572c52bc6a42d6aba552f4cf859e570123d9377af68054f884425a7f6e442600

General

Target

a04ac6d98ad989312783d4fe3456c53730b212c79a426fb215708b6c6daa3de3.elf
Size

78KB
MD5

9b6c3518a91d23ed77504b5416bfb5b3
SHA1

0a2d170abbf5031566377b01431e3b82d342630a
SHA256

a04ac6d98ad989312783d4fe3456c53730b212c79a426fb215708b6c6daa3de3
SHA512

b2b08d5d5e6c6708d88b793e9340a780d47b5dce61e0a3026b4cdea8a9e4cbf9824037255e4ea4a40fee5bce956485232376d4677ce72ccb6c7f00badd09956e
SSDEEP

1536:87vbq1lGAXSEYQjbChaAU2yU23M51DjZgSQAvcYkFtZTjzBht5:8D+CAXFYQChaAUk5ljnQssL

Score

9^/10

Malware Config

Signatures

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

Impair Defenses
T1562
Modifies hosts file 1 IoCs
Adds to hosts file used for mapping hosts to IP addresses.

Processes:

description ioc

/etc/hosts /etc/hosts
Writes DNS configuration 1 TTPs 1 IoCs
Writes data to DNS resolver config file.

Dynamic Resolution
T1568

Processes:

description ioc

/etc/resolv.conf /etc/resolv.conf
Enumerates active TCP sockets 1 TTPs 1 IoCs
Gets active TCP sockets from /proc virtual filesystem.

System Network Connections Discovery
T1049

Processes:

description ioc

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

System Network Configuration Discovery
T1016

Processes:

a04ac6d98ad989312783d4fe3456c53730b212c79a426fb215708b6c6daa3de3.elf

description ioc process

/proc/net/route /proc/net/route a04ac6d98ad989312783d4fe3456c53730b212c79a426fb215708b6c6daa3de3.elf

description	ioc
/etc/hosts	/etc/hosts

description	ioc
/etc/resolv.conf	/etc/resolv.conf

description	ioc
/proc/net/tcp	/proc/net/tcp

Reads system network configuration 1 TTPs 3 IoCs

Uses contents of /proc filesystem to enumerate network settings.

System Network Configuration Discovery

T1016

Processes:

a04ac6d98ad989312783d4fe3456c53730b212c79a426fb215708b6c6daa3de3.elf

description	ioc	process
/proc/net/route	/proc/net/route	a04ac6d98ad989312783d4fe3456c53730b212c79a426fb215708b6c6daa3de3.elf
/proc/net/tcp	/proc/net/tcp
/proc/net/tcp6	/proc/net/tcp6

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

Processes:

description	ioc
/proc/3/cmdline	/proc/3/cmdline
/proc/307/cmdline	/proc/307/cmdline
/proc/164/fd	/proc/164/fd
/proc/106/cmdline	/proc/106/cmdline
/proc/27/cmdline	/proc/27/cmdline
/proc/20/cmdline	/proc/20/cmdline
/proc/14/cmdline	/proc/14/cmdline
/proc/11/cmdline	/proc/11/cmdline
/proc/8/cmdline	/proc/8/cmdline
/proc/275/cmdline	/proc/275/cmdline
/proc/230/cmdline	/proc/230/cmdline
/proc/131/cmdline	/proc/131/cmdline
/proc/23/cmdline	/proc/23/cmdline
/proc/5/cmdline	/proc/5/cmdline
/proc/348/fd	/proc/348/fd
/proc/306/cmdline	/proc/306/cmdline
/proc/6/cmdline	/proc/6/cmdline
/proc/233/cmdline	/proc/233/cmdline
/proc/42/cmdline	/proc/42/cmdline
/proc/225/cmdline	/proc/225/cmdline
/proc/105/cmdline	/proc/105/cmdline
/proc/26/cmdline	/proc/26/cmdline
/proc/307/fd	/proc/307/fd
/proc/276/fd	/proc/276/fd
/proc/43/cmdline	/proc/43/cmdline
/proc/28/cmdline	/proc/28/cmdline
/proc/15/cmdline	/proc/15/cmdline
/proc/233/fd	/proc/233/fd
/proc/230/fd	/proc/230/fd
/proc/132/cmdline	/proc/132/cmdline
/proc/19/cmdline	/proc/19/cmdline
/proc/347/fd	/proc/347/fd
/proc/271/fd	/proc/271/fd
/proc/1/fd	/proc/1/fd
/proc/207/fd	/proc/207/fd
/proc/95/cmdline	/proc/95/cmdline
/proc/2/cmdline	/proc/2/cmdline
/proc/301/cmdline	/proc/301/cmdline
/proc/301/fd	/proc/301/fd
/proc/17/cmdline	/proc/17/cmdline
/proc/349/cmdline	/proc/349/cmdline
/proc/164/cmdline	/proc/164/cmdline
/proc/144/cmdline	/proc/144/cmdline
/proc/41/cmdline	/proc/41/cmdline
/proc/25/cmdline	/proc/25/cmdline
/proc/7/cmdline	/proc/7/cmdline
/proc/4/cmdline	/proc/4/cmdline
/proc/228/fd	/proc/228/fd
/proc/207/cmdline	/proc/207/cmdline
/proc/276/cmdline	/proc/276/cmdline
/proc/275/fd	/proc/275/fd
/proc/225/fd	/proc/225/fd
/proc/131/fd	/proc/131/fd
/proc/29/cmdline	/proc/29/cmdline
/proc/24/cmdline	/proc/24/cmdline
/proc/348/cmdline	/proc/348/cmdline
/proc/304/fd	/proc/304/fd
/proc/13/cmdline	/proc/13/cmdline
/proc/12/cmdline	/proc/12/cmdline
/proc/103/cmdline	/proc/103/cmdline
/proc/22/cmdline	/proc/22/cmdline
/proc/21/cmdline	/proc/21/cmdline
/proc/16/cmdline	/proc/16/cmdline
/proc/343/cmdline	/proc/343/cmdline

Writes file to tmp directory 3 IoCs

Malware often drops required files in the /tmp directory.

Processes:

description	ioc
/tmp/a04ac6d98ad989312783d4fe3456c53730b212c79a426fb215708b6c6daa3de3.elf	/tmp/a04ac6d98ad989312783d4fe3456c53730b212c79a426fb215708b6c6daa3de3.elf
/tmp/ftpupdate.sh	/tmp/ftpupdate.sh
/tmp/ftpupload.sh	/tmp/ftpupload.sh

/tmp/a04ac6d98ad989312783d4fe3456c53730b212c79a426fb215708b6c6daa3de3.elf
/tmp/a04ac6d98ad989312783d4fe3456c53730b212c79a426fb215708b6c6daa3de3.elf
1⤵
- Reads system routing table
- Reads system network configuration
PID:345

/bin/sh
/bin/sh -c "iptables -A INPUT -p tcp --destination-port 23 -j DROP"
1⤵
PID:353
- /sbin/iptables
  iptables -A INPUT -p tcp --destination-port 23 -j DROP
  2⤵
  PID:354

/bin/sh
/bin/sh -c "iptables -A INPUT -p tcp --destination-port 7547 -j DROP"
1⤵
PID:359
- /sbin/iptables
  iptables -A INPUT -p tcp --destination-port 7547 -j DROP
  2⤵
  PID:360

/bin/sh
/bin/sh -c "iptables -A INPUT -p tcp --destination-port 5555 -j DROP"
1⤵
PID:361
- /sbin/iptables
  iptables -A INPUT -p tcp --destination-port 5555 -j DROP
  2⤵
  PID:362

/bin/sh
/bin/sh -c "iptables -A INPUT -p tcp --destination-port 5358 -j DROP"
1⤵
PID:363
- /sbin/iptables
  iptables -A INPUT -p tcp --destination-port 5358 -j DROP
  2⤵
  PID:364

/bin/sh
/bin/sh -c "iptables -D INPUT -j CWMP_CR"
1⤵
PID:365
- /sbin/iptables
  iptables -D INPUT -j CWMP_CR
  2⤵
  PID:366

/bin/sh
/bin/sh -c "iptables -X CWMP_CR"
1⤵
PID:367
- /sbin/iptables
  iptables -X CWMP_CR
  2⤵
  PID:368

/bin/sh
/bin/sh -c "iptables -I INPUT -p udp --dport 60018 -j ACCEPT"
1⤵
PID:369
- /sbin/iptables
  iptables -I INPUT -p udp --dport 60018 -j ACCEPT
  2⤵
  PID:370