12013662c71da69de977c04cd7021f13a70cf7bed4ca6c82acbc100464d4b0ef

General

Target

mozimm.m
Size

300KB
MD5

eec5c6c219535fba3a0492ea8118b397
SHA1

292559e94f1c04b7d0c65d4a01bbbc5dc1ff6f21
SHA256

12013662c71da69de977c04cd7021f13a70cf7bed4ca6c82acbc100464d4b0ef
SHA512

3482c8324a18302f0f37b6e23ed85f24fff9f50bb568d8fd7461bf57f077a7c592f7a88bb2e1c398699958946d87bb93ab744d13a0003f9b879c15e6471f7400
SSDEEP

6144:T2s/gAWuboqsJ9xcJxspJBqQgTuaJZRhVabE5wKSDP99zBa77oNsKqqfPqOJ:T2s/bW+UmJqBxAuaPRhVabEDSDP99zBT

Score

9^/10

discovery persistence

Malware Config

Signatures

Contacts a large (26494) 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
Changes its process name 1 IoCs

Processes:

sh

description ioc pid process

Changes the process name, possibly in an attempt to hide itself dropbear 378 sh
Modifies Watchdog functionality 1 TTPs 2 IoCs
Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.

Impair Defenses
T1562

Processes:

description ioc

File opened for modification /dev/watchdog
File opened for modification /dev/misc/watchdog
Enumerates active TCP sockets 1 TTPs 1 IoCs
Gets active TCP sockets from /proc virtual filesystem.

System Network Connections Discovery
T1049

Processes:

mozimm.m

description ioc process

File opened for reading /proc/net/tcp mozimm.m
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

19821 ipinfo.io
19823 ipinfo.io

description	ioc	pid	process
Changes the process name, possibly in an attempt to hide itself	dropbear	378	sh

description	ioc
File opened for modification	/dev/watchdog
File opened for modification	/dev/misc/watchdog

description	ioc	process
File opened for reading	/proc/net/tcp	mozimm.m

flow	ioc
19821	ipinfo.io
19823	ipinfo.io

Modifies init.d 1 TTPs 4 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/console-setup.sh
File opened for modification	/etc/init.d/hwclock.sh
File opened for modification	/etc/init.d/keyboard-setup.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

File opened for reading /proc/net/route
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
Reads system network configuration 1 TTPs 3 IoCs
Uses contents of /proc filesystem to enumerate network settings.

System Network Configuration Discovery
T1016

Processes:

mozimm.m

description ioc process

File opened for reading /proc/net/tcp mozimm.m
File opened for reading /proc/net/raw mozimm.m
File opened for reading /proc/net/route
Reads runtime system information 2 IoCs
Reads data from /proc virtual filesystem.

Processes:

description ioc

File opened for reading /proc/stat
File opened for reading /proc/mounts
Writes file to tmp directory 2 IoCs
Malware often drops required files in the /tmp directory.

Processes:

mozimm.m

description ioc process

File opened for modification /tmp/.ips mozimm.m
File opened for modification /tmp/.config

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

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

description	ioc	process
File opened for reading	/proc/net/tcp	mozimm.m
File opened for reading	/proc/net/raw	mozimm.m
File opened for reading	/proc/net/route

description	ioc
File opened for reading	/proc/stat
File opened for reading	/proc/mounts

description	ioc	process
File opened for modification	/tmp/.ips	mozimm.m
File opened for modification	/tmp/.config

/tmp/mozimm.m
/tmp/mozimm.m
1⤵
- Enumerates active TCP sockets
- Reads system network configuration
- Writes file to tmp directory
PID:376

/bin/sh
/bin/sh -c "killall -9 telnetd utelnetd scfgmgr"
1⤵
PID:379

/bin/sh
/bin/sh -c "iptables -I INPUT -p tcp --destination-port 57795 -j ACCEPT"
1⤵
- Changes its process name
PID:393
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 57795 -j ACCEPT
  2⤵
  PID:394

/bin/sh
/bin/sh -c "iptables -I OUTPUT -p tcp --source-port 57795 -j ACCEPT"
1⤵
PID:401
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 57795 -j ACCEPT
  2⤵
  PID:402

/bin/sh
/bin/sh -c "iptables -I PREROUTING -t nat -p tcp --destination-port 57795 -j ACCEPT"
1⤵
PID:403
- /sbin/iptables
  iptables -I PREROUTING -t nat -p tcp --destination-port 57795 -j ACCEPT
  2⤵
  PID:404

/bin/sh
/bin/sh -c "iptables -I POSTROUTING -t nat -p tcp --source-port 57795 -j ACCEPT"
1⤵
PID:412
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p tcp --source-port 57795 -j ACCEPT
  2⤵
  PID:413

/bin/sh
/bin/sh -c "iptables -I INPUT -p tcp --dport 57795 -j ACCEPT"
1⤵
PID:414
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 57795 -j ACCEPT
  2⤵
  PID:415

/bin/sh
/bin/sh -c "iptables -I OUTPUT -p tcp --sport 57795 -j ACCEPT"
1⤵
PID:416
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 57795 -j ACCEPT
  2⤵
  PID:417

/bin/sh
/bin/sh -c "iptables -I PREROUTING -t nat -p tcp --dport 57795 -j ACCEPT"
1⤵
PID:418
- /sbin/iptables
  iptables -I PREROUTING -t nat -p tcp --dport 57795 -j ACCEPT
  2⤵
  PID:419

/bin/sh
/bin/sh -c "iptables -I INPUT -p tcp --destination-port 58000 -j DROP"
1⤵
PID:420
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 58000 -j DROP
  2⤵
  PID:421

/bin/sh
/bin/sh -c "iptables -I POSTROUTING -t nat -p tcp --sport 57795 -j ACCEPT"
1⤵
PID:422
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p tcp --sport 57795 -j ACCEPT
  2⤵
  PID:423

/bin/sh
/bin/sh -c "iptables -I OUTPUT -p tcp --source-port 58000 -j DROP"
1⤵
PID:424
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 58000 -j DROP
  2⤵
  PID:425

/bin/sh
/bin/sh -c "iptables -I INPUT -p tcp --dport 58000 -j DROP"
1⤵
PID:426
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 58000 -j DROP
  2⤵
  PID:427

/bin/sh
/bin/sh -c "iptables -I OUTPUT -p tcp --sport 58000 -j DROP"
1⤵
PID:428
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 58000 -j DROP
  2⤵
  PID:429

/bin/sh
/bin/sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer URL \"http://127.0.0.1\""
1⤵
PID:430

/bin/sh
/bin/sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer ConnectionRequestPassword \"acsMozi\""
1⤵
PID:431

/bin/sh
/bin/sh -c "iptables -I INPUT -p tcp --destination-port 35000 -j DROP"
1⤵
PID:432
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 35000 -j DROP
  2⤵
  PID:433

/bin/sh
/bin/sh -c "iptables -I INPUT -p tcp --destination-port 50023 -j DROP"
1⤵
PID:434
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 50023 -j DROP
  2⤵
  PID:435

/bin/sh
/bin/sh -c "iptables -I OUTPUT -p tcp --source-port 50023 -j DROP"
1⤵
PID:436
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 50023 -j DROP
  2⤵
  PID:437

/bin/sh
/bin/sh -c "iptables -I OUTPUT -p tcp --source-port 35000 -j DROP"
1⤵
PID:438
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 35000 -j DROP
  2⤵
  PID:439

/bin/sh
/bin/sh -c "iptables -I INPUT -p tcp --destination-port 7547 -j DROP"
1⤵
PID:440
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 7547 -j DROP
  2⤵
  PID:441

/bin/sh
/bin/sh -c "iptables -I OUTPUT -p tcp --source-port 7547 -j DROP"
1⤵
PID:442
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 7547 -j DROP
  2⤵
  PID:443

/bin/sh
/bin/sh -c "iptables -I INPUT -p tcp --dport 35000 -j DROP"
1⤵
PID:445
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 35000 -j DROP
  2⤵
  PID:447

/bin/sh
/bin/sh -c "iptables -I INPUT -p tcp --dport 50023 -j DROP"
1⤵
PID:448
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 50023 -j DROP
  2⤵
  PID:449

/bin/sh
/bin/sh -c "iptables -I OUTPUT -p tcp --sport 50023 -j DROP"
1⤵
PID:450
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 50023 -j DROP
  2⤵
  PID:451

/bin/sh
/bin/sh -c "iptables -I OUTPUT -p tcp --sport 35000 -j DROP"
1⤵
PID:455
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 35000 -j DROP
  2⤵
  PID:456

/bin/sh
/bin/sh -c "iptables -I INPUT -p tcp --dport 7547 -j DROP"
1⤵
PID:457
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 7547 -j DROP
  2⤵
  PID:458

/bin/sh
/bin/sh -c "iptables -I OUTPUT -p tcp --sport 7547 -j DROP"
1⤵
PID:459
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 7547 -j DROP
  2⤵
  PID:460

/bin/sh
/bin/sh -c "iptables -I INPUT -p udp --destination-port 8082 -j ACCEPT"
1⤵
PID:463
- /sbin/iptables
  iptables -I INPUT -p udp --destination-port 8082 -j ACCEPT
  2⤵
  PID:464

/bin/sh
/bin/sh -c "iptables -I OUTPUT -p udp --source-port 8082 -j ACCEPT"
1⤵
PID:465
- /sbin/iptables
  iptables -I OUTPUT -p udp --source-port 8082 -j ACCEPT
  2⤵
  PID:466

/bin/sh
/bin/sh -c "iptables -I PREROUTING -t nat -p udp --destination-port 8082 -j ACCEPT"
1⤵
PID:467
- /sbin/iptables
  iptables -I PREROUTING -t nat -p udp --destination-port 8082 -j ACCEPT
  2⤵
  PID:468

/bin/sh
/bin/sh -c "iptables -I POSTROUTING -t nat -p udp --source-port 8082 -j ACCEPT"
1⤵
PID:469
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p udp --source-port 8082 -j ACCEPT
  2⤵
  PID:471

/bin/sh
/bin/sh -c "iptables -I INPUT -p udp --dport 8082 -j ACCEPT"
1⤵
PID:473
- /sbin/iptables
  iptables -I INPUT -p udp --dport 8082 -j ACCEPT
  2⤵
  PID:474

/bin/sh
/bin/sh -c "iptables -I OUTPUT -p udp --sport 8082 -j ACCEPT"
1⤵
PID:475
- /sbin/iptables
  iptables -I OUTPUT -p udp --sport 8082 -j ACCEPT
  2⤵
  PID:476

/bin/sh
/bin/sh -c "iptables -I PREROUTING -t nat -p udp --dport 8082 -j ACCEPT"
1⤵
PID:477
- /sbin/iptables
  iptables -I PREROUTING -t nat -p udp --dport 8082 -j ACCEPT
  2⤵
  PID:478

/bin/sh
/bin/sh -c "iptables -I POSTROUTING -t nat -p udp --sport 8082 -j ACCEPT"
1⤵
PID:479
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p udp --sport 8082 -j ACCEPT
  2⤵
  PID:480

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

Exfiltration

Impact

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Downloads

/etc/rcS.d/S95baby.sh

Filesize
25B

MD5
1b3235ba10fc04836c941d3d27301956

SHA1
8909655763143702430b8c58b3ae3b04cfd3a29c

SHA256
01ba1fb41632594997a41d0c3a911ae5b3034d566ebb991ef76ad76e6f9e283a

SHA512
98bdb5c266222ccbd63b6f80c87e501c8033dc53b0513d300b8da50e39a207a0b69f8cd3ecc4a128dec340a1186779fedd1049c9b0a70e90d2cb3ae6ebfa4c4d

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/tmp/.config

Filesize
140B

MD5
457412db2275c971a2f32aef0c05f0ef

SHA1
81634d651b7bd25434966cb91dd5f1f1683ae363

SHA256
348a557ecef7585e315fa04bea4a179b715c795993ca331fbaf3677c79e0be5e

SHA512
4bf11f480c43a51666b8ddb335c59159c142299995ef5aad0cabe266e9652482f3032759150d6c467494ac10e7210976a935b61642cb214a438be016a7244a2c

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/usr/networks

Filesize
300KB

MD5
eec5c6c219535fba3a0492ea8118b397

SHA1
292559e94f1c04b7d0c65d4a01bbbc5dc1ff6f21

SHA256
12013662c71da69de977c04cd7021f13a70cf7bed4ca6c82acbc100464d4b0ef

SHA512
3482c8324a18302f0f37b6e23ed85f24fff9f50bb568d8fd7461bf57f077a7c592f7a88bb2e1c398699958946d87bb93ab744d13a0003f9b879c15e6471f7400

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads