea098091a210f611c

General

Target

idclnrfwk
Size

134KB
MD5

d253b6fc961673435c0e034675f43cf6
SHA1

0594b9aa72a54bbf69d99fee3d0ba75dd9f06e72
SHA256

798725bcb7292e8b41279521dde20eea17c119e8a37c39dea098091a210f611c
SHA512

6ad42f065811e4667246d97d64331528806f7ddf71be60606733e3fe6bffcab8aae4351cc4ebd08dbbf0d03cb90f3af91e20ab3cd94ebdb593915bf5693e83d3

Score

9^/10

discovery persistence

Malware Config

Signatures

Contacts a large (15964) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046
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

/sbin/watchdog /sbin/watchdog
/bin/watchdog /bin/watchdog
Modifies hosts file 1 IoCs
Adds to hosts file used for mapping hosts to IP addresses.

Processes:

description ioc

/etc/hosts /etc/hosts
Writes DNS configuration 1 TTPs 1 IoCs
Writes data to DNS resolver config file.

Dynamic Resolution
T1568

Processes:

description ioc

/etc/resolv.conf /etc/resolv.conf
Enumerates active TCP sockets 1 TTPs 1 IoCs
Gets active TCP sockets from /proc virtual filesystem.

System Network Connections Discovery
T1049

Processes:

idclnrfwk

description ioc process

/proc/net/tcp /proc/net/tcp idclnrfwk
Modifies init.d 1 TTPs 1 IoCs
Adds/modifies system service, likely for persistence.
persistence

Boot or Logon Autostart Execution
T1547

Processes:

description ioc

/etc/init.d/S95baby.sh /etc/init.d/S95baby.sh
Reads system routing table 1 TTPs 1 IoCs
Gets active network interfaces from /proc virtual filesystem.

System Network Configuration Discovery
T1016

Processes:

description ioc

/proc/net/route /proc/net/route
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

4569 ipinfo.io
4571 ipinfo.io
Reads system network configuration 1 TTPs 3 IoCs
Uses contents of /proc filesystem to enumerate network settings.

System Network Configuration Discovery
T1016

Processes:

idclnrfwk

description ioc process

/proc/net/tcp /proc/net/tcp idclnrfwk
/proc/net/raw /proc/net/raw idclnrfwk
/proc/net/route /proc/net/route
Reads runtime system information 2 IoCs
Reads data from /proc virtual filesystem.

Processes:

idclnrfwk

description ioc process

/proc/self/exe /proc/self/exe idclnrfwk
/proc/mounts /proc/mounts
Writes file to tmp directory 1 IoCs
Malware often drops required files in the /tmp directory.

Processes:

description ioc

/tmp/idclnrfwk /tmp/idclnrfwk

description	ioc
/sbin/watchdog	/sbin/watchdog
/bin/watchdog	/bin/watchdog

description	ioc
/etc/hosts	/etc/hosts

description	ioc
/etc/resolv.conf	/etc/resolv.conf

description	ioc	process
/proc/net/tcp	/proc/net/tcp	idclnrfwk

description	ioc
/etc/init.d/S95baby.sh	/etc/init.d/S95baby.sh

description	ioc
/proc/net/route	/proc/net/route

flow	ioc
4569	ipinfo.io
4571	ipinfo.io

description	ioc	process
/proc/net/tcp	/proc/net/tcp	idclnrfwk
/proc/net/raw	/proc/net/raw	idclnrfwk
/proc/net/route	/proc/net/route

description	ioc	process
/proc/self/exe	/proc/self/exe	idclnrfwk
/proc/mounts	/proc/mounts

description	ioc
/tmp/idclnrfwk	/tmp/idclnrfwk

./idclnrfwk
./idclnrfwk
1⤵
- Enumerates active TCP sockets
- Reads system network configuration
- Reads runtime system information
PID:323

/bin/sh
sh -c "killall -9 telnetd utelnetd scfgmgr"
1⤵
PID:326

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 42913 -j ACCEPT"
1⤵
PID:337

/sbin/iptables
iptables -I INPUT -p tcp --destination-port 42913 -j ACCEPT
2⤵
PID:338

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 42913 -j ACCEPT"
1⤵
PID:343

/sbin/iptables
iptables -I OUTPUT -p tcp --source-port 42913 -j ACCEPT
2⤵
PID:344

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p tcp --destination-port 42913 -j ACCEPT"
1⤵
PID:345

/sbin/iptables
iptables -I PREROUTING -t nat -p tcp --destination-port 42913 -j ACCEPT
2⤵
PID:346

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --source-port 42913 -j ACCEPT"
1⤵
PID:354

/sbin/iptables
iptables -I POSTROUTING -t nat -p tcp --source-port 42913 -j ACCEPT
2⤵
PID:355

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 42913 -j ACCEPT"
1⤵
PID:356

/sbin/iptables
iptables -I INPUT -p tcp --dport 42913 -j ACCEPT
2⤵
PID:357

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 42913 -j ACCEPT"
1⤵
PID:358

/sbin/iptables
iptables -I OUTPUT -p tcp --sport 42913 -j ACCEPT
2⤵
PID:359

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p tcp --dport 42913 -j ACCEPT"
1⤵
PID:360

/sbin/iptables
iptables -I PREROUTING -t nat -p tcp --dport 42913 -j ACCEPT
2⤵
PID:361

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 22 -j DROP"
1⤵
PID:362

/sbin/iptables
iptables -I INPUT -p tcp --destination-port 22 -j DROP
2⤵
PID:364

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --sport 42913 -j ACCEPT"
1⤵
PID:363

/sbin/iptables
iptables -I POSTROUTING -t nat -p tcp --sport 42913 -j ACCEPT
2⤵
PID:365

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 23 -j DROP"
1⤵
PID:366

/sbin/iptables
iptables -I INPUT -p tcp --destination-port 23 -j DROP
2⤵
PID:367

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 2323 -j DROP"
1⤵
PID:368

/sbin/iptables
iptables -I INPUT -p tcp --destination-port 2323 -j DROP
2⤵
PID:369

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 22 -j DROP"
1⤵
PID:370

/sbin/iptables
iptables -I OUTPUT -p tcp --source-port 22 -j DROP
2⤵
PID:371

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 23 -j DROP"
1⤵
PID:372

/sbin/iptables
iptables -I OUTPUT -p tcp --source-port 23 -j DROP
2⤵
PID:373

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 2323 -j DROP"
1⤵
PID:374

/sbin/iptables
iptables -I OUTPUT -p tcp --source-port 2323 -j DROP
2⤵
PID:375

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 22 -j DROP"
1⤵
PID:376

/sbin/iptables
iptables -I INPUT -p tcp --dport 22 -j DROP
2⤵
PID:377

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 23 -j DROP"
1⤵
PID:378

/sbin/iptables
iptables -I INPUT -p tcp --dport 23 -j DROP
2⤵
PID:379

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 2323 -j DROP"
1⤵
PID:380

/sbin/iptables
iptables -I INPUT -p tcp --dport 2323 -j DROP
2⤵
PID:381

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 22 -j DROP"
1⤵
PID:382

/sbin/iptables
iptables -I OUTPUT -p tcp --sport 22 -j DROP
2⤵
PID:383

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 23 -j DROP"
1⤵
PID:384

/sbin/iptables
iptables -I OUTPUT -p tcp --sport 23 -j DROP
2⤵
PID:385

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 2323 -j DROP"
1⤵
PID:386

/sbin/iptables
iptables -I OUTPUT -p tcp --sport 2323 -j DROP
2⤵
PID:387

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 58000 -j DROP"
1⤵
PID:388

/sbin/iptables
iptables -I INPUT -p tcp --destination-port 58000 -j DROP
2⤵
PID:389

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 58000 -j DROP"
1⤵
PID:390

/sbin/iptables
iptables -I OUTPUT -p tcp --source-port 58000 -j DROP
2⤵
PID:391

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 58000 -j DROP"
1⤵
PID:392

/sbin/iptables
iptables -I INPUT -p tcp --dport 58000 -j DROP
2⤵
PID:393

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 58000 -j DROP"
1⤵
PID:394

/sbin/iptables
iptables -I OUTPUT -p tcp --sport 58000 -j DROP
2⤵
PID:395

/bin/sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer URL \"http://127.0.0.1\""
1⤵
PID:396

/bin/sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer ConnectionRequestPassword \"acsMozi\""
1⤵
PID:397

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 35000 -j DROP"
1⤵
PID:398

/sbin/iptables
iptables -I INPUT -p tcp --destination-port 35000 -j DROP
2⤵
PID:399

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 50023 -j DROP"
1⤵
PID:400

/sbin/iptables
iptables -I INPUT -p tcp --destination-port 50023 -j DROP
2⤵
PID:401

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 50023 -j DROP"
1⤵
PID:402

/sbin/iptables
iptables -I OUTPUT -p tcp --source-port 50023 -j DROP
2⤵
PID:403

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 35000 -j DROP"
1⤵
PID:404

/sbin/iptables
iptables -I OUTPUT -p tcp --source-port 35000 -j DROP
2⤵
PID:405

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 7547 -j DROP"
1⤵
PID:406

/sbin/iptables
iptables -I INPUT -p tcp --destination-port 7547 -j DROP
2⤵
PID:407

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 7547 -j DROP"
1⤵
PID:408

/sbin/iptables
iptables -I OUTPUT -p tcp --source-port 7547 -j DROP
2⤵
PID:409

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 35000 -j DROP"
1⤵
PID:410

/sbin/iptables
iptables -I INPUT -p tcp --dport 35000 -j DROP
2⤵
PID:411

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 50023 -j DROP"
1⤵
PID:412

/sbin/iptables
iptables -I INPUT -p tcp --dport 50023 -j DROP
2⤵
PID:413

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 50023 -j DROP"
1⤵
PID:414

/sbin/iptables
iptables -I OUTPUT -p tcp --sport 50023 -j DROP
2⤵
PID:415

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 35000 -j DROP"
1⤵
PID:416

/sbin/iptables
iptables -I OUTPUT -p tcp --sport 35000 -j DROP
2⤵
PID:417

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 7547 -j DROP"
1⤵
PID:418

/sbin/iptables
iptables -I INPUT -p tcp --dport 7547 -j DROP
2⤵
PID:419

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 7547 -j DROP"
1⤵
PID:420

/sbin/iptables
iptables -I OUTPUT -p tcp --sport 7547 -j DROP
2⤵
PID:421

/bin/sh
sh -c "iptables -I INPUT -p udp --destination-port 8082 -j ACCEPT"
1⤵
PID:422

/sbin/iptables
iptables -I INPUT -p udp --destination-port 8082 -j ACCEPT
2⤵
PID:423

/bin/sh
sh -c "iptables -I OUTPUT -p udp --source-port 8082 -j ACCEPT"
1⤵
PID:424

/sbin/iptables
iptables -I OUTPUT -p udp --source-port 8082 -j ACCEPT
2⤵
PID:425

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p udp --destination-port 8082 -j ACCEPT"
1⤵
PID:426

/sbin/iptables
iptables -I PREROUTING -t nat -p udp --destination-port 8082 -j ACCEPT
2⤵
PID:427

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p udp --source-port 8082 -j ACCEPT"
1⤵
PID:428

/sbin/iptables
iptables -I POSTROUTING -t nat -p udp --source-port 8082 -j ACCEPT
2⤵
PID:429

/bin/sh
sh -c "iptables -I INPUT -p udp --dport 8082 -j ACCEPT"
1⤵
PID:430

/sbin/iptables
iptables -I INPUT -p udp --dport 8082 -j ACCEPT
2⤵
PID:431

/bin/sh
sh -c "iptables -I OUTPUT -p udp --sport 8082 -j ACCEPT"
1⤵
PID:432

/sbin/iptables
iptables -I OUTPUT -p udp --sport 8082 -j ACCEPT
2⤵
PID:433

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p udp --dport 8082 -j ACCEPT"
1⤵
PID:434

/sbin/iptables
iptables -I PREROUTING -t nat -p udp --dport 8082 -j ACCEPT
2⤵
PID:435

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p udp --sport 8082 -j ACCEPT"
1⤵
PID:436

/sbin/iptables
iptables -I POSTROUTING -t nat -p udp --sport 8082 -j ACCEPT
2⤵
PID:437

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Hijack Execution Flow

1

T1574

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Hijack Execution Flow

1

T1574

Defense Evasion

Hijack Execution Flow

Impair Defenses

Credential Access

Discovery

Network Service Scanning

2

T1046

System Network Configuration Discovery

2

T1016

System Network Connections Discovery

1

T1049

Lateral Movement

Collection

Command and Control

Dynamic Resolution

1

T1568

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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