Malware Analysis Report

2024-11-15 05:01

Sample ID 240530-rbfl5aah9w
Target 41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2
SHA256 41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2
Tags
socks5systemz botnet discovery
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2

Threat Level: Known bad

The file 41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2 was found to be: Known bad.

Malicious Activity Summary

socks5systemz botnet discovery

Detect Socks5Systemz Payload

Socks5Systemz

Executes dropped EXE

Unexpected DNS network traffic destination

Loads dropped DLL

Checks installed software on the system

Enumerates physical storage devices

Unsigned PE

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-30 14:00

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-30 14:00

Reported

2024-05-30 14:03

Platform

win10v2004-20240426-en

Max time kernel

141s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.exe"

Signatures

Detect Socks5Systemz Payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Socks5Systemz

botnet socks5systemz

Unexpected DNS network traffic destination

Description Indicator Process Target
Destination IP 152.89.198.214 N/A N/A

Checks installed software on the system

discovery

Enumerates physical storage devices

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-RM9DE.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 5024 wrote to memory of 892 N/A C:\Users\Admin\AppData\Local\Temp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.exe C:\Users\Admin\AppData\Local\Temp\is-RM9DE.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp
PID 5024 wrote to memory of 892 N/A C:\Users\Admin\AppData\Local\Temp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.exe C:\Users\Admin\AppData\Local\Temp\is-RM9DE.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp
PID 5024 wrote to memory of 892 N/A C:\Users\Admin\AppData\Local\Temp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.exe C:\Users\Admin\AppData\Local\Temp\is-RM9DE.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp
PID 892 wrote to memory of 840 N/A C:\Users\Admin\AppData\Local\Temp\is-RM9DE.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 892 wrote to memory of 840 N/A C:\Users\Admin\AppData\Local\Temp\is-RM9DE.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 892 wrote to memory of 840 N/A C:\Users\Admin\AppData\Local\Temp\is-RM9DE.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 892 wrote to memory of 1644 N/A C:\Users\Admin\AppData\Local\Temp\is-RM9DE.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 892 wrote to memory of 1644 N/A C:\Users\Admin\AppData\Local\Temp\is-RM9DE.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 892 wrote to memory of 1644 N/A C:\Users\Admin\AppData\Local\Temp\is-RM9DE.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.exe

"C:\Users\Admin\AppData\Local\Temp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.exe"

C:\Users\Admin\AppData\Local\Temp\is-RM9DE.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp

"C:\Users\Admin\AppData\Local\Temp\is-RM9DE.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp" /SL5="$80090,4732976,54272,C:\Users\Admin\AppData\Local\Temp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.exe"

C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

"C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -i

C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

"C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -s

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
RU 152.89.198.214:53 ejiikxo.ua udp
BG 79.110.49.184:80 ejiikxo.ua tcp
FR 195.154.173.35:2023 tcp
US 8.8.8.8:53 214.198.89.152.in-addr.arpa udp
US 8.8.8.8:53 184.49.110.79.in-addr.arpa udp
US 8.8.8.8:53 35.173.154.195.in-addr.arpa udp

Files

memory/5024-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/5024-2-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-RM9DE.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp

MD5 35dc5f441f5af688cd72c6e0b8dc86dc
SHA1 328afce7e8d428b4c0769b722ebf6f7ada656751
SHA256 d54b98ace62fc4252c1b7f4a06166cbaa1f246183fb9ea36034b34c9bcd2dddc
SHA512 52d5291fdee71e36c724afdc6dfcf86ee17957e52cccbdb663285b5b2f4bfd9b8597e2cedf48f7faf0f17255c6544ae287e0d90c062f76451bc5fe994b39dcc4

memory/892-13-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-OF9SL.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

MD5 9e5304485c9d6c03b9c4cc80a20b4f8f
SHA1 388c7dbc278211f9da02c5712eaa89f8527bc062
SHA256 ebf7209dc5f4d4e63e3a26c0cff178b9a66a19097bedbfe0fb535660c8d67eb0
SHA512 3b14b9c25808a9da1efde6368406f04c166c86b44cf55358fb87ca4fabc88748c9c3a2d2803f7017196d8439811b69a99ca678b46c1d4300a3e17a19f3e71517

memory/840-59-0x0000000000400000-0x0000000000745000-memory.dmp

memory/840-61-0x0000000000400000-0x0000000000745000-memory.dmp

memory/840-60-0x0000000000400000-0x0000000000745000-memory.dmp

memory/840-64-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1644-68-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1644-67-0x0000000000400000-0x0000000000745000-memory.dmp

memory/5024-69-0x0000000000400000-0x0000000000414000-memory.dmp

memory/892-70-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/1644-71-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1644-74-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1644-77-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1644-80-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1644-83-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1644-87-0x00000000009D0000-0x0000000000A72000-memory.dmp

memory/1644-88-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1644-94-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1644-97-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1644-100-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1644-103-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1644-106-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1644-109-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1644-111-0x00000000009D0000-0x0000000000A72000-memory.dmp

memory/1644-110-0x00000000009D0000-0x0000000000A72000-memory.dmp

memory/1644-115-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1644-118-0x0000000000400000-0x0000000000745000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-30 14:00

Reported

2024-05-30 14:03

Platform

win11-20240426-en

Max time kernel

141s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.exe"

Signatures

Detect Socks5Systemz Payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Socks5Systemz

botnet socks5systemz

Unexpected DNS network traffic destination

Description Indicator Process Target
Destination IP 152.89.198.214 N/A N/A

Checks installed software on the system

discovery

Enumerates physical storage devices

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-T9P5Q.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 448 wrote to memory of 3000 N/A C:\Users\Admin\AppData\Local\Temp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.exe C:\Users\Admin\AppData\Local\Temp\is-T9P5Q.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp
PID 448 wrote to memory of 3000 N/A C:\Users\Admin\AppData\Local\Temp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.exe C:\Users\Admin\AppData\Local\Temp\is-T9P5Q.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp
PID 448 wrote to memory of 3000 N/A C:\Users\Admin\AppData\Local\Temp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.exe C:\Users\Admin\AppData\Local\Temp\is-T9P5Q.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp
PID 3000 wrote to memory of 2924 N/A C:\Users\Admin\AppData\Local\Temp\is-T9P5Q.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 3000 wrote to memory of 2924 N/A C:\Users\Admin\AppData\Local\Temp\is-T9P5Q.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 3000 wrote to memory of 2924 N/A C:\Users\Admin\AppData\Local\Temp\is-T9P5Q.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 3000 wrote to memory of 2748 N/A C:\Users\Admin\AppData\Local\Temp\is-T9P5Q.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 3000 wrote to memory of 2748 N/A C:\Users\Admin\AppData\Local\Temp\is-T9P5Q.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 3000 wrote to memory of 2748 N/A C:\Users\Admin\AppData\Local\Temp\is-T9P5Q.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.exe

"C:\Users\Admin\AppData\Local\Temp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.exe"

C:\Users\Admin\AppData\Local\Temp\is-T9P5Q.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp

"C:\Users\Admin\AppData\Local\Temp\is-T9P5Q.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp" /SL5="$5006C,4732976,54272,C:\Users\Admin\AppData\Local\Temp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.exe"

C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

"C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -i

C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

"C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -s

Network

Country Destination Domain Proto
RU 152.89.198.214:53 csdouuq.net udp
BG 79.110.49.184:80 csdouuq.net tcp
CH 176.10.111.158:2023 tcp
US 8.8.8.8:53 158.111.10.176.in-addr.arpa udp

Files

memory/448-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/448-2-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-T9P5Q.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp

MD5 35dc5f441f5af688cd72c6e0b8dc86dc
SHA1 328afce7e8d428b4c0769b722ebf6f7ada656751
SHA256 d54b98ace62fc4252c1b7f4a06166cbaa1f246183fb9ea36034b34c9bcd2dddc
SHA512 52d5291fdee71e36c724afdc6dfcf86ee17957e52cccbdb663285b5b2f4bfd9b8597e2cedf48f7faf0f17255c6544ae287e0d90c062f76451bc5fe994b39dcc4

memory/3000-13-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-MPSC7.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

MD5 9e5304485c9d6c03b9c4cc80a20b4f8f
SHA1 388c7dbc278211f9da02c5712eaa89f8527bc062
SHA256 ebf7209dc5f4d4e63e3a26c0cff178b9a66a19097bedbfe0fb535660c8d67eb0
SHA512 3b14b9c25808a9da1efde6368406f04c166c86b44cf55358fb87ca4fabc88748c9c3a2d2803f7017196d8439811b69a99ca678b46c1d4300a3e17a19f3e71517

memory/2924-62-0x0000000000400000-0x0000000000745000-memory.dmp

memory/2924-63-0x0000000000400000-0x0000000000745000-memory.dmp

memory/2924-59-0x0000000000400000-0x0000000000745000-memory.dmp

memory/2748-67-0x0000000000400000-0x0000000000745000-memory.dmp

memory/2748-68-0x0000000000400000-0x0000000000745000-memory.dmp

memory/448-69-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3000-70-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2748-71-0x0000000000400000-0x0000000000745000-memory.dmp

memory/2748-73-0x0000000000400000-0x0000000000745000-memory.dmp

memory/2748-75-0x0000000000400000-0x0000000000745000-memory.dmp

memory/2748-78-0x0000000000400000-0x0000000000745000-memory.dmp

memory/2748-81-0x0000000000400000-0x0000000000745000-memory.dmp

memory/2748-84-0x0000000000400000-0x0000000000745000-memory.dmp

memory/2748-85-0x0000000000A30000-0x0000000000AD2000-memory.dmp

memory/2748-89-0x0000000000400000-0x0000000000745000-memory.dmp

memory/2748-95-0x0000000000400000-0x0000000000745000-memory.dmp

memory/2748-98-0x0000000000400000-0x0000000000745000-memory.dmp

memory/2748-101-0x0000000000400000-0x0000000000745000-memory.dmp

memory/2748-104-0x0000000000400000-0x0000000000745000-memory.dmp

memory/2748-107-0x0000000000400000-0x0000000000745000-memory.dmp

memory/2748-110-0x0000000000400000-0x0000000000745000-memory.dmp

memory/2748-112-0x0000000000A30000-0x0000000000AD2000-memory.dmp

memory/2748-111-0x0000000000A30000-0x0000000000AD2000-memory.dmp

memory/2748-116-0x0000000000400000-0x0000000000745000-memory.dmp

memory/2748-119-0x0000000000400000-0x0000000000745000-memory.dmp