mrblack | 50c5701fdd522d200d157989a20053b7df18bd4113e166ff42416961895d17da

Analysis

max time kernel
149s
max time network
149s
platform
ubuntu-22.04_amd64
resource
ubuntu2204-amd64-20240611-en
resource tags

arch:amd64arch:i386image:ubuntu2204-amd64-20240611-enkernel:5.15.0-105-genericlocale:en-usos:ubuntu-22.04-amd64system
submitted
29-07-2024 19:51

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General

Target

5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118
Size

1.1MB
MD5

5c45c50ba79bbf2b6b16a5cc68e34db1
SHA1

b41a8b9a6c8968596e86fe20858c47b2c6d49150
SHA256

50c5701fdd522d200d157989a20053b7df18bd4113e166ff42416961895d17da
SHA512

9b769ddf3dc9ff033ae2d62bad298496dd9e606146264cfc7fecd9a4a4a7d7f3735ff7a38e8a0e8188b2c9931869c1e8d13766fd1a5c29a9c696da57de723502
SSDEEP

24576:4vRE7caCfKGPqVEDNLFxKsfaKI+gIGYuuCol7r:4vREKfPqVE5jKsfaKRHGVo7r

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/knerl	family_mrblack

Executes dropped EXE 2 IoCs

Processes:

knerlpythno

ioc pid process

/usr/bin/bsd-port/knerl 1593 knerl
/usr/bin/pythno 1601 pythno

ioc	pid	process
/usr/bin/bsd-port/knerl	1593	knerl
/usr/bin/pythno	1601	pythno

Modifies init.d 1 TTPs 2 IoCs

Adds/modifies system service, likely for persistence.

persistence

Boot or Logon Autostart Execution

T1547

Processes:

5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118knerl

description	ioc	process
File opened for modification	/etc/init.d/VsystemsshMdt	5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118
File opened for modification	/etc/init.d/selinux	knerl

Reads system routing table 1 TTPs 1 IoCs
Gets active network interfaces from /proc virtual filesystem.

System Network Configuration Discovery
T1016

Processes:

5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118

description ioc process

File opened for reading /proc/net/route 5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118

description	ioc	process
File opened for reading	/proc/net/route	5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118

Write file to user bin folder 1 TTPs 9 IoCs

Hijack Execution Flow

T1574

Processes:

cp5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118cpcpcpcpknerlcp

description	ioc	process
File opened for modification	/usr/bin/lsof	cp
File opened for modification	/usr/bin/bsd-port/knerl.conf	5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118
File opened for modification	/usr/bin/bsd-port/udevd.conf	5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118
File opened for modification	/usr/bin/pythno	cp
File opened for modification	/usr/bin/dpkgd/lsof	cp
File opened for modification	/usr/bin/dpkgd/ps	cp
File opened for modification	/usr/bin/bsd-port/knerl	cp
File opened for modification	/usr/bin/bsd-port/knerl.conf	knerl
File opened for modification	/usr/bin/ps	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/lsof 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:

knerl5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118

description ioc process

File opened for reading /proc/cpuinfo knerl
File opened for reading /proc/cpuinfo 5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118

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

description	ioc	process
File opened for reading	/proc/cpuinfo	knerl
File opened for reading	/proc/cpuinfo	5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118

Reads system network configuration 1 TTPs 4 IoCs

Uses contents of /proc filesystem to enumerate network settings.

System Network Configuration Discovery

T1016

Processes:

5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118knerl

description	ioc	process
File opened for reading	/proc/net/dev	5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118
File opened for reading	/proc/net/route	5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118
File opened for reading	/proc/net/arp	5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118
File opened for reading	/proc/net/dev	knerl

Reads runtime system information 24 IoCs

Reads data from /proc virtual filesystem.

Processes:

mkdircpmkdirknerlmkdirpythno5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118cpcpinsmodcpmkdircpcpmkdircpmkdircpmkdirinsmod

description	ioc	process
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	knerl
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/sys/kernel/version	pythno
File opened for reading	/proc/stat	5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/cmdline	insmod
File opened for reading	/proc/sys/kernel/version	5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118
File opened for reading	/proc/sys/kernel/version	knerl
File opened for reading	/proc/meminfo	5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118
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/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/stat	knerl
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/cmdline	insmod

Writes file to tmp directory 8 IoCs

Malware often drops required files in the /tmp directory.

Processes:

5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118pythno

description	ioc	process
File opened for modification	/tmp/notify.file	5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118
File opened for modification	/tmp/idus.log	pythno
File opened for modification	/tmp/notify.file	pythno
File opened for modification	/tmp/conf.n	5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118
File opened for modification	/tmp/vga.conf	pythno
File opened for modification	/tmp/idus.log	5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118
File opened for modification	/tmp/apsh.conf	5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118
File opened for modification	/tmp/vga.conf	5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118

/tmp/5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118
/tmp/5c45c50ba79bbf2b6b16a5cc68e34db1_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:1565

/bin/sh
sh -c "ln -s /etc/init.d/VsystemsshMdt /etc/rc1.d/S97VsystemsshMdt"
2⤵
PID:1577

/usr/bin/ln
ln -s /etc/init.d/VsystemsshMdt /etc/rc1.d/S97VsystemsshMdt
3⤵
PID:1578

/bin/sh
sh -c "ln -s /etc/init.d/VsystemsshMdt /etc/rc2.d/S97VsystemsshMdt"
2⤵
PID:1579

/usr/bin/ln
ln -s /etc/init.d/VsystemsshMdt /etc/rc2.d/S97VsystemsshMdt
3⤵
PID:1580

/bin/sh
sh -c "ln -s /etc/init.d/VsystemsshMdt /etc/rc3.d/S97VsystemsshMdt"
2⤵
PID:1581

/usr/bin/ln
ln -s /etc/init.d/VsystemsshMdt /etc/rc3.d/S97VsystemsshMdt
3⤵
PID:1582

/bin/sh
sh -c "ln -s /etc/init.d/VsystemsshMdt /etc/rc4.d/S97VsystemsshMdt"
2⤵
PID:1583

/usr/bin/ln
ln -s /etc/init.d/VsystemsshMdt /etc/rc4.d/S97VsystemsshMdt
3⤵
PID:1584

/bin/sh
sh -c "ln -s /etc/init.d/VsystemsshMdt /etc/rc5.d/S97VsystemsshMdt"
2⤵
PID:1585

/usr/bin/ln
ln -s /etc/init.d/VsystemsshMdt /etc/rc5.d/S97VsystemsshMdt
3⤵
PID:1586

/bin/sh
sh -c "mkdir -p /usr/bin/bsd-port"
2⤵
PID:1587

/usr/bin/mkdir
mkdir -p /usr/bin/bsd-port
3⤵
- Reads runtime system information
PID:1588

/bin/sh
sh -c "cp -f /tmp/5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118 /usr/bin/bsd-port/knerl"
2⤵
PID:1589

/usr/bin/cp
cp -f /tmp/5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118 /usr/bin/bsd-port/knerl
3⤵
- Write file to user bin folder
- Reads runtime system information
PID:1590

/bin/sh
sh -c /usr/bin/bsd-port/knerl
2⤵
PID:1592

/usr/bin/bsd-port/knerl
/usr/bin/bsd-port/knerl
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:1593

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"
4⤵
PID:1608

/usr/bin/ln
ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
5⤵
PID:1609

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"
4⤵
PID:1610

/usr/bin/ln
ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
5⤵
PID:1611

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"
4⤵
PID:1612

/usr/bin/ln
ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
5⤵
PID:1613

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"
4⤵
PID:1615

/usr/bin/ln
ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
5⤵
PID:1616

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"
4⤵
PID:1617

/usr/bin/ln
ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
5⤵
PID:1618

/bin/sh
sh -c "mkdir -p /usr/bin/dpkgd"
4⤵
PID:1619

/usr/bin/mkdir
mkdir -p /usr/bin/dpkgd
5⤵
- Reads runtime system information
PID:1620

/bin/sh
sh -c "cp -f /bin/lsof /usr/bin/dpkgd/lsof"
4⤵
PID:1622

/usr/bin/cp
cp -f /bin/lsof /usr/bin/dpkgd/lsof
5⤵
- Write file to user bin folder
- Reads runtime system information
PID:1623

/bin/sh
sh -c "mkdir -p /bin"
4⤵
PID:1625

/usr/bin/mkdir
mkdir -p /bin
5⤵
- Reads runtime system information
PID:1626

/bin/sh
sh -c "cp -f /usr/bin/bsd-port/knerl /bin/lsof"
4⤵
PID:1627

/usr/bin/cp
cp -f /usr/bin/bsd-port/knerl /bin/lsof
5⤵
- Writes file to system bin folder
- Reads runtime system information
PID:1628

/bin/sh
sh -c "chmod 0755 /bin/lsof"
4⤵
PID:1629

/usr/bin/chmod
chmod 0755 /bin/lsof
5⤵
PID:1630

/bin/sh
sh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"
4⤵
PID:1632

/usr/bin/cp
cp -f /bin/ps /usr/bin/dpkgd/ps
5⤵
- Write file to user bin folder
- Reads runtime system information
PID:1633

/bin/sh
sh -c "mkdir -p /bin"
4⤵
PID:1635

/usr/bin/mkdir
mkdir -p /bin
5⤵
- Reads runtime system information
PID:1636

/bin/sh
sh -c "cp -f /usr/bin/bsd-port/knerl /bin/ps"
4⤵
PID:1637

/usr/bin/cp
cp -f /usr/bin/bsd-port/knerl /bin/ps
5⤵
- Writes file to system bin folder
- Reads runtime system information
PID:1638

/bin/sh
sh -c "chmod 0755 /bin/ps"
4⤵
PID:1639

/usr/bin/chmod
chmod 0755 /bin/ps
5⤵
PID:1640

/bin/sh
sh -c "mkdir -p /usr/bin"
4⤵
PID:1641

/usr/bin/mkdir
mkdir -p /usr/bin
5⤵
- Reads runtime system information
PID:1642

/bin/sh
sh -c "cp -f /usr/bin/bsd-port/knerl /usr/bin/lsof"
4⤵
PID:1643

/usr/bin/cp
cp -f /usr/bin/bsd-port/knerl /usr/bin/lsof
5⤵
- Write file to user bin folder
- Reads runtime system information
PID:1644

/bin/sh
sh -c "chmod 0755 /usr/bin/lsof"
4⤵
PID:1645

/usr/bin/chmod
chmod 0755 /usr/bin/lsof
5⤵
PID:1646

/bin/sh
sh -c "mkdir -p /usr/bin"
4⤵
PID:1647

/usr/bin/mkdir
mkdir -p /usr/bin
5⤵
- Reads runtime system information
PID:1648

/bin/sh
sh -c "cp -f /usr/bin/bsd-port/knerl /usr/bin/ps"
4⤵
PID:1649

/usr/bin/cp
cp -f /usr/bin/bsd-port/knerl /usr/bin/ps
5⤵
- Write file to user bin folder
- Reads runtime system information
PID:1650

/bin/sh
sh -c "chmod 0755 /usr/bin/ps"
4⤵
PID:1651

/usr/bin/chmod
chmod 0755 /usr/bin/ps
5⤵
PID:1652

/bin/sh
sh -c "insmod /usr/lib/xpacket.ko"
4⤵
PID:1653

/usr/sbin/insmod
insmod /usr/lib/xpacket.ko
5⤵
- Reads runtime system information
PID:1654

/bin/sh
sh -c "mkdir -p /usr/bin"
2⤵
PID:1595

/usr/bin/mkdir
mkdir -p /usr/bin
3⤵
- Reads runtime system information
PID:1596

/bin/sh
sh -c "cp -f /tmp/5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118 /usr/bin/pythno"
2⤵
PID:1597

/usr/bin/cp
cp -f /tmp/5c45c50ba79bbf2b6b16a5cc68e34db1_JaffaCakes118 /usr/bin/pythno
3⤵
- Write file to user bin folder
- Reads runtime system information
PID:1598

/bin/sh
sh -c /usr/bin/pythno
2⤵
PID:1600

/usr/bin/pythno
/usr/bin/pythno
3⤵
- Executes dropped EXE
- Reads runtime system information
- Writes file to tmp directory
PID:1601

/bin/sh
sh -c "insmod /usr/lib/xpacket.ko"
2⤵
PID:1603

/usr/sbin/insmod
insmod /usr/lib/xpacket.ko
3⤵
- Reads runtime system information
PID:1604

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/VsystemsshMdt

Filesize
64B

MD5
5dfcd687354ef319b73a2af531e36355

SHA1
f28900dea9a1cabaa4c3e14274bb610ab3e0d6d1

SHA256
a3ebb5ef7f9fa6e8331a4e39e650d689ee568b30024c02e8d2ccbeb923415ea4

SHA512
c08b27080536ffe98a6a7cefa89627a8e9f8c002aeeae06f8d8c6be469c31348f026551a370d812a8bd54838480c11608dbb70e9764fac672af0c2eabe543dc4

Download Submit
/etc/init.d/selinux

Filesize
36B

MD5
caa27b819c9303446f702929874a00e8

SHA1
d24199c0e376edea3f822b215148cc0dc78364bf

SHA256
da9b535a14c6d9152857e211f14fb8da9056e84ba1b8d4dc27ab79c98264050b

SHA512
dcd9413eb2cb24d77f637edfc00ca0bb42229a1a3b0d84e29eff94a7b91aee6ee8c126c286a4b4103e01834d1c6aec9de09ffab3927e8de8015421005f31446e

Download Submit
/tmp/conf.n

Filesize
69B

MD5
63a301ad97bab469e885ce5e67cc0de6

SHA1
f9e2900df797be2ff4911b7d36788412e3bf4748

SHA256
9279e7b6573b4b9fe816982608f2cf9f9f0b47068eaf547fa7b2eeae2ef82dd3

SHA512
53fe0c43cefb9a3ec9a2d1131d2bff886e74c666c40e34893db6c5357e2af38e723fc11690d9a9778209349bef793cedf0c335f1176029956e104adfc0fbf4fd

Download Submit
/tmp/idus.log

Filesize
4B

MD5
1bc0249a6412ef49b07fe6f62e6dc8de

SHA1
61f348dbfc99215070417b9d49da662cfd0671ef

SHA256
2f57a2e309c463513b962750096f4389e229001dccc19afcb95ff98c70e14d09

SHA512
e51fc38acc801d470d658cb9ec9f66f4a8cbcd96fb613c20bc43bbd4162ccd6c7bd223a5832f7e8eeadaa3a946a587b76c3c2e1eb1d16e6eb63ece3cbec0aa1c

Download Submit
/tmp/notify.file

Filesize
51B

MD5
3ff1291df61d05b9ef6439d9e5eb879c

SHA1
615add0601a8580311a61213f21860ec20dc6097

SHA256
9a15246a48da10d66eac55450945c4233dd2ccebe830294fa13eb67e913867bc

SHA512
78b1dbc45af7afa128a8725f0bcca41890c41b2dca98ade9497c14318d9488de0d585f4988571f3fd6d053062dd57b573feb1c826636b0b95b44a6a06c45fc9d

Download Submit
/tmp/vga.conf

Filesize
4B

MD5
be53ee61104935234b174e62a07e53cf

SHA1
150afba2f606bf3e450d7dbfba16c6673580cb77

SHA256
a9ffbdf317b2dabf198f59653da551149ad51173b2014ae1df5d183c2ddfcf26

SHA512
be6aab77ff13b95b184c78f1e5fd75e661c1d5817b96d9c914f32e016ce9de260423934e48ec592bc8a0caf5f39e79fb584be0f779fe51c4b991afde8b623428

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

Filesize
1.1MB

MD5
5c45c50ba79bbf2b6b16a5cc68e34db1

SHA1
b41a8b9a6c8968596e86fe20858c47b2c6d49150

SHA256
50c5701fdd522d200d157989a20053b7df18bd4113e166ff42416961895d17da

SHA512
9b769ddf3dc9ff033ae2d62bad298496dd9e606146264cfc7fecd9a4a4a7d7f3735ff7a38e8a0e8188b2c9931869c1e8d13766fd1a5c29a9c696da57de723502

Download Submit
/usr/bin/dpkgd/lsof

Filesize
163KB

MD5
ab57b66cc531ae0f996963223e632b60

SHA1
bf7e5becd33f21c2539f5a75ffa0ab61c49c8795

SHA256
2484863a7bfda7f97b90bfd5dfceed4ec9f27dd51f9c5158c8daabbf4309b1df

SHA512
908acef13f3c1d80b7169ec3b16bb67006013453348fff75550bc3c6c2137e798b21d7990edbd5be63d756d9c41b06160aebf38aa80547e4bafa3a62596057f6

Download Submit
/usr/bin/dpkgd/ps

Filesize
138KB

MD5
8146139c2ad7e550b1d1f49480997446

SHA1
074db8890c3227bd8a588417f5b9bde637bcf3af

SHA256
207df9d438f75185ab3af2ab1173d104831a6631c28ef40d38b2ab43de27b40f

SHA512
b6d71d537f593b9af833e6f798e412e95fc486a313414ed8cca9639f61be7ac9dca700e9f861c0d07c7f65b3783127a67f829f422472cad8938ba01d397ab9de

Download Submit