f6c97b1e2ed02578ca1066c8235ba4f991e645f89012406c639dbccc6582eec8

Analysis

max time kernel
150s
max time network
153s
platform
debian-9_mipsel
resource
debian9-mipsel-20240226-en
resource tags

arch:mipselimage:debian9-mipsel-20240226-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipselsystem
submitted
01-03-2024 14:17

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General

Target

i
Size

134KB
MD5

3849f30b51a5c49e8d1546960cc206c7
SHA1

61c74136534b826059c63221a2373dc0613a47b7
SHA256

f6c97b1e2ed02578ca1066c8235ba4f991e645f89012406c639dbccc6582eec8
SHA512

43d79293d1fbf716111c27e50df95a0860a0d706079625fa2b8a6b57c5ee06fa7b5b6b8c0acae33714a2181686426728513c990534e44b6f03a05dde0629ab86
SSDEEP

3072:biMYFJvw6Yh0b1gKobtCGCmCRlrisfrYm:fYFJvwe1gKCYVl2szN

Score

9^/10

discovery persistence upx

Malware Config

Signatures

Contacts a large (11516) 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	699

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	i

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

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/S95baby.sh
File opened for modification	/etc/init.d/hwclock.sh
File opened for modification	/etc/init.d/console-setup.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

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	i
File opened for reading	/proc/net/raw	i
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/72/stat	killall
File opened for reading	/proc/164/stat	killall
File opened for reading	/proc/688/stat	killall
File opened for reading	/proc/694/stat	killall
File opened for reading	/proc/701/stat	killall
File opened for reading	/proc/10/stat	killall
File opened for reading	/proc/36/stat	killall
File opened for reading	/proc/66/stat	killall
File opened for reading	/proc/378/stat	killall
File opened for reading	/proc/534/stat	killall
File opened for reading	/proc/688/cmdline	killall
File opened for reading	/proc/17/stat	killall
File opened for reading	/proc/377/stat	killall
File opened for reading	/proc/674/stat	killall
File opened for reading	/proc/690/stat	killall
File opened for reading	/proc/700/stat	killall
File opened for reading	/proc/self/exe	i
File opened for reading	/proc/2/stat	killall
File opened for reading	/proc/6/stat	killall
File opened for reading	/proc/11/stat	killall
File opened for reading	/proc/37/stat	killall
File opened for reading	/proc/114/stat	killall
File opened for reading	/proc/699/stat	killall
File opened for reading	/proc/75/stat	killall
File opened for reading	/proc/113/stat	killall
File opened for reading	/proc/496/stat	killall
File opened for reading	/proc/532/stat	killall
File opened for reading	/proc/mounts	Process not Found
File opened for reading	/proc/3/stat	killall
File opened for reading	/proc/4/stat	killall
File opened for reading	/proc/15/stat	killall
File opened for reading	/proc/71/stat	killall
File opened for reading	/proc/144/stat	killall
File opened for reading	/proc/144/cmdline	killall
File opened for reading	/proc/689/stat	killall
File opened for reading	/proc/20/stat	killall
File opened for reading	/proc/114/cmdline	killall
File opened for reading	/proc/707/stat	killall
File opened for reading	/proc/1/stat	killall
File opened for reading	/proc/104/stat	killall
File opened for reading	/proc/327/stat	killall
File opened for reading	/proc/484/stat	killall
File opened for reading	/proc/693/stat	killall
File opened for reading	/proc/7/stat	killall
File opened for reading	/proc/18/stat	killall
File opened for reading	/proc/69/stat	killall
File opened for reading	/proc/77/stat	killall
File opened for reading	/proc/326/stat	killall
File opened for reading	/proc/388/stat	killall
File opened for reading	/proc/8/stat	killall
File opened for reading	/proc/21/stat	killall
File opened for reading	/proc/74/stat	killall
File opened for reading	/proc/16/stat	killall
File opened for reading	/proc/19/stat	killall
File opened for reading	/proc/384/stat	killall
File opened for reading	/proc/5/stat	killall
File opened for reading	/proc/12/stat	killall
File opened for reading	/proc/22/stat	killall
File opened for reading	/proc/23/stat	killall
File opened for reading	/proc/24/stat	killall
File opened for reading	/proc/355/stat	killall
File opened for reading	/proc/filesystems	killall
File opened for reading	/proc/14/stat	killall
File opened for reading	/proc/80/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	i
File opened for modification	/tmp/.config	Process not Found

/tmp/i
/tmp/i
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:701
- /usr/bin/killall
  killall -9 telnetd utelnetd scfgmgr
  2⤵
  - Reads runtime system information
  PID:706

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 43243 -j ACCEPT"
1⤵
PID:757
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 43243 -j ACCEPT
  2⤵
  PID:758

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 43243 -j ACCEPT"
1⤵
PID:764
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 43243 -j ACCEPT
  2⤵
  PID:765

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p tcp --destination-port 43243 -j ACCEPT"
1⤵
PID:767
- /sbin/iptables
  iptables -I PREROUTING -t nat -p tcp --destination-port 43243 -j ACCEPT
  2⤵
  PID:768

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --source-port 43243 -j ACCEPT"
1⤵
PID:775
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p tcp --source-port 43243 -j ACCEPT
  2⤵
  PID:776

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 43243 -j ACCEPT"
1⤵
PID:778
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 43243 -j ACCEPT
  2⤵
  PID:779

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 43243 -j ACCEPT"
1⤵
PID:780
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 43243 -j ACCEPT
  2⤵
  PID:782

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 22 -j DROP"
1⤵
PID:783
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 22 -j DROP
  2⤵
  PID:786

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p tcp --dport 43243 -j ACCEPT"
1⤵
PID:785
- /sbin/iptables
  iptables -I PREROUTING -t nat -p tcp --dport 43243 -j ACCEPT
  2⤵
  PID:787

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 23 -j DROP"
1⤵
PID:788
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 23 -j DROP
  2⤵
  PID:789

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --sport 43243 -j ACCEPT"
1⤵
PID:790
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p tcp --sport 43243 -j ACCEPT
  2⤵
  PID:791

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 2323 -j DROP"
1⤵
PID:793
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 2323 -j DROP
  2⤵
  PID:794

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 22 -j DROP"
1⤵
PID:798
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 22 -j DROP
  2⤵
  PID:799

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 23 -j DROP"
1⤵
PID:800
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 23 -j DROP
  2⤵
  PID:801

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 2323 -j DROP"
1⤵
PID:803
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 2323 -j DROP
  2⤵
  PID:804

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 22 -j DROP"
1⤵
PID:807
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 22 -j DROP
  2⤵
  PID:809

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 23 -j DROP"
1⤵
PID:811
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 23 -j DROP
  2⤵
  PID:813

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 2323 -j DROP"
1⤵
PID:814
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 2323 -j DROP
  2⤵
  PID:815

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 22 -j DROP"
1⤵
PID:820
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 22 -j DROP
  2⤵
  PID:821

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 23 -j DROP"
1⤵
PID:823
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 23 -j DROP
  2⤵
  PID:824

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 2323 -j DROP"
1⤵
PID:825
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 2323 -j DROP
  2⤵
  PID:826

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 58000 -j DROP"
1⤵
PID:829
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 58000 -j DROP
  2⤵
  PID:830

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 58000 -j DROP"
1⤵
PID:832
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 58000 -j DROP
  2⤵
  PID:833

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 58000 -j DROP"
1⤵
PID:834
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 58000 -j DROP
  2⤵
  PID:836

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 58000 -j DROP"
1⤵
PID:837
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 58000 -j DROP
  2⤵
  PID:838

/bin/sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer URL \"http://127.0.0.1\""
1⤵
PID:839

/bin/sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer ConnectionRequestPassword \"acsMozi\""
1⤵
PID:840

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 35000 -j DROP"
1⤵
PID:841
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 35000 -j DROP
  2⤵
  PID:842

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 50023 -j DROP"
1⤵
PID:843
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 50023 -j DROP
  2⤵
  PID:844

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 50023 -j DROP"
1⤵
PID:846
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 50023 -j DROP
  2⤵
  PID:847

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 35000 -j DROP"
1⤵
PID:848
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 35000 -j DROP
  2⤵
  PID:849

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 7547 -j DROP"
1⤵
PID:850
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 7547 -j DROP
  2⤵
  PID:851

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 7547 -j DROP"
1⤵
PID:852
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 7547 -j DROP
  2⤵
  PID:853

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 35000 -j DROP"
1⤵
PID:854
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 35000 -j DROP
  2⤵
  PID:855

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 50023 -j DROP"
1⤵
PID:856
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 50023 -j DROP
  2⤵
  PID:857

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 50023 -j DROP"
1⤵
PID:858
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 50023 -j DROP
  2⤵
  PID:859

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 35000 -j DROP"
1⤵
PID:860
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 35000 -j DROP
  2⤵
  PID:861

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 7547 -j DROP"
1⤵
PID:862
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 7547 -j DROP
  2⤵
  PID:863

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 7547 -j DROP"
1⤵
PID:864
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 7547 -j DROP
  2⤵
  PID:865

/bin/sh
sh -c "iptables -I INPUT -p udp --destination-port 8080 -j ACCEPT"
1⤵
PID:870
- /sbin/iptables
  iptables -I INPUT -p udp --destination-port 8080 -j ACCEPT
  2⤵
  PID:871

/bin/sh
sh -c "iptables -I OUTPUT -p udp --source-port 8080 -j ACCEPT"
1⤵
PID:873
- /sbin/iptables
  iptables -I OUTPUT -p udp --source-port 8080 -j ACCEPT
  2⤵
  PID:874

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p udp --destination-port 8080 -j ACCEPT"
1⤵
PID:875
- /sbin/iptables
  iptables -I PREROUTING -t nat -p udp --destination-port 8080 -j ACCEPT
  2⤵
  PID:877

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p udp --source-port 8080 -j ACCEPT"
1⤵
PID:879
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p udp --source-port 8080 -j ACCEPT
  2⤵
  PID:880

/bin/sh
sh -c "iptables -I INPUT -p udp --dport 8080 -j ACCEPT"
1⤵
PID:881
- /sbin/iptables
  iptables -I INPUT -p udp --dport 8080 -j ACCEPT
  2⤵
  PID:882

/bin/sh
sh -c "iptables -I OUTPUT -p udp --sport 8080 -j ACCEPT"
1⤵
PID:884
- /sbin/iptables
  iptables -I OUTPUT -p udp --sport 8080 -j ACCEPT
  2⤵
  PID:886

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p udp --dport 8080 -j ACCEPT"
1⤵
PID:887
- /sbin/iptables
  iptables -I PREROUTING -t nat -p udp --dport 8080 -j ACCEPT
  2⤵
  PID:888

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p udp --sport 8080 -j ACCEPT"
1⤵
PID:890
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p udp --sport 8080 -j ACCEPT
  2⤵
  PID:891

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
140B

MD5
457412db2275c971a2f32aef0c05f0ef

SHA1
81634d651b7bd25434966cb91dd5f1f1683ae363

SHA256
348a557ecef7585e315fa04bea4a179b715c795993ca331fbaf3677c79e0be5e

SHA512
4bf11f480c43a51666b8ddb335c59159c142299995ef5aad0cabe266e9652482f3032759150d6c467494ac10e7210976a935b61642cb214a438be016a7244a2c

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/tmp/.config

Filesize
33B

MD5
54b9d9d2f4aa11e4c379282bd6d7f9aa

SHA1
2a03ed1727e05b808830d4043e18a730fc0a6977

SHA256
4c7ff3d79289279e21ca58917087a01e0135cc18369757f83d438d399205ff44

SHA512
9200bfce56ff2f0b871e5989fb1f469eeec7ea16aa9d9aa2073767667a75822910c37186807dfaa71094e3ba37ba292d9199f1e7f573a42fce9c236b56ba3955

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/usr/networks

Filesize
134KB

MD5
3849f30b51a5c49e8d1546960cc206c7

SHA1
61c74136534b826059c63221a2373dc0613a47b7

SHA256
f6c97b1e2ed02578ca1066c8235ba4f991e645f89012406c639dbccc6582eec8

SHA512
43d79293d1fbf716111c27e50df95a0860a0d706079625fa2b8a6b57c5ee06fa7b5b6b8c0acae33714a2181686426728513c990534e44b6f03a05dde0629ab86

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads