f6c97b1e2ed02578ca1066c8235ba4f991e645f89012406c639dbccc6582eec8

General

Target

Mozi.7
Size

134KB
MD5

3849f30b51a5c49e8d1546960cc206c7
SHA1

61c74136534b826059c63221a2373dc0613a47b7
SHA256

f6c97b1e2ed02578ca1066c8235ba4f991e645f89012406c639dbccc6582eec8
SHA512

43d79293d1fbf716111c27e50df95a0860a0d706079625fa2b8a6b57c5ee06fa7b5b6b8c0acae33714a2181686426728513c990534e44b6f03a05dde0629ab86

Score

10^/10

discovery persistence suricata

Malware Config

Signatures

suricata: ET MALWARE Mirai Variant User-Agent (Outbound)
suricata: ET MALWARE Mirai Variant User-Agent (Outbound)
suricata
Contacts a large (8189) 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

/bin/watchdog /bin/watchdog
/sbin/watchdog /sbin/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:

Mozi.7

description ioc process

/proc/net/tcp /proc/net/tcp Mozi.7
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
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

4462 ipinfo.io
4464 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:

Mozi.7

description ioc process

/proc/net/tcp /proc/net/tcp Mozi.7
/proc/net/raw /proc/net/raw Mozi.7
/proc/net/route /proc/net/route
Reads runtime system information 2 IoCs
Reads data from /proc virtual filesystem.

Processes:

Mozi.7

description ioc

/proc/mounts /proc/mounts
/proc/self/exe /proc/self/exe Mozi.7
Writes file to tmp directory 1 IoCs
Malware often drops required files in the /tmp directory.

Processes:

description ioc

/tmp/Mozi.7 /tmp/Mozi.7

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

description	ioc
/etc/hosts	/etc/hosts

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

description	ioc	process
/proc/net/tcp	/proc/net/tcp	Mozi.7

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

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

flow	ioc
4462	ipinfo.io
4464	ipinfo.io

description	ioc	process
/proc/net/tcp	/proc/net/tcp	Mozi.7
/proc/net/raw	/proc/net/raw	Mozi.7
/proc/net/route	/proc/net/route

description	ioc
/proc/mounts	/proc/mounts
/proc/self/exe	/proc/self/exe	Mozi.7

description	ioc
/tmp/Mozi.7	/tmp/Mozi.7

./Mozi.7
./Mozi.7
1⤵
- Enumerates active TCP sockets
- Reads system network configuration
- Reads runtime system information
PID:328

/bin/sh
sh -c "killall -9 telnetd utelnetd scfgmgr"
1⤵
PID:331

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 37637 -j ACCEPT"
1⤵
PID:341
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 37637 -j ACCEPT
  2⤵
  PID:342

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 37637 -j ACCEPT"
1⤵
PID:347
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 37637 -j ACCEPT
  2⤵
  PID:348

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p tcp --destination-port 37637 -j ACCEPT"
1⤵
PID:349
- /sbin/iptables
  iptables -I PREROUTING -t nat -p tcp --destination-port 37637 -j ACCEPT
  2⤵
  PID:350

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --source-port 37637 -j ACCEPT"
1⤵
PID:357
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p tcp --source-port 37637 -j ACCEPT
  2⤵
  PID:358

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 37637 -j ACCEPT"
1⤵
PID:359
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 37637 -j ACCEPT
  2⤵
  PID:360

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 37637 -j ACCEPT"
1⤵
PID:361
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 37637 -j ACCEPT
  2⤵
  PID:362

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p tcp --dport 37637 -j ACCEPT"
1⤵
PID:363
- /sbin/iptables
  iptables -I PREROUTING -t nat -p tcp --dport 37637 -j ACCEPT
  2⤵
  PID:364

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --sport 37637 -j ACCEPT"
1⤵
PID:365
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p tcp --sport 37637 -j ACCEPT
  2⤵
  PID:366

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 22 -j DROP"
1⤵
PID:367
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 22 -j DROP
  2⤵
  PID:368

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 23 -j DROP"
1⤵
PID:369
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 23 -j DROP
  2⤵
  PID:370

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 2323 -j DROP"
1⤵
PID:371
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 2323 -j DROP
  2⤵
  PID:372

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 22 -j DROP"
1⤵
PID:373
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 22 -j DROP
  2⤵
  PID:374

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 23 -j DROP"
1⤵
PID:375
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 23 -j DROP
  2⤵
  PID:376

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 2323 -j DROP"
1⤵
PID:377
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 2323 -j DROP
  2⤵
  PID:378

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 22 -j DROP"
1⤵
PID:379
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 22 -j DROP
  2⤵
  PID:380

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 23 -j DROP"
1⤵
PID:381
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 23 -j DROP
  2⤵
  PID:382

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 2323 -j DROP"
1⤵
PID:383
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 2323 -j DROP
  2⤵
  PID:384

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 22 -j DROP"
1⤵
PID:385
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 22 -j DROP
  2⤵
  PID:386

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 23 -j DROP"
1⤵
PID:387
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 23 -j DROP
  2⤵
  PID:388

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 2323 -j DROP"
1⤵
PID:389
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 2323 -j DROP
  2⤵
  PID:390

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 58000 -j DROP"
1⤵
PID:391
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 58000 -j DROP
  2⤵
  PID:392

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 58000 -j DROP"
1⤵
PID:393
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 58000 -j DROP
  2⤵
  PID:394

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

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

/bin/sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer URL \"http://127.0.0.1\""
1⤵
PID:399

/bin/sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer ConnectionRequestPassword \"acsMozi\""
1⤵
PID:400

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 35000 -j DROP"
1⤵
PID:401
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 35000 -j DROP
  2⤵
  PID:402

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 50023 -j DROP"
1⤵
PID:403
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 50023 -j DROP
  2⤵
  PID:404

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 50023 -j DROP"
1⤵
PID:405
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 50023 -j DROP
  2⤵
  PID:406

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 35000 -j DROP"
1⤵
PID:407
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 35000 -j DROP
  2⤵
  PID:408

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 7547 -j DROP"
1⤵
PID:409
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 7547 -j DROP
  2⤵
  PID:410

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 7547 -j DROP"
1⤵
PID:411
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 7547 -j DROP
  2⤵
  PID:412

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 35000 -j DROP"
1⤵
PID:413
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 35000 -j DROP
  2⤵
  PID:414

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 50023 -j DROP"
1⤵
PID:415
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 50023 -j DROP
  2⤵
  PID:416

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 50023 -j DROP"
1⤵
PID:417
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 50023 -j DROP
  2⤵
  PID:418

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 35000 -j DROP"
1⤵
PID:419
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 35000 -j DROP
  2⤵
  PID:420

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 7547 -j DROP"
1⤵
PID:421
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 7547 -j DROP
  2⤵
  PID:422

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 7547 -j DROP"
1⤵
PID:423
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 7547 -j DROP
  2⤵
  PID:424

/bin/sh
sh -c "iptables -I INPUT -p udp --destination-port 8082 -j ACCEPT"
1⤵
PID:425
- /sbin/iptables
  iptables -I INPUT -p udp --destination-port 8082 -j ACCEPT
  2⤵
  PID:426

/bin/sh
sh -c "iptables -I OUTPUT -p udp --source-port 8082 -j ACCEPT"
1⤵
PID:427
- /sbin/iptables
  iptables -I OUTPUT -p udp --source-port 8082 -j ACCEPT
  2⤵
  PID:428

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p udp --destination-port 8082 -j ACCEPT"
1⤵
PID:429
- /sbin/iptables
  iptables -I PREROUTING -t nat -p udp --destination-port 8082 -j ACCEPT
  2⤵
  PID:430

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p udp --source-port 8082 -j ACCEPT"
1⤵
PID:431
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p udp --source-port 8082 -j ACCEPT
  2⤵
  PID:432

/bin/sh
sh -c "iptables -I INPUT -p udp --dport 8082 -j ACCEPT"
1⤵
PID:433
- /sbin/iptables
  iptables -I INPUT -p udp --dport 8082 -j ACCEPT
  2⤵
  PID:434

/bin/sh
sh -c "iptables -I OUTPUT -p udp --sport 8082 -j ACCEPT"
1⤵
PID:435
- /sbin/iptables
  iptables -I OUTPUT -p udp --sport 8082 -j ACCEPT
  2⤵
  PID:436

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p udp --dport 8082 -j ACCEPT"
1⤵
PID:437
- /sbin/iptables
  iptables -I PREROUTING -t nat -p udp --dport 8082 -j ACCEPT
  2⤵
  PID:438

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p udp --sport 8082 -j ACCEPT"
1⤵
PID:439
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p udp --sport 8082 -j ACCEPT
  2⤵
  PID:440