12013662c71da69de977c04cd7021f13a70cf7bed4ca6c82acbc100464d4b0ef

Analysis

max time kernel
150s
max time network
152s
platform
debian-12_armhf
resource
debian12-armhf-20240418-en
resource tags

arch:armhfimage:debian12-armhf-20240418-enkernel:6.1.0-17-armmp-lpaelocale:en-usos:debian-12-armhfsystem
submitted
01-08-2024 12:02

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General

Target

i.zip
Size

300KB
MD5

eec5c6c219535fba3a0492ea8118b397
SHA1

292559e94f1c04b7d0c65d4a01bbbc5dc1ff6f21
SHA256

12013662c71da69de977c04cd7021f13a70cf7bed4ca6c82acbc100464d4b0ef
SHA512

3482c8324a18302f0f37b6e23ed85f24fff9f50bb568d8fd7461bf57f077a7c592f7a88bb2e1c398699958946d87bb93ab744d13a0003f9b879c15e6471f7400
SSDEEP

6144:T2s/gAWuboqsJ9xcJxspJBqQgTuaJZRhVabE5wKSDP99zBa77oNsKqqfPqOJ:T2s/bW+UmJqBxAuaPRhVabEDSDP99zBT

Score

9^/10

discovery persistence

Malware Config

Signatures

Contacts a large (6638) 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

Processes:

i.zip

description ioc process

File opened for modification /dev/watchdog i.zip
File opened for modification /dev/misc/watchdog i.zip
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
Creates/modifies environment variables 1 TTPs 1 IoCs
Creating/modifying environment variables is a common persistence mechanism.
persistence

Hijack Execution Flow
T1574

Processes:

i.zip

description ioc process

File opened for modification /etc/profile.d/gawk.sh i.zip
Enumerates active TCP sockets 1 TTPs 1 IoCs
Gets active TCP sockets from /proc virtual filesystem.

System Network Connections Discovery
T1049

Processes:

i.zip

description ioc process

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

description	ioc	process
File opened for modification	/dev/watchdog	i.zip
File opened for modification	/dev/misc/watchdog	i.zip

description	ioc	process
File opened for modification	/etc/profile.d/gawk.sh	i.zip

description	ioc	process
File opened for reading	/proc/net/tcp	i.zip

Modifies init.d 1 TTPs 4 IoCs

Adds/modifies system service, likely for persistence.

persistence

Boot or Logon Autostart Execution

T1547

Processes:

i.zip

description	ioc	process
File opened for modification	/etc/init.d/hwclock.sh	i.zip
File opened for modification	/etc/init.d/S95baby.sh	i.zip
File opened for modification	/etc/init.d/keyboard-setup.sh	i.zip
File opened for modification	/etc/init.d/console-setup.sh	i.zip

Reads system routing table 1 TTPs 1 IoCs
Gets active network interfaces from /proc virtual filesystem.

System Network Configuration Discovery
T1016

Processes:

i.zip

description ioc process

File opened for reading /proc/net/route i.zip
Write file to user bin folder 1 TTPs 1 IoCs

Hijack Execution Flow
T1574

Processes:

i.zip

description ioc process

File opened for modification /usr/bin/gvmap.sh i.zip
Writes file to system bin folder 1 TTPs 2 IoCs

Hijack Execution Flow
T1574

Processes:

i.zip

description ioc process

File opened for modification /sbin/watchdog i.zip
File opened for modification /bin/watchdog i.zip
Modifies Bash startup script 1 TTPs 1 IoCs
persistence

Boot or Logon Autostart Execution
T1547

Processes:

i.zip

description ioc process

File opened for modification /etc/profile.d/gawk.sh i.zip
Changes its process name 1 IoCs

Processes:

description ioc pid

Changes the process name, possibly in an attempt to hide itself dropbear 710
Reads system network configuration 1 TTPs 3 IoCs
Uses contents of /proc filesystem to enumerate network settings.

System Network Configuration Discovery
T1016

Processes:

i.zip

description ioc process

File opened for reading /proc/net/tcp i.zip
File opened for reading /proc/net/raw i.zip
File opened for reading /proc/net/route i.zip

description	ioc	process
File opened for reading	/proc/net/route	i.zip

description	ioc	process
File opened for modification	/usr/bin/gvmap.sh	i.zip

description	ioc	process
File opened for modification	/sbin/watchdog	i.zip
File opened for modification	/bin/watchdog	i.zip

description	ioc	process
File opened for modification	/etc/profile.d/gawk.sh	i.zip

description	ioc	pid
Changes the process name, possibly in an attempt to hide itself	dropbear	710

description	ioc	process
File opened for reading	/proc/net/tcp	i.zip
File opened for reading	/proc/net/raw	i.zip
File opened for reading	/proc/net/route	i.zip

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

Processes:

killalli.zip

description	ioc	process
File opened for reading	/proc/2	killall
File opened for reading	/proc/33/stat	killall
File opened for reading	/proc/24/stat	killall
File opened for reading	/proc/143/cmdline	killall
File opened for reading	/proc/704	killall
File opened for reading	/proc/5	killall
File opened for reading	/proc/20/stat	killall
File opened for reading	/proc/21/stat	killall
File opened for reading	/proc/193/stat	killall
File opened for reading	/proc/685	killall
File opened for reading	/proc/26	killall
File opened for reading	/proc/29/stat	killall
File opened for reading	/proc/35/stat	killall
File opened for reading	/proc/44	killall
File opened for reading	/proc/142	killall
File opened for reading	/proc/351/stat	killall
File opened for reading	/proc/11	killall
File opened for reading	/proc/22	killall
File opened for reading	/proc/51/stat	killall
File opened for reading	/proc/631/stat	killall
File opened for reading	/proc/23	killall
File opened for reading	/proc/34/stat	killall
File opened for reading	/proc/46	killall
File opened for reading	/proc/351	killall
File opened for reading	/proc/707/stat	killall
File opened for reading	/proc/8/stat	killall
File opened for reading	/proc/9	killall
File opened for reading	/proc/12	killall
File opened for reading	/proc/25	killall
File opened for reading	/proc/30/stat	killall
File opened for reading	/proc/362	killall
File opened for reading	/proc/665/stat	killall
File opened for reading	/proc/17	killall
File opened for reading	/proc/28/stat	killall
File opened for reading	/proc/143/stat	killall
File opened for reading	/proc/18/stat	killall
File opened for reading	/proc/24	killall
File opened for reading	/proc/327	killall
File opened for reading	/proc/6	killall
File opened for reading	/proc/18	killall
File opened for reading	/proc/186/stat	killall
File opened for reading	/proc/242	killall
File opened for reading	/proc/681/cmdline	killall
File opened for reading	/proc/708/stat	killall
File opened for reading	/proc/17/stat	killall
File opened for reading	/proc/56	killall
File opened for reading	/proc/143	killall
File opened for reading	/proc/291	killall
File opened for reading	/proc/685/stat	killall
File opened for reading	/proc/stat	i.zip
File opened for reading	/proc/19	killall
File opened for reading	/proc/27/stat	killall
File opened for reading	/proc/631	killall
File opened for reading	/proc/699/stat	killall
File opened for reading	/proc/13	killall
File opened for reading	/proc/34	killall
File opened for reading	/proc/57	killall
File opened for reading	/proc/11/stat	killall
File opened for reading	/proc/14	killall
File opened for reading	/proc/193	killall
File opened for reading	/proc/327/stat	killall
File opened for reading	/proc/647	killall
File opened for reading	/proc/4	killall
File opened for reading	/proc/13/stat	killall

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

Processes:

i.zip

description ioc process

File opened for modification /tmp/.ips i.zip
File opened for modification /tmp/.config i.zip

description	ioc	process
File opened for modification	/tmp/.ips	i.zip
File opened for modification	/tmp/.config	i.zip

/tmp/i.zip
/tmp/i.zip
1⤵
- Modifies Watchdog functionality
- Creates/modifies environment variables
- Enumerates active TCP sockets
- Modifies init.d
- Reads system routing table
- Write file to user bin folder
- Writes file to system bin folder
- Modifies Bash startup script
- Reads system network configuration
- Reads runtime system information
- Writes file to tmp directory
PID:706
- /bin/sh
  /bin/sh -c "killall -9 telnetd utelnetd scfgmgr"
  2⤵
  PID:711
- - /usr/bin/killall
    killall -9 telnetd utelnetd scfgmgr
    3⤵
    - Reads runtime system information
    PID:713
- /bin/sh
  /bin/sh -c "iptables -I INPUT -p tcp --destination-port 53407 -j ACCEPT"
  2⤵
  PID:769
- /bin/sh
  /bin/sh -c "iptables -I OUTPUT -p tcp --source-port 53407 -j ACCEPT"
  2⤵
  PID:770
- /bin/sh
  /bin/sh -c "iptables -I PREROUTING -t nat -p tcp --destination-port 53407 -j ACCEPT"
  2⤵
  PID:771
- /bin/sh
  /bin/sh -c "iptables -I POSTROUTING -t nat -p tcp --source-port 53407 -j ACCEPT"
  2⤵
  PID:772
- /bin/sh
  /bin/sh -c "iptables -I INPUT -p tcp --dport 53407 -j ACCEPT"
  2⤵
  PID:773
- /bin/sh
  /bin/sh -c "iptables -I OUTPUT -p tcp --sport 53407 -j ACCEPT"
  2⤵
  PID:774
- /bin/sh
  /bin/sh -c "iptables -I PREROUTING -t nat -p tcp --dport 53407 -j ACCEPT"
  2⤵
  PID:775
- /bin/sh
  /bin/sh -c "iptables -I POSTROUTING -t nat -p tcp --sport 53407 -j ACCEPT"
  2⤵
  PID:776
- /bin/sh
  /bin/sh -c "iptables -I INPUT -p tcp --destination-port 58000 -j DROP"
  2⤵
  PID:777
- /bin/sh
  /bin/sh -c "iptables -I OUTPUT -p tcp --source-port 58000 -j DROP"
  2⤵
  PID:778
- /bin/sh
  /bin/sh -c "iptables -I INPUT -p tcp --dport 58000 -j DROP"
  2⤵
  PID:779
- /bin/sh
  /bin/sh -c "iptables -I OUTPUT -p tcp --sport 58000 -j DROP"
  2⤵
  PID:780
- /bin/sh
  /bin/sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer URL \"http://127.0.0.1\""
  2⤵
  PID:781
- /bin/sh
  /bin/sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer ConnectionRequestPassword \"acsMozi\""
  2⤵
  PID:782
- /bin/sh
  /bin/sh -c "iptables -I INPUT -p tcp --destination-port 35000 -j DROP"
  2⤵
  PID:783
- /bin/sh
  /bin/sh -c "iptables -I INPUT -p tcp --destination-port 50023 -j DROP"
  2⤵
  PID:784
- /bin/sh
  /bin/sh -c "iptables -I OUTPUT -p tcp --source-port 50023 -j DROP"
  2⤵
  PID:785
- /bin/sh
  /bin/sh -c "iptables -I OUTPUT -p tcp --source-port 35000 -j DROP"
  2⤵
  PID:786
- /bin/sh
  /bin/sh -c "iptables -I INPUT -p tcp --destination-port 7547 -j DROP"
  2⤵
  PID:787
- /bin/sh
  /bin/sh -c "iptables -I OUTPUT -p tcp --source-port 7547 -j DROP"
  2⤵
  PID:788
- /bin/sh
  /bin/sh -c "iptables -I INPUT -p tcp --dport 35000 -j DROP"
  2⤵
  PID:789
- /bin/sh
  /bin/sh -c "iptables -I INPUT -p tcp --dport 50023 -j DROP"
  2⤵
  PID:790
- /bin/sh
  /bin/sh -c "iptables -I OUTPUT -p tcp --sport 50023 -j DROP"
  2⤵
  PID:791
- /bin/sh
  /bin/sh -c "iptables -I OUTPUT -p tcp --sport 35000 -j DROP"
  2⤵
  PID:792
- /bin/sh
  /bin/sh -c "iptables -I INPUT -p tcp --dport 7547 -j DROP"
  2⤵
  PID:793
- /bin/sh
  /bin/sh -c "iptables -I OUTPUT -p tcp --sport 7547 -j DROP"
  2⤵
  PID:794
- /bin/sh
  /bin/sh -c "iptables -I INPUT -p udp --destination-port 60365 -j ACCEPT"
  2⤵
  PID:795
- /bin/sh
  /bin/sh -c "iptables -I OUTPUT -p udp --source-port 60365 -j ACCEPT"
  2⤵
  PID:796
- /bin/sh
  /bin/sh -c "iptables -I PREROUTING -t nat -p udp --destination-port 60365 -j ACCEPT"
  2⤵
  PID:797
- /bin/sh
  /bin/sh -c "iptables -I POSTROUTING -t nat -p udp --source-port 60365 -j ACCEPT"
  2⤵
  PID:798
- /bin/sh
  /bin/sh -c "iptables -I INPUT -p udp --dport 60365 -j ACCEPT"
  2⤵
  PID:799
- /bin/sh
  /bin/sh -c "iptables -I OUTPUT -p udp --sport 60365 -j ACCEPT"
  2⤵
  PID:800
- /bin/sh
  /bin/sh -c "iptables -I PREROUTING -t nat -p udp --dport 60365 -j ACCEPT"
  2⤵
  PID:801
- /bin/sh
  /bin/sh -c "iptables -I POSTROUTING -t nat -p udp --sport 60365 -j ACCEPT"
  2⤵
  PID:802

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

Replay Monitor

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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
300KB

MD5
eec5c6c219535fba3a0492ea8118b397

SHA1
292559e94f1c04b7d0c65d4a01bbbc5dc1ff6f21

SHA256
12013662c71da69de977c04cd7021f13a70cf7bed4ca6c82acbc100464d4b0ef

SHA512
3482c8324a18302f0f37b6e23ed85f24fff9f50bb568d8fd7461bf57f077a7c592f7a88bb2e1c398699958946d87bb93ab744d13a0003f9b879c15e6471f7400

Download Submit