f6c97b1e2ed02578ca1066c8235ba4f991e645f89012406c639dbccc6582eec8

General

Target

bin.sh
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 (10240) 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.

Processes:

resource yara_rule

/usr/networks patched_upx
Changes its process name 1 IoCs

Processes:

description ioc pid

Changes the process name, possibly in an attempt to hide itself dropbear 348
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/watchdog
File opened for modification /dev/misc/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 Discovery
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/tcp bin.sh
File opened for reading /proc/net/raw bin.sh
File opened for reading /proc/net/route
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 2 IoCs
Malware often drops required files in the /tmp directory.

Processes:

bin.sh

description ioc process

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

resource	yara_rule
/usr/networks	patched_upx

description	ioc	pid
Changes the process name, possibly in an attempt to hide itself	dropbear	348

description	ioc
File opened for modification	/dev/watchdog
File opened for modification	/dev/misc/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/tcp	bin.sh
File opened for reading	/proc/net/raw	bin.sh
File opened for reading	/proc/net/route

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
File opened for modification	/tmp/.config

/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:345

/bin/sh
sh -c "killall -9 telnetd utelnetd scfgmgr"
1⤵
PID:349

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 52961 -j ACCEPT"
1⤵
PID:360

/sbin/iptables
iptables -I INPUT -p tcp --destination-port 52961 -j ACCEPT
2⤵
PID:361

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 52961 -j ACCEPT"
1⤵
PID:367

/sbin/iptables
iptables -I OUTPUT -p tcp --source-port 52961 -j ACCEPT
2⤵
PID:369

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 22 -j DROP"
1⤵
PID:370

/sbin/iptables
iptables -I INPUT -p tcp --destination-port 22 -j DROP
2⤵
PID:372

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p tcp --destination-port 52961 -j ACCEPT"
1⤵
PID:371

/sbin/iptables
iptables -I PREROUTING -t nat -p tcp --destination-port 52961 -j ACCEPT
2⤵
PID:373

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

/sbin/iptables
iptables -I INPUT -p tcp --destination-port 23 -j DROP
2⤵
PID:376

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --source-port 52961 -j ACCEPT"
1⤵
PID:384

/sbin/iptables
iptables -I POSTROUTING -t nat -p tcp --source-port 52961 -j ACCEPT
2⤵
PID:385

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 2323 -j DROP"
1⤵
PID:386

/sbin/iptables
iptables -I INPUT -p tcp --destination-port 2323 -j DROP
2⤵
PID:387

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 52961 -j ACCEPT"
1⤵
PID:388

/sbin/iptables
iptables -I INPUT -p tcp --dport 52961 -j ACCEPT
2⤵
PID:389

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 22 -j DROP"
1⤵
PID:390

/sbin/iptables
iptables -I OUTPUT -p tcp --source-port 22 -j DROP
2⤵
PID:391

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 52961 -j ACCEPT"
1⤵
PID:392

/sbin/iptables
iptables -I OUTPUT -p tcp --sport 52961 -j ACCEPT
2⤵
PID:393

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 23 -j DROP"
1⤵
PID:394

/sbin/iptables
iptables -I OUTPUT -p tcp --source-port 23 -j DROP
2⤵
PID:395

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p tcp --dport 52961 -j ACCEPT"
1⤵
PID:399

/sbin/iptables
iptables -I PREROUTING -t nat -p tcp --dport 52961 -j ACCEPT
2⤵
PID:400

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 2323 -j DROP"
1⤵
PID:401

/sbin/iptables
iptables -I OUTPUT -p tcp --source-port 2323 -j DROP
2⤵
PID:402

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p tcp --sport 52961 -j ACCEPT"
1⤵
PID:403

/sbin/iptables
iptables -I POSTROUTING -t nat -p tcp --sport 52961 -j ACCEPT
2⤵
PID:404

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 22 -j DROP"
1⤵
PID:405

/sbin/iptables
iptables -I INPUT -p tcp --dport 22 -j DROP
2⤵
PID:406

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 23 -j DROP"
1⤵
PID:407

/sbin/iptables
iptables -I INPUT -p tcp --dport 23 -j DROP
2⤵
PID:408

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 2323 -j DROP"
1⤵
PID:409

/sbin/iptables
iptables -I INPUT -p tcp --dport 2323 -j DROP
2⤵
PID:410

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 22 -j DROP"
1⤵
PID:411

/sbin/iptables
iptables -I OUTPUT -p tcp --sport 22 -j DROP
2⤵
PID:412

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 23 -j DROP"
1⤵
PID:413

/sbin/iptables
iptables -I OUTPUT -p tcp --sport 23 -j DROP
2⤵
PID:414

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 2323 -j DROP"
1⤵
PID:415

/sbin/iptables
iptables -I OUTPUT -p tcp --sport 2323 -j DROP
2⤵
PID:416

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 58000 -j DROP"
1⤵
PID:417

/sbin/iptables
iptables -I INPUT -p tcp --destination-port 58000 -j DROP
2⤵
PID:419

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 58000 -j DROP"
1⤵
PID:420

/sbin/iptables
iptables -I OUTPUT -p tcp --source-port 58000 -j DROP
2⤵
PID:421

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 58000 -j DROP"
1⤵
PID:422

/sbin/iptables
iptables -I INPUT -p tcp --dport 58000 -j DROP
2⤵
PID:423

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 58000 -j DROP"
1⤵
PID:424

/sbin/iptables
iptables -I OUTPUT -p tcp --sport 58000 -j DROP
2⤵
PID:425

/bin/sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer URL \"http://127.0.0.1\""
1⤵
PID:426

/bin/sh
sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer ConnectionRequestPassword \"acsMozi\""
1⤵
PID:427

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 35000 -j DROP"
1⤵
PID:428

/sbin/iptables
iptables -I INPUT -p tcp --destination-port 35000 -j DROP
2⤵
PID:429

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 50023 -j DROP"
1⤵
PID:430

/sbin/iptables
iptables -I INPUT -p tcp --destination-port 50023 -j DROP
2⤵
PID:431

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 50023 -j DROP"
1⤵
PID:432

/sbin/iptables
iptables -I OUTPUT -p tcp --source-port 50023 -j DROP
2⤵
PID:433

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 35000 -j DROP"
1⤵
PID:435

/sbin/iptables
iptables -I OUTPUT -p tcp --source-port 35000 -j DROP
2⤵
PID:436

/bin/sh
sh -c "iptables -I INPUT -p tcp --destination-port 7547 -j DROP"
1⤵
PID:437

/sbin/iptables
iptables -I INPUT -p tcp --destination-port 7547 -j DROP
2⤵
PID:439

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --source-port 7547 -j DROP"
1⤵
PID:440

/sbin/iptables
iptables -I OUTPUT -p tcp --source-port 7547 -j DROP
2⤵
PID:441

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 35000 -j DROP"
1⤵
PID:442

/sbin/iptables
iptables -I INPUT -p tcp --dport 35000 -j DROP
2⤵
PID:443

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 50023 -j DROP"
1⤵
PID:444

/sbin/iptables
iptables -I INPUT -p tcp --dport 50023 -j DROP
2⤵
PID:445

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 50023 -j DROP"
1⤵
PID:446

/sbin/iptables
iptables -I OUTPUT -p tcp --sport 50023 -j DROP
2⤵
PID:447

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 35000 -j DROP"
1⤵
PID:448

/sbin/iptables
iptables -I OUTPUT -p tcp --sport 35000 -j DROP
2⤵
PID:449

/bin/sh
sh -c "iptables -I INPUT -p tcp --dport 7547 -j DROP"
1⤵
PID:450

/sbin/iptables
iptables -I INPUT -p tcp --dport 7547 -j DROP
2⤵
PID:451

/bin/sh
sh -c "iptables -I OUTPUT -p tcp --sport 7547 -j DROP"
1⤵
PID:452

/sbin/iptables
iptables -I OUTPUT -p tcp --sport 7547 -j DROP
2⤵
PID:453

/bin/sh
sh -c "iptables -I INPUT -p udp --destination-port 8000 -j ACCEPT"
1⤵
PID:454

/sbin/iptables
iptables -I INPUT -p udp --destination-port 8000 -j ACCEPT
2⤵
PID:455

/bin/sh
sh -c "iptables -I OUTPUT -p udp --source-port 8000 -j ACCEPT"
1⤵
PID:456

/sbin/iptables
iptables -I OUTPUT -p udp --source-port 8000 -j ACCEPT
2⤵
PID:457

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p udp --destination-port 8000 -j ACCEPT"
1⤵
PID:458

/sbin/iptables
iptables -I PREROUTING -t nat -p udp --destination-port 8000 -j ACCEPT
2⤵
PID:459

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p udp --source-port 8000 -j ACCEPT"
1⤵
PID:460

/sbin/iptables
iptables -I POSTROUTING -t nat -p udp --source-port 8000 -j ACCEPT
2⤵
PID:461

/bin/sh
sh -c "iptables -I INPUT -p udp --dport 8000 -j ACCEPT"
1⤵
PID:462

/sbin/iptables
iptables -I INPUT -p udp --dport 8000 -j ACCEPT
2⤵
PID:463

/bin/sh
sh -c "iptables -I OUTPUT -p udp --sport 8000 -j ACCEPT"
1⤵
PID:464

/sbin/iptables
iptables -I OUTPUT -p udp --sport 8000 -j ACCEPT
2⤵
PID:465

/bin/sh
sh -c "iptables -I PREROUTING -t nat -p udp --dport 8000 -j ACCEPT"
1⤵
PID:466

/sbin/iptables
iptables -I PREROUTING -t nat -p udp --dport 8000 -j ACCEPT
2⤵
PID:467

/bin/sh
sh -c "iptables -I POSTROUTING -t nat -p udp --sport 8000 -j ACCEPT"
1⤵
PID:468

/sbin/iptables
iptables -I POSTROUTING -t nat -p udp --sport 8000 -j ACCEPT
2⤵
PID:469

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Impair Defenses

1

T1562

Hijack Execution Flow

1

T1574

Credential Access

Discovery

Network Service Discovery

2

T1046

System Network Connections Discovery

1

T1049

System Network Configuration Discovery

2

T1016

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

/etc/rcS.d/S95baby.sh
Filesize
25B

MD5
1b3235ba10fc04836c941d3d27301956

SHA1
8909655763143702430b8c58b3ae3b04cfd3a29c

SHA256
01ba1fb41632594997a41d0c3a911ae5b3034d566ebb991ef76ad76e6f9e283a

SHA512
98bdb5c266222ccbd63b6f80c87e501c8033dc53b0513d300b8da50e39a207a0b69f8cd3ecc4a128dec340a1186779fedd1049c9b0a70e90d2cb3ae6ebfa4c4d

Download Submit
/tmp/.config
Filesize
140B

MD5
457412db2275c971a2f32aef0c05f0ef

SHA1
81634d651b7bd25434966cb91dd5f1f1683ae363

SHA256
348a557ecef7585e315fa04bea4a179b715c795993ca331fbaf3677c79e0be5e

SHA512
4bf11f480c43a51666b8ddb335c59159c142299995ef5aad0cabe266e9652482f3032759150d6c467494ac10e7210976a935b61642cb214a438be016a7244a2c

Download Submit
/usr/networks
Filesize
134KB

MD5
3849f30b51a5c49e8d1546960cc206c7

SHA1
61c74136534b826059c63221a2373dc0613a47b7

SHA256
f6c97b1e2ed02578ca1066c8235ba4f991e645f89012406c639dbccc6582eec8

SHA512
43d79293d1fbf716111c27e50df95a0860a0d706079625fa2b8a6b57c5ee06fa7b5b6b8c0acae33714a2181686426728513c990534e44b6f03a05dde0629ab86

Download Submit
memory/345-1-0x00400000-0x004c2f18-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads