mrblack | 59883c11aa8c0c703b3fc5338a00c90dd79d374f7c3ef214e6f217e601ff4742

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
30-07-2024 13:28

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General

Target

714e87aa41eaacdfa4db58f2a5ff1fd7_JaffaCakes118
Size

1.5MB
MD5

714e87aa41eaacdfa4db58f2a5ff1fd7
SHA1

5e3cde5a8503c727bcb781ffb657b89cf2ec9c37
SHA256

59883c11aa8c0c703b3fc5338a00c90dd79d374f7c3ef214e6f217e601ff4742
SHA512

e80800713412589a0b2fb70b4759d0ce93fc3db0e7984fee9c2b2ddf6faffc6b2f3792bd219aa8687374dada2e2218fa4ad3fdd98c9b02a52578691d6f112226
SSDEEP

24576:GA46TrzJBisiOvhlOHdSbQmHyJgf/kgX0Exb2cyaGpIoiMynnLmYXqSYKKZdTrnD:zRNi6OHdSbQoyJyXpxb2PaGpXiMynLmB

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	1596	getty
/usr/bin/.sshd	1604	.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	714e87aa41eaacdfa4db58f2a5ff1fd7_JaffaCakes118
File opened for modification	/etc/init.d/selinux	getty

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/getty.lock	714e87aa41eaacdfa4db58f2a5ff1fd7_JaffaCakes118
File opened for modification	/usr/bin/dpkgd/lsof	cp
File opened for modification	/usr/bin/lsof	cp
File opened for modification	/usr/bin/bsd-port/udevd.lock	714e87aa41eaacdfa4db58f2a5ff1fd7_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/bsd-port/getty.lock	getty
File opened for modification	/usr/bin/dpkgd/ps	cp
File opened for modification	/usr/bin/ps	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	714e87aa41eaacdfa4db58f2a5ff1fd7_JaffaCakes118
File opened for reading	/proc/cpuinfo	getty

Reads system network configuration 1 TTPs 2 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	714e87aa41eaacdfa4db58f2a5ff1fd7_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	mkdir
File opened for reading	/proc/stat	getty
File opened for reading	/proc/cmdline	insmod
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/filesystems	cp
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/meminfo	getty
File opened for reading	/proc/cmdline	insmod
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/sys/kernel/version	getty
File opened for reading	/proc/stat	714e87aa41eaacdfa4db58f2a5ff1fd7_JaffaCakes118
File opened for reading	/proc/sys/kernel/version	.sshd
File opened for reading	/proc/meminfo	714e87aa41eaacdfa4db58f2a5ff1fd7_JaffaCakes118
File opened for reading	/proc/sys/kernel/version	714e87aa41eaacdfa4db58f2a5ff1fd7_JaffaCakes118
File opened for reading	/proc/filesystems	mkdir
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/filesystems	cp
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/filesystems	cp

Writes file to tmp directory 7 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/gates.lock	714e87aa41eaacdfa4db58f2a5ff1fd7_JaffaCakes118
File opened for modification	/tmp/notify.file	714e87aa41eaacdfa4db58f2a5ff1fd7_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	714e87aa41eaacdfa4db58f2a5ff1fd7_JaffaCakes118
File opened for modification	/tmp/bill.lock	714e87aa41eaacdfa4db58f2a5ff1fd7_JaffaCakes118

/tmp/714e87aa41eaacdfa4db58f2a5ff1fd7_JaffaCakes118
/tmp/714e87aa41eaacdfa4db58f2a5ff1fd7_JaffaCakes118
1⤵
- Modifies init.d
- Write file to user bin folder
- Checks CPU configuration
- Reads system network configuration
- Reads runtime system information
- Writes file to tmp directory
PID:1569
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt"
  2⤵
  PID:1580
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt
    3⤵
    PID:1581
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt"
  2⤵
  PID:1582
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt
    3⤵
    PID:1583
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt"
  2⤵
  PID:1584
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt
    3⤵
    PID:1585
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt"
  2⤵
  PID:1586
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt
    3⤵
    PID:1587
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt"
  2⤵
  PID:1588
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt
    3⤵
    PID:1589
- /bin/sh
  sh -c "mkdir -p /usr/bin/bsd-port"
  2⤵
  PID:1590
- - /usr/bin/mkdir
    mkdir -p /usr/bin/bsd-port
    3⤵
    - Reads runtime system information
    PID:1591
- /bin/sh
  sh -c "cp -f /tmp/714e87aa41eaacdfa4db58f2a5ff1fd7_JaffaCakes118 /usr/bin/bsd-port/getty"
  2⤵
  PID:1592
- - /usr/bin/cp
    cp -f /tmp/714e87aa41eaacdfa4db58f2a5ff1fd7_JaffaCakes118 /usr/bin/bsd-port/getty
    3⤵
    - Write file to user bin folder
    - Reads runtime system information
    PID:1593
- /bin/sh
  sh -c /usr/bin/bsd-port/getty
  2⤵
  PID:1595
- - /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:1596
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"
      4⤵
      PID:1616
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
        5⤵
        
        PID:1617
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"
      4⤵
      PID:1618
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
        5⤵
        
        PID:1619
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"
      4⤵
      PID:1620
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
        5⤵
        
        PID:1621
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"
      4⤵
      PID:1622
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
        5⤵
        
        PID:1623
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"
      4⤵
      PID:1624
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
        5⤵
        
        PID:1625
  - - /bin/sh
      sh -c "mkdir -p /usr/bin/dpkgd"
      4⤵
      PID:1626
    - - /usr/bin/mkdir
        
        mkdir -p /usr/bin/dpkgd
        5⤵
        Reads runtime system information
        
        PID:1627
  - - /bin/sh
      sh -c "cp -f /bin/lsof /usr/bin/dpkgd/lsof"
      4⤵
      PID:1628
    - - /usr/bin/cp
        
        cp -f /bin/lsof /usr/bin/dpkgd/lsof
        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/getty /bin/lsof"
      4⤵
      PID:1632
    - - /usr/bin/cp
        
        cp -f /usr/bin/bsd-port/getty /bin/lsof
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1633
  - - /bin/sh
      sh -c "chmod 0755 /bin/lsof"
      4⤵
      PID:1634
    - - /usr/bin/chmod
        
        chmod 0755 /bin/lsof
        5⤵
        
        PID:1635
  - - /bin/sh
      sh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"
      4⤵
      PID:1636
    - - /usr/bin/cp
        
        cp -f /bin/ps /usr/bin/dpkgd/ps
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1637
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1639
    - - /usr/bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1641
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /bin/ps"
      4⤵
      PID:1642
    - - /usr/bin/cp
        
        cp -f /usr/bin/bsd-port/getty /bin/ps
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1643
  - - /bin/sh
      sh -c "chmod 0755 /bin/ps"
      4⤵
      PID:1644
    - - /usr/bin/chmod
        
        chmod 0755 /bin/ps
        5⤵
        
        PID:1645
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1646
    - - /usr/bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1647
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /usr/bin/lsof"
      4⤵
      PID:1648
    - - /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:1649
  - - /bin/sh
      sh -c "chmod 0755 /usr/bin/lsof"
      4⤵
      PID:1650
    - - /usr/bin/chmod
        
        chmod 0755 /usr/bin/lsof
        5⤵
        
        PID:1651
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1652
    - - /usr/bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1653
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /usr/bin/ps"
      4⤵
      PID:1654
    - - /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:1655
  - - /bin/sh
      sh -c "chmod 0755 /usr/bin/ps"
      4⤵
      PID:1656
    - - /usr/bin/chmod
        
        chmod 0755 /usr/bin/ps
        5⤵
        
        PID:1657
  - - /bin/sh
      sh -c "insmod /usr/lib/xpacket.ko"
      4⤵
      PID:1658
    - - /usr/sbin/insmod
        
        insmod /usr/lib/xpacket.ko
        5⤵
        Reads runtime system information
        
        PID:1659
- /bin/sh
  sh -c "mkdir -p /usr/bin"
  2⤵
  PID:1598
- - /usr/bin/mkdir
    mkdir -p /usr/bin
    3⤵
    - Reads runtime system information
    PID:1599
- /bin/sh
  sh -c "cp -f /tmp/714e87aa41eaacdfa4db58f2a5ff1fd7_JaffaCakes118 /usr/bin/.sshd"
  2⤵
  PID:1600
- - /usr/bin/cp
    cp -f /tmp/714e87aa41eaacdfa4db58f2a5ff1fd7_JaffaCakes118 /usr/bin/.sshd
    3⤵
    - Write file to user bin folder
    - Reads runtime system information
    PID:1601
- /bin/sh
  sh -c /usr/bin/.sshd
  2⤵
  PID:1603
- - /usr/bin/.sshd
    /usr/bin/.sshd
    3⤵
    - Executes dropped EXE
    - Reads runtime system information
    - Writes file to tmp directory
    PID:1604
- /bin/sh
  sh -c "insmod /usr/lib/xpacket.ko"
  2⤵
  PID:1606
- - /usr/sbin/insmod
    insmod /usr/lib/xpacket.ko
    3⤵
    - Reads runtime system information
    PID:1607

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
6f81a43b1efc1abfa9c6a1bfd1eb6b81

SHA1
06fee278dfaa0f887c95e27d23e1c00e76208f3f

SHA256
9a9c4935d812c235f89b64b50055d1ebc9830f49332e12d6cd96f58ae468c140

SHA512
629e2a89afc1a4002e6dc7c7a0b97eedfc0b0597f82d6fb970b3e7fedca30a626fcf203f7c85e2625651a7f48bf8548996ff181ed3bf9a23933c319463e6e0d0

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/etc/init.d/selinux

Filesize
36B

MD5
993cc15058142d96c3daf7852c3d5ee8

SHA1
0950b8b391b04dd3895ea33cd3141543ebd2525d

SHA256
8171d077918611803d93088409f220c66fae1c670b297e1aa5d8cbd548ce9208

SHA512
0c4256c00a3710f97e92581b552682b36b62afc35fe72622c491323c618c19ea62611ac04ccafc3dfcde2254a2ebbd93b69b66795b16e36332293bed83adb928

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/tmp/gates.lock

Filesize
4B

MD5
7949e456002b28988d38185bd30e77fd

SHA1
8eac9d03673ad3fa86c1c815275470ec81580e0a

SHA256
3a481e728390d89c6843c180dc18ca8d693de5f5421e6240711c5dad483c72b3

SHA512
86ffa374c2572cf61c670ec5469b80a9f71db097a87e45393aac98ac96a1c019325f360ccbaa6509acd366045c871b0e2ce76503942603228cf87b5c18105586

Download Submit
/tmp/moni.lock

Filesize
4B

MD5
f18a6d1cde4b205199de8729a6637b42

SHA1
2fdd02f8f1222ac5b66ec221c8ff66d62695b11c

SHA256
5909daa6fb5cf239d52027367f111ecd9c280866d73f8bd47cda43ef5495af6a

SHA512
3407704df3075afe3710ea8c7b64a54f572e311c24de4299fafb95203ac100326b1a9aec57289285ad641b51de049eb2b3ee66180b74c7bfda1b82b8664b9fc2

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/tmp/notify.file

Filesize
51B

MD5
dbf5045a24ccaea770f56d8304afb6fa

SHA1
4d54fef90b9363e96c86491b1cd8ef58778993dc

SHA256
00af843cb25afe1a668f86ca8b70dc7dec720da89a7578a4f6ca329aa3280ce9

SHA512
45b9fdae6e49d52aa260efe94686c46c1fc0c9340187522b9b3525021f09b71b83b1fccde6b36974f916b7e465559bbd3c8d0c756284dedc9233199b05a5850e

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

Filesize
1.5MB

MD5
714e87aa41eaacdfa4db58f2a5ff1fd7

SHA1
5e3cde5a8503c727bcb781ffb657b89cf2ec9c37

SHA256
59883c11aa8c0c703b3fc5338a00c90dd79d374f7c3ef214e6f217e601ff4742

SHA512
e80800713412589a0b2fb70b4759d0ce93fc3db0e7984fee9c2b2ddf6faffc6b2f3792bd219aa8687374dada2e2218fa4ad3fdd98c9b02a52578691d6f112226

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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