4293c1d8574dc87c58360d6bac3daa182f64f7785c9d41da5e0741d2b1817fc7

Resubmissions

26-08-2024 15:34

240826-sztdka1emb 8

26-08-2024 15:33

240826-sza7zsseqp 8

26-08-2024 15:32

240826-syxdtssepn 8

Analysis

max time kernel
21s
max time network
22s
platform
debian-9_mips
resource
debian9-mipsbe-20240418-en
resource tags

arch:mipsimage:debian9-mipsbe-20240418-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipssystem
submitted
26-08-2024 15:32

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General

Target

bin.sh
Size

132KB
MD5

59ce0baba11893f90527fc951ac69912
SHA1

5857a7dd621c4c3ebb0b5a3bec915d409f70d39f
SHA256

4293c1d8574dc87c58360d6bac3daa182f64f7785c9d41da5e0741d2b1817fc7
SHA512

c5b12797b477e5e5964a78766bb40b1c0d9fdfb8eef1f9aee3df451e3441a40c61d325bf400ba51048811b68e1c70a95f15e4166b7a65a4eca0c624864328647
SSDEEP

3072:phNlHuBafLeBtfCzpta8xlBIOdVo3/4sxLJ10xioP:p3lOYoaja8xzx/0wsxzSi2

Score

8^/10

discovery

Malware Config

Signatures

Contacts a large (988) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

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	Process
File opened for modification	/dev/watchdog	bin.sh
File opened for modification	/dev/misc/watchdog	bin.sh

Enumerates active TCP sockets 1 TTPs 1 IoCs

Gets active TCP sockets from /proc virtual filesystem.

System Network Connections Discovery

T1049

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

Enumerates running processes
Discovers information about currently running processes on the system

Reads system routing table 1 TTPs 1 IoCs

Gets active network interfaces from /proc virtual filesystem.

System Network Configuration Discovery

T1016

description	ioc	Process
File opened for reading	/proc/net/route	bin.sh

Writes file to system bin folder 1 TTPs 2 IoCs

Hijack Execution Flow

T1574

description	ioc	Process
File opened for modification	/bin/watchdog	bin.sh
File opened for modification	/sbin/watchdog	bin.sh

Changes its process name 1 IoCs

description	ioc	pid
Changes the process name, possibly in an attempt to hide itself	sshd	730

Reads system network configuration 1 TTPs 3 IoCs

Uses contents of /proc filesystem to enumerate network settings.

System Network Configuration Discovery

T1016

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

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

description	ioc	Process
File opened for reading	/proc/36/stat	killall
File opened for reading	/proc/67/stat	killall
File opened for reading	/proc/69/stat	killall
File opened for reading	/proc/359/stat	killall
File opened for reading	/proc/665/stat	killall
File opened for reading	/proc/719/cmdline	killall
File opened for reading	/proc/10/stat	killall
File opened for reading	/proc/18/stat	killall
File opened for reading	/proc/320/stat	killall
File opened for reading	/proc/420/stat	killall
File opened for reading	/proc/731/stat	killall
File opened for reading	/proc/6/stat	killall
File opened for reading	/proc/75/stat	killall
File opened for reading	/proc/115/cmdline	killall
File opened for reading	/proc/326/stat	killall
File opened for reading	/proc/719/stat	killall
File opened for reading	/proc/726/stat	killall
File opened for reading	/proc/144/cmdline	killall
File opened for reading	/proc/164/stat	killall
File opened for reading	/proc/2/stat	killall
File opened for reading	/proc/9/stat	killall
File opened for reading	/proc/13/stat	killall
File opened for reading	/proc/14/stat	killall
File opened for reading	/proc/71/stat	killall
File opened for reading	/proc/104/stat	killall
File opened for reading	/proc/371/stat	killall
File opened for reading	/proc/725/stat	killall
File opened for reading	/proc/733/stat	killall
File opened for reading	/proc/self/exe	bin.sh
File opened for reading	/proc/37/stat	killall
File opened for reading	/proc/68/stat	killall
File opened for reading	/proc/144/stat	killall
File opened for reading	/proc/1/stat	killall
File opened for reading	/proc/7/stat	killall
File opened for reading	/proc/20/stat	killall
File opened for reading	/proc/74/stat	killall
File opened for reading	/proc/327/stat	killall
File opened for reading	/proc/16/stat	killall
File opened for reading	/proc/22/stat	killall
File opened for reading	/proc/19/stat	killall
File opened for reading	/proc/379/stat	killall
File opened for reading	/proc/709/stat	killall
File opened for reading	/proc/8/stat	killall
File opened for reading	/proc/15/stat	killall
File opened for reading	/proc/23/stat	killall
File opened for reading	/proc/24/stat	killall
File opened for reading	/proc/5/stat	killall
File opened for reading	/proc/21/stat	killall
File opened for reading	/proc/115/stat	killall
File opened for reading	/proc/221/stat	killall
File opened for reading	/proc/720/stat	killall
File opened for reading	/proc/734/stat	killall
File opened for reading	/proc/11/stat	killall
File opened for reading	/proc/660/stat	killall
File opened for reading	/proc/663/stat	killall
File opened for reading	/proc/4/stat	killall
File opened for reading	/proc/17/stat	killall
File opened for reading	/proc/72/stat	killall
File opened for reading	/proc/720/cmdline	killall
File opened for reading	/proc/filesystems	killall
File opened for reading	/proc/12/stat	killall
File opened for reading	/proc/149/stat	killall
File opened for reading	/proc/373/stat	killall
File opened for reading	/proc/730/stat	killall

Writes file to tmp directory 1 IoCs

Malware often drops required files in the /tmp directory.

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

/tmp/bin.sh
/tmp/bin.sh
1⤵
- Modifies Watchdog functionality
- Enumerates active TCP sockets
- Reads system routing table
- Writes file to system bin folder
- Reads system network configuration
- Reads runtime system information
- Writes file to tmp directory
PID:727
- /bin/sh
  sh -c "killall -9 telnetd utelnetd scfgmgr"
  2⤵
  PID:731
- - /usr/bin/killall
    killall -9 telnetd utelnetd scfgmgr
    3⤵
    - Reads runtime system information
    PID:732
- /bin/sh
  sh -c "iptables -I INPUT -p tcp --destination-port 39335 -j ACCEPT"
  2⤵
  PID:839
- - /sbin/iptables
    iptables -I INPUT -p tcp --destination-port 39335 -j ACCEPT
    3⤵
    PID:840
- /bin/sh
  sh -c "iptables -I OUTPUT -p tcp --source-port 39335 -j ACCEPT"
  2⤵
  PID:844
- - /sbin/iptables
    iptables -I OUTPUT -p tcp --source-port 39335 -j ACCEPT
    3⤵
    PID:846
- /bin/sh
  sh -c "iptables -I PREROUTING -t nat -p tcp --destination-port 39335 -j ACCEPT"
  2⤵
  PID:847
- - /sbin/iptables
    iptables -I PREROUTING -t nat -p tcp --destination-port 39335 -j ACCEPT
    3⤵
    PID:848
- /bin/sh
  sh -c "iptables -I POSTROUTING -t nat -p tcp --source-port 39335 -j ACCEPT"
  2⤵
  PID:855
- - /sbin/iptables
    iptables -I POSTROUTING -t nat -p tcp --source-port 39335 -j ACCEPT
    3⤵
    PID:856
- /bin/sh
  sh -c "iptables -I INPUT -p tcp --dport 39335 -j ACCEPT"
  2⤵
  PID:857
- - /sbin/iptables
    iptables -I INPUT -p tcp --dport 39335 -j ACCEPT
    3⤵
    PID:858
- /bin/sh
  sh -c "iptables -I OUTPUT -p tcp --sport 39335 -j ACCEPT"
  2⤵
  PID:859
- - /sbin/iptables
    iptables -I OUTPUT -p tcp --sport 39335 -j ACCEPT
    3⤵
    PID:860
- /bin/sh
  sh -c "iptables -I PREROUTING -t nat -p tcp --dport 39335 -j ACCEPT"
  2⤵
  PID:861
- - /sbin/iptables
    iptables -I PREROUTING -t nat -p tcp --dport 39335 -j ACCEPT
    3⤵
    PID:862
- /bin/sh
  sh -c "iptables -I POSTROUTING -t nat -p tcp --sport 39335 -j ACCEPT"
  2⤵
  PID:863
- - /sbin/iptables
    iptables -I POSTROUTING -t nat -p tcp --sport 39335 -j ACCEPT
    3⤵
    PID:864
- /bin/sh
  sh -c "iptables -I INPUT -p tcp --destination-port 22 -j DROP"
  2⤵
  PID:865
- - /sbin/iptables
    iptables -I INPUT -p tcp --destination-port 22 -j DROP
    3⤵
    PID:866
- /bin/sh
  sh -c "iptables -I INPUT -p tcp --destination-port 23 -j DROP"
  2⤵
  PID:867
- - /sbin/iptables
    iptables -I INPUT -p tcp --destination-port 23 -j DROP
    3⤵
    PID:868

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Hijack Execution Flow

T1574

Privilege Escalation

Hijack Execution Flow

T1574

Defense Evasion

Hijack Execution Flow

T1574

Impair Defenses

T1562

Credential Access

Discovery

Network Service Discovery

T1046

System Network Configuration Discovery

T1016

System Network Connections Discovery

T1049

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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