228afed98ae0a5db14c0a3fd9f6944cb1df671ceb93935fa806b98bc67b43887

Analysis

max time kernel
149s
max time network
151s
platform
debian-9_mips
resource
debian9-mipsbe-20231222-en
resource tags

arch:mipsimage:debian9-mipsbe-20231222-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipssystem
submitted
13/01/2024, 21:31

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General

Target

597671cd3734a31b11003cc76fbe8ce2
Size

288KB
MD5

597671cd3734a31b11003cc76fbe8ce2
SHA1

6d3343bc8bd8e35be00fb351e026d47d5eb8b2f9
SHA256

228afed98ae0a5db14c0a3fd9f6944cb1df671ceb93935fa806b98bc67b43887
SHA512

ec1e19234dec15ead88f160486023b6759ab478d053b14c888e6ea78a4e4ba37b4a10740846def7de599dedbfcce4f0855a75f1a4d6428ecc85826e2005f48e6
SSDEEP

6144:p3lOYoaja8xzx/0wsxzSigabE5wKSDP99zBa77oNsKqqfPqOJ:p1CG/jsxzXgabEDSDP99zBa/HKqoPqOJ

Score

9^/10

discovery persistence upx

Malware Config

Signatures

Contacts a large (13934) 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-3.dat	patched_upx

Changes its process name 1 IoCs

description	ioc	pid
Changes the process name, possibly in an attempt to hide itself	sshd	735

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-3.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	Process
File opened for reading	/proc/net/tcp	597671cd3734a31b11003cc76fbe8ce2

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

Modifies init.d 1 TTPs 1 IoCs

Adds/modifies system service, likely for persistence.

persistence

Boot or Logon Autostart Execution

T1547

description	ioc
File opened for modification	/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

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

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 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	597671cd3734a31b11003cc76fbe8ce2
File opened for reading	/proc/net/raw	597671cd3734a31b11003cc76fbe8ce2
File opened for reading	/proc/net/route	Process not Found

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

description	ioc	Process
File opened for reading	/proc/337/stat	killall
File opened for reading	/proc/390/stat	killall
File opened for reading	/proc/439/stat	killall
File opened for reading	/proc/739/stat	killall
File opened for reading	/proc/4/stat	killall
File opened for reading	/proc/14/stat	killall
File opened for reading	/proc/82/stat	killall
File opened for reading	/proc/394/stat	killall
File opened for reading	/proc/704/stat	killall
File opened for reading	/proc/718/cmdline	killall
File opened for reading	/proc/719/cmdline	killall
File opened for reading	/proc/13/stat	killall
File opened for reading	/proc/730/stat	killall
File opened for reading	/proc/6/stat	killall
File opened for reading	/proc/125/stat	killall
File opened for reading	/proc/391/stat	killall
File opened for reading	/proc/723/stat	killall
File opened for reading	/proc/735/cmdline	killall
File opened for reading	/proc/37/stat	killall
File opened for reading	/proc/160/stat	killall
File opened for reading	/proc/173/stat	killall
File opened for reading	/proc/80/stat	killall
File opened for reading	/proc/126/cmdline	killall
File opened for reading	/proc/724/stat	killall
File opened for reading	/proc/736/stat	killall
File opened for reading	/proc/filesystems	killall
File opened for reading	/proc/720/stat	killall
File opened for reading	/proc/16/stat	killall
File opened for reading	/proc/21/stat	killall
File opened for reading	/proc/24/stat	killall
File opened for reading	/proc/36/stat	killall
File opened for reading	/proc/70/stat	killall
File opened for reading	/proc/340/stat	killall
File opened for reading	/proc/342/stat	killall
File opened for reading	/proc/3/stat	killall
File opened for reading	/proc/7/stat	killall
File opened for reading	/proc/20/stat	killall
File opened for reading	/proc/76/stat	killall
File opened for reading	/proc/79/stat	killall
File opened for reading	/proc/242/stat	killall
File opened for reading	/proc/677/stat	killall
File opened for reading	/proc/727/stat	killall
File opened for reading	/proc/1/stat	killall
File opened for reading	/proc/12/stat	killall
File opened for reading	/proc/71/stat	killall
File opened for reading	/proc/73/stat	killall
File opened for reading	/proc/338/stat	killall
File opened for reading	/proc/684/stat	killall
File opened for reading	/proc/718/stat	killall
File opened for reading	/proc/9/stat	killall
File opened for reading	/proc/735/stat	killall
File opened for reading	/proc/11/stat	killall
File opened for reading	/proc/17/stat	killall
File opened for reading	/proc/155/stat	killall
File opened for reading	/proc/683/stat	killall
File opened for reading	/proc/10/stat	killall
File opened for reading	/proc/15/stat	killall
File opened for reading	/proc/19/stat	killall
File opened for reading	/proc/110/stat	killall
File opened for reading	/proc/126/stat	killall
File opened for reading	/proc/727/cmdline	killall
File opened for reading	/proc/5/stat	killall
File opened for reading	/proc/22/stat	killall
File opened for reading	/proc/66/stat	killall

Writes file to tmp directory 2 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/.ips	597671cd3734a31b11003cc76fbe8ce2
File opened for modification	/tmp/.config	Process not Found

/tmp/597671cd3734a31b11003cc76fbe8ce2
/tmp/597671cd3734a31b11003cc76fbe8ce2
1⤵
- Enumerates active TCP sockets
- Reads system network configuration
- Writes file to tmp directory
PID:732

/bin/sh
sh -c "killall -9 telnetd utelnetd scfgmgr"
1⤵
PID:736
- /usr/bin/killall
  killall -9 telnetd utelnetd scfgmgr
  2⤵
  - Reads runtime system information
  PID:738

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 40103 -j ACCEPT"
1⤵
PID:832
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 40103 -j ACCEPT
  2⤵
  PID:833

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 40103 -j ACCEPT"
1⤵
PID:839
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 40103 -j ACCEPT
  2⤵
  PID:840

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p tcp --destination-port 40103 -j ACCEPT"
1⤵
PID:842
- /sbin/iptables
  iptables -I PREROUTING -t nat -p tcp --destination-port 40103 -j ACCEPT
  2⤵
  PID:843

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --source-port 40103 -j ACCEPT"
1⤵
PID:852
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p tcp --source-port 40103 -j ACCEPT
  2⤵
  PID:854

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 40103 -j ACCEPT"
1⤵
PID:856
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 40103 -j ACCEPT
  2⤵
  PID:857

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 40103 -j ACCEPT"
1⤵
PID:858
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 40103 -j ACCEPT
  2⤵
  PID:860

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p tcp --dport 40103 -j ACCEPT"
1⤵
PID:862
- /sbin/iptables
  iptables -I PREROUTING -t nat -p tcp --dport 40103 -j ACCEPT
  2⤵
  PID:863

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --sport 40103 -j ACCEPT"
1⤵
PID:864
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p tcp --sport 40103 -j ACCEPT
  2⤵
  PID:865

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 22 -j DROP"
1⤵
PID:866
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 22 -j DROP
  2⤵
  PID:867

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 23 -j DROP"
1⤵
PID:868
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 23 -j DROP
  2⤵
  PID:869

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 2323 -j DROP"
1⤵
PID:870
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 2323 -j DROP
  2⤵
  PID:871

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 22 -j DROP"
1⤵
PID:872
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 22 -j DROP
  2⤵
  PID:873

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 23 -j DROP"
1⤵
PID:874
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 23 -j DROP
  2⤵
  PID:875

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 2323 -j DROP"
1⤵
PID:876
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 2323 -j DROP
  2⤵
  PID:877

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 22 -j DROP"
1⤵
PID:878
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 22 -j DROP
  2⤵
  PID:879

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 23 -j DROP"
1⤵
PID:880
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 23 -j DROP
  2⤵
  PID:881

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 2323 -j DROP"
1⤵
PID:882
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 2323 -j DROP
  2⤵
  PID:883

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 22 -j DROP"
1⤵
PID:884
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 22 -j DROP
  2⤵
  PID:885

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 23 -j DROP"
1⤵
PID:886
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 23 -j DROP
  2⤵
  PID:887

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 2323 -j DROP"
1⤵
PID:888
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 2323 -j DROP
  2⤵
  PID:889

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 58000 -j DROP"
1⤵
PID:890
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 58000 -j DROP
  2⤵
  PID:891

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 58000 -j DROP"
1⤵
PID:892
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 58000 -j DROP
  2⤵
  PID:893

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 58000 -j DROP"
1⤵
PID:894
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 58000 -j DROP
  2⤵
  PID:895

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 58000 -j DROP"
1⤵
PID:896
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 58000 -j DROP
  2⤵
  PID:897

/bin/sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer URL \"http://127.0.0.1\""
1⤵
PID:898

/sbin/iptables
iptables -I OUTPUT -p tcp --source-port 7547 -j DROP
1⤵
PID:911

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 35000 -j DROP"
1⤵
PID:912
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 35000 -j DROP
  2⤵
  PID:913

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 50023 -j DROP"
1⤵
PID:914
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 50023 -j DROP
  2⤵
  PID:915

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 50023 -j DROP"
1⤵
PID:916
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 50023 -j DROP
  2⤵
  PID:917

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 35000 -j DROP"
1⤵
PID:918
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 35000 -j DROP
  2⤵
  PID:919

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 7547 -j DROP"
1⤵
PID:920
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 7547 -j DROP
  2⤵
  PID:921

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 7547 -j DROP"
1⤵
PID:922
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 7547 -j DROP
  2⤵
  PID:923

/bin/sh
sh -c "iptables -I INPUT -p udp --dport 8082 -j ACCEPT"
1⤵
PID:935
- /sbin/iptables
  iptables -I INPUT -p udp --dport 8082 -j ACCEPT
  2⤵
  PID:936

/bin/sh
sh -c "iptables -I OUTPUT -p udp --sport 8082 -j ACCEPT"
1⤵
PID:937
- /sbin/iptables
  iptables -I OUTPUT -p udp --sport 8082 -j ACCEPT
  2⤵
  PID:938

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p udp --dport 8082 -j ACCEPT"
1⤵
PID:939
- /sbin/iptables
  iptables -I PREROUTING -t nat -p udp --dport 8082 -j ACCEPT
  2⤵
  PID:940

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p udp --sport 8082 -j ACCEPT"
1⤵
PID:941
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p udp --sport 8082 -j ACCEPT
  2⤵
  PID:942

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Hijack Execution Flow

T1574

Privilege Escalation

Boot or Logon Autostart Execution

T1547

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

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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
288KB

MD5
597671cd3734a31b11003cc76fbe8ce2

SHA1
6d3343bc8bd8e35be00fb351e026d47d5eb8b2f9

SHA256
228afed98ae0a5db14c0a3fd9f6944cb1df671ceb93935fa806b98bc67b43887

SHA512
ec1e19234dec15ead88f160486023b6759ab478d053b14c888e6ea78a4e4ba37b4a10740846def7de599dedbfcce4f0855a75f1a4d6428ecc85826e2005f48e6

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads