mrblack | c6671cc274dd02cbd1fe40f56e6ce819634a47ede993e98ad346b3e576f9ee9a

Analysis

max time kernel
149s
max time network
156s
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
30-07-2024 15:38

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General

Target

77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118
Size

1.5MB
MD5

77e67ae01d141d95eae25515ffa3f6eb
SHA1

5d369c6bfc84aaffd9f7596c53464a3b1e9e7a50
SHA256

c6671cc274dd02cbd1fe40f56e6ce819634a47ede993e98ad346b3e576f9ee9a
SHA512

5c65d540b8a19d6daf9a4a4faf051d2d4c1253bd8bc09e80118cd8bcca520e13b36077d848800a738596d13730955727bc6f46ae2bf19a467e7af8d2fcecc306
SSDEEP

24576:GA46TrzJBisiOvhlOHdSbQmHyJgf/kgX0Exb2cyaGpIoiMvnnLmYXqSYKKZdTrnD:zRNi6OHdSbQoyJyXpxb2PaGpXiMvnLmB

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	1625	getty
/usr/bin/.sshd	1633	.sshd

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	77e67ae01d141d95eae25515ffa3f6eb_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	77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118

Write file to user bin folder 1 TTPs 9 IoCs

Hijack Execution Flow

T1574

description	ioc	Process
File opened for modification	/usr/bin/bsd-port/udevd.lock	77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118
File opened for modification	/usr/bin/bsd-port/getty	cp
File opened for modification	/usr/bin/.sshd	cp
File opened for modification	/usr/bin/dpkgd/lsof	cp
File opened for modification	/usr/bin/ps	cp
File opened for modification	/usr/bin/bsd-port/getty.lock	77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118
File opened for modification	/usr/bin/bsd-port/getty.lock	getty
File opened for modification	/usr/bin/dpkgd/ps	cp
File opened for modification	/usr/bin/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	77e67ae01d141d95eae25515ffa3f6eb_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	getty
File opened for reading	/proc/net/dev	77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118
File opened for reading	/proc/net/route	77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118
File opened for reading	/proc/net/arp	77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118

Reads runtime system information 24 IoCs

Reads data from /proc virtual filesystem.

description	ioc	Process
File opened for reading	/proc/sys/kernel/version	.sshd
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/sys/kernel/version	getty
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	cp
File opened for reading	/proc/stat	getty
File opened for reading	/proc/sys/kernel/version	77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/meminfo	77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118
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	cp
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/cmdline	insmod
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/stat	77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118
File opened for reading	/proc/meminfo	getty

Writes file to tmp directory 8 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/notify.file	77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118
File opened for modification	/tmp/conf.n	77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118
File opened for modification	/tmp/moni.lock	.sshd
File opened for modification	/tmp/notify.file	.sshd
File opened for modification	/tmp/gates.lock	.sshd
File opened for modification	/tmp/moni.lock	77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118
File opened for modification	/tmp/bill.lock	77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118
File opened for modification	/tmp/gates.lock	77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118

/tmp/77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118
/tmp/77e67ae01d141d95eae25515ffa3f6eb_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:1597
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt"
  2⤵
  PID:1609
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt
    3⤵
    PID:1610
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt"
  2⤵
  PID:1611
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt
    3⤵
    PID:1612
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt"
  2⤵
  PID:1613
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt
    3⤵
    PID:1614
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt"
  2⤵
  PID:1615
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt
    3⤵
    PID:1616
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt"
  2⤵
  PID:1617
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt
    3⤵
    PID:1618
- /bin/sh
  sh -c "mkdir -p /usr/bin/bsd-port"
  2⤵
  PID:1619
- - /usr/bin/mkdir
    mkdir -p /usr/bin/bsd-port
    3⤵
    - Reads runtime system information
    PID:1620
- /bin/sh
  sh -c "cp -f /tmp/77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118 /usr/bin/bsd-port/getty"
  2⤵
  PID:1621
- - /usr/bin/cp
    cp -f /tmp/77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118 /usr/bin/bsd-port/getty
    3⤵
    - Write file to user bin folder
    - Reads runtime system information
    PID:1622
- /bin/sh
  sh -c /usr/bin/bsd-port/getty
  2⤵
  PID:1624
- - /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:1625
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"
      4⤵
      PID:1645
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
        5⤵
        
        PID:1646
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"
      4⤵
      PID:1647
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
        5⤵
        
        PID:1648
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"
      4⤵
      PID:1649
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
        5⤵
        
        PID:1650
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"
      4⤵
      PID:1651
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
        5⤵
        
        PID:1652
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"
      4⤵
      PID:1653
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
        5⤵
        
        PID:1654
  - - /bin/sh
      sh -c "mkdir -p /usr/bin/dpkgd"
      4⤵
      PID:1655
    - - /usr/bin/mkdir
        
        mkdir -p /usr/bin/dpkgd
        5⤵
        Reads runtime system information
        
        PID:1656
  - - /bin/sh
      sh -c "cp -f /bin/lsof /usr/bin/dpkgd/lsof"
      4⤵
      PID:1657
    - - /usr/bin/cp
        
        cp -f /bin/lsof /usr/bin/dpkgd/lsof
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1658
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1659
    - - /usr/bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1660
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /bin/lsof"
      4⤵
      PID:1661
    - - /usr/bin/cp
        
        cp -f /usr/bin/bsd-port/getty /bin/lsof
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1662
  - - /bin/sh
      sh -c "chmod 0755 /bin/lsof"
      4⤵
      PID:1663
    - - /usr/bin/chmod
        
        chmod 0755 /bin/lsof
        5⤵
        
        PID:1664
  - - /bin/sh
      sh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"
      4⤵
      PID:1665
    - - /usr/bin/cp
        
        cp -f /bin/ps /usr/bin/dpkgd/ps
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1666
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1669
    - - /usr/bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1670
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /bin/ps"
      4⤵
      PID:1671
    - - /usr/bin/cp
        
        cp -f /usr/bin/bsd-port/getty /bin/ps
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1672
  - - /bin/sh
      sh -c "chmod 0755 /bin/ps"
      4⤵
      PID:1673
    - - /usr/bin/chmod
        
        chmod 0755 /bin/ps
        5⤵
        
        PID:1674
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1675
    - - /usr/bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1676
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /usr/bin/lsof"
      4⤵
      PID:1677
    - - /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:1678
  - - /bin/sh
      sh -c "chmod 0755 /usr/bin/lsof"
      4⤵
      PID:1679
    - - /usr/bin/chmod
        
        chmod 0755 /usr/bin/lsof
        5⤵
        
        PID:1680
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1681
    - - /usr/bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1682
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /usr/bin/ps"
      4⤵
      PID:1683
    - - /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:1684
  - - /bin/sh
      sh -c "chmod 0755 /usr/bin/ps"
      4⤵
      PID:1685
    - - /usr/bin/chmod
        
        chmod 0755 /usr/bin/ps
        5⤵
        
        PID:1686
  - - /bin/sh
      sh -c "insmod /usr/lib/xpacket.ko"
      4⤵
      PID:1687
    - - /usr/sbin/insmod
        
        insmod /usr/lib/xpacket.ko
        5⤵
        Reads runtime system information
        
        PID:1688
- /bin/sh
  sh -c "mkdir -p /usr/bin"
  2⤵
  PID:1627
- - /usr/bin/mkdir
    mkdir -p /usr/bin
    3⤵
    - Reads runtime system information
    PID:1628
- /bin/sh
  sh -c "cp -f /tmp/77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118 /usr/bin/.sshd"
  2⤵
  PID:1629
- - /usr/bin/cp
    cp -f /tmp/77e67ae01d141d95eae25515ffa3f6eb_JaffaCakes118 /usr/bin/.sshd
    3⤵
    - Write file to user bin folder
    - Reads runtime system information
    PID:1630
- /bin/sh
  sh -c /usr/bin/.sshd
  2⤵
  PID:1632
- - /usr/bin/.sshd
    /usr/bin/.sshd
    3⤵
    - Executes dropped EXE
    - Reads runtime system information
    - Writes file to tmp directory
    PID:1633
- /bin/sh
  sh -c "insmod /usr/lib/xpacket.ko"
  2⤵
  PID:1635
- - /usr/sbin/insmod
    insmod /usr/lib/xpacket.ko
    3⤵
    - Reads runtime system information
    PID:1636

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
0151ad13831c4b984333b394e31ee14e

SHA1
db6bee5ed9d5f9aee69dba4c7590d68274572486

SHA256
a8cfd55abcf517aeb8e02ded31e5252ce3889c915e5c7baf6fe5b349f8f4dc33

SHA512
a77f8a2a90c9d5bbc073487fb700cd8c5ff64ea41feb85cbbbba6c69ae207d996094cf43683c0ee8c5b59d7f026cd52caedf42b368dfc947a4f20f148f63a1fc

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
e084c3ab43cf461f393e03eae961e866

SHA1
c55f0429e636ae475c96ba9a1b6f49cd8ac4970f

SHA256
3bea0ab298e1a9b7be6e333724fd7c49319864d665841d4b2d9c296fbf0f524f

SHA512
7bccfcffb8fc65a419b3c2e0332a2bf7745a0c4244b733b407b2373676e75cf5f5ada4593e6996d10d1fc96156ad919af51f8a1408bdaee4167d37478fc2a465

Download Submit
/tmp/gates.lock

Filesize
4B

MD5
9c19a2aa1d84e04b0bd4bc888792bd1e

SHA1
037880d210451b590c3a5229ea350645724e7e15

SHA256
191024c47d6c2b3c24a570326b7e29f09652ec8bc2bb1779d95783e8753d12db

SHA512
fbc7830e289b19696b7b6e01ae6d7e5403d144d417e380e47c29ea17db59c765ae7aa4a47cf885b6af0df831a8c98d5f99a40c35d121854ba273dd4afab24f93

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/tmp/moni.lock

Filesize
4B

MD5
6dd4e10e3296fa63738371ec0d5df818

SHA1
85755d7d0254a5e590031354dc5984ffeff70d4d

SHA256
ca05bc2bf73745fee2f3d493297d4f90930477b484d2c08d7dc899d9a574de89

SHA512
ceb236b8a132ee3fdd99086a8c614af028f94114bd93e623131b93a5b8439a151f3984a230622d8c9d3a1ca1f6ed6d37f78e9dcd71839dda7bad510c1428d661

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/tmp/notify.file

Filesize
51B

MD5
36280ca74df4573c09d13ee6140214f2

SHA1
f2909c47138faf7cabf358a66db879847ad69977

SHA256
4f8bdb54bbe98ac6d9b6e6204ad5188704a73ce25d5b87b42aae8904011137a4

SHA512
23ec95d685f07d0e1bf7c55b57336b532e57060711bba448f8c2aa9e9a418484c8b4c415a6681a66b75bbc740c008ec0a447c5d76a1d4d769435991639ed5ffa

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/usr/bin/bsd-port/getty

Filesize
1.5MB

MD5
77e67ae01d141d95eae25515ffa3f6eb

SHA1
5d369c6bfc84aaffd9f7596c53464a3b1e9e7a50

SHA256
c6671cc274dd02cbd1fe40f56e6ce819634a47ede993e98ad346b3e576f9ee9a

SHA512
5c65d540b8a19d6daf9a4a4faf051d2d4c1253bd8bc09e80118cd8bcca520e13b36077d848800a738596d13730955727bc6f46ae2bf19a467e7af8d2fcecc306

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/usr/bin/dpkgd/lsof

Filesize
163KB

MD5
ab57b66cc531ae0f996963223e632b60

SHA1
bf7e5becd33f21c2539f5a75ffa0ab61c49c8795

SHA256
2484863a7bfda7f97b90bfd5dfceed4ec9f27dd51f9c5158c8daabbf4309b1df

SHA512
908acef13f3c1d80b7169ec3b16bb67006013453348fff75550bc3c6c2137e798b21d7990edbd5be63d756d9c41b06160aebf38aa80547e4bafa3a62596057f6

Download Submit
/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