76021dd25cb21b31b81a43428ebd18640d0598c8afeefc502c7a2ab660de8df5

Analysis

max time kernel
4s
platform
debian-9_armhf
resource
debian9-armhf-20240418-en
resource tags

arch:armhfimage:debian9-armhf-20240418-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
submitted
17-07-2024 10:23

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General

Target

52940d065af4faae2c6f6a289040bb72_JaffaCakes118
Size

30KB
MD5

52940d065af4faae2c6f6a289040bb72
SHA1

005bafac97f4734cfc8c5d4f14e231df11f4d73a
SHA256

76021dd25cb21b31b81a43428ebd18640d0598c8afeefc502c7a2ab660de8df5
SHA512

ad31d4768c1bd18fe34548cc76a617abe480bbdc244abaa09049654d177984102496842a98ca94903a4db89a708519ddab7d1fc39e08e4979c33737be976de2d
SSDEEP

384:p7pQBDf6jlpTWg3vMGQiirhHwMyGj4CC9vEKMvU/4Qdre21jT58vKpG2Y0orcfKU:p78zQ5VFNcDAFLcIwgnoYq0xFBVdHtDn

Score

7^/10

evasion

Malware Config

Signatures

Deletes system logs 1 TTPs 1 IoCs

Deletes log file which contains global system messages. Adversaries may delete system logs to minimize their footprint.

evasion

Indicator Removal

T1070

description	ioc	Process
File deleted	/var/log/syslog	rm

Flushes firewall rules 1 IoCs

Flushes/ disables firewall rules inside the Linux kernel.

pid	Process
657	iptables

Attempts to change immutable files 17 IoCs

Modifies inode attributes on the filesystem to allow changing of immutable files.

pid	Process
737	xargs
743	xargs
651	chattr
676	chattr
725	xargs
688	grep
695	xargs
713	xargs
647	chattr
655	chattr
684	grep
731	xargs
653	chattr
700	xargs
707	xargs
677	chattr
719	xargs

Enumerates running processes
Discovers information about currently running processes on the system

Reads CPU attributes 1 TTPs 2 IoCs

System Information Discovery

T1082

description	ioc	Process
File opened for reading	/sys/devices/system/cpu/online	ps
File opened for reading	/sys/devices/system/cpu/online	ps

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

description	ioc	Process
File opened for reading	/proc/112/cmdline	ps
File opened for reading	/proc/304/status	ps
File opened for reading	/proc/642/status	ps
File opened for reading	/proc/11/status	ps
File opened for reading	/proc/81/cmdline	ps
File opened for reading	/proc/308/status	ps
File opened for reading	/proc/674/stat	ps
File opened for reading	/proc/21/stat	ps
File opened for reading	/proc/642/status	ps
File opened for reading	/proc/308/status	ps
File opened for reading	/proc/646/stat	ps
File opened for reading	/proc/self/fd	xargs
File opened for reading	/proc/317/status	ps
File opened for reading	/proc/19/cmdline	ps
File opened for reading	/proc/17/cmdline	ps
File opened for reading	/proc/meminfo	ps
File opened for reading	/proc/652/stat	ps
File opened for reading	/proc/self/stat	sudo
File opened for reading	/proc/sys/kernel/pid_max	ps
File opened for reading	/proc/598/cmdline	ps
File opened for reading	/proc/3/cmdline	ps
File opened for reading	/proc/151/cmdline	ps
File opened for reading	/proc/self/fd	xargs
File opened for reading	/proc/42/cmdline	ps
File opened for reading	/proc/4/cmdline	ps
File opened for reading	/proc/152/stat	ps
File opened for reading	/proc/217/cmdline	ps
File opened for reading	/proc/26/stat	ps
File opened for reading	/proc/26/cmdline	ps
File opened for reading	/proc/self/fd	xargs
File opened for reading	/proc/304/status	ps
File opened for reading	/proc/43/status	ps
File opened for reading	/proc/641/cmdline	ps
File opened for reading	/proc/652/cmdline	ps
File opened for reading	/proc/self/fd	xargs
File opened for reading	/proc/23/stat	ps
File opened for reading	/proc/81/stat	ps
File opened for reading	/proc/595/status	ps
File opened for reading	/proc/1/status	ps
File opened for reading	/proc/22/status	ps
File opened for reading	/proc/10/cmdline	ps
File opened for reading	/proc/27/stat	ps
File opened for reading	/proc/217/status	ps
File opened for reading	/proc/590/cmdline	ps
File opened for reading	/proc/110/stat	ps
File opened for reading	/proc/tty/drivers	ps
File opened for reading	/proc/29/status	ps
File opened for reading	/proc/self/maps	awk
File opened for reading	/proc/9/stat	ps
File opened for reading	/proc/17/cmdline	ps
File opened for reading	/proc/318/stat	ps
File opened for reading	/proc/41/cmdline	ps
File opened for reading	/proc/103/status	ps
File opened for reading	/proc/290/cmdline	ps
File opened for reading	/proc/319/cmdline	ps
File opened for reading	/proc/20/stat	ps
File opened for reading	/proc/317/stat	ps
File opened for reading	/proc/14/status	ps
File opened for reading	/proc/22/cmdline	ps
File opened for reading	/proc/268/stat	ps
File opened for reading	/proc/652/status	ps
File opened for reading	/proc/22/cmdline	ps
File opened for reading	/proc/24/cmdline	ps
File opened for reading	/proc/319/status	ps

Writes file to tmp directory 1 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/log_rot	52940d065af4faae2c6f6a289040bb72_JaffaCakes118

/tmp/52940d065af4faae2c6f6a289040bb72_JaffaCakes118
/tmp/52940d065af4faae2c6f6a289040bb72_JaffaCakes118
1⤵
- Writes file to tmp directory
PID:643
- /bin/rm
  rm -rf /var/log/syslog
  2⤵
  - Deletes system logs
  PID:644
- /usr/bin/chattr
  chattr -iua /tmp/
  2⤵
  - Attempts to change immutable files
  PID:647
- /usr/bin/chattr
  chattr -iua /var/tmp/
  2⤵
  - Attempts to change immutable files
  PID:651
- /usr/bin/chattr
  chattr -R -i /var/spool/cron
  2⤵
  - Attempts to change immutable files
  PID:653
- /usr/bin/chattr
  chattr -i /etc/crontab
  2⤵
  - Attempts to change immutable files
  PID:655
- /sbin/iptables
  iptables -F
  2⤵
  - Flushes firewall rules
  PID:657
- /usr/bin/sudo
  sudo sysctl "kernel.nmi_watchdog=0"
  2⤵
  - Reads runtime system information
  PID:663
- /usr/sbin/userdel
  userdel akay
  2⤵
  PID:668
- /usr/sbin/userdel
  userdel vfinder
  2⤵
  PID:673
- /usr/bin/chattr
  chattr -iae /root/.ssh/
  2⤵
  - Attempts to change immutable files
  PID:676
- /usr/bin/chattr
  chattr -iae /root/.ssh/authorized_keys
  2⤵
  - Attempts to change immutable files
  PID:677
- /bin/rm
  rm -rf "/tmp/addres*"
  2⤵
  PID:679
- /bin/rm
  rm -rf "/tmp/walle*"
  2⤵
  PID:680
- /bin/rm
  rm -rf /tmp/keys
  2⤵
  PID:682
- /bin/ps
  ps aux
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:683
- /bin/grep
  grep -i "[a]liyun"
  2⤵
  - Attempts to change immutable files
  PID:684
- /bin/grep
  grep -i "[y]unjing"
  2⤵
  - Attempts to change immutable files
  PID:688
- /bin/ps
  ps aux
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:687
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:694
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:693
- /bin/grep
  grep 185.71.65.238
  2⤵
  PID:692
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  - Reads runtime system information
  PID:695
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:700
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:699
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:698
- /bin/grep
  grep 140.82.52.87
  2⤵
  PID:697
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  - Reads runtime system information
  PID:707
- /bin/grep
  grep -v -
  2⤵
  PID:706
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:705
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:704
- /bin/grep
  grep :143
  2⤵
  PID:703
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:713
- /bin/grep
  grep -v -
  2⤵
  PID:712
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:711
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:710
- /bin/grep
  grep :2222
  2⤵
  PID:709
- /bin/grep
  grep -v -
  2⤵
  PID:718
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:717
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:716
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  - Reads runtime system information
  PID:719
- /bin/grep
  grep :3333
  2⤵
  PID:715
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  - Reads runtime system information
  PID:725
- /bin/grep
  grep -v -
  2⤵
  PID:724
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:723
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  - Reads runtime system information
  PID:722
- /bin/grep
  grep :3389
  2⤵
  PID:721
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:731
- /bin/grep
  grep -v -
  2⤵
  PID:730
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:728
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:729
- /bin/grep
  grep :4444
  2⤵
  PID:727
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:737
- /bin/grep
  grep -v -
  2⤵
  PID:736
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:735
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:734
- /bin/grep
  grep :5555
  2⤵
  PID:733
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:743
- /bin/grep
  grep -v -
  2⤵
  PID:742
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:741
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:740
- /bin/grep
  grep :6666
  2⤵
  PID:739

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

/tmp/log_rot

Filesize
5B

MD5
727479ef7cedf30c03459bec7d87b0f0

SHA1
2082e7f715f058acab2398d25d135cf5f4c0ce41

SHA256
29872037c9573567744ef10ed2de57864ded7554c9fa2ef03fc1244c65794ba6

SHA512
4cb59d37f8481f9bb2745f494baa0910a68aad40ac2903ef1513547e091e1e772a5f9436f789ab91fcafb75b8a28c2112ede89004be41f33c01d936b542ca6ba

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