mrblack | a17ca067bd6f74817a0516e6083c0739fc9b9e36aafd95b74fddc84343972cda

Analysis

max time kernel
149s
max time network
128s
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
29-07-2024 08:55

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General

Target

3df5c5e26e2d9fd4946c8121299cd513_JaffaCakes118
Size

1.2MB
MD5

3df5c5e26e2d9fd4946c8121299cd513
SHA1

efaa2e397773a5eda58a68ddce1d9e17a90fdbd3
SHA256

a17ca067bd6f74817a0516e6083c0739fc9b9e36aafd95b74fddc84343972cda
SHA512

9574af57a2984065c6c348f7242533211051c5e9e03c74d6926023c64f61805b4d28698a3c77c3c33ffe33b84f0224f308889a5071bfeca3557fd58043dcca78
SSDEEP

24576:e845rGHu6gVJKG75oFpA0VWeX4q2y1q2rJp0:745vRVJKGtSA0VWeoJu9p0

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	3df5c5e26e2d9fd4946c8121299cd513_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	3df5c5e26e2d9fd4946c8121299cd513_JaffaCakes118
File opened for modification	/usr/bin/.sshd	cp
File opened for modification	/usr/bin/dpkgd/ss	cp
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	3df5c5e26e2d9fd4946c8121299cd513_JaffaCakes118
File opened for modification	/usr/bin/bsd-port/getty	cp
File opened for modification	/usr/bin/bsd-port/getty.lock	getty
File opened for modification	/usr/bin/dpkgd/ps	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	3df5c5e26e2d9fd4946c8121299cd513_JaffaCakes118

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	getty
File opened for reading	/proc/net/dev	3df5c5e26e2d9fd4946c8121299cd513_JaffaCakes118

Reads runtime system information 25 IoCs

Reads data from /proc virtual filesystem.

description	ioc	Process
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/cmdline	insmod
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/stat	3df5c5e26e2d9fd4946c8121299cd513_JaffaCakes118
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	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/meminfo	getty
File opened for reading	/proc/meminfo	3df5c5e26e2d9fd4946c8121299cd513_JaffaCakes118
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	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

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	3df5c5e26e2d9fd4946c8121299cd513_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
File opened for modification	/tmp/moni.lod	3df5c5e26e2d9fd4946c8121299cd513_JaffaCakes118
File opened for modification	/tmp/bill.lock	3df5c5e26e2d9fd4946c8121299cd513_JaffaCakes118
File opened for modification	/tmp/gates.lod	3df5c5e26e2d9fd4946c8121299cd513_JaffaCakes118

/tmp/3df5c5e26e2d9fd4946c8121299cd513_JaffaCakes118
/tmp/3df5c5e26e2d9fd4946c8121299cd513_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:1503
- /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/3df5c5e26e2d9fd4946c8121299cd513_JaffaCakes118 /usr/bin/bsd-port/getty"
  2⤵
  PID:1529
- - /bin/cp
    cp -f /tmp/3df5c5e26e2d9fd4946c8121299cd513_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
    - 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/3df5c5e26e2d9fd4946c8121299cd513_JaffaCakes118 /usr/bin/.sshd"
  2⤵
  PID:1539
- - /bin/cp
    cp -f /tmp/3df5c5e26e2d9fd4946c8121299cd513_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:1593
- - /sbin/insmod
    insmod /tmp/xpacket.ko
    3⤵
    - Reads runtime system information
    PID:1594

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
d5aac2e5a475fe0482af6b886b1498c2

SHA1
9660a6162a015a06d49ad89c116ee5bf26d82bb0

SHA256
bbf30353b38bbf0d9bb23e47a21aa9f04173e35c4f59220219494402ba0b8bf1

SHA512
2896d4c9601c1ad47a90d1955dd778cf0ef7e8b549cde30e636c1ca6b32e1d326dd9d277132797d8697bcb9d172edf060a2cf2fbb82830403f8697eb1a3d50a8

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/etc/init.d/selinux

Filesize
36B

MD5
993cc15058142d96c3daf7852c3d5ee8

SHA1
0950b8b391b04dd3895ea33cd3141543ebd2525d

SHA256
8171d077918611803d93088409f220c66fae1c670b297e1aa5d8cbd548ce9208

SHA512
0c4256c00a3710f97e92581b552682b36b62afc35fe72622c491323c618c19ea62611ac04ccafc3dfcde2254a2ebbd93b69b66795b16e36332293bed83adb928

Download Submit
/tmp/gates.lod

Filesize
4B

MD5
49b8b4f95f02e055801da3b4f58e28b7

SHA1
cf9e834770ba6c82d76e63220ee31818c4752951

SHA256
3ec13115817a014a621e22b052993c86ed03ed69114f8413888f302d70e2d216

SHA512
938a677a2bc46d49b94ed854509e0dd9011531be60a84d5adb3dc2da442f3dea627908ae967e346c7b0defeaa938888108a501573a3a7824f2421142f9316ecf

Download Submit
/tmp/moni.lod

Filesize
4B

MD5
8f19793b2671094e63a15ab883d50137

SHA1
a20f01a742a1c4e4a9a79543bcd5388bd2244696

SHA256
c0bfde62b169890693f8a776ba2577b9522c6d1aa9dd96c65f50042f1f018616

SHA512
94caa095d9361f5384c8c3c9571277609826089a688326743a96c431d7554ca7525291776ae3eff3cf3b2cd267004c067279bcd7944f460b2e0e66a19af38a30

Download Submit
/tmp/notify.file

Filesize
51B

MD5
7b68b9fd9091d5de2a6f40adccb7952a

SHA1
c49c87369e5dc43e7fdd95d73f0c94d03e5618e0

SHA256
f0e7888bcf789ebae1df8f855570d0f5f470d67df345d42b07473fa09708084b

SHA512
1f4da5cbc3d9a420eac856b25988150f10e49866c1f59bf90280cf7dccdd88d8d810eaf94ef36362eb463af0420a12aba7176fb7e84ded71e206b767dfecad71

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

Filesize
1.2MB

MD5
3df5c5e26e2d9fd4946c8121299cd513

SHA1
efaa2e397773a5eda58a68ddce1d9e17a90fdbd3

SHA256
a17ca067bd6f74817a0516e6083c0739fc9b9e36aafd95b74fddc84343972cda

SHA512
9574af57a2984065c6c348f7242533211051c5e9e03c74d6926023c64f61805b4d28698a3c77c3c33ffe33b84f0224f308889a5071bfeca3557fd58043dcca78

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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