b5cf68c7cb5bb2d21d60bf6654926f61566d95bfd7c9f9e182d032f1da5b4605

General

Target

bin.sh
Size

132KB
MD5

a73ddd6ec22462db955439f665cad4e6
SHA1

ac6962542a4b23ac13bddff22f8df9aeb702ef12
SHA256

b5cf68c7cb5bb2d21d60bf6654926f61566d95bfd7c9f9e182d032f1da5b4605
SHA512

92a52f68a7324c4d5876e1f7e2cb87d14b8604b057ceee2e537815568faa96abf576a22111c5c976eff72ab9015f1261b2331d4b4d711f4e62c8eb403c2377aa
SSDEEP

3072:2glZ3FtCKXhkmHtZ9TEKzjfj/WMngyIfsJ0F7xPtoM:2IIKXhZtL7jOTyIG87Xl

Score

9^/10

discovery persistence upx

Malware Config

Signatures

Contacts a large (8509) 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.

Processes:

resource yara_rule

/usr/networks patched_upx
Changes its process name 1 IoCs

Processes:

description ioc pid

Changes the process name, possibly in an attempt to hide itself sshd 698
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
UPX packed file 1 IoCs
Detects executables packed with UPX/modified UPX open source packer.
upx

Processes:

resource yara_rule

/usr/networks 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

Processes:

bin.sh

description ioc process

File opened for reading /proc/net/tcp bin.sh
Enumerates running processes
Discovers information about currently running processes on the system

resource	yara_rule
/usr/networks	patched_upx

description	ioc	pid
Changes the process name, possibly in an attempt to hide itself	sshd	698

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

resource	yara_rule
/usr/networks	upx

description	ioc	process
File opened for reading	/proc/net/tcp	bin.sh

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/keyboard-setup.sh
File opened for modification	/etc/init.d/console-setup.sh
File opened for modification	/etc/init.d/hwclock.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:

bin.sh

description ioc process

File opened for reading /proc/net/raw bin.sh
File opened for reading /proc/net/route
File opened for reading /proc/net/tcp bin.sh

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/raw	bin.sh
File opened for reading	/proc/net/route
File opened for reading	/proc/net/tcp	bin.sh

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

Processes:

killallbin.sh

description	ioc	process
File opened for reading	/proc/15/stat	killall
File opened for reading	/proc/37/stat	killall
File opened for reading	/proc/69/stat	killall
File opened for reading	/proc/334/stat	killall
File opened for reading	/proc/695/stat	killall
File opened for reading	/proc/7/stat	killall
File opened for reading	/proc/10/stat	killall
File opened for reading	/proc/11/stat	killall
File opened for reading	/proc/18/stat	killall
File opened for reading	/proc/141/cmdline	killall
File opened for reading	/proc/689/stat	killall
File opened for reading	/proc/76/stat	killall
File opened for reading	/proc/388/stat	killall
File opened for reading	/proc/547/stat	killall
File opened for reading	/proc/4/stat	killall
File opened for reading	/proc/12/stat	killall
File opened for reading	/proc/116/stat	killall
File opened for reading	/proc/330/stat	killall
File opened for reading	/proc/335/stat	killall
File opened for reading	/proc/385/stat	killall
File opened for reading	/proc/699/stat	killall
File opened for reading	/proc/1/stat	killall
File opened for reading	/proc/363/stat	killall
File opened for reading	/proc/self/exe	bin.sh
File opened for reading	/proc/5/stat	killall
File opened for reading	/proc/mounts
File opened for reading	/proc/6/stat	killall
File opened for reading	/proc/22/stat	killall
File opened for reading	/proc/2/stat	killall
File opened for reading	/proc/3/stat	killall
File opened for reading	/proc/375/stat	killall
File opened for reading	/proc/511/stat	killall
File opened for reading	/proc/691/stat	killall
File opened for reading	/proc/9/stat	killall
File opened for reading	/proc/74/stat	killall
File opened for reading	/proc/78/stat	killall
File opened for reading	/proc/79/stat	killall
File opened for reading	/proc/82/stat	killall
File opened for reading	/proc/filesystems	killall
File opened for reading	/proc/674/stat	killall
File opened for reading	/proc/690/stat	killall
File opened for reading	/proc/13/stat	killall
File opened for reading	/proc/19/stat	killall
File opened for reading	/proc/498/stat	killall
File opened for reading	/proc/36/stat	killall
File opened for reading	/proc/72/stat	killall
File opened for reading	/proc/690/cmdline	killall
File opened for reading	/proc/14/stat	killall
File opened for reading	/proc/17/stat	killall
File opened for reading	/proc/73/stat	killall
File opened for reading	/proc/116/cmdline	killall
File opened for reading	/proc/241/stat	killall
File opened for reading	/proc/546/stat	killall
File opened for reading	/proc/20/stat	killall
File opened for reading	/proc/21/stat	killall
File opened for reading	/proc/24/stat	killall
File opened for reading	/proc/166/stat	killall
File opened for reading	/proc/692/stat	killall
File opened for reading	/proc/702/stat	killall
File opened for reading	/proc/8/stat	killall
File opened for reading	/proc/16/stat	killall
File opened for reading	/proc/71/stat	killall
File opened for reading	/proc/115/stat	killall
File opened for reading	/proc/141/stat	killall

Writes file to tmp directory 2 IoCs
Malware often drops required files in the /tmp directory.

Processes:

bin.sh

description ioc process

File opened for modification /tmp/.ips bin.sh
File opened for modification /tmp/.config

description	ioc	process
File opened for modification	/tmp/.ips	bin.sh
File opened for modification	/tmp/.config

/tmp/bin.sh
/tmp/bin.sh
1⤵
- Enumerates active TCP sockets
- Reads system network configuration
- Reads runtime system information
- Writes file to tmp directory
PID:696

/bin/sh
sh -c "killall -9 telnetd utelnetd scfgmgr"
1⤵
PID:699
- /usr/bin/killall
  killall -9 telnetd utelnetd scfgmgr
  2⤵
  - Reads runtime system information
  PID:701

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 43555 -j ACCEPT"
1⤵
PID:812
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 43555 -j ACCEPT
  2⤵
  PID:814

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 22 -j DROP"
1⤵
PID:813
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 22 -j DROP
  2⤵
  PID:815

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 43555 -j ACCEPT"
1⤵
PID:820
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 43555 -j ACCEPT
  2⤵
  PID:821

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p tcp --destination-port 43555 -j ACCEPT"
1⤵
PID:822
- /sbin/iptables
  iptables -I PREROUTING -t nat -p tcp --destination-port 43555 -j ACCEPT
  2⤵
  PID:824

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 23 -j DROP"
1⤵
PID:823
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 23 -j DROP
  2⤵
  PID:825

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --source-port 43555 -j ACCEPT"
1⤵
PID:831
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p tcp --source-port 43555 -j ACCEPT
  2⤵
  PID:832

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 43555 -j ACCEPT"
1⤵
PID:833
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 43555 -j ACCEPT
  2⤵
  PID:835

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 2323 -j DROP"
1⤵
PID:834
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 2323 -j DROP
  2⤵
  PID:836

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 43555 -j ACCEPT"
1⤵
PID:837
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 43555 -j ACCEPT
  2⤵
  PID:839

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 22 -j DROP"
1⤵
PID:838
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 22 -j DROP
  2⤵
  PID:840

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p tcp --dport 43555 -j ACCEPT"
1⤵
PID:841
- /sbin/iptables
  iptables -I PREROUTING -t nat -p tcp --dport 43555 -j ACCEPT
  2⤵
  PID:843

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 23 -j DROP"
1⤵
PID:842
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 23 -j DROP
  2⤵
  PID:844

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --sport 43555 -j ACCEPT"
1⤵
PID:845
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p tcp --sport 43555 -j ACCEPT
  2⤵
  PID:847

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 2323 -j DROP"
1⤵
PID:846
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 2323 -j DROP
  2⤵
  PID:848

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 22 -j DROP"
1⤵
PID:849
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 22 -j DROP
  2⤵
  PID:850

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 23 -j DROP"
1⤵
PID:851
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 23 -j DROP
  2⤵
  PID:852

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 2323 -j DROP"
1⤵
PID:853
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 2323 -j DROP
  2⤵
  PID:854

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 22 -j DROP"
1⤵
PID:855
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 22 -j DROP
  2⤵
  PID:856

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 23 -j DROP"
1⤵
PID:857
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 23 -j DROP
  2⤵
  PID:858

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 2323 -j DROP"
1⤵
PID:859
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 2323 -j DROP
  2⤵
  PID:860

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 58000 -j DROP"
1⤵
PID:861
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 58000 -j DROP
  2⤵
  PID:862

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 58000 -j DROP"
1⤵
PID:863
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 58000 -j DROP
  2⤵
  PID:864

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 58000 -j DROP"
1⤵
PID:865
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 58000 -j DROP
  2⤵
  PID:866

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 58000 -j DROP"
1⤵
PID:867
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 58000 -j DROP
  2⤵
  PID:868

/bin/sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer URL \"http://127.0.0.1\""
1⤵
PID:869

/bin/sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer ConnectionRequestPassword \"acsMozi\""
1⤵
PID:870

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 35000 -j DROP"
1⤵
PID:871
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 35000 -j DROP
  2⤵
  PID:872

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 50023 -j DROP"
1⤵
PID:873
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 50023 -j DROP
  2⤵
  PID:874

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 50023 -j DROP"
1⤵
PID:875
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 50023 -j DROP
  2⤵
  PID:876

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 35000 -j DROP"
1⤵
PID:877
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 35000 -j DROP
  2⤵
  PID:878

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 7547 -j DROP"
1⤵
PID:879
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 7547 -j DROP
  2⤵
  PID:880

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 7547 -j DROP"
1⤵
PID:881
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 7547 -j DROP
  2⤵
  PID:882

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 35000 -j DROP"
1⤵
PID:883
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 35000 -j DROP
  2⤵
  PID:884

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 50023 -j DROP"
1⤵
PID:885
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 50023 -j DROP
  2⤵
  PID:886

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 50023 -j DROP"
1⤵
PID:887
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 50023 -j DROP
  2⤵
  PID:889

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 35000 -j DROP"
1⤵
PID:890
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 35000 -j DROP
  2⤵
  PID:891

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 7547 -j DROP"
1⤵
PID:892
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 7547 -j DROP
  2⤵
  PID:893

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 7547 -j DROP"
1⤵
PID:894
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 7547 -j DROP
  2⤵
  PID:895

/bin/sh
sh -c "iptables -I INPUT -p udp --destination-port 8000 -j ACCEPT"
1⤵
PID:896
- /sbin/iptables
  iptables -I INPUT -p udp --destination-port 8000 -j ACCEPT
  2⤵
  PID:897

/bin/sh
sh -c "iptables -I OUTPUT -p udp --source-port 8000 -j ACCEPT"
1⤵
PID:898
- /sbin/iptables
  iptables -I OUTPUT -p udp --source-port 8000 -j ACCEPT
  2⤵
  PID:899

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p udp --destination-port 8000 -j ACCEPT"
1⤵
PID:900
- /sbin/iptables
  iptables -I PREROUTING -t nat -p udp --destination-port 8000 -j ACCEPT
  2⤵
  PID:901

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p udp --source-port 8000 -j ACCEPT"
1⤵
PID:902
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p udp --source-port 8000 -j ACCEPT
  2⤵
  PID:903

/bin/sh
sh -c "iptables -I INPUT -p udp --dport 8000 -j ACCEPT"
1⤵
PID:904
- /sbin/iptables
  iptables -I INPUT -p udp --dport 8000 -j ACCEPT
  2⤵
  PID:905

/bin/sh
sh -c "iptables -I OUTPUT -p udp --sport 8000 -j ACCEPT"
1⤵
PID:906
- /sbin/iptables
  iptables -I OUTPUT -p udp --sport 8000 -j ACCEPT
  2⤵
  PID:907

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p udp --dport 8000 -j ACCEPT"
1⤵
PID:908
- /sbin/iptables
  iptables -I PREROUTING -t nat -p udp --dport 8000 -j ACCEPT
  2⤵
  PID:909

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p udp --sport 8000 -j ACCEPT"
1⤵
PID:910
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p udp --sport 8000 -j ACCEPT
  2⤵
  PID:911

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

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
147B

MD5
b8a8f466da2abb274b5da8a184d10172

SHA1
2444c38c3462702bf815cf4e37100214824b76e6

SHA256
74c9b3a712c3e883f3d0181d64bb83d4aa02f1619615f4f584441e4ae4de0936

SHA512
33dfaaae402915c324acb901a94deac1c6f4b2773bdd9fc5e61fed5fd848570a699abcf3f178f8c2b2bdf527dd10a40edaefbe43b94f6e2f1d8e69ebd681768f

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/usr/networks

Filesize
132KB

MD5
a73ddd6ec22462db955439f665cad4e6

SHA1
ac6962542a4b23ac13bddff22f8df9aeb702ef12

SHA256
b5cf68c7cb5bb2d21d60bf6654926f61566d95bfd7c9f9e182d032f1da5b4605

SHA512
92a52f68a7324c4d5876e1f7e2cb87d14b8604b057ceee2e537815568faa96abf576a22111c5c976eff72ab9015f1261b2331d4b4d711f4e62c8eb403c2377aa

Download Submit
memory/696-1-0x00400000-0x004c1f18-memory.dmp

Download
memory/880-2-0x77acc000-0x77add0d0-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads