Malware Analysis Report

2024-11-15 05:01

Sample ID 240530-nms5tafg3y
Target 3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd
SHA256 3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd
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

3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd

Threat Level: Known bad

The file 3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd was found to be: Known bad.

Malicious Activity Summary

socks5systemz botnet discovery

Socks5Systemz

Detect Socks5Systemz Payload

Executes dropped EXE

Loads dropped DLL

Unexpected DNS network traffic destination

Checks installed software on the system

Unsigned PE

Enumerates physical storage devices

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-30 11:31

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-30 11:31

Reported

2024-05-30 11:33

Platform

win10v2004-20240508-en

Max time kernel

143s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.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 141.98.234.31 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-0ILJO.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4656 wrote to memory of 4432 N/A C:\Users\Admin\AppData\Local\Temp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.exe C:\Users\Admin\AppData\Local\Temp\is-0ILJO.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp
PID 4656 wrote to memory of 4432 N/A C:\Users\Admin\AppData\Local\Temp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.exe C:\Users\Admin\AppData\Local\Temp\is-0ILJO.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp
PID 4656 wrote to memory of 4432 N/A C:\Users\Admin\AppData\Local\Temp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.exe C:\Users\Admin\AppData\Local\Temp\is-0ILJO.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp
PID 4432 wrote to memory of 1236 N/A C:\Users\Admin\AppData\Local\Temp\is-0ILJO.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer.exe
PID 4432 wrote to memory of 1236 N/A C:\Users\Admin\AppData\Local\Temp\is-0ILJO.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer.exe
PID 4432 wrote to memory of 1236 N/A C:\Users\Admin\AppData\Local\Temp\is-0ILJO.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer.exe
PID 4432 wrote to memory of 3652 N/A C:\Users\Admin\AppData\Local\Temp\is-0ILJO.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer.exe
PID 4432 wrote to memory of 3652 N/A C:\Users\Admin\AppData\Local\Temp\is-0ILJO.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer.exe
PID 4432 wrote to memory of 3652 N/A C:\Users\Admin\AppData\Local\Temp\is-0ILJO.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.exe

"C:\Users\Admin\AppData\Local\Temp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.exe"

C:\Users\Admin\AppData\Local\Temp\is-0ILJO.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp

"C:\Users\Admin\AppData\Local\Temp\is-0ILJO.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp" /SL5="$A01D0,4739961,54272,C:\Users\Admin\AppData\Local\Temp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.exe"

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

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

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
BE 2.17.107.112:443 www.bing.com tcp
US 8.8.8.8:53 112.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 35.15.31.184.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
HK 141.98.234.31:53 dtoufjq.info udp
BG 79.110.49.184:80 dtoufjq.info tcp
NL 79.132.128.125:2023 tcp
US 8.8.8.8:53 31.234.98.141.in-addr.arpa udp
US 8.8.8.8:53 184.49.110.79.in-addr.arpa udp
US 8.8.8.8:53 125.128.132.79.in-addr.arpa udp

Files

memory/4656-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4656-3-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-0ILJO.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp

MD5 2147d68d1e5f1da63ca70612f4181ce6
SHA1 517ecefc93c258b1bc05ee5433e3a328a6f9168a
SHA256 3ba1867d2ba6b3db3c6c4c5fa238246fd4351f337c4e167e97eb25e2a5f0b181
SHA512 bc4a5e0a2e83e39005b6e3d470681741435a7b06f182162c3a72a96b0f763cb5a80eaad7e936216ac21c00d00b07e429149f0d4e1869868b6e469b1427ed8188

memory/4432-16-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-CHU6P.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

MD5 1faa384f13689b6fdebba8b00028e9cf
SHA1 4aea8811b1e3fa6b2384db40254718ff859cf1e7
SHA256 a182532a8b163d3633745eb9ac2a721a38650bea77a00c56703cee8bb76a8ff4
SHA512 35819ccdf434ef123a0c12bbb22cba88a1d9a47bc8124fff790a8cc66abbbfe1f1b08e0d1f12afbfa5f44b68f5e079d50a05ef7fe54fe81629efadf210300f6f

memory/1236-59-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/1236-65-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/3652-68-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/1236-63-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/1236-60-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/4656-69-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4432-70-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/3652-71-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/3652-74-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/3652-77-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/3652-80-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/3652-83-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/3652-87-0x0000000000930000-0x00000000009D2000-memory.dmp

memory/3652-88-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/3652-94-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/3652-97-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/3652-98-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/3652-101-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/3652-104-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/3652-107-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/3652-110-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/3652-112-0x0000000000930000-0x00000000009D2000-memory.dmp

memory/3652-111-0x0000000000930000-0x00000000009D2000-memory.dmp

memory/3652-116-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/3652-119-0x0000000000400000-0x00000000006FE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-30 11:31

Reported

2024-05-30 11:33

Platform

win11-20240426-en

Max time kernel

146s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.exe"

Signatures

Detect Socks5Systemz Payload

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

Socks5Systemz

botnet socks5systemz

Unexpected DNS network traffic destination

Description Indicator Process Target
Destination IP 141.98.234.31 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-S7IBI.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3372 wrote to memory of 3704 N/A C:\Users\Admin\AppData\Local\Temp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.exe C:\Users\Admin\AppData\Local\Temp\is-S7IBI.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp
PID 3372 wrote to memory of 3704 N/A C:\Users\Admin\AppData\Local\Temp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.exe C:\Users\Admin\AppData\Local\Temp\is-S7IBI.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp
PID 3372 wrote to memory of 3704 N/A C:\Users\Admin\AppData\Local\Temp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.exe C:\Users\Admin\AppData\Local\Temp\is-S7IBI.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp
PID 3704 wrote to memory of 3544 N/A C:\Users\Admin\AppData\Local\Temp\is-S7IBI.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer.exe
PID 3704 wrote to memory of 3544 N/A C:\Users\Admin\AppData\Local\Temp\is-S7IBI.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer.exe
PID 3704 wrote to memory of 3544 N/A C:\Users\Admin\AppData\Local\Temp\is-S7IBI.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer.exe
PID 3704 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\is-S7IBI.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer.exe
PID 3704 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\is-S7IBI.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer.exe
PID 3704 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\is-S7IBI.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.exe

"C:\Users\Admin\AppData\Local\Temp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.exe"

C:\Users\Admin\AppData\Local\Temp\is-S7IBI.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp

"C:\Users\Admin\AppData\Local\Temp\is-S7IBI.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp" /SL5="$C005E,4739961,54272,C:\Users\Admin\AppData\Local\Temp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.exe"

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

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

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

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

Network

Country Destination Domain Proto
HK 141.98.234.31:53 bmsdlbm.com udp
BG 79.110.49.184:80 bmsdlbm.com tcp
US 8.8.8.8:53 184.49.110.79.in-addr.arpa udp

Files

memory/3372-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3372-2-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-S7IBI.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp

MD5 2147d68d1e5f1da63ca70612f4181ce6
SHA1 517ecefc93c258b1bc05ee5433e3a328a6f9168a
SHA256 3ba1867d2ba6b3db3c6c4c5fa238246fd4351f337c4e167e97eb25e2a5f0b181
SHA512 bc4a5e0a2e83e39005b6e3d470681741435a7b06f182162c3a72a96b0f763cb5a80eaad7e936216ac21c00d00b07e429149f0d4e1869868b6e469b1427ed8188

memory/3704-16-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-PO6IV.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

MD5 1faa384f13689b6fdebba8b00028e9cf
SHA1 4aea8811b1e3fa6b2384db40254718ff859cf1e7
SHA256 a182532a8b163d3633745eb9ac2a721a38650bea77a00c56703cee8bb76a8ff4
SHA512 35819ccdf434ef123a0c12bbb22cba88a1d9a47bc8124fff790a8cc66abbbfe1f1b08e0d1f12afbfa5f44b68f5e079d50a05ef7fe54fe81629efadf210300f6f

memory/3544-63-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/3544-65-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/3544-59-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/2784-67-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/3544-60-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/2784-69-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/3372-70-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3704-71-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2784-72-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/2784-75-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/2784-76-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/2784-79-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/2784-82-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/2784-85-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/2784-91-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/2784-88-0x00000000009E0000-0x0000000000A82000-memory.dmp

memory/2784-96-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/2784-99-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/2784-102-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/2784-105-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/2784-108-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/2784-111-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/2784-115-0x0000000000400000-0x00000000006FE000-memory.dmp

memory/2784-118-0x0000000000400000-0x00000000006FE000-memory.dmp