mrblack | 544d2f9e21eb2892b5d2bd0135cb2b7a7e9d35983eed1ecbf45e71e89f4fb0a7

Analysis

max time kernel
149s
max time network
147s
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
15-08-2024 10:14

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General

Target

99dd48584152704db970a7b536c47bd5_JaffaCakes118
Size

1.2MB
MD5

99dd48584152704db970a7b536c47bd5
SHA1

eac36532779460580cd80e8f3d22e324bae71494
SHA256

544d2f9e21eb2892b5d2bd0135cb2b7a7e9d35983eed1ecbf45e71e89f4fb0a7
SHA512

34bcb7f4bbc1cb74f0ef6f6d8c04c12987d0d5756cf148cb79f7448891fc46c37d08a816ebb9e4fda3dc62befafc42aadd863956699cd2c82a35279e0bd94025
SSDEEP

24576:e845rGHu6gVJKG75oFpA0VWeX4/2y1q2rJp0:745vRVJKGtSA0VWeo+u9p0

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	1514	getty
/usr/bin/.sshd	1536	.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/selinux	getty
File opened for modification	/etc/init.d/DbSecuritySpt	99dd48584152704db970a7b536c47bd5_JaffaCakes118

Reads system routing table 1 TTPs 2 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
File opened for reading	/proc/net/route	99dd48584152704db970a7b536c47bd5_JaffaCakes118

Write file to user bin folder 1 TTPs 10 IoCs

Hijack Execution Flow

T1574

description	ioc	Process
File opened for modification	/usr/bin/bsd-port/udevd.lock	99dd48584152704db970a7b536c47bd5_JaffaCakes118
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/ss	cp
File opened for modification	/usr/bin/bsd-port/conf.n	getty
File opened for modification	/usr/bin/bsd-port/getty.lock	99dd48584152704db970a7b536c47bd5_JaffaCakes118
File opened for modification	/usr/bin/bsd-port/getty	cp
File opened for modification	/usr/bin/dpkgd/ps	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	getty
File opened for reading	/proc/cpuinfo	99dd48584152704db970a7b536c47bd5_JaffaCakes118

Reads system network configuration 1 TTPs 6 IoCs

Uses contents of /proc filesystem to enumerate network settings.

System Network Configuration Discovery

T1016

description	ioc	Process
File opened for reading	/proc/net/route	getty
File opened for reading	/proc/net/arp	getty
File opened for reading	/proc/net/route	99dd48584152704db970a7b536c47bd5_JaffaCakes118
File opened for reading	/proc/net/arp	99dd48584152704db970a7b536c47bd5_JaffaCakes118
File opened for reading	/proc/net/dev	getty
File opened for reading	/proc/net/dev	99dd48584152704db970a7b536c47bd5_JaffaCakes118

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	cp
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/meminfo	getty
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	getty
File opened for reading	/proc/meminfo	99dd48584152704db970a7b536c47bd5_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	cp
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	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/filesystems	cp
File opened for reading	/proc/stat	99dd48584152704db970a7b536c47bd5_JaffaCakes118

Writes file to tmp directory 8 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/conf.n	99dd48584152704db970a7b536c47bd5_JaffaCakes118
File opened for modification	/tmp/gates.lod	.sshd
File opened for modification	/tmp/moni.lod	99dd48584152704db970a7b536c47bd5_JaffaCakes118
File opened for modification	/tmp/bill.lock	99dd48584152704db970a7b536c47bd5_JaffaCakes118
File opened for modification	/tmp/gates.lod	99dd48584152704db970a7b536c47bd5_JaffaCakes118
File opened for modification	/tmp/notify.file	99dd48584152704db970a7b536c47bd5_JaffaCakes118
File opened for modification	/tmp/moni.lod	.sshd
File opened for modification	/tmp/notify.file	.sshd

/tmp/99dd48584152704db970a7b536c47bd5_JaffaCakes118
/tmp/99dd48584152704db970a7b536c47bd5_JaffaCakes118
1⤵
- Modifies init.d
- Reads system routing table
- Write file to user bin folder
- Checks CPU configuration
- Reads system network configuration
- Reads runtime system information
- Writes file to tmp directory
PID:1483
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt"
  2⤵
  PID:1496
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt
    3⤵
    PID:1497
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt"
  2⤵
  PID:1498
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt
    3⤵
    PID:1499
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt"
  2⤵
  PID:1500
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt
    3⤵
    PID:1501
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt"
  2⤵
  PID:1502
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt
    3⤵
    PID:1503
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt"
  2⤵
  PID:1504
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt
    3⤵
    PID:1505
- /bin/sh
  sh -c "mkdir -p /usr/bin/bsd-port"
  2⤵
  PID:1506
- - /bin/mkdir
    mkdir -p /usr/bin/bsd-port
    3⤵
    - Reads runtime system information
    PID:1507
- /bin/sh
  sh -c "mkdir -p /usr/bin/bsd-port"
  2⤵
  PID:1508
- - /bin/mkdir
    mkdir -p /usr/bin/bsd-port
    3⤵
    - Reads runtime system information
    PID:1509
- /bin/sh
  sh -c "cp -f /tmp/99dd48584152704db970a7b536c47bd5_JaffaCakes118 /usr/bin/bsd-port/getty"
  2⤵
  PID:1510
- - /bin/cp
    cp -f /tmp/99dd48584152704db970a7b536c47bd5_JaffaCakes118 /usr/bin/bsd-port/getty
    3⤵
    - Write file to user bin folder
    - Reads runtime system information
    PID:1511
- /bin/sh
  sh -c /usr/bin/bsd-port/getty
  2⤵
  PID:1513
- - /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:1514
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"
      4⤵
      PID:1522
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
        5⤵
        
        PID:1523
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"
      4⤵
      PID:1524
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
        5⤵
        
        PID:1525
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"
      4⤵
      PID:1526
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
        5⤵
        
        PID:1527
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"
      4⤵
      PID:1528
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
        5⤵
        
        PID:1529
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"
      4⤵
      PID:1530
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
        5⤵
        
        PID:1531
  - - /bin/sh
      sh -c "mkdir -p /usr/bin/dpkgd"
      4⤵
      PID:1532
    - - /bin/mkdir
        
        mkdir -p /usr/bin/dpkgd
        5⤵
        Reads runtime system information
        
        PID:1533
  - - /bin/sh
      sh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"
      4⤵
      PID:1537
    - - /bin/cp
        
        cp -f /bin/ps /usr/bin/dpkgd/ps
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1538
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1539
    - - /bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1540
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1541
    - - /bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1542
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /bin/ps"
      4⤵
      PID:1543
    - - /bin/cp
        
        cp -f /usr/bin/bsd-port/getty /bin/ps
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1544
  - - /bin/sh
      sh -c "chmod 0755 /bin/ps"
      4⤵
      PID:1545
    - - /bin/chmod
        
        chmod 0755 /bin/ps
        5⤵
        
        PID:1546
  - - /bin/sh
      sh -c "cp -f /bin/ss /usr/bin/dpkgd/ss"
      4⤵
      PID:1547
    - - /bin/cp
        
        cp -f /bin/ss /usr/bin/dpkgd/ss
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1548
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1549
    - - /bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1550
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1551
    - - /bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1552
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /bin/ss"
      4⤵
      PID:1553
    - - /bin/cp
        
        cp -f /usr/bin/bsd-port/getty /bin/ss
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1554
  - - /bin/sh
      sh -c "chmod 0755 /bin/ss"
      4⤵
      PID:1555
    - - /bin/chmod
        
        chmod 0755 /bin/ss
        5⤵
        
        PID:1556
  - - /bin/sh
      sh -c "cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof"
      4⤵
      PID:1557
    - - /bin/cp
        
        cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1558
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1559
    - - /bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1560
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1561
    - - /bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1562
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /usr/bin/lsof"
      4⤵
      PID:1563
    - - /bin/cp
        
        cp -f /usr/bin/bsd-port/getty /usr/bin/lsof
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1564
  - - /bin/sh
      sh -c "chmod 0755 /usr/bin/lsof"
      4⤵
      PID:1565
    - - /bin/chmod
        
        chmod 0755 /usr/bin/lsof
        5⤵
        
        PID:1566
  - - /bin/sh
      sh -c "insmod /usr/bin/bsd-port/xpacket.ko"
      4⤵
      PID:1569
    - - /sbin/insmod
        
        insmod /usr/bin/bsd-port/xpacket.ko
        5⤵
        Reads runtime system information
        
        PID:1570
- /bin/sh
  sh -c "mkdir -p /usr/bin"
  2⤵
  PID:1516
- - /bin/mkdir
    mkdir -p /usr/bin
    3⤵
    - Reads runtime system information
    PID:1517
- /bin/sh
  sh -c "mkdir -p /usr/bin"
  2⤵
  PID:1518
- - /bin/mkdir
    mkdir -p /usr/bin
    3⤵
    - Reads runtime system information
    PID:1519
- /bin/sh
  sh -c "cp -f /tmp/99dd48584152704db970a7b536c47bd5_JaffaCakes118 /usr/bin/.sshd"
  2⤵
  PID:1520
- - /bin/cp
    cp -f /tmp/99dd48584152704db970a7b536c47bd5_JaffaCakes118 /usr/bin/.sshd
    3⤵
    - Write file to user bin folder
    - Reads runtime system information
    PID:1521
- /bin/sh
  sh -c /usr/bin/.sshd
  2⤵
  PID:1535
- - /usr/bin/.sshd
    /usr/bin/.sshd
    3⤵
    - Executes dropped EXE
    - Writes file to tmp directory
    PID:1536
- /bin/sh
  sh -c "insmod /tmp/xpacket.ko"
  2⤵
  PID:1576
- - /sbin/insmod
    insmod /tmp/xpacket.ko
    3⤵
    - Reads runtime system information
    PID:1577

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

Replay Monitor

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Downloads

/etc/init.d/DbSecuritySpt

Filesize
64B

MD5
949be75d5db5ef1f28f54d3d25c59f57

SHA1
24654eb8f50756042e1af8ba0948b972d81af1f6

SHA256
d53b80d0ec5f0d7089486d4e9a0e24735cc7b13fbdfc8fd2465f4befcb465455

SHA512
2c2510f9d40dd1dad8a7222458c9812fa73b98c8c76ab4840a95da1387628f55367f7ef6f8301f1a5bc5368576205e7bf9c6606867746b509c1bc39af6fea311

Download Submit
/etc/init.d/selinux

Filesize
36B

MD5
993cc15058142d96c3daf7852c3d5ee8

SHA1
0950b8b391b04dd3895ea33cd3141543ebd2525d

SHA256
8171d077918611803d93088409f220c66fae1c670b297e1aa5d8cbd548ce9208

SHA512
0c4256c00a3710f97e92581b552682b36b62afc35fe72622c491323c618c19ea62611ac04ccafc3dfcde2254a2ebbd93b69b66795b16e36332293bed83adb928

Download Submit
/tmp/gates.lod

Filesize
4B

MD5
1baff70e2669e8376347efd3a874a341

SHA1
04754785b32160c5787f32875f2dc730c10cbbcb

SHA256
3c61752810703534f06918f7a048693a3f0d43431a82aab796267081da0b03cb

SHA512
7f9620c29a3e5c5487d43925c0a808262c0a290602e3493b798f558bf98294015c1991d7dcb2678189464b5e8be81e8a52f1c736a5dfb356f7f1ca75c4357ccd

Download Submit
/tmp/moni.lod

Filesize
4B

MD5
18d10dc6e666eab6de9215ae5b3d54df

SHA1
541f30554e2caa245dbe67fc4a03cb8c01a23c1a

SHA256
0651ee70db05737d7195776455175f3f4dbd4755e13e9f87d905a63817e979b8

SHA512
1cae3720d2a29bef7cc3e0280686ceefd518a0cf35f0fd239a6fe60329b78935dbc88d5c7a784e2029d1c70ad321ff3dc8f514a5901b515da88c8b3c436f5465

Download Submit
/tmp/notify.file

Filesize
51B

MD5
89e05344a629a1c768904c93c6c552b5

SHA1
6b351773c4648b6e3229c09804a4b2a1ebbda3ee

SHA256
4cef899d42bc24016a51569e066f83f7b416b301088cd525ecfee233bfd58886

SHA512
7739cb4307ff1d480619722baf303af5eeea098fc84498a8d7c068e75f788719a0b611e7be7d8d913a7b7ce1b0e18ad8f5dc12c3cdae9d9cd3302bc315b41672

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

Filesize
73B

MD5
c33233ed8756fc1188f6398f4b2ce4d6

SHA1
cc8600c3176251caa9150f0517844e04f7c1c901

SHA256
bc5ede3c33d78c77ac66d8d7e39b580b83ba609d8ecf39f5a09a6228ad8a92f7

SHA512
7818804cb8005c75d2dd382b45915c5b23e030471c1175ca628c310a8df49eb380da29df2976fd2f2e8f6f07491bd487083279cba043ed3600e54a1208a99ddc

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

Filesize
1.2MB

MD5
99dd48584152704db970a7b536c47bd5

SHA1
eac36532779460580cd80e8f3d22e324bae71494

SHA256
544d2f9e21eb2892b5d2bd0135cb2b7a7e9d35983eed1ecbf45e71e89f4fb0a7

SHA512
34bcb7f4bbc1cb74f0ef6f6d8c04c12987d0d5756cf148cb79f7448891fc46c37d08a816ebb9e4fda3dc62befafc42aadd863956699cd2c82a35279e0bd94025

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

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MITRE ATT&CK Enterprise v15

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