f73852da62dd7d56a74a82144a5cfd694201fca36a7b86888f1a8f069f6b3492

Analysis

max time kernel
6s
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
04-07-2024 09:43

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General

Target

257c6ea365b6ca33dd34c90584ed88bb_JaffaCakes118
Size

30KB
MD5

257c6ea365b6ca33dd34c90584ed88bb
SHA1

655704ef149ea4a9667089442209854460c4c78f
SHA256

f73852da62dd7d56a74a82144a5cfd694201fca36a7b86888f1a8f069f6b3492
SHA512

c2a38716ee954f0dd6bc143168950a5f2c8ea180bad6a968f86c837bd7c25487de8c427c5e086f433f09ca805d9bb8deb9e1f000f610748999e2c62d3a095afd
SSDEEP

384:p7pQBDf6jlpTWg3vMGQiirhHwMyGj4CC9vEKMvU/4Qdre21jT58vKpG2Y0orcfKe:p78zQ5VFNcDAFLcIwgnoYq0xFBVZHtln

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

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
657	iptables

Attempts to change immutable files 20 IoCs

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

Processes:

xargschattrchattrgrepxargsxargsxargsxargsxargsxargsxargsxargschattrchattrchattrgrepchattrxargsxargsxargs

pid	Process
738	xargs
645	chattr
648	chattr
686	grep
714	xargs
702	xargs
708	xargs
762	xargs
696	xargs
726	xargs
750	xargs
756	xargs
654	chattr
677	chattr
678	chattr
690	grep
653	chattr
720	xargs
732	xargs
744	xargs

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

Reads CPU attributes 1 TTPs 2 IoCs

System Information Discovery

T1082

Processes:

psps

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.

Processes:

pspssudoawkawk

description	ioc	Process
File opened for reading	/proc/13/status	ps
File opened for reading	/proc/20/status	ps
File opened for reading	/proc/28/cmdline	ps
File opened for reading	/proc/643/status	ps
File opened for reading	/proc/688/cmdline	ps
File opened for reading	/proc/7/stat	ps
File opened for reading	/proc/290/cmdline	ps
File opened for reading	/proc/318/stat	ps
File opened for reading	/proc/25/status	ps
File opened for reading	/proc/29/cmdline	ps
File opened for reading	/proc/304/status	ps
File opened for reading	/proc/642/status	ps
File opened for reading	/proc/16/status	ps
File opened for reading	/proc/8/cmdline	ps
File opened for reading	/proc/9/cmdline	ps
File opened for reading	/proc/29/status	ps
File opened for reading	/proc/113/status	ps
File opened for reading	/proc/267/status	ps
File opened for reading	/proc/24/stat	ps
File opened for reading	/proc/112/stat	ps
File opened for reading	/proc/6/stat	ps
File opened for reading	/proc/643/stat	ps
File opened for reading	/proc/640/stat	ps
File opened for reading	/proc/20/stat	ps
File opened for reading	/proc/10/cmdline	ps
File opened for reading	/proc/9/status	ps
File opened for reading	/proc/12/status	ps
File opened for reading	/proc/16/stat	ps
File opened for reading	/proc/tty/drivers	ps
File opened for reading	/proc/590/status	ps
File opened for reading	/proc/21/stat	ps
File opened for reading	/proc/25/status	ps
File opened for reading	/proc/675/stat	ps
File opened for reading	/proc/uptime	ps
File opened for reading	/proc/22/status	ps
File opened for reading	/proc/15/stat	ps
File opened for reading	/proc/317/status	ps
File opened for reading	/proc/597/stat	ps
File opened for reading	/proc/filesystems	sudo
File opened for reading	/proc/28/cmdline	ps
File opened for reading	/proc/19/cmdline	ps
File opened for reading	/proc/641/status	ps
File opened for reading	/proc/9/stat	ps
File opened for reading	/proc/22/stat	ps
File opened for reading	/proc/269/stat	ps
File opened for reading	/proc/317/stat	ps
File opened for reading	/proc/23/status	ps
File opened for reading	/proc/110/status	ps
File opened for reading	/proc/143/cmdline	ps
File opened for reading	/proc/43/status	ps
File opened for reading	/proc/113/cmdline	ps
File opened for reading	/proc/113/status	ps
File opened for reading	/proc/13/cmdline	ps
File opened for reading	/proc/24/status	ps
File opened for reading	/proc/27/status	ps
File opened for reading	/proc/577/cmdline	ps
File opened for reading	/proc/641/stat	ps
File opened for reading	/proc/1/stat	ps
File opened for reading	/proc/166/stat	ps
File opened for reading	/proc/self/maps	awk
File opened for reading	/proc/self/maps	awk
File opened for reading	/proc/sys/kernel/osrelease	ps
File opened for reading	/proc/143/stat	ps
File opened for reading	/proc/152/stat	ps

Writes file to tmp directory 1 IoCs

Malware often drops required files in the /tmp directory.

Processes:

257c6ea365b6ca33dd34c90584ed88bb_JaffaCakes118

description	ioc	Process
File opened for modification	/tmp/log_rot	257c6ea365b6ca33dd34c90584ed88bb_JaffaCakes118

/tmp/257c6ea365b6ca33dd34c90584ed88bb_JaffaCakes118
/tmp/257c6ea365b6ca33dd34c90584ed88bb_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:645
- /usr/bin/chattr
  chattr -iua /var/tmp/
  2⤵
  - Attempts to change immutable files
  PID:648
- /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:654
- /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:664
- /usr/sbin/userdel
  userdel akay
  2⤵
  PID:669
- /usr/sbin/userdel
  userdel vfinder
  2⤵
  PID:673
- /usr/bin/chattr
  chattr -iae /root/.ssh/
  2⤵
  - Attempts to change immutable files
  PID:677
- /usr/bin/chattr
  chattr -iae /root/.ssh/authorized_keys
  2⤵
  - Attempts to change immutable files
  PID:678
- /bin/rm
  rm -rf "/tmp/addres*"
  2⤵
  PID:681
- /bin/rm
  rm -rf "/tmp/walle*"
  2⤵
  PID:682
- /bin/rm
  rm -rf /tmp/keys
  2⤵
  PID:683
- /bin/ps
  ps aux
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:684
- /bin/grep
  grep -i "[a]liyun"
  2⤵
  - Attempts to change immutable files
  PID:686
- /bin/grep
  grep -i "[y]unjing"
  2⤵
  - Attempts to change immutable files
  PID:690
- /bin/ps
  ps aux
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:689
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:694
- /bin/grep
  grep 185.71.65.238
  2⤵
  PID:693
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:695
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:696
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:702
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  - Reads runtime system information
  PID:701
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:700
- /bin/grep
  grep 140.82.52.87
  2⤵
  PID:699
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:708
- /bin/grep
  grep -v -
  2⤵
  PID:707
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:706
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:705
- /bin/grep
  grep :143
  2⤵
  PID:704
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:714
- /bin/grep
  grep -v -
  2⤵
  PID:713
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:712
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:711
- /bin/grep
  grep :2222
  2⤵
  PID:710
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:720
- /bin/grep
  grep -v -
  2⤵
  PID:719
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:718
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:717
- /bin/grep
  grep :3333
  2⤵
  PID:716
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:726
- /bin/grep
  grep -v -
  2⤵
  PID:725
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:724
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:723
- /bin/grep
  grep :3389
  2⤵
  PID:722
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:732
- /bin/grep
  grep -v -
  2⤵
  PID:731
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  - Reads runtime system information
  PID:730
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:729
- /bin/grep
  grep :4444
  2⤵
  PID:728
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:738
- /bin/grep
  grep -v -
  2⤵
  PID:737
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:736
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:735
- /bin/grep
  grep :5555
  2⤵
  PID:734
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:744
- /bin/grep
  grep -v -
  2⤵
  PID:743
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:742
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:741
- /bin/grep
  grep :6666
  2⤵
  PID:740
- /bin/grep
  grep -v -
  2⤵
  PID:749
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:748
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:750
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:747
- /bin/grep
  grep :6665
  2⤵
  PID:746
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:756
- /bin/grep
  grep -v -
  2⤵
  PID:755
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:754
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:753
- /bin/grep
  grep :6667
  2⤵
  PID:752
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:762
- /bin/grep
  grep -v -
  2⤵
  PID:761
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:760
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:759
- /bin/grep
  grep :7777
  2⤵
  PID:758

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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