mrblack | 07b8a624ca7328d1409144fb0a9119952ed450fe3d1af67d3263814c5a0c7d41

Analysis

max time kernel
149s
max time network
140s
platform
ubuntu-18.04_amd64
resource
ubuntu1804-amd64-20240611-en
resource tags

arch:amd64arch:i386image:ubuntu1804-amd64-20240611-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
submitted
12-06-2024 13:27

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General

Target

a0d38111b414f4f206090fc09c775074_JaffaCakes118
Size

1.2MB
MD5

a0d38111b414f4f206090fc09c775074
SHA1

7071b17e1a57e9f76d15b25e2f8859793c4490ac
SHA256

07b8a624ca7328d1409144fb0a9119952ed450fe3d1af67d3263814c5a0c7d41
SHA512

4fda52fd2afed08341179907f8a5e4457e2db77f29769250df7f08f602ef92eaa305f45feb114b1ae21aa47fde91749dca4d980f24a3ad9be8009c8983678eda
SSDEEP

24576:e845rGHu6gVJKG75oFpA0VWeX4S2y1q2rJp0:745vRVJKGtSA0VWeohu9p0

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	1520	getty
/usr/bin/.sshd	1539	.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	a0d38111b414f4f206090fc09c775074_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	getty
File opened for modification	/usr/bin/.sshd	cp
File opened for modification	/usr/bin/dpkgd/ps	cp
File opened for modification	/usr/bin/dpkgd/ss	cp
File opened for modification	/usr/bin/bsd-port/getty.lock	a0d38111b414f4f206090fc09c775074_JaffaCakes118
File opened for modification	/usr/bin/bsd-port/udevd.lock	a0d38111b414f4f206090fc09c775074_JaffaCakes118
File opened for modification	/usr/bin/bsd-port/getty	cp
File opened for modification	/usr/bin/dpkgd/lsof	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/ps	cp
File opened for modification	/bin/ss	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	a0d38111b414f4f206090fc09c775074_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	a0d38111b414f4f206090fc09c775074_JaffaCakes118
File opened for reading	/proc/net/dev	getty

Reads runtime system information 25 IoCs

Reads data from /proc virtual filesystem.

description	ioc	Process
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/meminfo	a0d38111b414f4f206090fc09c775074_JaffaCakes118
File opened for reading	/proc/stat	getty
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	mkdir
File opened for reading	/proc/cmdline	insmod
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/meminfo	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	a0d38111b414f4f206090fc09c775074_JaffaCakes118
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/filesystems	cp
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	mkdir

Writes file to tmp directory 7 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/moni.lod	a0d38111b414f4f206090fc09c775074_JaffaCakes118
File opened for modification	/tmp/bill.lock	a0d38111b414f4f206090fc09c775074_JaffaCakes118
File opened for modification	/tmp/gates.lod	a0d38111b414f4f206090fc09c775074_JaffaCakes118
File opened for modification	/tmp/notify.file	a0d38111b414f4f206090fc09c775074_JaffaCakes118
File opened for modification	/tmp/moni.lod	.sshd
File opened for modification	/tmp/notify.file	.sshd
File opened for modification	/tmp/gates.lod	.sshd

/tmp/a0d38111b414f4f206090fc09c775074_JaffaCakes118
/tmp/a0d38111b414f4f206090fc09c775074_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:1480
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt"
  2⤵
  PID:1502
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt
    3⤵
    PID:1503
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt"
  2⤵
  PID:1504
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt
    3⤵
    PID:1505
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt"
  2⤵
  PID:1506
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt
    3⤵
    PID:1507
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt"
  2⤵
  PID:1508
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt
    3⤵
    PID:1509
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt"
  2⤵
  PID:1510
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt
    3⤵
    PID:1511
- /bin/sh
  sh -c "mkdir -p /usr/bin/bsd-port"
  2⤵
  PID:1512
- - /bin/mkdir
    mkdir -p /usr/bin/bsd-port
    3⤵
    - Reads runtime system information
    PID:1513
- /bin/sh
  sh -c "mkdir -p /usr/bin/bsd-port"
  2⤵
  PID:1514
- - /bin/mkdir
    mkdir -p /usr/bin/bsd-port
    3⤵
    - Reads runtime system information
    PID:1515
- /bin/sh
  sh -c "cp -f /tmp/a0d38111b414f4f206090fc09c775074_JaffaCakes118 /usr/bin/bsd-port/getty"
  2⤵
  PID:1516
- - /bin/cp
    cp -f /tmp/a0d38111b414f4f206090fc09c775074_JaffaCakes118 /usr/bin/bsd-port/getty
    3⤵
    - Write file to user bin folder
    - Reads runtime system information
    PID:1517
- /bin/sh
  sh -c /usr/bin/bsd-port/getty
  2⤵
  PID:1519
- - /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:1520
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"
      4⤵
      PID:1528
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
        5⤵
        
        PID:1529
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"
      4⤵
      PID:1530
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
        5⤵
        
        PID:1531
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"
      4⤵
      PID:1532
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
        5⤵
        
        PID:1533
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"
      4⤵
      PID:1534
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
        5⤵
        
        PID:1535
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"
      4⤵
      PID:1536
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
        5⤵
        
        PID:1540
  - - /bin/sh
      sh -c "mkdir -p /usr/bin/dpkgd"
      4⤵
      PID:1541
    - - /bin/mkdir
        
        mkdir -p /usr/bin/dpkgd
        5⤵
        Reads runtime system information
        
        PID:1542
  - - /bin/sh
      sh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"
      4⤵
      PID:1543
    - - /bin/cp
        
        cp -f /bin/ps /usr/bin/dpkgd/ps
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1544
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1545
    - - /bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1546
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1547
    - - /bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1548
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /bin/ps"
      4⤵
      PID:1549
    - - /bin/cp
        
        cp -f /usr/bin/bsd-port/getty /bin/ps
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1550
  - - /bin/sh
      sh -c "chmod 0755 /bin/ps"
      4⤵
      PID:1551
    - - /bin/chmod
        
        chmod 0755 /bin/ps
        5⤵
        
        PID:1552
  - - /bin/sh
      sh -c "cp -f /bin/ss /usr/bin/dpkgd/ss"
      4⤵
      PID:1553
    - - /bin/cp
        
        cp -f /bin/ss /usr/bin/dpkgd/ss
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1554
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1555
    - - /bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1556
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1557
    - - /bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1558
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /bin/ss"
      4⤵
      PID:1559
    - - /bin/cp
        
        cp -f /usr/bin/bsd-port/getty /bin/ss
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1560
  - - /bin/sh
      sh -c "chmod 0755 /bin/ss"
      4⤵
      PID:1563
    - - /bin/chmod
        
        chmod 0755 /bin/ss
        5⤵
        
        PID:1564
  - - /bin/sh
      sh -c "cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof"
      4⤵
      PID:1565
    - - /bin/cp
        
        cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1566
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1567
    - - /bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1568
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1569
    - - /bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1570
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /usr/bin/lsof"
      4⤵
      PID:1571
    - - /bin/cp
        
        cp -f /usr/bin/bsd-port/getty /usr/bin/lsof
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1572
  - - /bin/sh
      sh -c "chmod 0755 /usr/bin/lsof"
      4⤵
      PID:1573
    - - /bin/chmod
        
        chmod 0755 /usr/bin/lsof
        5⤵
        
        PID:1574
  - - /bin/sh
      sh -c "insmod /usr/bin/bsd-port/xpacket.ko"
      4⤵
      PID:1586
    - - /sbin/insmod
        
        insmod /usr/bin/bsd-port/xpacket.ko
        5⤵
        Reads runtime system information
        
        PID:1587
- /bin/sh
  sh -c "mkdir -p /usr/bin"
  2⤵
  PID:1522
- - /bin/mkdir
    mkdir -p /usr/bin
    3⤵
    - Reads runtime system information
    PID:1523
- /bin/sh
  sh -c "mkdir -p /usr/bin"
  2⤵
  PID:1524
- - /bin/mkdir
    mkdir -p /usr/bin
    3⤵
    - Reads runtime system information
    PID:1525
- /bin/sh
  sh -c "cp -f /tmp/a0d38111b414f4f206090fc09c775074_JaffaCakes118 /usr/bin/.sshd"
  2⤵
  PID:1526
- - /bin/cp
    cp -f /tmp/a0d38111b414f4f206090fc09c775074_JaffaCakes118 /usr/bin/.sshd
    3⤵
    - Write file to user bin folder
    - Reads runtime system information
    PID:1527
- /bin/sh
  sh -c /usr/bin/.sshd
  2⤵
  PID:1538
- - /usr/bin/.sshd
    /usr/bin/.sshd
    3⤵
    - Executes dropped EXE
    - Writes file to tmp directory
    PID:1539
- /bin/sh
  sh -c "insmod /tmp/xpacket.ko"
  2⤵
  PID:1575
- - /sbin/insmod
    insmod /tmp/xpacket.ko
    3⤵
    - Reads runtime system information
    PID:1576

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
c2ae18168d82edc605672268a862f601

SHA1
7fb00563b8c8232efe4d667b69a1b57cce9a8c28

SHA256
90fac397eb9e585ae0036ba4f1d7d4918acc12477555a42cb8f8b0430ec7b5d2

SHA512
9e79647816a6e0a8f4cb881d9c1ad835897022974f948fb447bf5689846771768ae95335c55475b619258eff08703ceb8b076342e0369feb838316571bd62271

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/etc/init.d/selinux

Filesize
36B

MD5
993cc15058142d96c3daf7852c3d5ee8

SHA1
0950b8b391b04dd3895ea33cd3141543ebd2525d

SHA256
8171d077918611803d93088409f220c66fae1c670b297e1aa5d8cbd548ce9208

SHA512
0c4256c00a3710f97e92581b552682b36b62afc35fe72622c491323c618c19ea62611ac04ccafc3dfcde2254a2ebbd93b69b66795b16e36332293bed83adb928

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/tmp/gates.lod

Filesize
4B

MD5
4e8412ad48562e3c9934f45c3e144d48

SHA1
7bf016f5b104573db99f54a0715d7f0fdf7705f4

SHA256
f525eef4f03ab81983392564bc44fea01267b8cd44fc5fd45f1974cb9a6bcd46

SHA512
f7a8033c1cfc1fea47a0b2b794d1f76ede673dc09250664b464c7591339d5e104a3caf2a0c970a378bd154cc1c7824306c048e1c50c9b90fab32a769aec09495

Download Submit
/tmp/moni.lod

Filesize
4B

MD5
b132ecc1609bfcf302615847c1caa69a

SHA1
0310477142171b7d67f2a1cd85c90a3b66be9c57

SHA256
8bcefa497af26e688b555d1c4c8cc97365522b5a1416ceb099a98b4c2ed80585

SHA512
816f74839aff001255a4e3fdbc354fd23aeaada1bbd44148e4fad015650143c818f741024cac050b6a4e22ce4d8d64b9591078a1d46d4776a6c51077b937bed0

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/tmp/notify.file

Filesize
51B

MD5
2a2fcc3a2c5c8501ccffe4b0f63d7beb

SHA1
e7c243c15d46b65e973124f0bc26efefcc945afe

SHA256
aaa20320a4fc2e6087b5fe3efee27aef394f706ca3ab041cee73f1c8dee24ef2

SHA512
2e0179d1071254b7b4b0f93e45aa0e595437ad7beb5ea8db72028d4ea53d3da324a06aab60ce5683066fff33f9ba20bb7b94f3022107b78fa56bedae33486d22

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/usr/bin/bsd-port/getty

Filesize
1.2MB

MD5
a0d38111b414f4f206090fc09c775074

SHA1
7071b17e1a57e9f76d15b25e2f8859793c4490ac

SHA256
07b8a624ca7328d1409144fb0a9119952ed450fe3d1af67d3263814c5a0c7d41

SHA512
4fda52fd2afed08341179907f8a5e4457e2db77f29769250df7f08f602ef92eaa305f45feb114b1ae21aa47fde91749dca4d980f24a3ad9be8009c8983678eda

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/usr/bin/dpkgd/lsof

Filesize
159KB

MD5
e093dc78225e2a0a25e3b137c1c1e442

SHA1
c29497cfaae729eb576875e4fdfa400640ab16be

SHA256
1190f4dbc7be174de8fd4096c9bf7a28eebfac937d308b7cc533be4a1240d26e

SHA512
fe1cc7a65327732eaaee89f427c10239ba822430e34177842f4681068d78d404b1830d808a2a71b1efcc5f126c6d8c053512237421173aaa150e215a672da6f0

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/usr/bin/dpkgd/ps

Filesize
130KB

MD5
558edc26f8a38fa9788220b9af8a73e7

SHA1
3024d44e580e9c67f32f6c585d50e2a6cc9a7cac

SHA256
b76435c80333d2c1fd18e0e7682f1c9dfb5da8d507e93e3c416f54b481c428d5

SHA512
edaa425b441044f015e8f68fffa1664e42372d00dd0e7b0924d24ce947aa8e5f96b3bdc326fa2f8b978e3fcf638a1ceca45a223735db73f1607df66990feb56f

Download Submit
/usr/bin/dpkgd/ss

Filesize
136KB

MD5
1dc929b5f2cd12fe6a2fe71140d2a9e3

SHA1
f9995a92bb201b1b7738a39a38570ef0c40b52d2

SHA256
418aae1da62554afe9f260866267af328fd761b3fd6f90f0ea53d543e2fefc38

SHA512
fbed011c595084548db440dfbe485b7d27032a44a6ae9e141fe43f31c8c524ff9347135ab035deb441fca99e5a3794f7bb9194f148aa2f60f1547a7c67d47373

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads