mrblack | 5ed4f4153647ba4ba860a06b80748786524a6c923f7323fac9e0033faa673682

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
29-07-2024 20:57

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General

Target

5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118
Size

1.1MB
MD5

5fb3a167cd8e1d7bf2fa5aba1885d6fe
SHA1

f41e8f5d9bf939d06ce68e0178200af96ec0752b
SHA256

5ed4f4153647ba4ba860a06b80748786524a6c923f7323fac9e0033faa673682
SHA512

21767a0fdf7953d9ffc592cee989cf0796bb31fc2916dd3c0de8eaa62c5a1a61a9fcaffa1fa9134d6918a139ec5f69634c394752024d1371a5fb35fae1aed294
SSDEEP

24576:4vRE7caCfKGPqVEDNLFxKsfajI+gIGYuuCol7r:4vREKfPqVE5jKsfajRHGVo7r

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/knerl	1590	knerl
/usr/bin/.sshd	1598	.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/QsystemsshMmt	5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118
File opened for modification	/etc/init.d/selinux	knerl

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	5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118

Write file to user bin folder 1 TTPs 9 IoCs

Hijack Execution Flow

T1574

description	ioc	Process
File opened for modification	/usr/bin/dpkgd/lsof	cp
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/udevd.conf	5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118
File opened for modification	/usr/bin/bsd-port/knerl	cp
File opened for modification	/usr/bin/bsd-port/knerl.conf	knerl
File opened for modification	/usr/bin/bsd-port/knerl.conf	5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118
File opened for modification	/usr/bin/.sshd	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	5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118
File opened for reading	/proc/cpuinfo	knerl

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	5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118
File opened for reading	/proc/net/route	5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118
File opened for reading	/proc/net/arp	5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118
File opened for reading	/proc/net/dev	knerl

Reads runtime system information 24 IoCs

Reads data from /proc virtual filesystem.

description	ioc	Process
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/sys/kernel/version	5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118
File opened for reading	/proc/filesystems	mkdir
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/meminfo	5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118
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/meminfo	knerl
File opened for reading	/proc/cmdline	insmod
File opened for reading	/proc/sys/kernel/version	knerl
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	mkdir
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/stat	knerl
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/sys/kernel/version	.sshd
File opened for reading	/proc/stat	5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118

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	.sshd
File opened for modification	/tmp/Dest.cfg	.sshd
File opened for modification	/tmp/appq.log	5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118
File opened for modification	/tmp/appq.conf	5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118
File opened for modification	/tmp/Dest.cfg	5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118
File opened for modification	/tmp/notify.file	5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118
File opened for modification	/tmp/conf.n	5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118
File opened for modification	/tmp/appq.log	.sshd

/tmp/5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118
/tmp/5fb3a167cd8e1d7bf2fa5aba1885d6fe_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:1559
- /bin/sh
  sh -c "ln -s /etc/init.d/QsystemsshMmt /etc/rc1.d/S97QsystemsshMmt"
  2⤵
  PID:1574
- - /usr/bin/ln
    ln -s /etc/init.d/QsystemsshMmt /etc/rc1.d/S97QsystemsshMmt
    3⤵
    PID:1575
- /bin/sh
  sh -c "ln -s /etc/init.d/QsystemsshMmt /etc/rc2.d/S97QsystemsshMmt"
  2⤵
  PID:1576
- - /usr/bin/ln
    ln -s /etc/init.d/QsystemsshMmt /etc/rc2.d/S97QsystemsshMmt
    3⤵
    PID:1577
- /bin/sh
  sh -c "ln -s /etc/init.d/QsystemsshMmt /etc/rc3.d/S97QsystemsshMmt"
  2⤵
  PID:1578
- - /usr/bin/ln
    ln -s /etc/init.d/QsystemsshMmt /etc/rc3.d/S97QsystemsshMmt
    3⤵
    PID:1579
- /bin/sh
  sh -c "ln -s /etc/init.d/QsystemsshMmt /etc/rc4.d/S97QsystemsshMmt"
  2⤵
  PID:1580
- - /usr/bin/ln
    ln -s /etc/init.d/QsystemsshMmt /etc/rc4.d/S97QsystemsshMmt
    3⤵
    PID:1581
- /bin/sh
  sh -c "ln -s /etc/init.d/QsystemsshMmt /etc/rc5.d/S97QsystemsshMmt"
  2⤵
  PID:1582
- - /usr/bin/ln
    ln -s /etc/init.d/QsystemsshMmt /etc/rc5.d/S97QsystemsshMmt
    3⤵
    PID:1583
- /bin/sh
  sh -c "mkdir -p /usr/bin/bsd-port"
  2⤵
  PID:1584
- - /usr/bin/mkdir
    mkdir -p /usr/bin/bsd-port
    3⤵
    - Reads runtime system information
    PID:1585
- /bin/sh
  sh -c "cp -f /tmp/5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118 /usr/bin/bsd-port/knerl"
  2⤵
  PID:1586
- - /usr/bin/cp
    cp -f /tmp/5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118 /usr/bin/bsd-port/knerl
    3⤵
    - Write file to user bin folder
    - Reads runtime system information
    PID:1587
- /bin/sh
  sh -c /usr/bin/bsd-port/knerl
  2⤵
  PID:1589
- - /usr/bin/bsd-port/knerl
    /usr/bin/bsd-port/knerl
    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:1590
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"
      4⤵
      PID:1605
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
        5⤵
        
        PID:1606
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"
      4⤵
      PID:1607
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
        5⤵
        
        PID:1608
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"
      4⤵
      PID:1609
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
        5⤵
        
        PID:1610
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"
      4⤵
      PID:1611
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
        5⤵
        
        PID:1613
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"
      4⤵
      PID:1614
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
        5⤵
        
        PID:1615
  - - /bin/sh
      sh -c "mkdir -p /usr/bin/dpkgd"
      4⤵
      PID:1616
    - - /usr/bin/mkdir
        
        mkdir -p /usr/bin/dpkgd
        5⤵
        Reads runtime system information
        
        PID:1617
  - - /bin/sh
      sh -c "cp -f /bin/lsof /usr/bin/dpkgd/lsof"
      4⤵
      PID:1618
    - - /usr/bin/cp
        
        cp -f /bin/lsof /usr/bin/dpkgd/lsof
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1619
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1621
    - - /usr/bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1622
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/knerl /bin/lsof"
      4⤵
      PID:1623
    - - /usr/bin/cp
        
        cp -f /usr/bin/bsd-port/knerl /bin/lsof
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1624
  - - /bin/sh
      sh -c "chmod 0755 /bin/lsof"
      4⤵
      PID:1626
    - - /usr/bin/chmod
        
        chmod 0755 /bin/lsof
        5⤵
        
        PID:1627
  - - /bin/sh
      sh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"
      4⤵
      PID:1628
    - - /usr/bin/cp
        
        cp -f /bin/ps /usr/bin/dpkgd/ps
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1629
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1630
    - - /usr/bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1631
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/knerl /bin/ps"
      4⤵
      PID:1632
    - - /usr/bin/cp
        
        cp -f /usr/bin/bsd-port/knerl /bin/ps
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1633
  - - /bin/sh
      sh -c "chmod 0755 /bin/ps"
      4⤵
      PID:1635
    - - /usr/bin/chmod
        
        chmod 0755 /bin/ps
        5⤵
        
        PID:1636
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1637
    - - /usr/bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1638
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/knerl /usr/bin/lsof"
      4⤵
      PID:1639
    - - /usr/bin/cp
        
        cp -f /usr/bin/bsd-port/knerl /usr/bin/lsof
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1640
  - - /bin/sh
      sh -c "chmod 0755 /usr/bin/lsof"
      4⤵
      PID:1641
    - - /usr/bin/chmod
        
        chmod 0755 /usr/bin/lsof
        5⤵
        
        PID:1642
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1643
    - - /usr/bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1644
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/knerl /usr/bin/ps"
      4⤵
      PID:1646
    - - /usr/bin/cp
        
        cp -f /usr/bin/bsd-port/knerl /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 /usr/bin"
  2⤵
  PID:1592
- - /usr/bin/mkdir
    mkdir -p /usr/bin
    3⤵
    - Reads runtime system information
    PID:1593
- /bin/sh
  sh -c "cp -f /tmp/5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118 /usr/bin/.sshd"
  2⤵
  PID:1594
- - /usr/bin/cp
    cp -f /tmp/5fb3a167cd8e1d7bf2fa5aba1885d6fe_JaffaCakes118 /usr/bin/.sshd
    3⤵
    - Write file to user bin folder
    - Reads runtime system information
    PID:1595
- /bin/sh
  sh -c /usr/bin/.sshd
  2⤵
  PID:1597
- - /usr/bin/.sshd
    /usr/bin/.sshd
    3⤵
    - Executes dropped EXE
    - Reads runtime system information
    - Writes file to tmp directory
    PID:1598
- /bin/sh
  sh -c "insmod /usr/lib/xpacket.ko"
  2⤵
  PID:1600
- - /usr/sbin/insmod
    insmod /usr/lib/xpacket.ko
    3⤵
    - Reads runtime system information
    PID:1601

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/QsystemsshMmt

Filesize
64B

MD5
5422f34fc81d5be76c3a9e0340981ca7

SHA1
4c2525452e689c74d35249ff22d1ec162a3e8984

SHA256
6fd625405f72afb1426780779d745643320714dd6e7c3c0110e8b75ca6d6f58a

SHA512
e940453072b66f9f7ca2fc83588defb676cd6165878054537e86a6ba344fcebbadd5be5fa6f169699e9a6c722f1d7ef3489515848b30c13a5e7c8972b811c9fe

Download Submit
/etc/init.d/selinux

Filesize
36B

MD5
caa27b819c9303446f702929874a00e8

SHA1
d24199c0e376edea3f822b215148cc0dc78364bf

SHA256
da9b535a14c6d9152857e211f14fb8da9056e84ba1b8d4dc27ab79c98264050b

SHA512
dcd9413eb2cb24d77f637edfc00ca0bb42229a1a3b0d84e29eff94a7b91aee6ee8c126c286a4b4103e01834d1c6aec9de09ffab3927e8de8015421005f31446e

Download Submit
/tmp/Dest.cfg

Filesize
4B

MD5
3a20f62a0af1aa152670bab3c602feed

SHA1
062dd0f773cd5999a09714a371e1f8017163e2a1

SHA256
c649b15e769148e6b199b7a671140d60c77847fce6fe17277723dc91f0b27d4c

SHA512
419f66b1afde60779300c3cb662c238c1bfad252c9db934512fa5af99f598c27dffdb1b3514fc254dc947a0080a0484a84ff12ed9aae5ca491091fec39989b86

Download Submit
/tmp/conf.n

Filesize
69B

MD5
98f7868b1d672db13c553f8961abc70d

SHA1
591895eb33e70d40cf634980b573c9bbdc5f25c7

SHA256
19725ae3b1111de5679167fe037808ba436dccc5a742bd388ed4c5159539542a

SHA512
413a0fb82873659678b9dfbfc93ffdc39562bb3b7f4ab387e4e17586fc9a5eeb43a09f9f68fe44d16d9167cce3a48f2ae09bea10d2f1db141668a1fb57ea9560

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/tmp/notify.file

Filesize
51B

MD5
3f70f7496dbe61a06bf3c44852611c21

SHA1
7643042a6bcaf2d76e4572ce4f5a4329c5bc0742

SHA256
cf16c0c8501cf4423d20ef42e979d980b93adfc8c3b6460f69c2e8d3cf8a462c

SHA512
62d915af249f6b49527fd4d6e2c30b7d5ab429ba8d3f7d2d63ca7f44bf9d4cda8902173fc8ce4201cd3abc0d98bdd5f801e327ddd038b586a918c20b92a4adac

Download Submit
/usr/bin/bsd-port/knerl

Filesize
1.1MB

MD5
5fb3a167cd8e1d7bf2fa5aba1885d6fe

SHA1
f41e8f5d9bf939d06ce68e0178200af96ec0752b

SHA256
5ed4f4153647ba4ba860a06b80748786524a6c923f7323fac9e0033faa673682

SHA512
21767a0fdf7953d9ffc592cee989cf0796bb31fc2916dd3c0de8eaa62c5a1a61a9fcaffa1fa9134d6918a139ec5f69634c394752024d1371a5fb35fae1aed294

Download Submit
/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

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads