Malware Analysis Report

2025-08-05 23:58

Sample ID 240324-stjbeagb81
Target b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935
SHA256 b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935
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

b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935

Threat Level: Known bad

The file b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935 was found to be: Known bad.

Malicious Activity Summary

socks5systemz botnet discovery

Socks5Systemz

Detect Socks5Systemz Payload

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 WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-24 15:24

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-24 15:24

Reported

2024-03-24 15:27

Platform

win10v2004-20231215-en

Max time kernel

141s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.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
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 WriteProcessMemory

Description Indicator Process Target
PID 4804 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.exe C:\Users\Admin\AppData\Local\Temp\is-ABBQF.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp
PID 4804 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.exe C:\Users\Admin\AppData\Local\Temp\is-ABBQF.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp
PID 4804 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.exe C:\Users\Admin\AppData\Local\Temp\is-ABBQF.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp
PID 2252 wrote to memory of 4440 N/A C:\Users\Admin\AppData\Local\Temp\is-ABBQF.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 2252 wrote to memory of 4440 N/A C:\Users\Admin\AppData\Local\Temp\is-ABBQF.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 2252 wrote to memory of 4440 N/A C:\Users\Admin\AppData\Local\Temp\is-ABBQF.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 2252 wrote to memory of 3556 N/A C:\Users\Admin\AppData\Local\Temp\is-ABBQF.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 2252 wrote to memory of 3556 N/A C:\Users\Admin\AppData\Local\Temp\is-ABBQF.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 2252 wrote to memory of 3556 N/A C:\Users\Admin\AppData\Local\Temp\is-ABBQF.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.exe

"C:\Users\Admin\AppData\Local\Temp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.exe"

C:\Users\Admin\AppData\Local\Temp\is-ABBQF.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp

"C:\Users\Admin\AppData\Local\Temp\is-ABBQF.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp" /SL5="$501F0,1783347,54272,C:\Users\Admin\AppData\Local\Temp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.exe"

C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

"C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe" -i

C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

"C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe" -s

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 68.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 53.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 54.179.17.96.in-addr.arpa udp
RU 152.89.198.214:53 diezfcn.info udp
MD 45.142.214.240:80 diezfcn.info tcp
US 8.8.8.8:53 214.198.89.152.in-addr.arpa udp
NL 89.105.201.183:2023 tcp
US 8.8.8.8:53 183.201.105.89.in-addr.arpa udp
US 8.8.8.8:53 240.214.142.45.in-addr.arpa udp

Files

memory/4804-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4804-2-0x0000000000400000-0x0000000000414000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-ABBQF.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp

MD5 5a1e3d46cb5a24f8e50b2a59d2ba1cf3
SHA1 fe86894c4757c144449bc744649b7fb9e03346f1
SHA256 d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d
SHA512 a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

memory/2252-7-0x0000000000680000-0x0000000000681000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-M23TD.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

MD5 451dcf0ec2e3f43096883f662fa92b86
SHA1 149723d39f6e3fa23adea52420f415d1b7725e8f
SHA256 d9bcebd225e9abe2cf9eaa0479997e756eeab2b607cc14be27e562e08887b021
SHA512 a6f0d7e342b78f2025c859fb9d0e0e0887edcb6f8d086c8206b8974f91a5374cc3045dfb9876e4c4fcf64da75d37fd6b822318caf4f9ecb7d15f391f6c973c87

memory/4440-38-0x0000000000400000-0x0000000000601000-memory.dmp

memory/4440-39-0x0000000000400000-0x0000000000601000-memory.dmp

memory/4440-42-0x0000000000400000-0x0000000000601000-memory.dmp

memory/4440-43-0x0000000000400000-0x0000000000601000-memory.dmp

C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

MD5 8d273d5a5022f2973d52f8f73ca46e03
SHA1 44e5a8d7519c176031803a93e9a0c73507bcf681
SHA256 c98c8d4339e25b014dcef1707d7c7ef4451ad6c4747ea195c793f7f58daa1b11
SHA512 bf317cceaaef59904309fd92a8221236ba250461739d844d562e9f484595ab3070593ef9e2dacc06db566cefbca7bc7c78c0c9a244fcffefb9c56cd527b4d4de

memory/3556-46-0x0000000000400000-0x0000000000601000-memory.dmp

memory/3556-47-0x0000000000400000-0x0000000000601000-memory.dmp

memory/4804-48-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2252-49-0x0000000000400000-0x00000000004B8000-memory.dmp

memory/3556-50-0x0000000000400000-0x0000000000601000-memory.dmp

memory/2252-51-0x0000000000680000-0x0000000000681000-memory.dmp

memory/3556-54-0x0000000000400000-0x0000000000601000-memory.dmp

memory/3556-55-0x0000000000400000-0x0000000000601000-memory.dmp

memory/3556-58-0x0000000000400000-0x0000000000601000-memory.dmp

memory/3556-61-0x0000000000400000-0x0000000000601000-memory.dmp

memory/3556-64-0x0000000000400000-0x0000000000601000-memory.dmp

memory/3556-67-0x0000000000800000-0x00000000008A2000-memory.dmp

memory/3556-68-0x0000000000400000-0x0000000000601000-memory.dmp

memory/3556-70-0x0000000000800000-0x00000000008A2000-memory.dmp

memory/3556-75-0x0000000000400000-0x0000000000601000-memory.dmp

memory/3556-78-0x0000000000400000-0x0000000000601000-memory.dmp

memory/3556-79-0x0000000000800000-0x00000000008A2000-memory.dmp

memory/3556-82-0x0000000000400000-0x0000000000601000-memory.dmp

memory/3556-85-0x0000000000400000-0x0000000000601000-memory.dmp

memory/3556-88-0x0000000000400000-0x0000000000601000-memory.dmp

memory/3556-91-0x0000000000400000-0x0000000000601000-memory.dmp

memory/3556-92-0x0000000000800000-0x00000000008A2000-memory.dmp

memory/3556-93-0x0000000000800000-0x00000000008A2000-memory.dmp

memory/3556-97-0x0000000000400000-0x0000000000601000-memory.dmp

memory/3556-100-0x0000000000400000-0x0000000000601000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-24 15:24

Reported

2024-03-24 15:27

Platform

win11-20240319-en

Max time kernel

145s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.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

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 WriteProcessMemory

Description Indicator Process Target
PID 2836 wrote to memory of 5104 N/A C:\Users\Admin\AppData\Local\Temp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.exe C:\Users\Admin\AppData\Local\Temp\is-VHI0D.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp
PID 2836 wrote to memory of 5104 N/A C:\Users\Admin\AppData\Local\Temp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.exe C:\Users\Admin\AppData\Local\Temp\is-VHI0D.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp
PID 2836 wrote to memory of 5104 N/A C:\Users\Admin\AppData\Local\Temp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.exe C:\Users\Admin\AppData\Local\Temp\is-VHI0D.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp
PID 5104 wrote to memory of 5804 N/A C:\Users\Admin\AppData\Local\Temp\is-VHI0D.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 5104 wrote to memory of 5804 N/A C:\Users\Admin\AppData\Local\Temp\is-VHI0D.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 5104 wrote to memory of 5804 N/A C:\Users\Admin\AppData\Local\Temp\is-VHI0D.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 5104 wrote to memory of 580 N/A C:\Users\Admin\AppData\Local\Temp\is-VHI0D.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 5104 wrote to memory of 580 N/A C:\Users\Admin\AppData\Local\Temp\is-VHI0D.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 5104 wrote to memory of 580 N/A C:\Users\Admin\AppData\Local\Temp\is-VHI0D.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.exe

"C:\Users\Admin\AppData\Local\Temp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.exe"

C:\Users\Admin\AppData\Local\Temp\is-VHI0D.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp

"C:\Users\Admin\AppData\Local\Temp\is-VHI0D.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp" /SL5="$800DA,1783347,54272,C:\Users\Admin\AppData\Local\Temp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.exe"

C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

"C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe" -i

C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

"C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe" -s

Network

Country Destination Domain Proto
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
RU 152.89.198.214:53 ayzahmh.ru udp
MD 45.142.214.240:80 ayzahmh.ru tcp

Files

memory/2836-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2836-2-0x0000000000400000-0x0000000000414000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-VHI0D.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp

MD5 5a1e3d46cb5a24f8e50b2a59d2ba1cf3
SHA1 fe86894c4757c144449bc744649b7fb9e03346f1
SHA256 d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d
SHA512 a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

memory/5104-7-0x0000000002340000-0x0000000002341000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-4COPS.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

MD5 451dcf0ec2e3f43096883f662fa92b86
SHA1 149723d39f6e3fa23adea52420f415d1b7725e8f
SHA256 d9bcebd225e9abe2cf9eaa0479997e756eeab2b607cc14be27e562e08887b021
SHA512 a6f0d7e342b78f2025c859fb9d0e0e0887edcb6f8d086c8206b8974f91a5374cc3045dfb9876e4c4fcf64da75d37fd6b822318caf4f9ecb7d15f391f6c973c87

memory/5804-38-0x0000000000400000-0x0000000000601000-memory.dmp

memory/5804-39-0x0000000000400000-0x0000000000601000-memory.dmp

memory/5804-42-0x0000000000400000-0x0000000000601000-memory.dmp

memory/5804-43-0x0000000000400000-0x0000000000601000-memory.dmp

memory/580-45-0x0000000000400000-0x0000000000601000-memory.dmp

memory/580-47-0x0000000000400000-0x0000000000601000-memory.dmp

memory/2836-48-0x0000000000400000-0x0000000000414000-memory.dmp

memory/5104-49-0x0000000000400000-0x00000000004B8000-memory.dmp

memory/580-50-0x0000000000400000-0x0000000000601000-memory.dmp

memory/5104-51-0x0000000002340000-0x0000000002341000-memory.dmp

memory/580-54-0x0000000000400000-0x0000000000601000-memory.dmp

memory/580-55-0x0000000000400000-0x0000000000601000-memory.dmp

memory/580-58-0x0000000000400000-0x0000000000601000-memory.dmp

memory/580-61-0x0000000000400000-0x0000000000601000-memory.dmp

memory/580-64-0x0000000000400000-0x0000000000601000-memory.dmp

memory/580-68-0x0000000002330000-0x00000000023D2000-memory.dmp

memory/580-67-0x0000000000400000-0x0000000000601000-memory.dmp

memory/580-74-0x0000000000400000-0x0000000000601000-memory.dmp

memory/580-77-0x0000000000400000-0x0000000000601000-memory.dmp

memory/580-78-0x0000000002330000-0x00000000023D2000-memory.dmp

memory/580-81-0x0000000000400000-0x0000000000601000-memory.dmp

memory/580-84-0x0000000000400000-0x0000000000601000-memory.dmp

memory/580-87-0x0000000000400000-0x0000000000601000-memory.dmp

memory/580-90-0x0000000000400000-0x0000000000601000-memory.dmp

memory/580-94-0x0000000000400000-0x0000000000601000-memory.dmp

memory/580-97-0x0000000000400000-0x0000000000601000-memory.dmp