b5cf68c7cb5bb2d21d60bf6654926f61566d95bfd7c9f9e182d032f1da5b4605

General

Target

bin.sh
Size

132KB
MD5

a73ddd6ec22462db955439f665cad4e6
SHA1

ac6962542a4b23ac13bddff22f8df9aeb702ef12
SHA256

b5cf68c7cb5bb2d21d60bf6654926f61566d95bfd7c9f9e182d032f1da5b4605
SHA512

92a52f68a7324c4d5876e1f7e2cb87d14b8604b057ceee2e537815568faa96abf576a22111c5c976eff72ab9015f1261b2331d4b4d711f4e62c8eb403c2377aa
SSDEEP

3072:2glZ3FtCKXhkmHtZ9TEKzjfj/WMngyIfsJ0F7xPtoM:2IIKXhZtL7jOTyIG87Xl

Score

9^/10

discovery persistence upx

Malware Config

Signatures

Contacts a large (7074) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
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.

Processes:

resource yara_rule

/usr/networks patched_upx
Changes its process name 1 IoCs

Processes:

sh

description ioc pid process

Changes the process name, possibly in an attempt to hide itself dropbear 326 sh
Modifies Watchdog functionality 1 TTPs 2 IoCs
Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.

Impair Defenses
T1562

Processes:

description ioc

File opened for modification /dev/misc/watchdog
File opened for modification /dev/watchdog
UPX packed file 1 IoCs
Detects executables packed with UPX/modified UPX open source packer.
upx

Processes:

resource yara_rule

/usr/networks 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
Enumerates active TCP sockets 1 TTPs 1 IoCs
Gets active TCP sockets from /proc virtual filesystem.

System Network Connections Discovery
T1049

Processes:

bin.sh

description ioc process

File opened for reading /proc/net/tcp bin.sh
Modifies init.d 1 TTPs 2 IoCs
Adds/modifies system service, likely for persistence.
persistence

Boot or Logon Autostart Execution
T1547

Processes:

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

Processes:

description ioc

File opened for reading /proc/net/route
Writes file to system bin folder 1 TTPs 2 IoCs

Hijack Execution Flow
T1574

Processes:

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

Processes:

bin.sh

description ioc process

File opened for reading /proc/net/raw bin.sh
File opened for reading /proc/net/route
File opened for reading /proc/net/tcp bin.sh
Reads runtime system information 2 IoCs
Reads data from /proc virtual filesystem.

Processes:

bin.sh

description ioc process

File opened for reading /proc/self/exe bin.sh
File opened for reading /proc/mounts
Writes file to tmp directory 1 IoCs
Malware often drops required files in the /tmp directory.

Processes:

bin.sh

description ioc process

File opened for modification /tmp/.ips bin.sh

resource	yara_rule
/usr/networks	patched_upx

description	ioc	pid	process
Changes the process name, possibly in an attempt to hide itself	dropbear	326	sh

description	ioc
File opened for modification	/dev/misc/watchdog
File opened for modification	/dev/watchdog

resource	yara_rule
/usr/networks	upx

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

description	ioc
File opened for modification	/etc/init.d/S95baby.sh
File opened for modification	/etc/init.d/hwclock.sh

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

description	ioc
File opened for modification	/sbin/watchdog
File opened for modification	/bin/watchdog

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

description	ioc	process
File opened for reading	/proc/self/exe	bin.sh
File opened for reading	/proc/mounts

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

/tmp/bin.sh
/tmp/bin.sh
1⤵
- Enumerates active TCP sockets
- Reads system network configuration
- Reads runtime system information
- Writes file to tmp directory
PID:324

/bin/sh
sh -c "killall -9 telnetd utelnetd scfgmgr"
1⤵
PID:327

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 47487 -j ACCEPT"
1⤵
- Changes its process name
PID:338
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 47487 -j ACCEPT
  2⤵
  PID:339

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 47487 -j ACCEPT"
1⤵
PID:344
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 47487 -j ACCEPT
  2⤵
  PID:345

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p tcp --destination-port 47487 -j ACCEPT"
1⤵
PID:346
- /sbin/iptables
  iptables -I PREROUTING -t nat -p tcp --destination-port 47487 -j ACCEPT
  2⤵
  PID:347

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --source-port 47487 -j ACCEPT"
1⤵
PID:357
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p tcp --source-port 47487 -j ACCEPT
  2⤵
  PID:358

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 47487 -j ACCEPT"
1⤵
PID:359
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 47487 -j ACCEPT
  2⤵
  PID:360

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 47487 -j ACCEPT"
1⤵
PID:361
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 47487 -j ACCEPT
  2⤵
  PID:362

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 22 -j DROP"
1⤵
PID:363
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 22 -j DROP
  2⤵
  PID:364

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p tcp --dport 47487 -j ACCEPT"
1⤵
PID:365
- /sbin/iptables
  iptables -I PREROUTING -t nat -p tcp --dport 47487 -j ACCEPT
  2⤵
  PID:366

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 23 -j DROP"
1⤵
PID:367
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 23 -j DROP
  2⤵
  PID:368

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --sport 47487 -j ACCEPT"
1⤵
PID:369
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p tcp --sport 47487 -j ACCEPT
  2⤵
  PID:370

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 2323 -j DROP"
1⤵
PID:371
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 2323 -j DROP
  2⤵
  PID:372

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 22 -j DROP"
1⤵
PID:373
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 22 -j DROP
  2⤵
  PID:374

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 23 -j DROP"
1⤵
PID:375
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 23 -j DROP
  2⤵
  PID:376

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 2323 -j DROP"
1⤵
PID:377
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 2323 -j DROP
  2⤵
  PID:378

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 22 -j DROP"
1⤵
PID:379
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 22 -j DROP
  2⤵
  PID:380

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 23 -j DROP"
1⤵
PID:381
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 23 -j DROP
  2⤵
  PID:382

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 2323 -j DROP"
1⤵
PID:383
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 2323 -j DROP
  2⤵
  PID:384

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 22 -j DROP"
1⤵
PID:385
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 22 -j DROP
  2⤵
  PID:386

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 23 -j DROP"
1⤵
PID:387
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 23 -j DROP
  2⤵
  PID:388

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 2323 -j DROP"
1⤵
PID:389
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 2323 -j DROP
  2⤵
  PID:390

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 58000 -j DROP"
1⤵
PID:391
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 58000 -j DROP
  2⤵
  PID:395

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 58000 -j DROP"
1⤵
PID:396
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 58000 -j DROP
  2⤵
  PID:397

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 58000 -j DROP"
1⤵
PID:398
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 58000 -j DROP
  2⤵
  PID:399

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 58000 -j DROP"
1⤵
PID:400
- /sbin/iptables
  iptables -I OUTPUT -p tcp --sport 58000 -j DROP
  2⤵
  PID:401

/bin/sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer URL \"http://127.0.0.1\""
1⤵
PID:403

/bin/sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer ConnectionRequestPassword \"acsMozi\""
1⤵
PID:404

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 35000 -j DROP"
1⤵
PID:405
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 35000 -j DROP
  2⤵
  PID:406

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 50023 -j DROP"
1⤵
PID:407
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 50023 -j DROP
  2⤵
  PID:408

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 50023 -j DROP"
1⤵
PID:409
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 50023 -j DROP
  2⤵
  PID:410

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 35000 -j DROP"
1⤵
PID:411
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 35000 -j DROP
  2⤵
  PID:412

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 7547 -j DROP"
1⤵
PID:413
- /sbin/iptables
  iptables -I INPUT -p tcp --destination-port 7547 -j DROP
  2⤵
  PID:414

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 7547 -j DROP"
1⤵
PID:415
- /sbin/iptables
  iptables -I OUTPUT -p tcp --source-port 7547 -j DROP
  2⤵
  PID:416

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 35000 -j DROP"
1⤵
PID:417
- /sbin/iptables
  iptables -I INPUT -p tcp --dport 35000 -j DROP
  2⤵
  PID:418

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

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

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

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

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

/bin/sh
sh -c "iptables -I INPUT -p udp --destination-port 8082 -j ACCEPT"
1⤵
PID:430
- /sbin/iptables
  iptables -I INPUT -p udp --destination-port 8082 -j ACCEPT
  2⤵
  PID:431

/bin/sh
sh -c "iptables -I OUTPUT -p udp --source-port 8082 -j ACCEPT"
1⤵
PID:432
- /sbin/iptables
  iptables -I OUTPUT -p udp --source-port 8082 -j ACCEPT
  2⤵
  PID:433

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p udp --destination-port 8082 -j ACCEPT"
1⤵
PID:434
- /sbin/iptables
  iptables -I PREROUTING -t nat -p udp --destination-port 8082 -j ACCEPT
  2⤵
  PID:435

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p udp --source-port 8082 -j ACCEPT"
1⤵
PID:436
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p udp --source-port 8082 -j ACCEPT
  2⤵
  PID:437

/bin/sh
sh -c "iptables -I INPUT -p udp --dport 8082 -j ACCEPT"
1⤵
PID:438
- /sbin/iptables
  iptables -I INPUT -p udp --dport 8082 -j ACCEPT
  2⤵
  PID:439

/bin/sh
sh -c "iptables -I OUTPUT -p udp --sport 8082 -j ACCEPT"
1⤵
PID:440
- /sbin/iptables
  iptables -I OUTPUT -p udp --sport 8082 -j ACCEPT
  2⤵
  PID:441

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p udp --dport 8082 -j ACCEPT"
1⤵
PID:442
- /sbin/iptables
  iptables -I PREROUTING -t nat -p udp --dport 8082 -j ACCEPT
  2⤵
  PID:443

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p udp --sport 8082 -j ACCEPT"
1⤵
PID:444
- /sbin/iptables
  iptables -I POSTROUTING -t nat -p udp --sport 8082 -j ACCEPT
  2⤵
  PID:445

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Hijack Execution Flow

1

T1574

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Hijack Execution Flow

1

T1574

Defense Evasion

Hijack Execution Flow

Impair Defenses

Credential Access

Discovery

Network Service Scanning

2

T1046

System Network Configuration Discovery

2

T1016

System Network Connections Discovery

1

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

Download Submit
/usr/networks

Filesize
132KB

MD5
a73ddd6ec22462db955439f665cad4e6

SHA1
ac6962542a4b23ac13bddff22f8df9aeb702ef12

SHA256
b5cf68c7cb5bb2d21d60bf6654926f61566d95bfd7c9f9e182d032f1da5b4605

SHA512
92a52f68a7324c4d5876e1f7e2cb87d14b8604b057ceee2e537815568faa96abf576a22111c5c976eff72ab9015f1261b2331d4b4d711f4e62c8eb403c2377aa

Download Submit
memory/324-1-0x00400000-0x004c1f18-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads