d546509ab6670f9ff31783ed72875dfc0f37fa2b666bd5870eecaaed2ebea4a8

General

Target

mozi.a
Size

106KB
MD5

4dde761681684d7edad4e5e1ffdb940b
SHA1

2327be693bc11a618c380d7d3abc2382d870d48b
SHA256

d546509ab6670f9ff31783ed72875dfc0f37fa2b666bd5870eecaaed2ebea4a8
SHA512

91a61c719128f263f9f95736d55895954cc468c74ff469ee061d35ec382c50b9165e9a5427dc46a835dac6ae0e6e1f9819632475f68b98a907b53196bd4eb02a
SSDEEP

1536:3aQiZDMyqIlMBZ/R0F4E4kcHiNq98wk9njKZjjLuYo68864sNHFEzv7Ld76divkE:KzDMyqIMBZ/R0ufhBmgZy9yNsNmPtcE

Score

9^/10

discovery persistence upx

Malware Config

Signatures

Contacts a large (4238) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

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.

resource	yara_rule
behavioral1/files/fstream-2.dat	patched_upx

Changes its process name 1 IoCs

description	ioc	pid
Changes the process name, possibly in an attempt to hide itself	sshd	736

Modifies Watchdog functionality 1 TTPs 2 IoCs

Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.

Impair Defenses

T1562

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

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/fstream-2.dat	upx

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

Network Service Discovery
T1046

Enumerates active TCP sockets 1 TTPs 1 IoCs

Gets active TCP sockets from /proc virtual filesystem.

System Network Connections Discovery

T1049

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

Modifies init.d 1 TTPs 4 IoCs

Adds/modifies system service, likely for persistence.

persistence

Boot or Logon Autostart Execution

T1547

description	ioc
File opened for modification	/etc/init.d/keyboard-setup.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/S95baby.sh

Writes file to system bin folder 1 TTPs 2 IoCs

Hijack Execution Flow

T1574

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

Reads system network configuration 1 TTPs 2 IoCs

Uses contents of /proc filesystem to enumerate network settings.

System Network Configuration Discovery

T1016

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

Writes file to tmp directory 1 IoCs

Malware often drops required files in the /tmp directory.

description	ioc
File opened for modification	/tmp/config

/tmp/mozi.a
/tmp/mozi.a
1⤵
PID:733

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 22 -j DROP"
1⤵
PID:742
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 22 -j DROP
  2⤵
  PID:743

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 23 -j DROP"
1⤵
PID:753
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 23 -j DROP
  2⤵
  PID:758

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 2323 -j DROP"
1⤵
PID:761
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 2323 -j DROP
  2⤵
  PID:762

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 22 -j DROP"
1⤵
PID:763
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 22 -j DROP
  2⤵
  PID:764

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 23 -j DROP"
1⤵
PID:766
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 23 -j DROP
  2⤵
  PID:768

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 2323 -j DROP"
1⤵
PID:769
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 2323 -j DROP
  2⤵
  PID:770

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 58000 -j DROP"
1⤵
PID:772
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 58000 -j DROP
  2⤵
  PID:774

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 58000 -j DROP"
1⤵
PID:776
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 58000 -j DROP
  2⤵
  PID:777

/bin/sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer URL \"http://127.0.0.1\""
1⤵
PID:778

/bin/sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer ConnectionRequestPassword \"acsMozi\""
1⤵
PID:780

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 35000 -j DROP"
1⤵
PID:781
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 35000 -j DROP
  2⤵
  PID:782

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 50023 -j DROP"
1⤵
PID:783
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 50023 -j DROP
  2⤵
  PID:784

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 50023 -j DROP"
1⤵
PID:786
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 50023 -j DROP
  2⤵
  PID:787

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 35000 -j DROP"
1⤵
PID:788
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 35000 -j DROP
  2⤵
  PID:789

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 7547 -j DROP"
1⤵
PID:790
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 7547 -j DROP
  2⤵
  PID:791

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 7547 -j DROP"
1⤵
PID:792
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 7547 -j DROP
  2⤵
  PID:793

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 40103 -j ACCEPT"
1⤵
PID:794
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 40103 -j ACCEPT
  2⤵
  PID:795

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 40103 -j ACCEPT"
1⤵
PID:796
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 40103 -j ACCEPT
  2⤵
  PID:797

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p tcp --destination-port 40103 -j ACCEPT"
1⤵
PID:798
- /sbin/iptables
  iptables -I PREROUTING -t nat -p tcp --destination-port 40103 -j ACCEPT
  2⤵
  PID:799

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --source-port 40103 -j ACCEPT"
1⤵
PID:807
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p tcp --source-port 40103 -j ACCEPT
  2⤵
  PID:809

/bin/sh
sh -c "iptables -I INPUT -p udp --destination-port 30282 -j ACCEPT"
1⤵
PID:885
- /sbin/iptables
  iptables -I INPUT -p udp --destination-port 30282 -j ACCEPT
  2⤵
  PID:886

/bin/sh
sh -c "iptables -I OUTPUT -p udp --source-port 30282 -j ACCEPT"
1⤵
PID:887
- /sbin/iptables
  iptables -I OUTPUT -p udp --source-port 30282 -j ACCEPT
  2⤵
  PID:888

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p udp --destination-port 30282 -j ACCEPT"
1⤵
PID:889
- /sbin/iptables
  iptables -I PREROUTING -t nat -p udp --destination-port 30282 -j ACCEPT
  2⤵
  PID:890

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p udp --source-port 30282 -j ACCEPT"
1⤵
PID:891
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p udp --source-port 30282 -j ACCEPT
  2⤵
  PID:892

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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 Discovery

2

T1046

System Network Configuration Discovery

1

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
109B

MD5
18a576e4660c72d5d445c3896744f390

SHA1
84eb9170a0350ab5e6bcab6a82c83576be39b821

SHA256
2ae465a253f97dafe16afe0c8086676c2948f95b3d03a62da288ba9c7264353a

SHA512
f4bcf08b3e5f942db835c9457c80a6d79bc66bc593abf8e07721b96a78a31040ac9bc7fe66649778175e8348ba1a35af3dfadabd901313f77c893f34631aa862

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/usr/networks

Filesize
106KB

MD5
4dde761681684d7edad4e5e1ffdb940b

SHA1
2327be693bc11a618c380d7d3abc2382d870d48b

SHA256
d546509ab6670f9ff31783ed72875dfc0f37fa2b666bd5870eecaaed2ebea4a8

SHA512
91a61c719128f263f9f95736d55895954cc468c74ff469ee061d35ec382c50b9165e9a5427dc46a835dac6ae0e6e1f9819632475f68b98a907b53196bd4eb02a

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads