mrblack | 19ba3b2658b0bc0fed89b30286bc28c2d4296cb27c2d758f78596be138317b60

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
28-07-2024 23:03

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General

Target

298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118
Size

1.2MB
MD5

298049890e2f02ba6a507f8d73c7f7dc
SHA1

76ec00fe09b85c2cb1df9363e2919705190f35c5
SHA256

19ba3b2658b0bc0fed89b30286bc28c2d4296cb27c2d758f78596be138317b60
SHA512

1b38b290c3b12078c7cdff7f97a2ce59069671fa0f94ce72d108b0ed366567a1d038e80a0f5e204e578513c1233ca79ff5b655fef92f2ef9767322bb852aed1f
SSDEEP

24576:e845rGHu6gVJKG75oFpA0VWeX402y1q2rJp0:745vRVJKGtSA0VWeobu9p0

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

Processes:

resource	yara_rule
/usr/bin/bsd-port/getty	family_mrblack

Executes dropped EXE 2 IoCs

Processes:

getty.sshd

ioc pid process

/usr/bin/bsd-port/getty 1539 getty
/usr/bin/.sshd 1566 .sshd

ioc	pid	process
/usr/bin/bsd-port/getty	1539	getty
/usr/bin/.sshd	1566	.sshd

Modifies init.d 1 TTPs 2 IoCs

Adds/modifies system service, likely for persistence.

persistence

Boot or Logon Autostart Execution

T1547

Processes:

298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118getty

description	ioc	process
File opened for modification	/etc/init.d/DbSecuritySpt	298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118
File opened for modification	/etc/init.d/selinux	getty

Write file to user bin folder 1 TTPs 9 IoCs

Hijack Execution Flow

T1574

Processes:

cpcpcpcp298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118cpgettycp

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/dpkgd/lsof	cp
File opened for modification	/usr/bin/lsof	cp
File opened for modification	/usr/bin/bsd-port/getty.lock	298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118
File opened for modification	/usr/bin/bsd-port/udevd.lock	298049890e2f02ba6a507f8d73c7f7dc_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/.sshd	cp

Writes file to system bin folder 1 TTPs 2 IoCs

Hijack Execution Flow
T1574

Processes:

cpcp

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

Processes:

getty298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118

description ioc process

File opened for reading /proc/cpuinfo getty
File opened for reading /proc/cpuinfo 298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118
Reads system network configuration 1 TTPs 2 IoCs
Uses contents of /proc filesystem to enumerate network settings.

System Network Configuration Discovery
T1016

Processes:

298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118getty

description ioc process

File opened for reading /proc/net/dev 298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118
File opened for reading /proc/net/dev getty

description	ioc	process
File opened for modification	/bin/ps	cp
File opened for modification	/bin/ss	cp

description	ioc	process
File opened for reading	/proc/cpuinfo	getty
File opened for reading	/proc/cpuinfo	298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118

description	ioc	process
File opened for reading	/proc/net/dev	298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118
File opened for reading	/proc/net/dev	getty

Reads runtime system information 25 IoCs

Reads data from /proc virtual filesystem.

Processes:

mkdirmkdirinsmodcpmkdirmkdircpcpcpmkdirmkdircpmkdirgettyinsmod298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118mkdircpcpmkdircpmkdirmkdir

description	ioc	process
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	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
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/meminfo	getty
File opened for reading	/proc/cmdline	insmod
File opened for reading	/proc/meminfo	298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/stat	getty
File opened for reading	/proc/stat	298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118
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	mkdir
File opened for reading	/proc/filesystems	mkdir

Writes file to tmp directory 7 IoCs

Malware often drops required files in the /tmp directory.

Processes:

298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118.sshd

description	ioc	process
File opened for modification	/tmp/notify.file	298049890e2f02ba6a507f8d73c7f7dc_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	298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118
File opened for modification	/tmp/bill.lock	298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118
File opened for modification	/tmp/gates.lod	298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118

/tmp/298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118
/tmp/298049890e2f02ba6a507f8d73c7f7dc_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:1516

/bin/sh
sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt"
2⤵
PID:1521

/bin/ln
ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt
3⤵
PID:1522

/bin/sh
sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt"
2⤵
PID:1523

/bin/ln
ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt
3⤵
PID:1524

/bin/sh
sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt"
2⤵
PID:1525

/bin/ln
ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt
3⤵
PID:1526

/bin/sh
sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt"
2⤵
PID:1527

/bin/ln
ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt
3⤵
PID:1528

/bin/sh
sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt"
2⤵
PID:1529

/bin/ln
ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt
3⤵
PID:1530

/bin/sh
sh -c "mkdir -p /usr/bin/bsd-port"
2⤵
PID:1531

/bin/mkdir
mkdir -p /usr/bin/bsd-port
3⤵
- Reads runtime system information
PID:1532

/bin/sh
sh -c "mkdir -p /usr/bin/bsd-port"
2⤵
PID:1533

/bin/mkdir
mkdir -p /usr/bin/bsd-port
3⤵
- Reads runtime system information
PID:1534

/bin/sh
sh -c "cp -f /tmp/298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118 /usr/bin/bsd-port/getty"
2⤵
PID:1535

/bin/cp
cp -f /tmp/298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118 /usr/bin/bsd-port/getty
3⤵
- Write file to user bin folder
- Reads runtime system information
PID:1536

/bin/sh
sh -c /usr/bin/bsd-port/getty
2⤵
PID:1538

/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:1539

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"
4⤵
PID:1547

/bin/ln
ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
5⤵
PID:1548

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"
4⤵
PID:1549

/bin/ln
ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
5⤵
PID:1550

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"
4⤵
PID:1551

/bin/ln
ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
5⤵
PID:1552

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"
4⤵
PID:1553

/bin/ln
ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
5⤵
PID:1554

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"
4⤵
PID:1555

/bin/ln
ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
5⤵
PID:1556

/bin/sh
sh -c "mkdir -p /usr/bin/dpkgd"
4⤵
PID:1557

/bin/mkdir
mkdir -p /usr/bin/dpkgd
5⤵
- Reads runtime system information
PID:1558

/bin/sh
sh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"
4⤵
PID:1559

/bin/cp
cp -f /bin/ps /usr/bin/dpkgd/ps
5⤵
- Write file to user bin folder
- Reads runtime system information
PID:1560

/bin/sh
sh -c "mkdir -p /bin"
4⤵
PID:1561

/bin/mkdir
mkdir -p /bin
5⤵
- Reads runtime system information
PID:1562

/bin/sh
sh -c "mkdir -p /bin"
4⤵
PID:1563

/bin/mkdir
mkdir -p /bin
5⤵
- Reads runtime system information
PID:1567

/bin/sh
sh -c "cp -f /usr/bin/bsd-port/getty /bin/ps"
4⤵
PID:1568

/bin/cp
cp -f /usr/bin/bsd-port/getty /bin/ps
5⤵
- Writes file to system bin folder
- Reads runtime system information
PID:1569

/bin/sh
sh -c "chmod 0755 /bin/ps"
4⤵
PID:1570

/bin/chmod
chmod 0755 /bin/ps
5⤵
PID:1571

/bin/sh
sh -c "cp -f /bin/ss /usr/bin/dpkgd/ss"
4⤵
PID:1572

/bin/cp
cp -f /bin/ss /usr/bin/dpkgd/ss
5⤵
- Write file to user bin folder
- Reads runtime system information
PID:1573

/bin/sh
sh -c "mkdir -p /bin"
4⤵
PID:1574

/bin/mkdir
mkdir -p /bin
5⤵
- Reads runtime system information
PID:1575

/bin/sh
sh -c "mkdir -p /bin"
4⤵
PID:1576

/bin/mkdir
mkdir -p /bin
5⤵
- Reads runtime system information
PID:1577

/bin/sh
sh -c "cp -f /usr/bin/bsd-port/getty /bin/ss"
4⤵
PID:1578

/bin/cp
cp -f /usr/bin/bsd-port/getty /bin/ss
5⤵
- Writes file to system bin folder
- Reads runtime system information
PID:1579

/bin/sh
sh -c "chmod 0755 /bin/ss"
4⤵
PID:1580

/bin/chmod
chmod 0755 /bin/ss
5⤵
PID:1581

/bin/sh
sh -c "cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof"
4⤵
PID:1582

/bin/cp
cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof
5⤵
- Write file to user bin folder
- Reads runtime system information
PID:1583

/bin/sh
sh -c "mkdir -p /usr/bin"
4⤵
PID:1584

/bin/mkdir
mkdir -p /usr/bin
5⤵
- Reads runtime system information
PID:1585

/bin/sh
sh -c "mkdir -p /usr/bin"
4⤵
PID:1586

/bin/mkdir
mkdir -p /usr/bin
5⤵
- Reads runtime system information
PID:1587

/bin/sh
sh -c "cp -f /usr/bin/bsd-port/getty /usr/bin/lsof"
4⤵
PID:1588

/bin/cp
cp -f /usr/bin/bsd-port/getty /usr/bin/lsof
5⤵
- Write file to user bin folder
- Reads runtime system information
PID:1589

/bin/sh
sh -c "chmod 0755 /usr/bin/lsof"
4⤵
PID:1590

/bin/chmod
chmod 0755 /usr/bin/lsof
5⤵
PID:1591

/bin/sh
sh -c "insmod /usr/bin/bsd-port/xpacket.ko"
4⤵
PID:1594

/sbin/insmod
insmod /usr/bin/bsd-port/xpacket.ko
5⤵
- Reads runtime system information
PID:1595

/bin/sh
sh -c "mkdir -p /usr/bin"
2⤵
PID:1541

/bin/mkdir
mkdir -p /usr/bin
3⤵
- Reads runtime system information
PID:1542

/bin/sh
sh -c "mkdir -p /usr/bin"
2⤵
PID:1543

/bin/mkdir
mkdir -p /usr/bin
3⤵
- Reads runtime system information
PID:1544

/bin/sh
sh -c "cp -f /tmp/298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118 /usr/bin/.sshd"
2⤵
PID:1545

/bin/cp
cp -f /tmp/298049890e2f02ba6a507f8d73c7f7dc_JaffaCakes118 /usr/bin/.sshd
3⤵
- Write file to user bin folder
- Reads runtime system information
PID:1546

/bin/sh
sh -c /usr/bin/.sshd
2⤵
PID:1565

/usr/bin/.sshd
/usr/bin/.sshd
3⤵
- Executes dropped EXE
- Writes file to tmp directory
PID:1566

/bin/sh
sh -c "insmod /tmp/xpacket.ko"
2⤵
PID:1600

/sbin/insmod
insmod /tmp/xpacket.ko
3⤵
- Reads runtime system information
PID:1601

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
e47867ffb111644c75f5e21ffb6c256b

SHA1
91a569aa94c84e8121e4ffa737a54516c4ace7f4

SHA256
87199de381962c9fe7e422cc78e0d2ee8d1553ca49a4c4d69af95cf1ae95b87c

SHA512
36a57d305db2124f90a780c4c2e06405c56cb403300b9ee59522e2cbc1fe6565dab8a4a3afec6b88c6a376e9ad47e9a0be94097ce5989d6355e5fa316a6058b6

Download Submit
/etc/init.d/selinux

Filesize
36B

MD5
993cc15058142d96c3daf7852c3d5ee8

SHA1
0950b8b391b04dd3895ea33cd3141543ebd2525d

SHA256
8171d077918611803d93088409f220c66fae1c670b297e1aa5d8cbd548ce9208

SHA512
0c4256c00a3710f97e92581b552682b36b62afc35fe72622c491323c618c19ea62611ac04ccafc3dfcde2254a2ebbd93b69b66795b16e36332293bed83adb928

Download Submit
/tmp/gates.lod

Filesize
4B

MD5
81c8727c62e800be708dbf37c4695dff

SHA1
42e12cb7198394beb558db2dc1f1a862366e1045

SHA256
4091f2c5c45d0cb95c6b43919f9f07f62f7f6c6fb46ca207264b2aee4ee6e4f9

SHA512
a6bb8360a59413364b955cde894976b6f7401d2b07296bf964d224eef87032ac500dccc76b01c445d8e85692d555ae28d672929376e32fe9cf80bb721b9d1632

Download Submit
/tmp/moni.lod

Filesize
4B

MD5
d72fbbccd9fe64c3a14f85d225a046f4

SHA1
348e495881ef4526fe8e38dba4ceaa49b829b8b2

SHA256
8cca04ee02b8915f60a6b72c1faf19923aa12aafb5af89bc4bfd403dc60a836b

SHA512
02107aa7dc8942af948b790560f406445e172eff5c838b73d0eb8d86e3021ff4bcbb310a5f3290b3ff6e46170cd36e2df76fc373b47e3b8e9f219c6f6e22d85f

Download Submit
/tmp/notify.file

Filesize
51B

MD5
24e3af5a5a141b05b55f5819599c7610

SHA1
b27dbfa658c4dc98de080d017c159669c191345b

SHA256
1d4feb162c8fea7b97ab25c407869dea5c1c7e96d4d80b7dfee2791ef0712b44

SHA512
383f3381d3cda0155cd14e90d81dce186ec96356887b82554af4a426e9492d976892a1cad46e7fc6e8b6b9b064156a1d43022fdd470f4323272bcabdb29b6f7b

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

Filesize
1.2MB

MD5
298049890e2f02ba6a507f8d73c7f7dc

SHA1
76ec00fe09b85c2cb1df9363e2919705190f35c5

SHA256
19ba3b2658b0bc0fed89b30286bc28c2d4296cb27c2d758f78596be138317b60

SHA512
1b38b290c3b12078c7cdff7f97a2ce59069671fa0f94ce72d108b0ed366567a1d038e80a0f5e204e578513c1233ca79ff5b655fef92f2ef9767322bb852aed1f

Download Submit
/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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