mrblack | 36195151c05923c5f267cd2f8f24747af9fa4e73efdc44029f0581591be3c542

Analysis

max time kernel
149s
max time network
150s
platform
ubuntu-18.04_amd64
resource
ubuntu1804-amd64-20240508-en
resource tags

arch:amd64arch:i386image:ubuntu1804-amd64-20240508-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
submitted
10-05-2024 13:11

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General

Target

2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118
Size

1.2MB
MD5

2f45ba3f2ea6cad5cc0f45f8de9bbe4f
SHA1

da52567c7406ae720e5fc6489868b4fae1a855d0
SHA256

36195151c05923c5f267cd2f8f24747af9fa4e73efdc44029f0581591be3c542
SHA512

fe0e3e2de301dfddec95ae76b4bd29df9ace6bf1447318a2f9022a9377d861e43d1518e95a3c56888d649698908a310cbc46a31b482fda882213a3705253f419
SSDEEP

24576:e845rGHu6gVJKG75oFpA0VWIX4k2y1q2rJp0:745vRVJKGtSA0VWIoru9p0

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 1509 getty
/usr/bin/.sshd 1528 .sshd

ioc	pid	process
/usr/bin/bsd-port/getty	1509	getty
/usr/bin/.sshd	1528	.sshd

Modifies init.d 1 TTPs 2 IoCs

Adds/modifies system service, likely for persistence.

persistence

Boot or Logon Autostart Execution

T1547

Processes:

2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118getty

description	ioc	process
File opened for modification	/etc/init.d/DbSecuritySpt	2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118
File opened for modification	/etc/init.d/selinux	getty

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

System Network Configuration Discovery
T1016

Processes:

2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118

description ioc process

File opened for reading /proc/net/route 2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118

description	ioc	process
File opened for reading	/proc/net/route	2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118

Write file to user bin folder 1 TTPs 9 IoCs

Hijack Execution Flow

T1574

Processes:

2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118cpgettycpcpcpcpcp

description	ioc	process
File opened for modification	/usr/bin/bsd-port/udevd.lock	2f45ba3f2ea6cad5cc0f45f8de9bbe4f_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/dpkgd/ss	cp
File opened for modification	/usr/bin/dpkgd/lsof	cp
File opened for modification	/usr/bin/bsd-port/getty.lock	2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118
File opened for modification	/usr/bin/dpkgd/ps	cp
File opened for modification	/usr/bin/lsof	cp
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:

getty2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118

description ioc process

File opened for reading /proc/cpuinfo getty
File opened for reading /proc/cpuinfo 2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118

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	2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118

Reads system network configuration 1 TTPs 4 IoCs

Uses contents of /proc filesystem to enumerate network settings.

System Network Configuration Discovery

T1016

Processes:

2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118getty

description	ioc	process
File opened for reading	/proc/net/dev	2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118
File opened for reading	/proc/net/route	2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118
File opened for reading	/proc/net/arp	2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118
File opened for reading	/proc/net/dev	getty

Reads runtime system information 25 IoCs

Reads data from /proc virtual filesystem.

Processes:

mkdircpmkdircpmkdirgettymkdircpmkdir2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118insmodcpmkdircpmkdircpmkdircpinsmodmkdircpmkdirmkdir

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/filesystems	cp
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/stat	getty
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	2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118
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	cp
File opened for reading	/proc/meminfo	getty
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	cp
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/stat	2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118

Writes file to tmp directory 8 IoCs

Malware often drops required files in the /tmp directory.

Processes:

.sshd2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118

description	ioc	process
File opened for modification	/tmp/moni.lod	.sshd
File opened for modification	/tmp/notify.file	.sshd
File opened for modification	/tmp/conf.n	2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118
File opened for modification	/tmp/gates.lod	.sshd
File opened for modification	/tmp/moni.lod	2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118
File opened for modification	/tmp/bill.lock	2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118
File opened for modification	/tmp/gates.lod	2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118
File opened for modification	/tmp/notify.file	2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118

/tmp/2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118
/tmp/2f45ba3f2ea6cad5cc0f45f8de9bbe4f_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:1478

/bin/sh
sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt"
2⤵
PID:1491

/bin/ln
ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt
3⤵
PID:1492

/bin/sh
sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt"
2⤵
PID:1493

/bin/ln
ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt
3⤵
PID:1494

/bin/sh
sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt"
2⤵
PID:1495

/bin/ln
ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt
3⤵
PID:1496

/bin/sh
sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt"
2⤵
PID:1497

/bin/ln
ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt
3⤵
PID:1498

/bin/sh
sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt"
2⤵
PID:1499

/bin/ln
ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt
3⤵
PID:1500

/bin/sh
sh -c "mkdir -p /usr/bin/bsd-port"
2⤵
PID:1501

/bin/mkdir
mkdir -p /usr/bin/bsd-port
3⤵
- Reads runtime system information
PID:1502

/bin/sh
sh -c "mkdir -p /usr/bin/bsd-port"
2⤵
PID:1503

/bin/mkdir
mkdir -p /usr/bin/bsd-port
3⤵
- Reads runtime system information
PID:1504

/bin/sh
sh -c "cp -f /tmp/2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118 /usr/bin/bsd-port/getty"
2⤵
PID:1505

/bin/cp
cp -f /tmp/2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118 /usr/bin/bsd-port/getty
3⤵
- Write file to user bin folder
- Reads runtime system information
PID:1506

/bin/sh
sh -c /usr/bin/bsd-port/getty
2⤵
PID:1508

/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:1509

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"
4⤵
PID:1517

/bin/ln
ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
5⤵
PID:1518

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"
4⤵
PID:1519

/bin/ln
ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
5⤵
PID:1520

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"
4⤵
PID:1521

/bin/ln
ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
5⤵
PID:1522

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"
4⤵
PID:1523

/bin/ln
ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
5⤵
PID:1524

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"
4⤵
PID:1525

/bin/ln
ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
5⤵
PID:1529

/bin/sh
sh -c "mkdir -p /usr/bin/dpkgd"
4⤵
PID:1530

/bin/mkdir
mkdir -p /usr/bin/dpkgd
5⤵
- Reads runtime system information
PID:1531

/bin/sh
sh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"
4⤵
PID:1532

/bin/cp
cp -f /bin/ps /usr/bin/dpkgd/ps
5⤵
- Write file to user bin folder
- Reads runtime system information
PID:1533

/bin/sh
sh -c "mkdir -p /bin"
4⤵
PID:1534

/bin/mkdir
mkdir -p /bin
5⤵
- Reads runtime system information
PID:1535

/bin/sh
sh -c "mkdir -p /bin"
4⤵
PID:1536

/bin/mkdir
mkdir -p /bin
5⤵
- Reads runtime system information
PID:1537

/bin/sh
sh -c "cp -f /usr/bin/bsd-port/getty /bin/ps"
4⤵
PID:1538

/bin/cp
cp -f /usr/bin/bsd-port/getty /bin/ps
5⤵
- Writes file to system bin folder
- Reads runtime system information
PID:1539

/bin/sh
sh -c "chmod 0755 /bin/ps"
4⤵
PID:1542

/bin/chmod
chmod 0755 /bin/ps
5⤵
PID:1543

/bin/sh
sh -c "cp -f /bin/ss /usr/bin/dpkgd/ss"
4⤵
PID:1544

/bin/cp
cp -f /bin/ss /usr/bin/dpkgd/ss
5⤵
- Write file to user bin folder
- Reads runtime system information
PID:1545

/bin/sh
sh -c "mkdir -p /bin"
4⤵
PID:1546

/bin/mkdir
mkdir -p /bin
5⤵
- Reads runtime system information
PID:1547

/bin/sh
sh -c "mkdir -p /bin"
4⤵
PID:1548

/bin/mkdir
mkdir -p /bin
5⤵
- Reads runtime system information
PID:1549

/bin/sh
sh -c "cp -f /usr/bin/bsd-port/getty /bin/ss"
4⤵
PID:1550

/bin/cp
cp -f /usr/bin/bsd-port/getty /bin/ss
5⤵
- Writes file to system bin folder
- Reads runtime system information
PID:1551

/bin/sh
sh -c "chmod 0755 /bin/ss"
4⤵
PID:1552

/bin/chmod
chmod 0755 /bin/ss
5⤵
PID:1553

/bin/sh
sh -c "cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof"
4⤵
PID:1554

/bin/cp
cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof
5⤵
- Write file to user bin folder
- Reads runtime system information
PID:1555

/bin/sh
sh -c "mkdir -p /usr/bin"
4⤵
PID:1556

/bin/mkdir
mkdir -p /usr/bin
5⤵
- Reads runtime system information
PID:1557

/bin/sh
sh -c "mkdir -p /usr/bin"
4⤵
PID:1558

/bin/mkdir
mkdir -p /usr/bin
5⤵
- Reads runtime system information
PID:1559

/bin/sh
sh -c "cp -f /usr/bin/bsd-port/getty /usr/bin/lsof"
4⤵
PID:1560

/bin/cp
cp -f /usr/bin/bsd-port/getty /usr/bin/lsof
5⤵
- Write file to user bin folder
- Reads runtime system information
PID:1561

/bin/sh
sh -c "chmod 0755 /usr/bin/lsof"
4⤵
PID:1562

/bin/chmod
chmod 0755 /usr/bin/lsof
5⤵
PID:1563

/bin/sh
sh -c "insmod /usr/bin/bsd-port/xpacket.ko"
4⤵
PID:1575

/sbin/insmod
insmod /usr/bin/bsd-port/xpacket.ko
5⤵
- Reads runtime system information
PID:1576

/bin/sh
sh -c "mkdir -p /usr/bin"
2⤵
PID:1511

/bin/mkdir
mkdir -p /usr/bin
3⤵
- Reads runtime system information
PID:1512

/bin/sh
sh -c "mkdir -p /usr/bin"
2⤵
PID:1513

/bin/mkdir
mkdir -p /usr/bin
3⤵
- Reads runtime system information
PID:1514

/bin/sh
sh -c "cp -f /tmp/2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118 /usr/bin/.sshd"
2⤵
PID:1515

/bin/cp
cp -f /tmp/2f45ba3f2ea6cad5cc0f45f8de9bbe4f_JaffaCakes118 /usr/bin/.sshd
3⤵
- Write file to user bin folder
- Reads runtime system information
PID:1516

/bin/sh
sh -c /usr/bin/.sshd
2⤵
PID:1527

/usr/bin/.sshd
/usr/bin/.sshd
3⤵
- Executes dropped EXE
- Writes file to tmp directory
PID:1528

/bin/sh
sh -c "insmod /tmp/xpacket.ko"
2⤵
PID:1564

/sbin/insmod
insmod /tmp/xpacket.ko
3⤵
- Reads runtime system information
PID:1565

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

/etc/init.d/DbSecuritySpt
Filesize
64B

MD5
9a36d7dedc170308b8f9fca76c28dfaa

SHA1
46ec4e0ee3c3c18f1444b2e67a2c71e386f15a09

SHA256
01a3bc689a59e1efe6db0e643da7f57c551755d93b97725d305088f3dadd4f71

SHA512
a5bfae1ecb859d3ddbb52542b7bc8dd31ec52e14f42bb8f563de8ecd235267d09c9b31f4aa751dd8dd508c3cb0ee2d64b6a907983084ae80018f138b10e16255

Download Submit
/etc/init.d/selinux
Filesize
36B

MD5
993cc15058142d96c3daf7852c3d5ee8

SHA1
0950b8b391b04dd3895ea33cd3141543ebd2525d

SHA256
8171d077918611803d93088409f220c66fae1c670b297e1aa5d8cbd548ce9208

SHA512
0c4256c00a3710f97e92581b552682b36b62afc35fe72622c491323c618c19ea62611ac04ccafc3dfcde2254a2ebbd93b69b66795b16e36332293bed83adb928

Download Submit
/tmp/gates.lod
Filesize
4B

MD5
dc09c97fd73d7a324bdbfe7c79525f64

SHA1
c1183f16ab610230ebe8a9bcb331d2d6f7ebbf66

SHA256
8c40a6d264e529987be355b303cb08181b8595753e3ef3c8f4bdc29859ac5605

SHA512
dc202510bf97bb4c8c35628c00c9561a94f49c20894426e0c2828dfa8723444cbc364b8721edd3fb6f988515680ff96962633bbac9e25631865b68e3e7375f19

Download Submit
/tmp/moni.lod
Filesize
4B

MD5
cda72177eba360ff16b7f836e2754370

SHA1
0de7f57bd4db22d7e4a43004aea93b1f0a484259

SHA256
c73c63198a1338f0d19547e3d07db9dc25babedc30ae35b80426d48afe73624c

SHA512
a317aaae56af82ef6f653ee4554a2f95a93a7a2f9caf20603e7d9a2ed59ec43f1edc3a9b64437d8be4555cc608872ea65e6db7205f734770720ce5d7ec348ae1

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/tmp/notify.file
Filesize
51B

MD5
b37e8be49566eaf1fcbbf8bff140c024

SHA1
6f676925e08c2c1d1ebf22107892c627ee1a26df

SHA256
5c5112582ae7387956405f087769f35a1140eb0ef43da389c652f8e854e71813

SHA512
4b6c56c507cedbbe5534419d55955a2d8ad617482f9a018fb772e48a682d2a782b8889c746aabb0be9c798abcde0f7dab6108d5443ff800db689576d4d51764e

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/usr/bin/bsd-port/getty
Filesize
1.2MB

MD5
2f45ba3f2ea6cad5cc0f45f8de9bbe4f

SHA1
da52567c7406ae720e5fc6489868b4fae1a855d0

SHA256
36195151c05923c5f267cd2f8f24747af9fa4e73efdc44029f0581591be3c542

SHA512
fe0e3e2de301dfddec95ae76b4bd29df9ace6bf1447318a2f9022a9377d861e43d1518e95a3c56888d649698908a310cbc46a31b482fda882213a3705253f419

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

Download Submit