mrblack | 1ea1b4edcc7e1ba2ba0e549ff3fcdd35efabd69f4e671b905a7d38ec97a7d9d9

Analysis

max time kernel
149s
max time network
150s
platform
ubuntu-22.04_amd64
resource
ubuntu2204-amd64-20240611-en
resource tags

arch:amd64arch:i386image:ubuntu2204-amd64-20240611-enkernel:5.15.0-105-genericlocale:en-usos:ubuntu-22.04-amd64system
submitted
24-08-2024 12:45

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General

Target

be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118
Size

1.1MB
MD5

be9e6e33ce58d7572b0a089a9be20dd0
SHA1

5f3788156d48b1e1865a471a9a34019aa63f1a1b
SHA256

1ea1b4edcc7e1ba2ba0e549ff3fcdd35efabd69f4e671b905a7d38ec97a7d9d9
SHA512

8b20ab73a1aa5ad3c1cf09af600e538cfb519a509c599ea76a6b07189d04e679112e2c273ed2e8ae1de677af614c74b4332ab973542e0c6bb8d5b5968aa97b07
SSDEEP

24576:4vRE7caCfKGPqVEDNLFxKsfa4I+gIGYuuCol7r:4vREKfPqVE5jKsfa4RHGVo7r

Score

10^/10

mrblack antivm botnet persistence trojan

Malware Config

Signatures

MrBlack Trojan
IoT botnet which infects routers to be used for DDoS attacks.
trojan botnet mrblack

MrBlack trojan 1 IoCs

resource	yara_rule
behavioral1/files/fstream-4.dat	family_mrblack

Executes dropped EXE 2 IoCs

ioc	pid	Process
/usr/bin/bsd-port/getty	1591	getty
/etc/ssh/bashpa	1599	bashpa

Modifies init.d 1 TTPs 2 IoCs

Adds/modifies system service, likely for persistence.

persistence

Boot or Logon Autostart Execution

T1547

description	ioc	Process
File opened for modification	/etc/init.d/DbSecuritySpt	be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118
File opened for modification	/etc/init.d/selinux	getty

Reads system routing table 1 TTPs 1 IoCs

Gets active network interfaces from /proc virtual filesystem.

System Network Configuration Discovery

T1016

description	ioc	Process
File opened for reading	/proc/net/route	be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118

Write file to user bin folder 1 TTPs 8 IoCs

Hijack Execution Flow

T1574

description	ioc	Process
File opened for modification	/usr/bin/dpkgd/ps	cp
File opened for modification	/usr/bin/lsof	cp
File opened for modification	/usr/bin/ps	cp
File opened for modification	/usr/bin/bsd-port/getty.lock	be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118
File opened for modification	/usr/bin/bsd-port/udevd.lock	be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118
File opened for modification	/usr/bin/bsd-port/getty	cp
File opened for modification	/usr/bin/bsd-port/getty.lock	getty
File opened for modification	/usr/bin/dpkgd/lsof	cp

Writes file to system bin folder 1 TTPs 2 IoCs

Hijack Execution Flow

T1574

description	ioc	Process
File opened for modification	/bin/lsof	cp
File opened for modification	/bin/ps	cp

Checks CPU configuration 1 TTPs 2 IoCs

Checks CPU information which indicate if the system is a virtual machine.

antivm

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
File opened for reading	/proc/cpuinfo	be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118
File opened for reading	/proc/cpuinfo	getty

Reads system network configuration 1 TTPs 4 IoCs

Uses contents of /proc filesystem to enumerate network settings.

System Network Configuration Discovery

T1016

description	ioc	Process
File opened for reading	/proc/net/dev	be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118
File opened for reading	/proc/net/route	be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118
File opened for reading	/proc/net/arp	be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118
File opened for reading	/proc/net/dev	getty

Reads runtime system information 24 IoCs

Reads data from /proc virtual filesystem.

description	ioc	Process
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/sys/kernel/version	getty
File opened for reading	/proc/sys/kernel/version	bashpa
File opened for reading	/proc/stat	be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/cmdline	insmod
File opened for reading	/proc/sys/kernel/version	be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/stat	getty
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/meminfo	getty
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/cmdline	insmod
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/meminfo	be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118
File opened for reading	/proc/filesystems	cp

Writes file to tmp directory 8 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/moni.lock	bashpa
File opened for modification	/tmp/notify.file	bashpa
File opened for modification	/tmp/gates.lock	bashpa
File opened for modification	/tmp/moni.lock	be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118
File opened for modification	/tmp/bill.lock	be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118
File opened for modification	/tmp/gates.lock	be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118
File opened for modification	/tmp/notify.file	be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118
File opened for modification	/tmp/conf.n	be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118

/tmp/be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118
/tmp/be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118
1⤵
- Modifies init.d
- Reads system routing table
- Write file to user bin folder
- Checks CPU configuration
- Reads system network configuration
- Reads runtime system information
- Writes file to tmp directory
PID:1554
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt"
  2⤵
  PID:1575
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt
    3⤵
    PID:1576
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt"
  2⤵
  PID:1577
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt
    3⤵
    PID:1578
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt"
  2⤵
  PID:1579
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt
    3⤵
    PID:1580
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt"
  2⤵
  PID:1581
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt
    3⤵
    PID:1582
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt"
  2⤵
  PID:1583
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt
    3⤵
    PID:1584
- /bin/sh
  sh -c "mkdir -p /usr/bin/bsd-port"
  2⤵
  PID:1585
- - /usr/bin/mkdir
    mkdir -p /usr/bin/bsd-port
    3⤵
    - Reads runtime system information
    PID:1586
- /bin/sh
  sh -c "cp -f /tmp/be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118 /usr/bin/bsd-port/getty"
  2⤵
  PID:1587
- - /usr/bin/cp
    cp -f /tmp/be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118 /usr/bin/bsd-port/getty
    3⤵
    - Write file to user bin folder
    - Reads runtime system information
    PID:1588
- /bin/sh
  sh -c /usr/bin/bsd-port/getty
  2⤵
  PID:1590
- - /usr/bin/bsd-port/getty
    /usr/bin/bsd-port/getty
    3⤵
    - Executes dropped EXE
    - Modifies init.d
    - Write file to user bin folder
    - Checks CPU configuration
    - Reads system network configuration
    - Reads runtime system information
    PID:1591
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"
      4⤵
      PID:1607
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
        5⤵
        
        PID:1608
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"
      4⤵
      PID:1609
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
        5⤵
        
        PID:1610
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"
      4⤵
      PID:1611
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
        5⤵
        
        PID:1612
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"
      4⤵
      PID:1613
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
        5⤵
        
        PID:1614
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"
      4⤵
      PID:1615
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
        5⤵
        
        PID:1616
  - - /bin/sh
      sh -c "mkdir -p /usr/bin/dpkgd"
      4⤵
      PID:1617
    - - /usr/bin/mkdir
        
        mkdir -p /usr/bin/dpkgd
        5⤵
        Reads runtime system information
        
        PID:1618
  - - /bin/sh
      sh -c "cp -f /bin/lsof /usr/bin/dpkgd/lsof"
      4⤵
      PID:1620
    - - /usr/bin/cp
        
        cp -f /bin/lsof /usr/bin/dpkgd/lsof
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1621
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1622
    - - /usr/bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1623
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /bin/lsof"
      4⤵
      PID:1624
    - - /usr/bin/cp
        
        cp -f /usr/bin/bsd-port/getty /bin/lsof
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1625
  - - /bin/sh
      sh -c "chmod 0755 /bin/lsof"
      4⤵
      PID:1627
    - - /usr/bin/chmod
        
        chmod 0755 /bin/lsof
        5⤵
        
        PID:1628
  - - /bin/sh
      sh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"
      4⤵
      PID:1629
    - - /usr/bin/cp
        
        cp -f /bin/ps /usr/bin/dpkgd/ps
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1630
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1631
    - - /usr/bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1632
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /bin/ps"
      4⤵
      PID:1634
    - - /usr/bin/cp
        
        cp -f /usr/bin/bsd-port/getty /bin/ps
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1635
  - - /bin/sh
      sh -c "chmod 0755 /bin/ps"
      4⤵
      PID:1636
    - - /usr/bin/chmod
        
        chmod 0755 /bin/ps
        5⤵
        
        PID:1637
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1638
    - - /usr/bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1639
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /usr/bin/lsof"
      4⤵
      PID:1640
    - - /usr/bin/cp
        
        cp -f /usr/bin/bsd-port/getty /usr/bin/lsof
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1641
  - - /bin/sh
      sh -c "chmod 0755 /usr/bin/lsof"
      4⤵
      PID:1642
    - - /usr/bin/chmod
        
        chmod 0755 /usr/bin/lsof
        5⤵
        
        PID:1643
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1644
    - - /usr/bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1645
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /usr/bin/ps"
      4⤵
      PID:1646
    - - /usr/bin/cp
        
        cp -f /usr/bin/bsd-port/getty /usr/bin/ps
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1647
  - - /bin/sh
      sh -c "chmod 0755 /usr/bin/ps"
      4⤵
      PID:1648
    - - /usr/bin/chmod
        
        chmod 0755 /usr/bin/ps
        5⤵
        
        PID:1649
  - - /bin/sh
      sh -c "insmod /usr/lib/xpacket.ko"
      4⤵
      PID:1650
    - - /usr/sbin/insmod
        
        insmod /usr/lib/xpacket.ko
        5⤵
        Reads runtime system information
        
        PID:1651
- /bin/sh
  sh -c "mkdir -p /etc/ssh"
  2⤵
  PID:1593
- - /usr/bin/mkdir
    mkdir -p /etc/ssh
    3⤵
    - Reads runtime system information
    PID:1594
- /bin/sh
  sh -c "cp -f /tmp/be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118 /etc/ssh/bashpa"
  2⤵
  PID:1595
- - /usr/bin/cp
    cp -f /tmp/be9e6e33ce58d7572b0a089a9be20dd0_JaffaCakes118 /etc/ssh/bashpa
    3⤵
    - Reads runtime system information
    PID:1596
- /bin/sh
  sh -c /etc/ssh/bashpa
  2⤵
  PID:1598
- - /etc/ssh/bashpa
    /etc/ssh/bashpa
    3⤵
    - Executes dropped EXE
    - Reads runtime system information
    - Writes file to tmp directory
    PID:1599
- /bin/sh
  sh -c "insmod /usr/lib/xpacket.ko"
  2⤵
  PID:1601
- - /usr/sbin/insmod
    insmod /usr/lib/xpacket.ko
    3⤵
    - Reads runtime system information
    PID:1602

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Hijack Execution Flow

T1574

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Hijack Execution Flow

T1574

Defense Evasion

Hijack Execution Flow

T1574

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

System Network Configuration Discovery

T1016

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

/etc/init.d/DbSecuritySpt

Filesize
64B

MD5
5005b7a92750528d3c312db7d154d447

SHA1
c79d13a8a71e35a3034e5f1ef9ad6c1395af40eb

SHA256
22d69231f74de26ae9acd9bc8a270cfe8672124707f3d601ec1dfa9f0bac0ec7

SHA512
5f731a47c15adda97dd9cce9989e15c669ff1527c553fcc5a56c95933b96684c3fce9991a9b5a306a44bae3ff8adb0d0b0afd309719586d88c78f5a5ed4a2887

Download Submit
/etc/init.d/selinux

Filesize
36B

MD5
993cc15058142d96c3daf7852c3d5ee8

SHA1
0950b8b391b04dd3895ea33cd3141543ebd2525d

SHA256
8171d077918611803d93088409f220c66fae1c670b297e1aa5d8cbd548ce9208

SHA512
0c4256c00a3710f97e92581b552682b36b62afc35fe72622c491323c618c19ea62611ac04ccafc3dfcde2254a2ebbd93b69b66795b16e36332293bed83adb928

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/tmp/conf.n

Filesize
69B

MD5
2930859241efab3842629a18ef4f5b31

SHA1
250c45f7c6c6985bf7e8222365bf01396e458bd3

SHA256
d0aacf9dd6643c0d186b1d9412c72c81ba33135441d64a659a302e15aac03782

SHA512
ab2a27dc6c66ebfbb865bab522d80b46c7a138ee8b05692abdbfe3b86fbac7cba6810b353ef91a20cce63f3e88df7e206d493ea4b33ee2b162b33b0c4b711498

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/tmp/gates.lock

Filesize
4B

MD5
b2dd140336c9df867c087a29b2e66034

SHA1
9f7f230b6748530889d6d498ff5f5e2934fdbe69

SHA256
2ae7ffb0ec4d1bccf01b12233aaced6949cc5808a4a173315ee508abbbaaaa1c

SHA512
4140f3a8f3bd58f4e2e4c071d097d6401a78187340dd6f63f7e157d3fcd2a4f78d65f3b6b34c352c8f35cdb2983d054b76f4d8ea49586e260ab81c0463a31c9b

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/tmp/moni.lock

Filesize
4B

MD5
9e984c108157cea74c894b5cf34efc44

SHA1
0c774d8e1e30b273143a93836f845a4d3f44a60f

SHA256
b458944d9ec4322f9ff0de2885ce82d580341fcf0fd688422e9929b6e7ce3b2d

SHA512
aeb9c3cdd81ee2439338d9c994a1150abf17fedc07542fb625f0dc70cf5d160e5b9827cbc875552d7bdc14d9372ee6b2525ac8e80d0f4a0fa88fcb86b79bd2fc

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/tmp/notify.file

Filesize
51B

MD5
9bfaf207ca1136de452606fefdef1573

SHA1
63396cf573c9cda57e18a0efa5088d0a68e96559

SHA256
0b68cae078cfeaf9b897c31498823ae71d1634dfdecaea82bdeaf2b00993bdb3

SHA512
657f867fbdc3a279fac37968aae0ed099853f056abeddd8ae6bba1ea63a6ad8c025f1406e6e6db8266322674ebc09b054af923c851566786af5fa5d1ada90ef4

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/usr/bin/bsd-port/getty

Filesize
1.1MB

MD5
be9e6e33ce58d7572b0a089a9be20dd0

SHA1
5f3788156d48b1e1865a471a9a34019aa63f1a1b

SHA256
1ea1b4edcc7e1ba2ba0e549ff3fcdd35efabd69f4e671b905a7d38ec97a7d9d9

SHA512
8b20ab73a1aa5ad3c1cf09af600e538cfb519a509c599ea76a6b07189d04e679112e2c273ed2e8ae1de677af614c74b4332ab973542e0c6bb8d5b5968aa97b07

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/usr/bin/dpkgd/lsof

Filesize
163KB

MD5
ab57b66cc531ae0f996963223e632b60

SHA1
bf7e5becd33f21c2539f5a75ffa0ab61c49c8795

SHA256
2484863a7bfda7f97b90bfd5dfceed4ec9f27dd51f9c5158c8daabbf4309b1df

SHA512
908acef13f3c1d80b7169ec3b16bb67006013453348fff75550bc3c6c2137e798b21d7990edbd5be63d756d9c41b06160aebf38aa80547e4bafa3a62596057f6

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/usr/bin/dpkgd/ps

Filesize
138KB

MD5
8146139c2ad7e550b1d1f49480997446

SHA1
074db8890c3227bd8a588417f5b9bde637bcf3af

SHA256
207df9d438f75185ab3af2ab1173d104831a6631c28ef40d38b2ab43de27b40f

SHA512
b6d71d537f593b9af833e6f798e412e95fc486a313414ed8cca9639f61be7ac9dca700e9f861c0d07c7f65b3783127a67f829f422472cad8938ba01d397ab9de

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads