mrblack | 849a234df1b47dd952cb20e7c605861992dd8fc7197516af3d79bf61757a4474

Analysis

max time kernel
149s
max time network
147s
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 11:41

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General

Target

44332f6df559c4fd931408043fbb360e_JaffaCakes118
Size

1.2MB
MD5

44332f6df559c4fd931408043fbb360e
SHA1

dc224af8a6c0db56537661841b1d0e5935103455
SHA256

849a234df1b47dd952cb20e7c605861992dd8fc7197516af3d79bf61757a4474
SHA512

a8d240f8712ef3d198f68cb5013f1dc61c9b71f43c3039377a5aa84d770513de7e714e46ffb4be2b930c7d3bd8649529ff32236aa0ff21940bfafd47db9b9dee
SSDEEP

24576:e845rlHu6gVJKG75oFpA0VWkX4G2y1q2rJp0:745wRVJKGtSA0VWkoVu9p0

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	1521	getty
/usr/bin/.sshd	1548	.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	44332f6df559c4fd931408043fbb360e_JaffaCakes118
File opened for modification	/etc/init.d/selinux	getty

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	44332f6df559c4fd931408043fbb360e_JaffaCakes118
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/dpkgd/ps	cp
File opened for modification	/usr/bin/dpkgd/ss	cp
File opened for modification	/usr/bin/bsd-port/getty.lock	getty
File opened for modification	/usr/bin/bsd-port/udevd.lock	44332f6df559c4fd931408043fbb360e_JaffaCakes118
File opened for modification	/usr/bin/bsd-port/getty	cp
File opened for modification	/usr/bin/.sshd	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/conf.n	getty
File opened for modification	/usr/bin/bsd-port/getty.lock	44332f6df559c4fd931408043fbb360e_JaffaCakes118

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	44332f6df559c4fd931408043fbb360e_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/arp	44332f6df559c4fd931408043fbb360e_JaffaCakes118
File opened for reading	/proc/net/route	getty
File opened for reading	/proc/net/arp	getty
File opened for reading	/proc/net/dev	getty
File opened for reading	/proc/net/dev	44332f6df559c4fd931408043fbb360e_JaffaCakes118
File opened for reading	/proc/net/route	44332f6df559c4fd931408043fbb360e_JaffaCakes118

Reads runtime system information 25 IoCs

Reads data from /proc virtual filesystem.

description	ioc	Process
File opened for reading	/proc/stat	44332f6df559c4fd931408043fbb360e_JaffaCakes118
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	cp
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	cp
File opened for reading	/proc/meminfo	44332f6df559c4fd931408043fbb360e_JaffaCakes118
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	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/filesystems	cp
File opened for reading	/proc/meminfo	getty
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/stat	getty

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	44332f6df559c4fd931408043fbb360e_JaffaCakes118
File opened for modification	/tmp/gates.lod	.sshd
File opened for modification	/tmp/moni.lod	44332f6df559c4fd931408043fbb360e_JaffaCakes118
File opened for modification	/tmp/bill.lock	44332f6df559c4fd931408043fbb360e_JaffaCakes118
File opened for modification	/tmp/gates.lod	44332f6df559c4fd931408043fbb360e_JaffaCakes118
File opened for modification	/tmp/notify.file	44332f6df559c4fd931408043fbb360e_JaffaCakes118
File opened for modification	/tmp/moni.lod	.sshd
File opened for modification	/tmp/notify.file	.sshd

/tmp/44332f6df559c4fd931408043fbb360e_JaffaCakes118
/tmp/44332f6df559c4fd931408043fbb360e_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:1498
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt"
  2⤵
  PID:1503
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt
    3⤵
    PID:1504
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt"
  2⤵
  PID:1505
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt
    3⤵
    PID:1506
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt"
  2⤵
  PID:1507
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt
    3⤵
    PID:1508
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt"
  2⤵
  PID:1509
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt
    3⤵
    PID:1510
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt"
  2⤵
  PID:1511
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt
    3⤵
    PID:1512
- /bin/sh
  sh -c "mkdir -p /usr/bin/bsd-port"
  2⤵
  PID:1513
- - /bin/mkdir
    mkdir -p /usr/bin/bsd-port
    3⤵
    - Reads runtime system information
    PID:1514
- /bin/sh
  sh -c "mkdir -p /usr/bin/bsd-port"
  2⤵
  PID:1515
- - /bin/mkdir
    mkdir -p /usr/bin/bsd-port
    3⤵
    - Reads runtime system information
    PID:1516
- /bin/sh
  sh -c "cp -f /tmp/44332f6df559c4fd931408043fbb360e_JaffaCakes118 /usr/bin/bsd-port/getty"
  2⤵
  PID:1517
- - /bin/cp
    cp -f /tmp/44332f6df559c4fd931408043fbb360e_JaffaCakes118 /usr/bin/bsd-port/getty
    3⤵
    - Write file to user bin folder
    - Reads runtime system information
    PID:1518
- /bin/sh
  sh -c /usr/bin/bsd-port/getty
  2⤵
  PID:1520
- - /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:1521
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"
      4⤵
      PID:1529
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
        5⤵
        
        PID:1530
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"
      4⤵
      PID:1531
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
        5⤵
        
        PID:1532
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"
      4⤵
      PID:1533
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
        5⤵
        
        PID:1534
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"
      4⤵
      PID:1535
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
        5⤵
        
        PID:1536
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"
      4⤵
      PID:1537
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
        5⤵
        
        PID:1538
  - - /bin/sh
      sh -c "mkdir -p /usr/bin/dpkgd"
      4⤵
      PID:1539
    - - /bin/mkdir
        
        mkdir -p /usr/bin/dpkgd
        5⤵
        Reads runtime system information
        
        PID:1540
  - - /bin/sh
      sh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"
      4⤵
      PID:1541
    - - /bin/cp
        
        cp -f /bin/ps /usr/bin/dpkgd/ps
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1542
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1543
    - - /bin/mkdir
        
        mkdir -p /bin
        5⤵
        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:1549
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /bin/ps"
      4⤵
      PID:1550
    - - /bin/cp
        
        cp -f /usr/bin/bsd-port/getty /bin/ps
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1551
  - - /bin/sh
      sh -c "chmod 0755 /bin/ps"
      4⤵
      PID:1552
    - - /bin/chmod
        
        chmod 0755 /bin/ps
        5⤵
        
        PID:1553
  - - /bin/sh
      sh -c "cp -f /bin/ss /usr/bin/dpkgd/ss"
      4⤵
      PID:1554
    - - /bin/cp
        
        cp -f /bin/ss /usr/bin/dpkgd/ss
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1555
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1556
    - - /bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1557
  - - /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 "cp -f /usr/bin/bsd-port/getty /bin/ss"
      4⤵
      PID:1560
    - - /bin/cp
        
        cp -f /usr/bin/bsd-port/getty /bin/ss
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1561
  - - /bin/sh
      sh -c "chmod 0755 /bin/ss"
      4⤵
      PID:1562
    - - /bin/chmod
        
        chmod 0755 /bin/ss
        5⤵
        
        PID:1563
  - - /bin/sh
      sh -c "cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof"
      4⤵
      PID:1564
    - - /bin/cp
        
        cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1565
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1566
    - - /bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1567
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1568
    - - /bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1569
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /usr/bin/lsof"
      4⤵
      PID:1570
    - - /bin/cp
        
        cp -f /usr/bin/bsd-port/getty /usr/bin/lsof
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1571
  - - /bin/sh
      sh -c "chmod 0755 /usr/bin/lsof"
      4⤵
      PID:1572
    - - /bin/chmod
        
        chmod 0755 /usr/bin/lsof
        5⤵
        
        PID:1573
  - - /bin/sh
      sh -c "insmod /usr/bin/bsd-port/xpacket.ko"
      4⤵
      PID:1576
    - - /sbin/insmod
        
        insmod /usr/bin/bsd-port/xpacket.ko
        5⤵
        Reads runtime system information
        
        PID:1577
- /bin/sh
  sh -c "mkdir -p /usr/bin"
  2⤵
  PID:1523
- - /bin/mkdir
    mkdir -p /usr/bin
    3⤵
    - Reads runtime system information
    PID:1524
- /bin/sh
  sh -c "mkdir -p /usr/bin"
  2⤵
  PID:1525
- - /bin/mkdir
    mkdir -p /usr/bin
    3⤵
    - Reads runtime system information
    PID:1526
- /bin/sh
  sh -c "cp -f /tmp/44332f6df559c4fd931408043fbb360e_JaffaCakes118 /usr/bin/.sshd"
  2⤵
  PID:1527
- - /bin/cp
    cp -f /tmp/44332f6df559c4fd931408043fbb360e_JaffaCakes118 /usr/bin/.sshd
    3⤵
    - Write file to user bin folder
    - Reads runtime system information
    PID:1528
- /bin/sh
  sh -c /usr/bin/.sshd
  2⤵
  PID:1547
- - /usr/bin/.sshd
    /usr/bin/.sshd
    3⤵
    - Executes dropped EXE
    - Writes file to tmp directory
    PID:1548
- /bin/sh
  sh -c "insmod /tmp/xpacket.ko"
  2⤵
  PID:1580
- - /sbin/insmod
    insmod /tmp/xpacket.ko
    3⤵
    - Reads runtime system information
    PID:1581

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
114927eb35ee25193b6048e801346936

SHA1
b08894e890b7ed661c5a3c2171479ef0ccf47ff0

SHA256
efd348d568a12871f6062878099e0af5747f9e2ed0ff5a2775de53cf9a210ca8

SHA512
c9a40d4bd589e5283453a3b972fa799112750cfc2cbd6bb2a99c94fe4b521966c9119dee3c146a178f6091a14ae7e2691cf3a4f13a9f7022f637f0f2b315f503

Download Submit
/etc/init.d/selinux

Filesize
36B

MD5
993cc15058142d96c3daf7852c3d5ee8

SHA1
0950b8b391b04dd3895ea33cd3141543ebd2525d

SHA256
8171d077918611803d93088409f220c66fae1c670b297e1aa5d8cbd548ce9208

SHA512
0c4256c00a3710f97e92581b552682b36b62afc35fe72622c491323c618c19ea62611ac04ccafc3dfcde2254a2ebbd93b69b66795b16e36332293bed83adb928

Download Submit
/tmp/gates.lod

Filesize
4B

MD5
6490791e7abf6b29a381288cc23a8223

SHA1
37585335691c5a6647266cf0d14de500031ffb07

SHA256
a3d0c75739a3c6a80dcb6f9d71f9da29b49b62995801bc52957e06acb87db33d

SHA512
0b9949d3e3876df3bbc54d3aa797c8564dfc6f68256ea6ec85655ed0a430ced8a099641c0d401a87a6ba1b1580dfd73dfd84a50fbf8b2cfd06103cf47538800e

Download Submit
/tmp/moni.lod

Filesize
4B

MD5
0d4f4805c36dc6853edfa4c7e1638b48

SHA1
0dd8e2fe2969e0722430655502c0c0607a5b30be

SHA256
ef4cf73add6b6f476ece3477b6235878bc8a0de65fe7f561200ebac7f18db18a

SHA512
d0db9c1410d20e92c528bcc5d9973cec935bc4b87940bc8d15e100849034156c6670c60e3faa71c633ad03bf1c490550330ecbb336a2139d8cbcf99f00588b54

Download Submit
/tmp/notify.file

Filesize
51B

MD5
58a3ffc39b266a7b4f8194498bec00a9

SHA1
3f2aea735ba0d7fbab539491b07dd8b225f1d304

SHA256
97aa2cd5fc6bf187930619d07c9999efc7a6891e8c3c2d87967f35b694df55df

SHA512
67edaa5d7a5682f5ed1a0f0f835a8dbcaae2750ad1cb5f1f2a2dfa3d498a1867bd6e69dbd83abe24612804415cc81f1b637883b980dc66619e722d06f98a2b8a

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

Filesize
73B

MD5
3e0221f21cec9b6ec309481392239597

SHA1
519c23d7635f16f2b2de3764842dff71abf5e7aa

SHA256
4fc1c073dc05404f5e44e010b04f8eaf1df118c8e6e29a23fb4906f51db2917c

SHA512
3e0e0761ab3f3392d9652320ce10ac8b42b793af0537d5e2cb5f1b9a31fd9f79bb9efc7ba8873257e11c90076ccb79236efbf5fb7259b26ca48d10a373046791

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

Filesize
1.2MB

MD5
44332f6df559c4fd931408043fbb360e

SHA1
dc224af8a6c0db56537661841b1d0e5935103455

SHA256
849a234df1b47dd952cb20e7c605861992dd8fc7197516af3d79bf61757a4474

SHA512
a8d240f8712ef3d198f68cb5013f1dc61c9b71f43c3039377a5aa84d770513de7e714e46ffb4be2b930c7d3bd8649529ff32236aa0ff21940bfafd47db9b9dee

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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