mrblack | b9d1294e0dbaf0a397f18b28a09ade1e16e934d979fc0f0cabddb37fc25f219a

Analysis

max time kernel
151s
max time network
149s
platform
ubuntu-18.04_amd64
resource
ubuntu1804-amd64-20231222-en
resource tags

arch:amd64arch:i386image:ubuntu1804-amd64-20231222-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
submitted
22-12-2023 16:24

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

edd3f0a68945ff1f8dd6df454d837e2b
Size

1.2MB
MD5

edd3f0a68945ff1f8dd6df454d837e2b
SHA1

2b1f756d1f5b1723df6872d5727bf55f94c7aba9
SHA256

b9d1294e0dbaf0a397f18b28a09ade1e16e934d979fc0f0cabddb37fc25f219a
SHA512

f7d234d9494272e003cb986c30b2a96184a73c1f4c969738ddd635e1cc25d30b8ce39e6a465a9e23eeba82285f163f76eb68045780a646a3ae2112d074846bb6
SSDEEP

24576:e845rlHu6gVJKG75oFpA0VWfX4G2y1q2rJp0:745wRVJKGtSA0VWfoVu9p0

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/getty	1628	getty
/etc/.ssh	1648	.ssh

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/DbSecuritySpt
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/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/conf.n	Process not Found
File opened for modification	/usr/bin/bsd-port/getty.lock	Process not Found
File opened for modification	/usr/bin/bsd-port/udevd.lock	Process not Found
File opened for modification	/usr/bin/bsd-port/getty	cp
File opened for modification	/usr/bin/dpkgd/ps	cp

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

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 23 IoCs

Reads data from /proc virtual filesystem.

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

Writes file to tmp directory 5 IoCs

Malware often drops required files in the /tmp directory.

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

/tmp/edd3f0a68945ff1f8dd6df454d837e2b
/tmp/edd3f0a68945ff1f8dd6df454d837e2b
1⤵
PID:1587

/bin/sh
sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt"
1⤵
PID:1610
- /bin/ln
  ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt
  2⤵
  PID:1611

/bin/sh
sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt"
1⤵
PID:1612
- /bin/ln
  ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt
  2⤵
  PID:1613

/bin/sh
sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt"
1⤵
PID:1614
- /bin/ln
  ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt
  2⤵
  PID:1615

/bin/sh
sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt"
1⤵
PID:1616
- /bin/ln
  ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt
  2⤵
  PID:1617

/bin/sh
sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt"
1⤵
PID:1618
- /bin/ln
  ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt
  2⤵
  PID:1619

/bin/sh
sh -c "mkdir -p /usr/bin/bsd-port"
1⤵
PID:1620
- /bin/mkdir
  mkdir -p /usr/bin/bsd-port
  2⤵
  - Reads runtime system information
  PID:1621

/bin/sh
sh -c "mkdir -p /usr/bin/bsd-port"
1⤵
PID:1622
- /bin/mkdir
  mkdir -p /usr/bin/bsd-port
  2⤵
  - Reads runtime system information
  PID:1623

/bin/sh
sh -c "cp -f /tmp/edd3f0a68945ff1f8dd6df454d837e2b /usr/bin/bsd-port/getty"
1⤵
PID:1624
- /bin/cp
  cp -f /tmp/edd3f0a68945ff1f8dd6df454d837e2b /usr/bin/bsd-port/getty
  2⤵
  - Write file to user bin folder
  - Reads runtime system information
  PID:1625

/bin/sh
sh -c /usr/bin/bsd-port/getty
1⤵
PID:1627
- /usr/bin/bsd-port/getty
  /usr/bin/bsd-port/getty
  2⤵
  - Executes dropped EXE
  PID:1628

/bin/sh
sh -c "mkdir -p /etc"
1⤵
PID:1630
- /bin/mkdir
  mkdir -p /etc
  2⤵
  - Reads runtime system information
  PID:1631

/bin/sh
sh -c "mkdir -p /etc"
1⤵
PID:1632
- /bin/mkdir
  mkdir -p /etc
  2⤵
  - Reads runtime system information
  PID:1633

/bin/sh
sh -c "cp -f /tmp/edd3f0a68945ff1f8dd6df454d837e2b /etc/.ssh"
1⤵
PID:1634
- /bin/cp
  cp -f /tmp/edd3f0a68945ff1f8dd6df454d837e2b /etc/.ssh
  2⤵
  - Reads runtime system information
  PID:1635

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"
1⤵
PID:1636
- /bin/ln
  ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
  2⤵
  PID:1637

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"
1⤵
PID:1638
- /bin/ln
  ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
  2⤵
  PID:1639

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"
1⤵
PID:1640
- /bin/ln
  ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
  2⤵
  PID:1641

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"
1⤵
PID:1642
- /bin/ln
  ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
  2⤵
  PID:1643

/bin/sh
sh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"
1⤵
PID:1644
- /bin/ln
  ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
  2⤵
  PID:1647

/bin/sh
sh -c /etc/.ssh
1⤵
PID:1646
- /etc/.ssh
  /etc/.ssh
  2⤵
  - Executes dropped EXE
  PID:1648

/bin/sh
sh -c "mkdir -p /usr/bin/dpkgd"
1⤵
PID:1649
- /bin/mkdir
  mkdir -p /usr/bin/dpkgd
  2⤵
  - Reads runtime system information
  PID:1650

/bin/sh
sh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"
1⤵
PID:1651
- /bin/cp
  cp -f /bin/ps /usr/bin/dpkgd/ps
  2⤵
  - Write file to user bin folder
  - Reads runtime system information
  PID:1652

/bin/sh
sh -c "mkdir -p /bin"
1⤵
PID:1653
- /bin/mkdir
  mkdir -p /bin
  2⤵
  - Reads runtime system information
  PID:1654

/bin/sh
sh -c "mkdir -p /bin"
1⤵
PID:1655
- /bin/mkdir
  mkdir -p /bin
  2⤵
  - Reads runtime system information
  PID:1656

/bin/sh
sh -c "cp -f /usr/bin/bsd-port/getty /bin/ps"
1⤵
PID:1657
- /bin/cp
  cp -f /usr/bin/bsd-port/getty /bin/ps
  2⤵
  - Writes file to system bin folder
  - Reads runtime system information
  PID:1658

/bin/sh
sh -c "chmod 0755 /bin/ps"
1⤵
PID:1659
- /bin/chmod
  chmod 0755 /bin/ps
  2⤵
  PID:1660

/bin/sh
sh -c "cp -f /bin/ss /usr/bin/dpkgd/ss"
1⤵
PID:1661
- /bin/cp
  cp -f /bin/ss /usr/bin/dpkgd/ss
  2⤵
  - Write file to user bin folder
  - Reads runtime system information
  PID:1662

/bin/sh
sh -c "mkdir -p /bin"
1⤵
PID:1663
- /bin/mkdir
  mkdir -p /bin
  2⤵
  - Reads runtime system information
  PID:1664

/bin/sh
sh -c "mkdir -p /bin"
1⤵
PID:1665
- /bin/mkdir
  mkdir -p /bin
  2⤵
  - Reads runtime system information
  PID:1666

/bin/sh
sh -c "cp -f /usr/bin/bsd-port/getty /bin/ss"
1⤵
PID:1667
- /bin/cp
  cp -f /usr/bin/bsd-port/getty /bin/ss
  2⤵
  - Writes file to system bin folder
  - Reads runtime system information
  PID:1668

/bin/sh
sh -c "chmod 0755 /bin/ss"
1⤵
PID:1669
- /bin/chmod
  chmod 0755 /bin/ss
  2⤵
  PID:1670

/bin/sh
sh -c "cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof"
1⤵
PID:1671
- /bin/cp
  cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof
  2⤵
  - Write file to user bin folder
  - Reads runtime system information
  PID:1672

/bin/sh
sh -c "mkdir -p /usr/bin"
1⤵
PID:1673
- /bin/mkdir
  mkdir -p /usr/bin
  2⤵
  - Reads runtime system information
  PID:1674

/bin/sh
sh -c "mkdir -p /usr/bin"
1⤵
PID:1675
- /bin/mkdir
  mkdir -p /usr/bin
  2⤵
  - Reads runtime system information
  PID:1676

/bin/sh
sh -c "cp -f /usr/bin/bsd-port/getty /usr/bin/lsof"
1⤵
PID:1677
- /bin/cp
  cp -f /usr/bin/bsd-port/getty /usr/bin/lsof
  2⤵
  - Write file to user bin folder
  - Reads runtime system information
  PID:1678

/bin/sh
sh -c "chmod 0755 /usr/bin/lsof"
1⤵
PID:1679
- /bin/chmod
  chmod 0755 /usr/bin/lsof
  2⤵
  PID:1680

/bin/sh
sh -c "insmod /usr/bin/bsd-port/xpacket.ko"
1⤵
PID:1683
- /sbin/insmod
  insmod /usr/bin/bsd-port/xpacket.ko
  2⤵
  - Reads runtime system information
  PID:1684

/bin/sh
sh -c "insmod /tmp/xpacket.ko"
1⤵
PID:1689
- /sbin/insmod
  insmod /tmp/xpacket.ko
  2⤵
  - Reads runtime system information
  PID:1690

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

Loading Replay Monitor...

Downloads

/etc/.ssh

Filesize
1.1MB

MD5
515efe3161a3389b3b743f716b2bf566

SHA1
b1e95576a7664c6c7f467c62feefd45258c5f15e

SHA256
58976764fefa143d524c2ed76ae2cefce7616b9cbef297794a1a41807312f60f

SHA512
e371339c5f0ab8cd6df9ca3501cf1176df5308a6e0b24bc6c270181cb7d8e15e4461c6b5d24daea13425acafc762b2688dd53f225b85484f8067616dbcb49c31

Download Submit
/etc/init.d/DbSecuritySpt

Filesize
50B

MD5
8ece6313c62bc8e6c13384ca61983d2f

SHA1
2e0badb85360d288d5f8c039033d3802f9b8cc4d

SHA256
ef6d251703dd65574882da2e8360030a2eb2d85882746b6b5b26516d098c828a

SHA512
5bff0e3837748331090428b69e15a84b813e3b51eaf01c9f4ac930e7613257fdec917b8c182381e998a03d613acde2397c6640d9ec2c77b8c1fb59c2443d4715

Download Submit
/etc/init.d/selinux

Filesize
36B

MD5
993cc15058142d96c3daf7852c3d5ee8

SHA1
0950b8b391b04dd3895ea33cd3141543ebd2525d

SHA256
8171d077918611803d93088409f220c66fae1c670b297e1aa5d8cbd548ce9208

SHA512
0c4256c00a3710f97e92581b552682b36b62afc35fe72622c491323c618c19ea62611ac04ccafc3dfcde2254a2ebbd93b69b66795b16e36332293bed83adb928

Download Submit
/tmp/gates.lod

Filesize
4B

MD5
87ec2f451208df97228105657edb717f

SHA1
3738f2650c3885bee794953d56a1e91a5516f93f

SHA256
eb57f949956cc9f3c32eb7f249bbe56a74c253015af4dddb0c98cde49157cbd0

SHA512
ed0b97c0e93e6fea48a3038fe6a19f5083f8e81575d5e27472e7f40d9cca795ef6ab7440acedb4a7837623e9ef21f635f782067d411ee428e7690d3ffe6644ea

Download Submit
/tmp/moni.lod

Filesize
4B

MD5
f50a6c02a3fc5a3a5d4d9391f05f3efc

SHA1
0c41b5d573de54852d707569acdef231452956b1

SHA256
6debfc7d20fed1535e09e87aaead966fb3c6dd3f98122527b7165e1b90ee7d29

SHA512
4134cccd6cf2f69f34920f767f5f7b5c03a946908c0f6469a7db75243d39f0079272bdabe70e0ec1a95b85e50ca9cf1f29cc9ec40c0e2654f3e3445e435826d5

Download Submit
/tmp/notify.file

Filesize
37B

MD5
f0d8421b68abbd849531c5cfe7908c9c

SHA1
28fe56518c77b3cbfa7ed2f556c900f1199ce524

SHA256
e89abc7c57232b4167fe44e7e300efdad042f51aaf7fe75c9b524207a8d8224b

SHA512
e42e591a5dc95ccb0e4bc55dc4ffa44c9efbe09f400fd850c729017d60cd9c4b18ccd9b67410346731d41f2fb56ca2f5da78e2bcdb4cfc157ccd1e5b8b610b70

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

Filesize
73B

MD5
b8cbd4ccd8748f0a50502822eb57f466

SHA1
f13d63838aebf2c9474ed8b99b6e0b474b9b0e00

SHA256
3cf300e1f0b3d12e45bd91f73f11923044ff30f4491a6187f69a7d7b88500fa5

SHA512
2cf2785a082bcec02b11b5223baf517d01a75e4606a278863fe648de5e51fe4cb623c1a340861eeeba67ec63a4181cd66911429a498d238da77e6959ca0560f0

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

Filesize
1.2MB

MD5
edd3f0a68945ff1f8dd6df454d837e2b

SHA1
2b1f756d1f5b1723df6872d5727bf55f94c7aba9

SHA256
b9d1294e0dbaf0a397f18b28a09ade1e16e934d979fc0f0cabddb37fc25f219a

SHA512
f7d234d9494272e003cb986c30b2a96184a73c1f4c969738ddd635e1cc25d30b8ce39e6a465a9e23eeba82285f163f76eb68045780a646a3ae2112d074846bb6

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads