mrblack | c90fef14d8b59c7c037acbcd310a0985f6053ebbefbd8e1f3b6f873c62fe1a8c

Analysis

max time kernel
153s
max time network
153s
platform
ubuntu-18.04_amd64
resource
ubuntu1804-amd64-20231215-en
resource tags

arch:amd64arch:i386image:ubuntu1804-amd64-20231215-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
submitted
21-12-2023 21:57

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General

Target

0ab61a2da442f3f3c44e18e8e4e57892
Size

1.1MB
MD5

0ab61a2da442f3f3c44e18e8e4e57892
SHA1

99a1baef2afd91cb86aac6758a7f4ff86981c6b0
SHA256

c90fef14d8b59c7c037acbcd310a0985f6053ebbefbd8e1f3b6f873c62fe1a8c
SHA512

c69d516d8952de63901d730183c8e5df5980495a525d8b75bf846908b722aae6a5948094743aaafd83af454ec26b7d1ad0e9dc61099a9766e8d15ab57bc8e141
SSDEEP

24576:4vRE7caCfKGPqVEDNLFxKsfaCI+gIGYuuCol7r:4vREKfPqVE5jKsfaCRHGVo7r

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 2 IoCs

resource	yara_rule
behavioral1/files/fstream-4.dat	family_mrblack
behavioral1/files/fstream-6.dat	family_mrblack

Executes dropped EXE 2 IoCs

ioc	pid	Process
/usr/bin/bsd-port/agent	1569	agent
/usr/bin/acpid	1577	acpid

Checks CPU configuration 1 TTPs 1 IoCs

Checks CPU information which indicate if the system is a virtual machine.

antivm

Virtualization/Sandbox Evasion

T1497

description	ioc
File opened for reading	/proc/cpuinfo

Modifies init.d 1 TTPs 2 IoCs

Adds/modifies system service, likely for persistence.

persistence

Boot or Logon Autostart Execution

T1547

description	ioc
File opened for modification	/etc/init.d/DbSecurityMdt
File opened for modification	/etc/init.d/selinux

Reads system routing table 1 TTPs 1 IoCs

Gets active network interfaces from /proc virtual filesystem.

System Network Configuration Discovery

T1016

description	ioc
File opened for reading	/proc/net/route

Write file to user bin folder 1 TTPs 8 IoCs

Hijack Execution Flow

T1574

description	ioc	Process
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
File opened for modification	/usr/bin/bsd-port/conf.n	Process not Found
File opened for modification	/usr/bin/bsd-port/agent.conf	Process not Found
File opened for modification	/usr/bin/bsd-port/udevd.conf	Process not Found
File opened for modification	/usr/bin/bsd-port/agent	cp
File opened for modification	/usr/bin/acpid	cp

Writes file to system bin folder 1 TTPs 1 IoCs

Hijack Execution Flow

T1574

description	ioc	Process
File opened for modification	/bin/ps	cp

Reads system network configuration 1 TTPs 3 IoCs

Uses contents of /proc filesystem to enumerate network settings.

System Network Configuration Discovery

T1016

description	ioc
File opened for reading	/proc/net/dev
File opened for reading	/proc/net/route
File opened for reading	/proc/net/arp

Reads runtime system information 15 IoCs

Reads data from /proc virtual filesystem.

description	ioc	Process
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	cp
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/meminfo	Process not Found
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/stat	Process not Found
File opened for reading	/proc/cmdline	insmod

Writes file to tmp directory 4 IoCs

Malware often drops required files in the /tmp directory.

description	ioc
File opened for modification	/tmp/notify.file
File opened for modification	/tmp/moni.note
File opened for modification	/tmp/bill.note
File opened for modification	/tmp/gates.note

/tmp/0ab61a2da442f3f3c44e18e8e4e57892
/tmp/0ab61a2da442f3f3c44e18e8e4e57892
1⤵
PID:1534

/bin/sh
sh -c "ln -s /etc/init.d/DbSecurityMdt /etc/rc1.d/S97DbSecurityMdt"
1⤵
PID:1543
- /bin/ln
  ln -s /etc/init.d/DbSecurityMdt /etc/rc1.d/S97DbSecurityMdt
  2⤵
  PID:1544

/bin/sh
sh -c "ln -s /etc/init.d/DbSecurityMdt /etc/rc2.d/S97DbSecurityMdt"
1⤵
PID:1545
- /bin/ln
  ln -s /etc/init.d/DbSecurityMdt /etc/rc2.d/S97DbSecurityMdt
  2⤵
  PID:1546

/bin/sh
sh -c "ln -s /etc/init.d/DbSecurityMdt /etc/rc3.d/S97DbSecurityMdt"
1⤵
PID:1547
- /bin/ln
  ln -s /etc/init.d/DbSecurityMdt /etc/rc3.d/S97DbSecurityMdt
  2⤵
  PID:1548

/bin/sh
sh -c "ln -s /etc/init.d/DbSecurityMdt /etc/rc4.d/S97DbSecurityMdt"
1⤵
PID:1549
- /bin/ln
  ln -s /etc/init.d/DbSecurityMdt /etc/rc4.d/S97DbSecurityMdt
  2⤵
  PID:1550

/bin/sh
sh -c "ln -s /etc/init.d/DbSecurityMdt /etc/rc5.d/S97DbSecurityMdt"
1⤵
PID:1551
- /bin/ln
  ln -s /etc/init.d/DbSecurityMdt /etc/rc5.d/S97DbSecurityMdt
  2⤵
  PID:1552

/bin/sh
sh -c "mkdir -p /usr/bin/bsd-port"
1⤵
PID:1563
- /bin/mkdir
  mkdir -p /usr/bin/bsd-port
  2⤵
  - Reads runtime system information
  PID:1564

/bin/sh
sh -c "cp -f /tmp/0ab61a2da442f3f3c44e18e8e4e57892 /usr/bin/bsd-port/agent"
1⤵
PID:1565
- /bin/cp
  cp -f /tmp/0ab61a2da442f3f3c44e18e8e4e57892 /usr/bin/bsd-port/agent
  2⤵
  - Write file to user bin folder
  - Reads runtime system information
  PID:1566

/bin/sh
sh -c /usr/bin/bsd-port/agent
1⤵
PID:1568
- /usr/bin/bsd-port/agent
  /usr/bin/bsd-port/agent
  2⤵
  - Executes dropped EXE
  PID:1569

/bin/sh
sh -c "mkdir -p /usr/bin"
1⤵
PID:1571
- /bin/mkdir
  mkdir -p /usr/bin
  2⤵
  - Reads runtime system information
  PID:1572

/bin/sh
sh -c "cp -f /tmp/0ab61a2da442f3f3c44e18e8e4e57892 /usr/bin/acpid"
1⤵
PID:1573
- /bin/cp
  cp -f /tmp/0ab61a2da442f3f3c44e18e8e4e57892 /usr/bin/acpid
  2⤵
  - Write file to user bin folder
  - Reads runtime system information
  PID:1574

/bin/sh
sh -c /usr/bin/acpid
1⤵
PID:1576
- /usr/bin/acpid
  /usr/bin/acpid
  2⤵
  - Executes dropped EXE
  PID:1577

/bin/sh
sh -c "insmod /usr/lib/xpacket.ko"
1⤵
PID:1579
- /sbin/insmod
  insmod /usr/lib/xpacket.ko
  2⤵
  - Reads runtime system information
  PID:1580

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"
1⤵
PID:1585
- /bin/ln
  ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
  2⤵
  PID:1586

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"
1⤵
PID:1588
- /bin/ln
  ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
  2⤵
  PID:1589

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"
1⤵
PID:1591
- /bin/ln
  ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
  2⤵
  PID:1593

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"
1⤵
PID:1594
- /bin/ln
  ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
  2⤵
  PID:1595

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"
1⤵
PID:1596
- /bin/ln
  ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
  2⤵
  PID:1597

/bin/sh
sh -c "mkdir -p /usr/bin/dpkgd"
1⤵
PID:1598
- /bin/mkdir
  mkdir -p /usr/bin/dpkgd
  2⤵
  - Reads runtime system information
  PID:1599

/bin/sh
sh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"
1⤵
PID:1600
- /bin/cp
  cp -f /bin/ps /usr/bin/dpkgd/ps
  2⤵
  - Write file to user bin folder
  - Reads runtime system information
  PID:1601

/bin/sh
sh -c "mkdir -p /bin"
1⤵
PID:1602
- /bin/mkdir
  mkdir -p /bin
  2⤵
  - Reads runtime system information
  PID:1603

/bin/sh
sh -c "cp -f /usr/bin/bsd-port/agent /bin/ps"
1⤵
PID:1604
- /bin/cp
  cp -f /usr/bin/bsd-port/agent /bin/ps
  2⤵
  - Writes file to system bin folder
  - Reads runtime system information
  PID:1605

/bin/sh
sh -c "chmod 0755 /bin/ps"
1⤵
PID:1606
- /bin/chmod
  chmod 0755 /bin/ps
  2⤵
  PID:1607

/bin/sh
sh -c "cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof"
1⤵
PID:1608
- /bin/cp
  cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof
  2⤵
  - Write file to user bin folder
  - Reads runtime system information
  PID:1609

/bin/sh
sh -c "mkdir -p /usr/bin"
1⤵
PID:1610
- /bin/mkdir
  mkdir -p /usr/bin
  2⤵
  - Reads runtime system information
  PID:1611

/bin/sh
sh -c "cp -f /usr/bin/bsd-port/agent /usr/bin/lsof"
1⤵
PID:1612
- /bin/cp
  cp -f /usr/bin/bsd-port/agent /usr/bin/lsof
  2⤵
  - Write file to user bin folder
  - Reads runtime system information
  PID:1613

/bin/sh
sh -c "chmod 0755 /usr/bin/lsof"
1⤵
PID:1615
- /bin/chmod
  chmod 0755 /usr/bin/lsof
  2⤵
  PID:1616

/bin/sh
sh -c "insmod /usr/lib/xpacket.ko"
1⤵
PID:1617
- /sbin/insmod
  insmod /usr/lib/xpacket.ko
  2⤵
  - Reads runtime system information
  PID:1618

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

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Downloads

/etc/init.d/DbSecurityMdt

Filesize
50B

MD5
96189e870f4baa17aee6ea5d1ca72e96

SHA1
232285b121072e9f112c4e14c72d9bfefbce8225

SHA256
dd5cededd92e7247cd7a77e3f22b7cc559283e5dc38dccfb2448711c3cee9811

SHA512
558580edb2f201b28da25c01ca2b60f2b6262a29930e5716aca94244f6471557ca2929e44a5425784f6a4eae6cd85261f7ec2ebd348526786a606b458435c98c

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/etc/init.d/selinux

Filesize
36B

MD5
c6a80f08539a4c3176762f514976dd24

SHA1
bbc5826b01d20f5c4d315ff5dbc3f216760c64ef

SHA256
ea47e885ae227059ce55d020335f7869c565ec6d85f484497e83cd4998149d5d

SHA512
9a1e3b0142876305fe389e07880bd586e97bf709273a66299d9128ff2861459104054d4e5d836aecdf73f2c11886fa3a2a8498741adb3211b96116658b856175

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/tmp/gates.note

Filesize
4B

MD5
748ba69d3e8d1af87f84fee909eef339

SHA1
64738e27dc960ebdc22143dd8ea4b16b74029c8a

SHA256
7ab74ac64fd9a732609f768e00ca317591dbe8d6c340bc4d848fb1a79fa00d97

SHA512
4f2379cb25c3fccd3995c9040959208ef2fa3d779b57329d28a819fd1e67801c08937a0e719f35538bf1e4b6ce276764021b9e1097efd8bab7a48bdfc626792d

Download Submit
/tmp/moni.note

Filesize
4B

MD5
95d309f0b035d97f69902e7972c2b2e6

SHA1
925d1b50cf96fe5447879b4b57ef57c168e4fc34

SHA256
c6437e0ba0560952cb942343f521c60fc3f2247dd1aebf95460c1a070b263051

SHA512
3daf0e76b34d4bb1db74a191ca24bb736ce79d0e2fd11fb71daeb33b414ca121d3f45f48b709ed4d6f710893507db3159a2129c25ea310afad4d50e62314a031

Download Submit
/tmp/notify.file

Filesize
37B

MD5
019ad3f4fc7664d362fa31568939c770

SHA1
b57da45bd7259ce9122a0ec032672a50a16671b7

SHA256
1104fe0f9a5399a4097c54dd8331c747acf2e1d0c9992ed4f5f72bb2828b8097

SHA512
c5a017c7c637282bb7120d27d36ca7051a75bf1cbb90fedcf7c2824aa17ade47fb8c41cc82add915f0912670260da5719255c8c5ac7927a7e14f5755c4ba04b0

Download Submit
/usr/bin/acpid

Filesize
980KB

MD5
2f25fe87948c926d03cd5c61b506594a

SHA1
caf5164de035cfd8e5d3cc75faae9379d36f4f66

SHA256
1f8138ff3a472db111df5ffd5ab2cfc72f50ee46d4d3c266ff74c10464e1469d

SHA512
0265759b7e78225ae11c92f5a0b3a7c8399ab02f310277c51dfe0bf76367e7e0d15ca0efa368ed3cc9cf1e464f68a9a1922e97efb7832c5e0cc362aeacd1c96f

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

Filesize
1.1MB

MD5
0ab61a2da442f3f3c44e18e8e4e57892

SHA1
99a1baef2afd91cb86aac6758a7f4ff86981c6b0

SHA256
c90fef14d8b59c7c037acbcd310a0985f6053ebbefbd8e1f3b6f873c62fe1a8c

SHA512
c69d516d8952de63901d730183c8e5df5980495a525d8b75bf846908b722aae6a5948094743aaafd83af454ec26b7d1ad0e9dc61099a9766e8d15ab57bc8e141

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

Filesize
69B

MD5
8da9fee66d571a37870cf489d1973308

SHA1
006defd174770a6e36b9bdfc8fbd8f1f2790216f

SHA256
88ddbb4ac5da133eff643916351b78159d835f5cb162cba4d2b8bf5e149c7543

SHA512
a9fadf079512504d88fb653b0e2d23d6eb4e0bc0e97fc7d85d165ab5f188620f62826d7039af1b2db8853dfc099a5bf07f6fd97caa28aea8dbb54281c716f705

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

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads