b7b12dcb15e682c62eb4151041251b62a4ac86e76ac87f4af65be0818b648174

Analysis

max time kernel
5s
platform
debian-9_armhf
resource
debian9-armhf-20240611-en
resource tags

arch:armhfimage:debian9-armhf-20240611-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
submitted
16-09-2024 03:56

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General

Target

e3fb4dc382dfa4fe37498329727bea34_JaffaCakes118
Size

28KB
MD5

e3fb4dc382dfa4fe37498329727bea34
SHA1

a2aa6b00de3fb975fce1c3ab6d8e4f290df9a3fd
SHA256

b7b12dcb15e682c62eb4151041251b62a4ac86e76ac87f4af65be0818b648174
SHA512

177954ced290f48bd34fe3d0b2c3bdbc3683772cbd2256c174675cd00a4606ca2fa42b2da4f3d5fbf3c124209b8e367c287bc769378253bcce61fcc57792baaf
SSDEEP

384:p7pQQwQHDf6jlpTWg3vMGQiKMvU/4Qdre21jT58vKpG2Y0orcfKLUv0KZnNEVdeg:p7JVFNcD8FLcIwgiYq0xFB25

Score

7^/10

defense_evasion discovery evasion privilege_escalation

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

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

Flushes firewall rules 1 IoCs

Flushes/ disables firewall rules inside the Linux kernel.

pid	Process
663	iptables

Abuse Elevation Control Mechanism: Sudo and Sudo Caching 1 TTPs 1 IoCs

Abuse sudo or cached sudo credentials to execute code.

privilege_escalation defense_evasion

Sudo and Sudo Caching

T1548.003

pid	Process
669	sudo

Attempts to change immutable files 17 IoCs

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

pid	Process
658	chattr
681	chattr
710	xargs
716	xargs
722	xargs
734	xargs
654	chattr
661	chattr
688	grep
748	xargs
651	chattr
692	grep
704	xargs
742	xargs
679	chattr
698	xargs
728	xargs

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

Reads CPU attributes 1 TTPs 2 IoCs

discovery

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.

discovery

description	ioc	Process
File opened for reading	/proc/16/status	ps
File opened for reading	/proc/25/stat	ps
File opened for reading	/proc/29/stat	ps
File opened for reading	/proc/41/cmdline	ps
File opened for reading	/proc/151/cmdline	ps
File opened for reading	/proc/21/cmdline	ps
File opened for reading	/proc/646/status	ps
File opened for reading	/proc/2/stat	ps
File opened for reading	/proc/109/status	ps
File opened for reading	/proc/691/cmdline	ps
File opened for reading	/proc/self/maps	awk
File opened for reading	/proc/9/status	ps
File opened for reading	/proc/25/cmdline	ps
File opened for reading	/proc/297/stat	ps
File opened for reading	/proc/5/stat	ps
File opened for reading	/proc/688/stat	ps
File opened for reading	/proc/16/stat	ps
File opened for reading	/proc/645/cmdline	ps
File opened for reading	/proc/109/stat	ps
File opened for reading	/proc/599/stat	ps
File opened for reading	/proc/21/status	ps
File opened for reading	/proc/23/stat	ps
File opened for reading	/proc/332/cmdline	ps
File opened for reading	/proc/690/cmdline	ps
File opened for reading	/proc/28/stat	ps
File opened for reading	/proc/8/stat	ps
File opened for reading	/proc/20/cmdline	ps
File opened for reading	/proc/tty/drivers	ps
File opened for reading	/proc/self/maps	awk
File opened for reading	/proc/43/stat	ps
File opened for reading	/proc/43/cmdline	ps
File opened for reading	/proc/14/stat	ps
File opened for reading	/proc/4/cmdline	ps
File opened for reading	/proc/6/stat	ps
File opened for reading	/proc/self/fd	xargs
File opened for reading	/proc/139/cmdline	ps
File opened for reading	/proc/106/status	ps
File opened for reading	/proc/645/stat	ps
File opened for reading	/proc/19/cmdline	ps
File opened for reading	/proc/213/status	ps
File opened for reading	/proc/self/fd	xargs
File opened for reading	/proc/3/cmdline	ps
File opened for reading	/proc/140/status	ps
File opened for reading	/proc/307/status	ps
File opened for reading	/proc/28/cmdline	ps
File opened for reading	/proc/106/status	ps
File opened for reading	/proc/22/status	ps
File opened for reading	/proc/22/stat	ps
File opened for reading	/proc/19/stat	ps
File opened for reading	/proc/587/cmdline	ps
File opened for reading	/proc/8/cmdline	ps
File opened for reading	/proc/29/cmdline	ps
File opened for reading	/proc/687/cmdline	ps
File opened for reading	/proc/42/status	ps
File opened for reading	/proc/151/stat	ps
File opened for reading	/proc/600/cmdline	ps
File opened for reading	/proc/41/stat	ps
File opened for reading	/proc/108/status	ps
File opened for reading	/proc/648/stat	ps
File opened for reading	/proc/692/cmdline	ps
File opened for reading	/proc/599/cmdline	ps
File opened for reading	/proc/634/stat	ps
File opened for reading	/proc/106/cmdline	ps
File opened for reading	/proc/20/cmdline	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	e3fb4dc382dfa4fe37498329727bea34_JaffaCakes118

/tmp/e3fb4dc382dfa4fe37498329727bea34_JaffaCakes118
/tmp/e3fb4dc382dfa4fe37498329727bea34_JaffaCakes118
1⤵
- Writes file to tmp directory
PID:648
- /bin/rm
  rm -rf /var/log/syslog
  2⤵
  - Deletes system logs
  PID:649
- /usr/bin/chattr
  chattr -iua /tmp/
  2⤵
  - Attempts to change immutable files
  PID:651
- /usr/bin/chattr
  chattr -iua /var/tmp/
  2⤵
  - Attempts to change immutable files
  PID:654
- /usr/bin/chattr
  chattr -R -i /var/spool/cron
  2⤵
  - Attempts to change immutable files
  PID:658
- /usr/bin/chattr
  chattr -i /etc/crontab
  2⤵
  - Attempts to change immutable files
  PID:661
- /sbin/iptables
  iptables -F
  2⤵
  - Flushes firewall rules
  PID:663
- /usr/bin/sudo
  sudo sysctl "kernel.nmi_watchdog=0"
  2⤵
  - Abuse Elevation Control Mechanism: Sudo and Sudo Caching
  PID:669
- /usr/sbin/userdel
  userdel akay
  2⤵
  PID:675
- /usr/sbin/userdel
  userdel vfinder
  2⤵
  PID:678
- /usr/bin/chattr
  chattr -iae /root/.ssh/
  2⤵
  - Attempts to change immutable files
  PID:679
- /usr/bin/chattr
  chattr -iae /root/.ssh/authorized_keys
  2⤵
  - Attempts to change immutable files
  PID:681
- /bin/rm
  rm -rf "/tmp/addres*"
  2⤵
  PID:683
- /bin/rm
  rm -rf "/tmp/walle*"
  2⤵
  PID:684
- /bin/rm
  rm -rf /tmp/keys
  2⤵
  PID:685
- /bin/ps
  ps aux
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:687
- /bin/grep
  grep -i "[a]liyun"
  2⤵
  - Attempts to change immutable files
  PID:688
- /bin/grep
  grep -i "[y]unjing"
  2⤵
  - Attempts to change immutable files
  PID:692
- /bin/ps
  ps aux
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:691
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:696
- /bin/grep
  grep 185.71.65.238
  2⤵
  PID:695
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  - Reads runtime system information
  PID:697
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  - Reads runtime system information
  PID:698
- /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
  PID:704
- /bin/grep
  grep 140.82.52.87
  2⤵
  PID:701
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:708
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:707
- /bin/grep
  grep -v -
  2⤵
  PID:709
- /bin/grep
  grep :443
  2⤵
  PID:706
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:710
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:713
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:714
- /bin/grep
  grep :23
  2⤵
  PID:712
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  - Reads runtime system information
  PID:716
- /bin/grep
  grep -v -
  2⤵
  PID:715
- /bin/grep
  grep -v -
  2⤵
  PID:721
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:720
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:719
- /bin/grep
  grep :443
  2⤵
  PID:718
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:722
- /bin/grep
  grep -v -
  2⤵
  PID:727
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:726
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:725
- /bin/grep
  grep :143
  2⤵
  PID:724
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:728
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:732
- /bin/grep
  grep -v -
  2⤵
  PID:733
- /bin/grep
  grep :2222
  2⤵
  PID:730
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:734
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:731
- /bin/grep
  grep -v -
  2⤵
  PID:741
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  - Reads runtime system information
  PID:740
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:739
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:742
- /bin/grep
  grep :3333
  2⤵
  PID:738
- /usr/bin/awk
  awk "{print \$7}"
  2⤵
  PID:745
- /usr/bin/awk
  awk "-F[/]" "{print \$1}"
  2⤵
  PID:746
- /bin/grep
  grep :3389
  2⤵
  PID:744
- /bin/grep
  grep -v -
  2⤵
  PID:747
- /usr/bin/xargs
  xargs -I "%" kill -9 "%"
  2⤵
  - Attempts to change immutable files
  PID:748

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Sudo and Sudo Caching

T1548.003

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Sudo and Sudo Caching

T1548.003

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

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Downloads

/tmp/log_rot

Filesize
5B

MD5
727479ef7cedf30c03459bec7d87b0f0

SHA1
2082e7f715f058acab2398d25d135cf5f4c0ce41

SHA256
29872037c9573567744ef10ed2de57864ded7554c9fa2ef03fc1244c65794ba6

SHA512
4cb59d37f8481f9bb2745f494baa0910a68aad40ac2903ef1513547e091e1e772a5f9436f789ab91fcafb75b8a28c2112ede89004be41f33c01d936b542ca6ba

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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