mrblack | d2727ccabe3f5fea59ebc444735c66d9529abf1f3e94780b54ed76f521947d8f

Analysis

max time kernel
149s
max time network
150s
platform
ubuntu-18.04_amd64
resource
ubuntu1804-amd64-20240729-en
resource tags

arch:amd64arch:i386image:ubuntu1804-amd64-20240729-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
submitted
28-07-2024 10:45

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General

Target

15621ba30d969a8257fdb89b5cb9d9ed_JaffaCakes118
Size

1.2MB
MD5

15621ba30d969a8257fdb89b5cb9d9ed
SHA1

7188aeb7a8a43548cb2c19baadd04d525417f1ba
SHA256

d2727ccabe3f5fea59ebc444735c66d9529abf1f3e94780b54ed76f521947d8f
SHA512

279e4b5852e0c0de195b684dbe967b9960580a46c114475f68108f7b0510435df2a348eb12c722b800dbd7b848069d73c797e0dec42325e4bcbcc8c2132f0293
SSDEEP

24576:e845rGHu6gVJKG75oFpA0VWeX4y2y1q2rJp0:745vRVJKGtSA0VWeoBu9p0

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	1533	getty
/usr/bin/.sshd	1557	.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	15621ba30d969a8257fdb89b5cb9d9ed_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	getty

Write file to user bin folder 1 TTPs 10 IoCs

Hijack Execution Flow

T1574

description	ioc	Process
File opened for modification	/usr/bin/lsof	cp
File opened for modification	/usr/bin/bsd-port/udevd.lock	15621ba30d969a8257fdb89b5cb9d9ed_JaffaCakes118
File opened for modification	/usr/bin/bsd-port/getty.lock	getty
File opened for modification	/usr/bin/dpkgd/lsof	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/conf.n	getty
File opened for modification	/usr/bin/bsd-port/getty.lock	15621ba30d969a8257fdb89b5cb9d9ed_JaffaCakes118
File opened for modification	/usr/bin/bsd-port/getty	cp
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/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	getty
File opened for reading	/proc/cpuinfo	15621ba30d969a8257fdb89b5cb9d9ed_JaffaCakes118

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/arp	getty
File opened for reading	/proc/net/dev	getty
File opened for reading	/proc/net/dev	15621ba30d969a8257fdb89b5cb9d9ed_JaffaCakes118
File opened for reading	/proc/net/route	getty

Reads runtime system information 25 IoCs

Reads data from /proc virtual filesystem.

description	ioc	Process
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/meminfo	getty
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/filesystems	mkdir
File opened for reading	/proc/stat	15621ba30d969a8257fdb89b5cb9d9ed_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/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/filesystems	cp
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	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/meminfo	15621ba30d969a8257fdb89b5cb9d9ed_JaffaCakes118

Writes file to tmp directory 7 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/gates.lod	.sshd
File opened for modification	/tmp/moni.lod	15621ba30d969a8257fdb89b5cb9d9ed_JaffaCakes118
File opened for modification	/tmp/bill.lock	15621ba30d969a8257fdb89b5cb9d9ed_JaffaCakes118
File opened for modification	/tmp/gates.lod	15621ba30d969a8257fdb89b5cb9d9ed_JaffaCakes118
File opened for modification	/tmp/notify.file	15621ba30d969a8257fdb89b5cb9d9ed_JaffaCakes118
File opened for modification	/tmp/moni.lod	.sshd

/tmp/15621ba30d969a8257fdb89b5cb9d9ed_JaffaCakes118
/tmp/15621ba30d969a8257fdb89b5cb9d9ed_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:1509
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt"
  2⤵
  PID:1515
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt
    3⤵
    PID:1516
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt"
  2⤵
  PID:1517
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt
    3⤵
    PID:1518
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt"
  2⤵
  PID:1519
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt
    3⤵
    PID:1520
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt"
  2⤵
  PID:1521
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt
    3⤵
    PID:1522
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt"
  2⤵
  PID:1523
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt
    3⤵
    PID:1524
- /bin/sh
  sh -c "mkdir -p /usr/bin/bsd-port"
  2⤵
  PID:1525
- - /bin/mkdir
    mkdir -p /usr/bin/bsd-port
    3⤵
    - Reads runtime system information
    PID:1526
- /bin/sh
  sh -c "mkdir -p /usr/bin/bsd-port"
  2⤵
  PID:1527
- - /bin/mkdir
    mkdir -p /usr/bin/bsd-port
    3⤵
    - Reads runtime system information
    PID:1528
- /bin/sh
  sh -c "cp -f /tmp/15621ba30d969a8257fdb89b5cb9d9ed_JaffaCakes118 /usr/bin/bsd-port/getty"
  2⤵
  PID:1529
- - /bin/cp
    cp -f /tmp/15621ba30d969a8257fdb89b5cb9d9ed_JaffaCakes118 /usr/bin/bsd-port/getty
    3⤵
    - Write file to user bin folder
    - Reads runtime system information
    PID:1530
- /bin/sh
  sh -c /usr/bin/bsd-port/getty
  2⤵
  PID:1532
- - /usr/bin/bsd-port/getty
    /usr/bin/bsd-port/getty
    3⤵
    - Executes dropped EXE
    - Modifies init.d
    - Reads system routing table
    - Write file to user bin folder
    - Checks CPU configuration
    - Reads system network configuration
    - Reads runtime system information
    PID:1533
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"
      4⤵
      PID:1541
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
        5⤵
        
        PID:1542
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"
      4⤵
      PID:1543
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
        5⤵
        
        PID:1544
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"
      4⤵
      PID:1545
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
        5⤵
        
        PID:1546
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"
      4⤵
      PID:1547
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
        5⤵
        
        PID:1548
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"
      4⤵
      PID:1549
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
        5⤵
        
        PID:1550
  - - /bin/sh
      sh -c "mkdir -p /usr/bin/dpkgd"
      4⤵
      PID:1551
    - - /bin/mkdir
        
        mkdir -p /usr/bin/dpkgd
        5⤵
        Reads runtime system information
        
        PID:1552
  - - /bin/sh
      sh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"
      4⤵
      PID:1553
    - - /bin/cp
        
        cp -f /bin/ps /usr/bin/dpkgd/ps
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1554
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1558
    - - /bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1559
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1560
    - - /bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1561
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /bin/ps"
      4⤵
      PID:1562
    - - /bin/cp
        
        cp -f /usr/bin/bsd-port/getty /bin/ps
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1563
  - - /bin/sh
      sh -c "chmod 0755 /bin/ps"
      4⤵
      PID:1564
    - - /bin/chmod
        
        chmod 0755 /bin/ps
        5⤵
        
        PID:1565
  - - /bin/sh
      sh -c "cp -f /bin/ss /usr/bin/dpkgd/ss"
      4⤵
      PID:1566
    - - /bin/cp
        
        cp -f /bin/ss /usr/bin/dpkgd/ss
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1567
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1568
    - - /bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1569
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1570
    - - /bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1571
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /bin/ss"
      4⤵
      PID:1572
    - - /bin/cp
        
        cp -f /usr/bin/bsd-port/getty /bin/ss
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1573
  - - /bin/sh
      sh -c "chmod 0755 /bin/ss"
      4⤵
      PID:1574
    - - /bin/chmod
        
        chmod 0755 /bin/ss
        5⤵
        
        PID:1575
  - - /bin/sh
      sh -c "cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof"
      4⤵
      PID:1576
    - - /bin/cp
        
        cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1577
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1578
    - - /bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1579
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1580
    - - /bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1581
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /usr/bin/lsof"
      4⤵
      PID:1582
    - - /bin/cp
        
        cp -f /usr/bin/bsd-port/getty /usr/bin/lsof
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1583
  - - /bin/sh
      sh -c "chmod 0755 /usr/bin/lsof"
      4⤵
      PID:1584
    - - /bin/chmod
        
        chmod 0755 /usr/bin/lsof
        5⤵
        
        PID:1585
  - - /bin/sh
      sh -c "insmod /usr/bin/bsd-port/xpacket.ko"
      4⤵
      PID:1588
    - - /sbin/insmod
        
        insmod /usr/bin/bsd-port/xpacket.ko
        5⤵
        Reads runtime system information
        
        PID:1589
- /bin/sh
  sh -c "mkdir -p /usr/bin"
  2⤵
  PID:1535
- - /bin/mkdir
    mkdir -p /usr/bin
    3⤵
    - Reads runtime system information
    PID:1536
- /bin/sh
  sh -c "mkdir -p /usr/bin"
  2⤵
  PID:1537
- - /bin/mkdir
    mkdir -p /usr/bin
    3⤵
    - Reads runtime system information
    PID:1538
- /bin/sh
  sh -c "cp -f /tmp/15621ba30d969a8257fdb89b5cb9d9ed_JaffaCakes118 /usr/bin/.sshd"
  2⤵
  PID:1539
- - /bin/cp
    cp -f /tmp/15621ba30d969a8257fdb89b5cb9d9ed_JaffaCakes118 /usr/bin/.sshd
    3⤵
    - Write file to user bin folder
    - Reads runtime system information
    PID:1540
- /bin/sh
  sh -c /usr/bin/.sshd
  2⤵
  PID:1556
- - /usr/bin/.sshd
    /usr/bin/.sshd
    3⤵
    - Executes dropped EXE
    - Writes file to tmp directory
    PID:1557
- /bin/sh
  sh -c "insmod /tmp/xpacket.ko"
  2⤵
  PID:1592
- - /sbin/insmod
    insmod /tmp/xpacket.ko
    3⤵
    - Reads runtime system information
    PID:1593

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
8e68f9fd14ad20140820c04032e75621

SHA1
f4ba0dd6f63c96088bb8632704bb9b274f15bc20

SHA256
2586ecc654beba48cb3f63b976a804da651a6771dbef1fea34e49986bd830cc1

SHA512
39b170ca4ac330e620053affb5c6980aedc11f16470b5e58711a55ea40914945bdf5d29a500229ac32a391ec4ff06b9a91e4d69f5b73c9fdc0a99061350da01a

Download Submit
/etc/init.d/selinux

Filesize
36B

MD5
993cc15058142d96c3daf7852c3d5ee8

SHA1
0950b8b391b04dd3895ea33cd3141543ebd2525d

SHA256
8171d077918611803d93088409f220c66fae1c670b297e1aa5d8cbd548ce9208

SHA512
0c4256c00a3710f97e92581b552682b36b62afc35fe72622c491323c618c19ea62611ac04ccafc3dfcde2254a2ebbd93b69b66795b16e36332293bed83adb928

Download Submit
/tmp/gates.lod

Filesize
4B

MD5
ebb71045453f38676c40deb9864f811d

SHA1
810bd2adca8109e71a0fa4995bb7a965fd8d905a

SHA256
0d0c9bc37ae955b26c8bfecc22fcd072c4ea5ce95947a5051b5ed7399bff4f2e

SHA512
3a3fc2e1174cf6fa5acf3b1d706c3f21b85915b8f7bc2bae7c5ca6ceb86fc5377e33ff347264e1dd620fcba5fec174ae4b8793e7a9aaaf2b0ec06d85e077efdf

Download Submit
/tmp/moni.lod

Filesize
4B

MD5
8f19793b2671094e63a15ab883d50137

SHA1
a20f01a742a1c4e4a9a79543bcd5388bd2244696

SHA256
c0bfde62b169890693f8a776ba2577b9522c6d1aa9dd96c65f50042f1f018616

SHA512
94caa095d9361f5384c8c3c9571277609826089a688326743a96c431d7554ca7525291776ae3eff3cf3b2cd267004c067279bcd7944f460b2e0e66a19af38a30

Download Submit
/tmp/notify.file

Filesize
51B

MD5
c17fbd6624794bfd6854f1fce61279da

SHA1
f901eaba705162b80e7fe2505f5a6236ba474f1a

SHA256
a0d0da45c69c2ed541806775b129e433c6e08921dbd91742a56681a69a984a04

SHA512
0617f488fe48ac5349b01ae725342c2b773b42fe3db9e0f8874bf259d21a9d1e7e3d5086945d73040f3c9e26e2b0d077ec95d71fdd6e42d386853f170295cb5e

Download Submit
/usr/bin/bsd-port/conf.n

Filesize
73B

MD5
2ebeb863ee92fdb01664d8ef9b2c5ce6

SHA1
17dd2cb2c8543b93b45f902d509f249b65b22a26

SHA256
9128cd473e5799b32efdef0ff4f150188f229e7a4810d8ad83ebaf472fa82ad0

SHA512
558d382edeea7d4d7ac41764707b14dd268877ee2e25576f0d092446063fb6d3a2be0f8ef26f3c68feaa539c8ba3b86a63e6f516da283abf6737f7f156e085ef

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

Filesize
1.2MB

MD5
15621ba30d969a8257fdb89b5cb9d9ed

SHA1
7188aeb7a8a43548cb2c19baadd04d525417f1ba

SHA256
d2727ccabe3f5fea59ebc444735c66d9529abf1f3e94780b54ed76f521947d8f

SHA512
279e4b5852e0c0de195b684dbe967b9960580a46c114475f68108f7b0510435df2a348eb12c722b800dbd7b848069d73c797e0dec42325e4bcbcc8c2132f0293

Download Submit
/usr/bin/dpkgd/lsof

Filesize
159KB

MD5
e093dc78225e2a0a25e3b137c1c1e442

SHA1
c29497cfaae729eb576875e4fdfa400640ab16be

SHA256
1190f4dbc7be174de8fd4096c9bf7a28eebfac937d308b7cc533be4a1240d26e

SHA512
fe1cc7a65327732eaaee89f427c10239ba822430e34177842f4681068d78d404b1830d808a2a71b1efcc5f126c6d8c053512237421173aaa150e215a672da6f0

Download Submit
/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

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads