3c7faf7512565d86b1ec4fe2810b2006b75c3476b4a5b955f0141d9a1c237d38

Analysis

max time kernel
5s
platform
debian-9_armhf
resource
debian9-armhf-20240729-en
resource tags

arch:armhfimage:debian9-armhf-20240729-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
submitted
09-09-2024 13:34

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

d66aca73387d8ab787f71544777285b5_JaffaCakes118
Size

36KB
MD5

d66aca73387d8ab787f71544777285b5
SHA1

526715af85f935e34b15f124d4b57c8fc37fc1a5
SHA256

3c7faf7512565d86b1ec4fe2810b2006b75c3476b4a5b955f0141d9a1c237d38
SHA512

c9ab083fa7d6a49c333020c13e241303da28afe5a8bd2cf60733fc419ecabef91a9360ac70b5425ee85109367554f3d2a9bf1434dd918ab514fe6ac8800de5ed
SSDEEP

384:x7DQQwQHDf6jlpTWg3vMQ4Qdre21jT58vKpG2Y0orcfKLUv0KZnNEVdeUoJpJyd5:x7kFNc48FkcOYq0xvQGd51ZdAAPPD

Score

7^/10

discovery 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

Clear Linux or Mac System Logs

T1070.002

Processes:

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

Flushes firewall rules 1 IoCs

Flushes/ disables firewall rules inside the Linux kernel.

Processes:

iptables

pid	Process
678	iptables

Attempts to change immutable files 15 IoCs

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

Processes:

xargsxargsxargsxargschattrgrepxargsxargsxargsxargsxargsxargschattrgrepxargs

pid	Process
704	xargs
721	xargs
751	xargs
757	xargs
673	chattr
693	grep
715	xargs
709	xargs
745	xargs
733	xargs
739	xargs
763	xargs
675	chattr
696	grep
727	xargs

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

Reads CPU attributes 1 TTPs 3 IoCs

discovery

System Information Discovery

T1082

Processes:

pssysctlps

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

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

discovery

Processes:

pspsxargsxargsawkxargssysctl

description	ioc	Process
File opened for reading	/proc/26/status	ps
File opened for reading	/proc/43/stat	ps
File opened for reading	/proc/22/cmdline	ps
File opened for reading	/proc/177/stat	ps
File opened for reading	/proc/598/stat	ps
File opened for reading	/proc/16/status	ps
File opened for reading	/proc/13/cmdline	ps
File opened for reading	/proc/646/stat	ps
File opened for reading	/proc/227/stat	ps
File opened for reading	/proc/1/status	ps
File opened for reading	/proc/199/stat	ps
File opened for reading	/proc/311/status	ps
File opened for reading	/proc/601/status	ps
File opened for reading	/proc/self/fd	xargs
File opened for reading	/proc/3/stat	ps
File opened for reading	/proc/6/stat	ps
File opened for reading	/proc/103/stat	ps
File opened for reading	/proc/28/status	ps
File opened for reading	/proc/115/stat	ps
File opened for reading	/proc/644/status	ps
File opened for reading	/proc/8/status	ps
File opened for reading	/proc/81/cmdline	ps
File opened for reading	/proc/self/fd	xargs
File opened for reading	/proc/16/stat	ps
File opened for reading	/proc/4/cmdline	ps
File opened for reading	/proc/8/stat	ps
File opened for reading	/proc/157/cmdline	ps
File opened for reading	/proc/self/maps	awk
File opened for reading	/proc/28/stat	ps
File opened for reading	/proc/29/status	ps
File opened for reading	/proc/639/stat	ps
File opened for reading	/proc/9/stat	ps
File opened for reading	/proc/9/cmdline	ps
File opened for reading	/proc/323/stat	ps
File opened for reading	/proc/692/cmdline	ps
File opened for reading	/proc/26/stat	ps
File opened for reading	/proc/29/stat	ps
File opened for reading	/proc/644/cmdline	ps
File opened for reading	/proc/691/cmdline	ps
File opened for reading	/proc/103/status	ps
File opened for reading	/proc/2/stat	ps
File opened for reading	/proc/279/status	ps
File opened for reading	/proc/13/status	ps
File opened for reading	/proc/114/cmdline	ps
File opened for reading	/proc/145/status	ps
File opened for reading	/proc/595/stat	ps
File opened for reading	/proc/2/status	ps
File opened for reading	/proc/227/cmdline	ps
File opened for reading	/proc/644/stat	ps
File opened for reading	/proc/279/stat	ps
File opened for reading	/proc/293/cmdline	ps
File opened for reading	/proc/self/fd	xargs
File opened for reading	/proc/112/cmdline	ps
File opened for reading	/proc/199/cmdline	ps
File opened for reading	/proc/580/stat	ps
File opened for reading	/proc/12/status	ps
File opened for reading	/proc/177/status	ps
File opened for reading	/proc/11/cmdline	ps
File opened for reading	/proc/691/stat	ps
File opened for reading	/proc/8/status	ps
File opened for reading	/proc/311/status	ps
File opened for reading	/proc/280/status	ps
File opened for reading	/proc/639/status	ps
File opened for reading	/proc/sys/kernel/osrelease	sysctl

Writes file to tmp directory 1 IoCs

Malware often drops required files in the /tmp directory.

Processes:

d66aca73387d8ab787f71544777285b5_JaffaCakes118

description	ioc	Process
File opened for modification	/tmp/dev/null	d66aca73387d8ab787f71544777285b5_JaffaCakes118

/tmp/d66aca73387d8ab787f71544777285b5_JaffaCakes118
/tmp/d66aca73387d8ab787f71544777285b5_JaffaCakes118
1⤵
- Writes file to tmp directory
PID:646
- /bin/sync
  sync
  2⤵
  PID:648
- /bin/cat
  cat /var/spool/cron/
  2⤵
  PID:651
- /bin/cat
  cat /root/.ssh/authorized_keys
  2⤵
  PID:656
- /bin/mv
  mv /usr/bin/curl /usr/bin/url
  2⤵
  PID:661
- /bin/mv
  mv /usr/bin/url /usr/bin/cdl
  2⤵
  PID:663
- /bin/mv
  mv /usr/bin/wget /usr/bin/get
  2⤵
  PID:665
- /bin/mv
  mv /usr/bin/get /usr/bin/wdl
  2⤵
  PID:668
- /bin/rm
  rm -rf /var/log/syslog
  2⤵
  - Deletes system logs
  PID:671
- /usr/bin/chattr
  chattr -iua /tmp/
  2⤵
  - Attempts to change immutable files
  PID:673
- /usr/bin/chattr
  chattr -iua /var/tmp/
  2⤵
  - Attempts to change immutable files
  PID:675
- /sbin/iptables
  iptables -F
  2⤵
  - Flushes firewall rules
  PID:678
- /usr/sbin/userdel
  userdel akay
  2⤵
  PID:682
- /usr/sbin/userdel
  userdel vfinder
  2⤵
  PID:685
- /bin/rm
  rm -rf "/tmp/addres*"
  2⤵
  PID:686
- /bin/rm
  rm -rf "/tmp/walle*"
  2⤵
  PID:688
- /bin/rm
  rm -rf /tmp/keys
  2⤵
  PID:690
- /bin/grep
  grep -i "[a]liyun"
  2⤵
  - Attempts to change immutable files
  PID:693
- /bin/ps
  ps aux
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:692
- /bin/grep
  grep -i "[y]unjing"
  2⤵
  - Attempts to change immutable files
  PID:696
- /bin/ps
  ps aux
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:695
- /bin/rm
  rm -f /tmp/.null
  2⤵
  PID:698
- /sbin/sysctl
  sysctl -w "vm.nr_hugepages=128"
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:699
- /bin/grep
  grep 185.71.65.238
  2⤵
  PID:701
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:702
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:703
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  - Reads runtime system information
  PID:704
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:709
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:708
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:707
- /bin/grep
  grep 140.82.52.87
  2⤵
  PID:706
- /bin/grep
  grep -v -
  2⤵
  PID:714
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:713
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:712
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:715
- /bin/grep
  grep :443
  2⤵
  PID:711
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:719
- /bin/grep
  grep -v -
  2⤵
  PID:720
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:718
- /bin/grep
  grep :23
  2⤵
  PID:717
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:721
- /bin/grep
  grep -v -
  2⤵
  PID:726
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:725
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:724
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:727
- /bin/grep
  grep :443
  2⤵
  PID:723
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:731
- /bin/grep
  grep -v -
  2⤵
  PID:732
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  - Reads runtime system information
  PID:730
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:733
- /bin/grep
  grep :143
  2⤵
  PID:729
- /bin/grep
  grep -v -
  2⤵
  PID:738
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:737
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:736
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  - Reads runtime system information
  PID:739
- /bin/grep
  grep :2222
  2⤵
  PID:735
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:743
- /bin/grep
  grep -v -
  2⤵
  PID:744
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:742
- /bin/grep
  grep :3333
  2⤵
  PID:741
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:745
- /bin/grep
  grep -v -
  2⤵
  PID:750
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:749
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:748
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:751
- /bin/grep
  grep :3389
  2⤵
  PID:747
- /bin/grep
  grep -v -
  2⤵
  PID:756
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:755
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:754
- /bin/grep
  grep :4444
  2⤵
  PID:753
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  - Reads runtime system information
  PID:757
- /bin/grep
  grep -v -
  2⤵
  PID:762
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:761
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:760
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:763
- /bin/grep
  grep :5555
  2⤵
  PID:759

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

Clear Linux or Mac System Logs

T1070.002

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

/etc/sysupdatas

Filesize
2B

MD5
b026324c6904b2a9cb4b88d6d61c81d1

SHA1
e5fa44f2b31c1fb553b6021e7360d07d5d91ff5e

SHA256
4355a46b19d348dc2f57c046f8ef63d4538ebb936000f3c9ee954a27460dd865

SHA512
3abb6677af34ac57c0ca5828fd94f9d886c26ce59a8ce60ecf6778079423dccff1d6f19cb655805d56098e6d38a1a710dee59523eed7511e5a9e4b8ccb3a4686

Download Submit