b5cf68c7cb5bb2d21d60bf6654926f61566d95bfd7c9f9e182d032f1da5b4605

General

Target

ieobrbzij
Size

132KB
MD5

a73ddd6ec22462db955439f665cad4e6
SHA1

ac6962542a4b23ac13bddff22f8df9aeb702ef12
SHA256

b5cf68c7cb5bb2d21d60bf6654926f61566d95bfd7c9f9e182d032f1da5b4605
SHA512

92a52f68a7324c4d5876e1f7e2cb87d14b8604b057ceee2e537815568faa96abf576a22111c5c976eff72ab9015f1261b2331d4b4d711f4e62c8eb403c2377aa

Score

9^/10

discovery persistence

Malware Config

Signatures

Contacts a large (8522) amount of remote hosts 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:

ieobrbzij

description ioc process

/proc/net/tcp /proc/net/tcp ieobrbzij
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
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
Reads system network configuration 1 TTPs 3 IoCs
Uses contents of /proc filesystem to enumerate network settings.

System Network Configuration Discovery
T1016

Processes:

ieobrbzij

description ioc process

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

Processes:

ieobrbzij

description ioc process

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

Processes:

description ioc

/tmp/ieobrbzij /tmp/ieobrbzij

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	ieobrbzij

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

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

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

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

description	ioc
/tmp/ieobrbzij	/tmp/ieobrbzij

./ieobrbzij
./ieobrbzij
1⤵
- Enumerates active TCP sockets
- Reads system network configuration
- Reads runtime system information
PID:331

/bin/sh
sh -c "killall -9 telnetd utelnetd scfgmgr"
1⤵
PID:334

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 44475 -j ACCEPT"
1⤵
PID:345
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 44475 -j ACCEPT
  2⤵
  PID:346

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 44475 -j ACCEPT"
1⤵
PID:351
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 44475 -j ACCEPT
  2⤵
  PID:352

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p tcp --destination-port 44475 -j ACCEPT"
1⤵
PID:353
- /sbin/iptables
  iptables -I PREROUTING -t nat -p tcp --destination-port 44475 -j ACCEPT
  2⤵
  PID:354

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --source-port 44475 -j ACCEPT"
1⤵
PID:361
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p tcp --source-port 44475 -j ACCEPT
  2⤵
  PID:362

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 44475 -j ACCEPT"
1⤵
PID:363
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 44475 -j ACCEPT
  2⤵
  PID:364

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 44475 -j ACCEPT"
1⤵
PID:365
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 44475 -j ACCEPT
  2⤵
  PID:367

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 22 -j DROP"
1⤵
PID:366
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 22 -j DROP
  2⤵
  PID:368

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p tcp --dport 44475 -j ACCEPT"
1⤵
PID:369
- /sbin/iptables
  iptables -I PREROUTING -t nat -p tcp --dport 44475 -j ACCEPT
  2⤵
  PID:371

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 23 -j DROP"
1⤵
PID:370
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 23 -j DROP
  2⤵
  PID:372

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --sport 44475 -j ACCEPT"
1⤵
PID:373
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p tcp --sport 44475 -j ACCEPT
  2⤵
  PID:375

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 2323 -j DROP"
1⤵
PID:374
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 2323 -j DROP
  2⤵
  PID:376

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 22 -j DROP"
1⤵
PID:377
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 22 -j DROP
  2⤵
  PID:378

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 23 -j DROP"
1⤵
PID:379
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 23 -j DROP
  2⤵
  PID:380

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 2323 -j DROP"
1⤵
PID:381
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 2323 -j DROP
  2⤵
  PID:382

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 22 -j DROP"
1⤵
PID:383
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 22 -j DROP
  2⤵
  PID:384

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 23 -j DROP"
1⤵
PID:385
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 23 -j DROP
  2⤵
  PID:386

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 2323 -j DROP"
1⤵
PID:387
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 2323 -j DROP
  2⤵
  PID:388

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 22 -j DROP"
1⤵
PID:389
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 22 -j DROP
  2⤵
  PID:390

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 23 -j DROP"
1⤵
PID:391
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 23 -j DROP
  2⤵
  PID:392

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 2323 -j DROP"
1⤵
PID:393
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 2323 -j DROP
  2⤵
  PID:394

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 58000 -j DROP"
1⤵
PID:395
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 58000 -j DROP
  2⤵
  PID:396

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 58000 -j DROP"
1⤵
PID:397
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 58000 -j DROP
  2⤵
  PID:398

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 58000 -j DROP"
1⤵
PID:399
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 58000 -j DROP
  2⤵
  PID:400

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 58000 -j DROP"
1⤵
PID:401
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 58000 -j DROP
  2⤵
  PID:403

/bin/sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer URL \"http://127.0.0.1\""
1⤵
PID:404

/bin/sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer ConnectionRequestPassword \"acsMozi\""
1⤵
PID:405

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 35000 -j DROP"
1⤵
PID:406
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 35000 -j DROP
  2⤵
  PID:407

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 50023 -j DROP"
1⤵
PID:408
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 50023 -j DROP
  2⤵
  PID:409

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 50023 -j DROP"
1⤵
PID:410
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 50023 -j DROP
  2⤵
  PID:411

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 35000 -j DROP"
1⤵
PID:412
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 35000 -j DROP
  2⤵
  PID:413

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 7547 -j DROP"
1⤵
PID:414
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 7547 -j DROP
  2⤵
  PID:415

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 7547 -j DROP"
1⤵
PID:416
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 7547 -j DROP
  2⤵
  PID:417

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 35000 -j DROP"
1⤵
PID:418
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 35000 -j DROP
  2⤵
  PID:419

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 50023 -j DROP"
1⤵
PID:420
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 50023 -j DROP
  2⤵
  PID:421

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 50023 -j DROP"
1⤵
PID:423
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 50023 -j DROP
  2⤵
  PID:424

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 35000 -j DROP"
1⤵
PID:425
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 35000 -j DROP
  2⤵
  PID:426

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 7547 -j DROP"
1⤵
PID:427
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 7547 -j DROP
  2⤵
  PID:428

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 7547 -j DROP"
1⤵
PID:429
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 7547 -j DROP
  2⤵
  PID:430

/bin/sh
sh -c "iptables -I INPUT -p udp --destination-port 1434 -j ACCEPT"
1⤵
PID:452
- /sbin/iptables
  iptables -I INPUT -p udp --destination-port 1434 -j ACCEPT
  2⤵
  PID:453

/bin/sh
sh -c "iptables -I OUTPUT -p udp --source-port 1434 -j ACCEPT"
1⤵
PID:455
- /sbin/iptables
  iptables -I OUTPUT -p udp --source-port 1434 -j ACCEPT
  2⤵
  PID:456

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p udp --destination-port 1434 -j ACCEPT"
1⤵
PID:459
- /sbin/iptables
  iptables -I PREROUTING -t nat -p udp --destination-port 1434 -j ACCEPT
  2⤵
  PID:460

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p udp --source-port 1434 -j ACCEPT"
1⤵
PID:461
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p udp --source-port 1434 -j ACCEPT
  2⤵
  PID:462

/bin/sh
sh -c "iptables -I INPUT -p udp --dport 1434 -j ACCEPT"
1⤵
PID:464
- /sbin/iptables
  iptables -I INPUT -p udp --dport 1434 -j ACCEPT
  2⤵
  PID:465

/bin/sh
sh -c "iptables -I OUTPUT -p udp --sport 1434 -j ACCEPT"
1⤵
PID:466
- /sbin/iptables
  iptables -I OUTPUT -p udp --sport 1434 -j ACCEPT
  2⤵
  PID:467

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p udp --dport 1434 -j ACCEPT"
1⤵
PID:468
- /sbin/iptables
  iptables -I PREROUTING -t nat -p udp --dport 1434 -j ACCEPT
  2⤵
  PID:469

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p udp --sport 1434 -j ACCEPT"
1⤵
PID:470
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p udp --sport 1434 -j ACCEPT
  2⤵
  PID:472