mrblack | 055bd8cac1770e233c499f854522f74ce022cfce4174e4612c0e37b459a3aa04

Analysis

max time kernel
149s
max time network
149s
platform
ubuntu-20.04_amd64
resource
ubuntu2004-amd64-20240508-en
resource tags

arch:amd64arch:i386image:ubuntu2004-amd64-20240508-enkernel:5.4.0-169-genericlocale:en-usos:ubuntu-20.04-amd64system
submitted
21-08-2024 22:57

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General

Target

b562aa301cf2bb74c5c2b83b9b1956ee_JaffaCakes118
Size

1.5MB
MD5

b562aa301cf2bb74c5c2b83b9b1956ee
SHA1

801b06907cfcb19b97a9b65d9e486be80852e923
SHA256

055bd8cac1770e233c499f854522f74ce022cfce4174e4612c0e37b459a3aa04
SHA512

fbb76d0716f96e9913c016296f46a879fcb4c8876ec172b26f6f000b35f54cae8523b2da3764ae58b6db5d5e8e86a56404affd9c68978f443b08ead6be0fc2b0
SSDEEP

24576:GA46TrzJBisiOvhlOHdSbQmHyJgf/kgX0Exb2cyaGpIoiMDnnLmYXqSYKKZdTrnD:zRNi6OHdSbQoyJyXpxb2PaGpXiMDnLmB

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/agent	1459	agent
/usr/bin/acpid	1467	acpid

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/DbSecurityMdt	b562aa301cf2bb74c5c2b83b9b1956ee_JaffaCakes118
File opened for modification	/etc/init.d/selinux	agent

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	agent

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/ps	cp
File opened for modification	/usr/bin/bsd-port/conf.n	agent
File opened for modification	/usr/bin/bsd-port/udevd.lock	b562aa301cf2bb74c5c2b83b9b1956ee_JaffaCakes118
File opened for modification	/usr/bin/dpkgd/lsof	cp
File opened for modification	/usr/bin/acpid	cp
File opened for modification	/usr/bin/bsd-port/agent.lock	agent
File opened for modification	/usr/bin/dpkgd/ps	cp
File opened for modification	/usr/bin/bsd-port/agent.lock	b562aa301cf2bb74c5c2b83b9b1956ee_JaffaCakes118
File opened for modification	/usr/bin/bsd-port/agent	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	b562aa301cf2bb74c5c2b83b9b1956ee_JaffaCakes118
File opened for reading	/proc/cpuinfo	agent

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	b562aa301cf2bb74c5c2b83b9b1956ee_JaffaCakes118
File opened for reading	/proc/net/dev	agent
File opened for reading	/proc/net/route	agent
File opened for reading	/proc/net/arp	agent

Reads runtime system information 24 IoCs

Reads data from /proc virtual filesystem.

description	ioc	Process
File opened for reading	/proc/sys/kernel/version	b562aa301cf2bb74c5c2b83b9b1956ee_JaffaCakes118
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/sys/kernel/version	acpid
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
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/sys/kernel/version	agent
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/meminfo	agent
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/stat	b562aa301cf2bb74c5c2b83b9b1956ee_JaffaCakes118
File opened for reading	/proc/meminfo	b562aa301cf2bb74c5c2b83b9b1956ee_JaffaCakes118
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/stat	agent
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

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.note	acpid
File opened for modification	/tmp/notify.file	acpid
File opened for modification	/tmp/gates.note	acpid
File opened for modification	/tmp/moni.note	b562aa301cf2bb74c5c2b83b9b1956ee_JaffaCakes118
File opened for modification	/tmp/bill.note	b562aa301cf2bb74c5c2b83b9b1956ee_JaffaCakes118
File opened for modification	/tmp/gates.note	b562aa301cf2bb74c5c2b83b9b1956ee_JaffaCakes118
File opened for modification	/tmp/notify.file	b562aa301cf2bb74c5c2b83b9b1956ee_JaffaCakes118

/tmp/b562aa301cf2bb74c5c2b83b9b1956ee_JaffaCakes118
/tmp/b562aa301cf2bb74c5c2b83b9b1956ee_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:1402
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecurityMdt /etc/rc1.d/S97DbSecurityMdt"
  2⤵
  PID:1443
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecurityMdt /etc/rc1.d/S97DbSecurityMdt
    3⤵
    PID:1444
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecurityMdt /etc/rc2.d/S97DbSecurityMdt"
  2⤵
  PID:1445
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecurityMdt /etc/rc2.d/S97DbSecurityMdt
    3⤵
    PID:1446
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecurityMdt /etc/rc3.d/S97DbSecurityMdt"
  2⤵
  PID:1447
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecurityMdt /etc/rc3.d/S97DbSecurityMdt
    3⤵
    PID:1448
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecurityMdt /etc/rc4.d/S97DbSecurityMdt"
  2⤵
  PID:1449
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecurityMdt /etc/rc4.d/S97DbSecurityMdt
    3⤵
    PID:1450
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecurityMdt /etc/rc5.d/S97DbSecurityMdt"
  2⤵
  PID:1451
- - /usr/bin/ln
    ln -s /etc/init.d/DbSecurityMdt /etc/rc5.d/S97DbSecurityMdt
    3⤵
    PID:1452
- /bin/sh
  sh -c "mkdir -p /usr/bin/bsd-port"
  2⤵
  PID:1453
- - /usr/bin/mkdir
    mkdir -p /usr/bin/bsd-port
    3⤵
    - Reads runtime system information
    PID:1454
- /bin/sh
  sh -c "cp -f /tmp/b562aa301cf2bb74c5c2b83b9b1956ee_JaffaCakes118 /usr/bin/bsd-port/agent"
  2⤵
  PID:1455
- - /usr/bin/cp
    cp -f /tmp/b562aa301cf2bb74c5c2b83b9b1956ee_JaffaCakes118 /usr/bin/bsd-port/agent
    3⤵
    - Write file to user bin folder
    - Reads runtime system information
    PID:1456
- /bin/sh
  sh -c /usr/bin/bsd-port/agent
  2⤵
  PID:1458
- - /usr/bin/bsd-port/agent
    /usr/bin/bsd-port/agent
    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:1459
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"
      4⤵
      PID:1480
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
        5⤵
        
        PID:1481
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"
      4⤵
      PID:1482
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
        5⤵
        
        PID:1483
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"
      4⤵
      PID:1484
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
        5⤵
        
        PID:1485
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"
      4⤵
      PID:1486
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
        5⤵
        
        PID:1487
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"
      4⤵
      PID:1488
    - - /usr/bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
        5⤵
        
        PID:1489
  - - /bin/sh
      sh -c "mkdir -p /usr/bin/dpkgd"
      4⤵
      PID:1490
    - - /usr/bin/mkdir
        
        mkdir -p /usr/bin/dpkgd
        5⤵
        Reads runtime system information
        
        PID:1491
  - - /bin/sh
      sh -c "cp -f /bin/lsof /usr/bin/dpkgd/lsof"
      4⤵
      PID:1492
    - - /usr/bin/cp
        
        cp -f /bin/lsof /usr/bin/dpkgd/lsof
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1493
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1494
    - - /usr/bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1495
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/agent /bin/lsof"
      4⤵
      PID:1496
    - - /usr/bin/cp
        
        cp -f /usr/bin/bsd-port/agent /bin/lsof
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1497
  - - /bin/sh
      sh -c "chmod 0755 /bin/lsof"
      4⤵
      PID:1498
    - - /usr/bin/chmod
        
        chmod 0755 /bin/lsof
        5⤵
        
        PID:1499
  - - /bin/sh
      sh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"
      4⤵
      PID:1500
    - - /usr/bin/cp
        
        cp -f /bin/ps /usr/bin/dpkgd/ps
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1501
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1502
    - - /usr/bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1503
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/agent /bin/ps"
      4⤵
      PID:1504
    - - /usr/bin/cp
        
        cp -f /usr/bin/bsd-port/agent /bin/ps
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1505
  - - /bin/sh
      sh -c "chmod 0755 /bin/ps"
      4⤵
      PID:1506
    - - /usr/bin/chmod
        
        chmod 0755 /bin/ps
        5⤵
        
        PID:1507
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1508
    - - /usr/bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1511
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/agent /usr/bin/lsof"
      4⤵
      PID:1512
    - - /usr/bin/cp
        
        cp -f /usr/bin/bsd-port/agent /usr/bin/lsof
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1513
  - - /bin/sh
      sh -c "chmod 0755 /usr/bin/lsof"
      4⤵
      PID:1514
    - - /usr/bin/chmod
        
        chmod 0755 /usr/bin/lsof
        5⤵
        
        PID:1515
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1516
    - - /usr/bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1517
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/agent /usr/bin/ps"
      4⤵
      PID:1518
    - - /usr/bin/cp
        
        cp -f /usr/bin/bsd-port/agent /usr/bin/ps
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1519
  - - /bin/sh
      sh -c "chmod 0755 /usr/bin/ps"
      4⤵
      PID:1520
    - - /usr/bin/chmod
        
        chmod 0755 /usr/bin/ps
        5⤵
        
        PID:1521
  - - /bin/sh
      sh -c "insmod /usr/lib/xpacket.ko"
      4⤵
      PID:1522
    - - /usr/sbin/insmod
        
        insmod /usr/lib/xpacket.ko
        5⤵
        Reads runtime system information
        
        PID:1523
- /bin/sh
  sh -c "mkdir -p /usr/bin"
  2⤵
  PID:1461
- - /usr/bin/mkdir
    mkdir -p /usr/bin
    3⤵
    - Reads runtime system information
    PID:1462
- /bin/sh
  sh -c "cp -f /tmp/b562aa301cf2bb74c5c2b83b9b1956ee_JaffaCakes118 /usr/bin/acpid"
  2⤵
  PID:1463
- - /usr/bin/cp
    cp -f /tmp/b562aa301cf2bb74c5c2b83b9b1956ee_JaffaCakes118 /usr/bin/acpid
    3⤵
    - Write file to user bin folder
    - Reads runtime system information
    PID:1464
- /bin/sh
  sh -c /usr/bin/acpid
  2⤵
  PID:1466
- - /usr/bin/acpid
    /usr/bin/acpid
    3⤵
    - Executes dropped EXE
    - Reads runtime system information
    - Writes file to tmp directory
    PID:1467
- /bin/sh
  sh -c "insmod /usr/lib/xpacket.ko"
  2⤵
  PID:1470
- - /usr/sbin/insmod
    insmod /usr/lib/xpacket.ko
    3⤵
    - Reads runtime system information
    PID:1471

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/DbSecurityMdt

Filesize
64B

MD5
6ddec55f7c0167d95133936909e0005a

SHA1
d3feac2d8255b9ceb93aed78b70d0805eb09908f

SHA256
733d0db723bef8e46a99661042678b5de84e983715bda5e626726c104332cf89

SHA512
da800203bc5d7760ae15602a18db30162139f259bd002c5a3492663244ecdac559b60e3a1227732dd80b75ee1a2a65eec5569b528ae9e5d55ddfa54cd2e21009

Download Submit
/etc/init.d/selinux

Filesize
36B

MD5
c6a80f08539a4c3176762f514976dd24

SHA1
bbc5826b01d20f5c4d315ff5dbc3f216760c64ef

SHA256
ea47e885ae227059ce55d020335f7869c565ec6d85f484497e83cd4998149d5d

SHA512
9a1e3b0142876305fe389e07880bd586e97bf709273a66299d9128ff2861459104054d4e5d836aecdf73f2c11886fa3a2a8498741adb3211b96116658b856175

Download Submit
/tmp/gates.note

Filesize
4B

MD5
4edaa105d5f53590338791951e38c3ad

SHA1
84cbb8cb3aaa7a5a5f98ab30b5b0c948cca74f93

SHA256
e8026bda3ea2eedc7dc7bce9daa640f8cc0f33e335bd73d986a872b3ba789c71

SHA512
4ba97143cecd7c930f04399ee510c97ecb6db989aea923bac4d98deffe8310ed21f8928adc3438fe31206e6a0880ee3fccc9121d1fe8bb500c6bd874b37a7c41

Download Submit
/tmp/moni.note

Filesize
4B

MD5
cec6f62cfb44b1be110b7bf70c8362d8

SHA1
742f0a1ef06d6bdc8c856b05b3ad8839e2a27ba7

SHA256
6b6803d3f23f64d048b7d5e5d1b828c90aac1b68bec5c590100122902a400876

SHA512
75b3a6744aacae46a8de3b5b609d21cd143e701f3c73ea257d121e8cb54d27a0d3d2ed17d25cc8329a5e2b8913a298747c40f555b0af3b32ebe3dc6d22099ab8

Download Submit
/tmp/notify.file

Filesize
51B

MD5
0e2a64de8ce9649624d1bba4d5bb9917

SHA1
4c0c90288903be314deb87b741dba8f1c75723a4

SHA256
0f5f0d029d8c9214ae21ada02119cb657f7270ee2158381aa573cb2514376b29

SHA512
da409b3b80ca20b8fc99e190197727df54d8133128f525c20121feb77f3646c73e648e93dd895d971ece3a106bcf54da0efadc071077bd530862e952801cb84d

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

Filesize
1.5MB

MD5
b562aa301cf2bb74c5c2b83b9b1956ee

SHA1
801b06907cfcb19b97a9b65d9e486be80852e923

SHA256
055bd8cac1770e233c499f854522f74ce022cfce4174e4612c0e37b459a3aa04

SHA512
fbb76d0716f96e9913c016296f46a879fcb4c8876ec172b26f6f000b35f54cae8523b2da3764ae58b6db5d5e8e86a56404affd9c68978f443b08ead6be0fc2b0

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

Filesize
69B

MD5
dea2a624df55625c4e81ba70dda5cea8

SHA1
e2203fd75ace086371402bb6a8eaa22e0748c5f1

SHA256
975fcc5b0d1d9ec1fa6d47b1a606ff9cbd4b76600828ee1d2e80eeafa221df68

SHA512
8b147335a63b31851396fd5e9792808fe2d36ef0bd3ced3f3a362bf0109e8d105a6b275014d7253764c6a402fa64f29d59914accda471566332707ed4913b509

Download Submit
/usr/bin/dpkgd/lsof

Filesize
171KB

MD5
061386937ec7acf924438a2643a32be0

SHA1
01a044b9e58839bea3e58c66cb32acc16241bf91

SHA256
8a26bbae9eb85aa98ef29cfe5b0a291234db6eb394c3e0c2841983dcf7dda959

SHA512
2de2e56ac4c32f47b4a1945ccfb0db378e6d59019ee8004e3e5d2ec8935efb5aa8ee14b8a0b21c61a267e195d42a3232a6dcade8720de06118fd579277f59db7

Download Submit
/usr/bin/dpkgd/ps

Filesize
134KB

MD5
d194576b899af45b1d2a448612ec21e5

SHA1
492f7d8f28cd4397ce22fcf0d8bf3304ea93465a

SHA256
a8cf81f3a1137c999c3cf336507ce120b3065e633ade01db6280d427b7d986ca

SHA512
b323babd9580b91772cde29c9f22ae75b27f5ce8ce0268a48ca41713c3545dd72409932a5c48f6af66ac6e43127eb5461d1f686bd667fa1b0e56a1564db3c539

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads