4293c1d8574dc87c58360d6bac3daa182f64f7785c9d41da5e0741d2b1817fc7

Analysis

max time kernel
122s
max time network
151s
platform
debian-9_mips
resource
debian9-mipsbe-20221125-en
resource tags

arch:mipsimage:debian9-mipsbe-20221125-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipssystem
submitted
05-05-2023 14:21

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General

Target

i
Size

132KB
MD5

59ce0baba11893f90527fc951ac69912
SHA1

5857a7dd621c4c3ebb0b5a3bec915d409f70d39f
SHA256

4293c1d8574dc87c58360d6bac3daa182f64f7785c9d41da5e0741d2b1817fc7
SHA512

c5b12797b477e5e5964a78766bb40b1c0d9fdfb8eef1f9aee3df451e3441a40c61d325bf400ba51048811b68e1c70a95f15e4166b7a65a4eca0c624864328647
SSDEEP

3072:phNlHuBafLeBtfCzpta8xlBIOdVo3/4sxLJ10xioP:p3lOYoaja8xzx/0wsxzSi2

Score

9^/10

discovery persistence upx

Malware Config

Signatures

Contacts a large (8694) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046
Modifies the Watchdog daemon 1 TTPs
Malware like Mirai modify the Watchdog to prevent it restarting an infected system.

Impair Defenses
T1562

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

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	Process
Changes the process name, possibly in an attempt to hide itself	dropbear	333	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	i

Modifies init.d 1 TTPs 2 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

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

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 Scanning
T1046

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 2 IoCs

Reads data from /proc virtual filesystem.

description	ioc	Process
File opened for reading	/proc/self/exe	i
File opened for reading	/proc/mounts	Process not Found

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:330

sh
sh -c "killall -9 telnetd utelnetd scfgmgr"
1⤵
PID:334

sh
sh -c "iptables -I INPUT -p tcp --destination-port 50191 -j ACCEPT"
1⤵
- Changes its process name
PID:345
- iptables
  iptables -I INPUT -p tcp --destination-port 50191 -j ACCEPT
  2⤵
  PID:346

sh
sh -c "iptables -I OUTPUT -p tcp --source-port 50191 -j ACCEPT"
1⤵
PID:351
- iptables
  iptables -I OUTPUT -p tcp --source-port 50191 -j ACCEPT
  2⤵
  PID:352

sh
sh -c "iptables -I PREROUTING -t nat -p tcp --destination-port 50191 -j ACCEPT"
1⤵
PID:353
- iptables
  iptables -I PREROUTING -t nat -p tcp --destination-port 50191 -j ACCEPT
  2⤵
  PID:354

sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --source-port 50191 -j ACCEPT"
1⤵
PID:362
- iptables
  iptables -I POSTROUTING -t nat -p tcp --source-port 50191 -j ACCEPT
  2⤵
  PID:363

sh
sh -c "iptables -I INPUT -p tcp --dport 50191 -j ACCEPT"
1⤵
PID:364
- iptables
  iptables -I INPUT -p tcp --dport 50191 -j ACCEPT
  2⤵
  PID:365

sh
sh -c "iptables -I OUTPUT -p tcp --sport 50191 -j ACCEPT"
1⤵
PID:366
- iptables
  iptables -I OUTPUT -p tcp --sport 50191 -j ACCEPT
  2⤵
  PID:367

sh
sh -c "iptables -I PREROUTING -t nat -p tcp --dport 50191 -j ACCEPT"
1⤵
PID:368
- iptables
  iptables -I PREROUTING -t nat -p tcp --dport 50191 -j ACCEPT
  2⤵
  PID:369

sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --sport 50191 -j ACCEPT"
1⤵
PID:370
- iptables
  iptables -I POSTROUTING -t nat -p tcp --sport 50191 -j ACCEPT
  2⤵
  PID:371

sh
sh -c "iptables -I INPUT -p tcp --destination-port 22 -j DROP"
1⤵
PID:372
- iptables
  iptables -I INPUT -p tcp --destination-port 22 -j DROP
  2⤵
  PID:373

sh
sh -c "iptables -I INPUT -p tcp --destination-port 23 -j DROP"
1⤵
PID:374
- iptables
  iptables -I INPUT -p tcp --destination-port 23 -j DROP
  2⤵
  PID:375

sh
sh -c "iptables -I INPUT -p tcp --destination-port 2323 -j DROP"
1⤵
PID:376
- iptables
  iptables -I INPUT -p tcp --destination-port 2323 -j DROP
  2⤵
  PID:377

sh
sh -c "iptables -I OUTPUT -p tcp --source-port 22 -j DROP"
1⤵
PID:378
- iptables
  iptables -I OUTPUT -p tcp --source-port 22 -j DROP
  2⤵
  PID:379

sh
sh -c "iptables -I OUTPUT -p tcp --source-port 23 -j DROP"
1⤵
PID:380
- iptables
  iptables -I OUTPUT -p tcp --source-port 23 -j DROP
  2⤵
  PID:381

sh
sh -c "iptables -I OUTPUT -p tcp --source-port 2323 -j DROP"
1⤵
PID:382
- iptables
  iptables -I OUTPUT -p tcp --source-port 2323 -j DROP
  2⤵
  PID:383

sh
sh -c "iptables -I INPUT -p tcp --dport 22 -j DROP"
1⤵
PID:384
- iptables
  iptables -I INPUT -p tcp --dport 22 -j DROP
  2⤵
  PID:385

sh
sh -c "iptables -I INPUT -p tcp --dport 23 -j DROP"
1⤵
PID:386
- iptables
  iptables -I INPUT -p tcp --dport 23 -j DROP
  2⤵
  PID:387

sh
sh -c "iptables -I INPUT -p tcp --dport 2323 -j DROP"
1⤵
PID:388
- iptables
  iptables -I INPUT -p tcp --dport 2323 -j DROP
  2⤵
  PID:389

sh
sh -c "iptables -I OUTPUT -p tcp --sport 22 -j DROP"
1⤵
PID:390
- iptables
  iptables -I OUTPUT -p tcp --sport 22 -j DROP
  2⤵
  PID:391

sh
sh -c "iptables -I OUTPUT -p tcp --sport 23 -j DROP"
1⤵
PID:392
- iptables
  iptables -I OUTPUT -p tcp --sport 23 -j DROP
  2⤵
  PID:393

sh
sh -c "iptables -I OUTPUT -p tcp --sport 2323 -j DROP"
1⤵
PID:394
- iptables
  iptables -I OUTPUT -p tcp --sport 2323 -j DROP
  2⤵
  PID:395

sh
sh -c "iptables -I INPUT -p tcp --destination-port 58000 -j DROP"
1⤵
PID:396
- iptables
  iptables -I INPUT -p tcp --destination-port 58000 -j DROP
  2⤵
  PID:397

sh
sh -c "iptables -I OUTPUT -p tcp --source-port 58000 -j DROP"
1⤵
PID:398
- iptables
  iptables -I OUTPUT -p tcp --source-port 58000 -j DROP
  2⤵
  PID:399

sh
sh -c "iptables -I INPUT -p tcp --dport 58000 -j DROP"
1⤵
PID:400
- iptables
  iptables -I INPUT -p tcp --dport 58000 -j DROP
  2⤵
  PID:401

sh
sh -c "iptables -I OUTPUT -p tcp --sport 58000 -j DROP"
1⤵
PID:402
- iptables
  iptables -I OUTPUT -p tcp --sport 58000 -j DROP
  2⤵
  PID:403

sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer URL \"http://127.0.0.1\""
1⤵
PID:404

sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer ConnectionRequestPassword \"acsMozi\""
1⤵
PID:405

sh
sh -c "iptables -I INPUT -p tcp --destination-port 35000 -j DROP"
1⤵
PID:406
- iptables
  iptables -I INPUT -p tcp --destination-port 35000 -j DROP
  2⤵
  PID:407

sh
sh -c "iptables -I INPUT -p tcp --destination-port 50023 -j DROP"
1⤵
PID:408
- iptables
  iptables -I INPUT -p tcp --destination-port 50023 -j DROP
  2⤵
  PID:409

sh
sh -c "iptables -I OUTPUT -p tcp --source-port 50023 -j DROP"
1⤵
PID:410
- iptables
  iptables -I OUTPUT -p tcp --source-port 50023 -j DROP
  2⤵
  PID:411

sh
sh -c "iptables -I OUTPUT -p tcp --source-port 35000 -j DROP"
1⤵
PID:412
- iptables
  iptables -I OUTPUT -p tcp --source-port 35000 -j DROP
  2⤵
  PID:413

sh
sh -c "iptables -I INPUT -p tcp --destination-port 7547 -j DROP"
1⤵
PID:414
- iptables
  iptables -I INPUT -p tcp --destination-port 7547 -j DROP
  2⤵
  PID:415

sh
sh -c "iptables -I OUTPUT -p tcp --source-port 7547 -j DROP"
1⤵
PID:416
- iptables
  iptables -I OUTPUT -p tcp --source-port 7547 -j DROP
  2⤵
  PID:417

sh
sh -c "iptables -I INPUT -p tcp --dport 35000 -j DROP"
1⤵
PID:418
- iptables
  iptables -I INPUT -p tcp --dport 35000 -j DROP
  2⤵
  PID:419

sh
sh -c "iptables -I INPUT -p tcp --dport 50023 -j DROP"
1⤵
PID:420
- iptables
  iptables -I INPUT -p tcp --dport 50023 -j DROP
  2⤵
  PID:421

sh
sh -c "iptables -I OUTPUT -p tcp --sport 50023 -j DROP"
1⤵
PID:422
- iptables
  iptables -I OUTPUT -p tcp --sport 50023 -j DROP
  2⤵
  PID:423

sh
sh -c "iptables -I OUTPUT -p tcp --sport 35000 -j DROP"
1⤵
PID:424
- iptables
  iptables -I OUTPUT -p tcp --sport 35000 -j DROP
  2⤵
  PID:425

sh
sh -c "iptables -I INPUT -p tcp --dport 7547 -j DROP"
1⤵
PID:426
- iptables
  iptables -I INPUT -p tcp --dport 7547 -j DROP
  2⤵
  PID:427

sh
sh -c "iptables -I OUTPUT -p tcp --sport 7547 -j DROP"
1⤵
PID:428
- iptables
  iptables -I OUTPUT -p tcp --sport 7547 -j DROP
  2⤵
  PID:429

sh
sh -c "iptables -I INPUT -p udp --destination-port 30301 -j ACCEPT"
1⤵
PID:434
- iptables
  iptables -I INPUT -p udp --destination-port 30301 -j ACCEPT
  2⤵
  PID:435

sh
sh -c "iptables -I OUTPUT -p udp --source-port 30301 -j ACCEPT"
1⤵
PID:436
- iptables
  iptables -I OUTPUT -p udp --source-port 30301 -j ACCEPT
  2⤵
  PID:437

sh
sh -c "iptables -I PREROUTING -t nat -p udp --destination-port 30301 -j ACCEPT"
1⤵
PID:438
- iptables
  iptables -I PREROUTING -t nat -p udp --destination-port 30301 -j ACCEPT
  2⤵
  PID:439

sh
sh -c "iptables -I POSTROUTING -t nat -p udp --source-port 30301 -j ACCEPT"
1⤵
PID:440
- iptables
  iptables -I POSTROUTING -t nat -p udp --source-port 30301 -j ACCEPT
  2⤵
  PID:441

sh
sh -c "iptables -I INPUT -p udp --dport 30301 -j ACCEPT"
1⤵
PID:442
- iptables
  iptables -I INPUT -p udp --dport 30301 -j ACCEPT
  2⤵
  PID:444

sh
sh -c "iptables -I OUTPUT -p udp --sport 30301 -j ACCEPT"
1⤵
PID:445
- iptables
  iptables -I OUTPUT -p udp --sport 30301 -j ACCEPT
  2⤵
  PID:446

sh
sh -c "iptables -I PREROUTING -t nat -p udp --dport 30301 -j ACCEPT"
1⤵
PID:447
- iptables
  iptables -I PREROUTING -t nat -p udp --dport 30301 -j ACCEPT
  2⤵
  PID:448

sh
sh -c "iptables -I POSTROUTING -t nat -p udp --sport 30301 -j ACCEPT"
1⤵
PID:449
- iptables
  iptables -I POSTROUTING -t nat -p udp --sport 30301 -j ACCEPT
  2⤵
  PID:450

Network

MITRE ATT&CK Enterprise v6

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 Scanning

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
147B

MD5
b8a8f466da2abb274b5da8a184d10172

SHA1
2444c38c3462702bf815cf4e37100214824b76e6

SHA256
74c9b3a712c3e883f3d0181d64bb83d4aa02f1619615f4f584441e4ae4de0936

SHA512
33dfaaae402915c324acb901a94deac1c6f4b2773bdd9fc5e61fed5fd848570a699abcf3f178f8c2b2bdf527dd10a40edaefbe43b94f6e2f1d8e69ebd681768f

Download Submit
/usr/networks

Filesize
132KB

MD5
59ce0baba11893f90527fc951ac69912

SHA1
5857a7dd621c4c3ebb0b5a3bec915d409f70d39f

SHA256
4293c1d8574dc87c58360d6bac3daa182f64f7785c9d41da5e0741d2b1817fc7

SHA512
c5b12797b477e5e5964a78766bb40b1c0d9fdfb8eef1f9aee3df451e3441a40c61d325bf400ba51048811b68e1c70a95f15e4166b7a65a4eca0c624864328647

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads