Malware Analysis Report

2025-08-05 23:58

Sample ID 240324-tzqs4sdg23
Target 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563
SHA256 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563
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

3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563

Threat Level: Known bad

The file 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563 was found to be: Known bad.

Malicious Activity Summary

socks5systemz botnet discovery

Detect Socks5Systemz Payload

Socks5Systemz

Loads dropped DLL

Unexpected DNS network traffic destination

Executes dropped EXE

Checks installed software on the system

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-24 16:29

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-24 16:29

Reported

2024-03-24 16:32

Platform

win10v2004-20240226-en

Max time kernel

146s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.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 WriteProcessMemory

Description Indicator Process Target
PID 4548 wrote to memory of 4628 N/A C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe C:\Users\Admin\AppData\Local\Temp\is-43DS2.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp
PID 4548 wrote to memory of 4628 N/A C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe C:\Users\Admin\AppData\Local\Temp\is-43DS2.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp
PID 4548 wrote to memory of 4628 N/A C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe C:\Users\Admin\AppData\Local\Temp\is-43DS2.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp
PID 4628 wrote to memory of 2140 N/A C:\Users\Admin\AppData\Local\Temp\is-43DS2.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 4628 wrote to memory of 2140 N/A C:\Users\Admin\AppData\Local\Temp\is-43DS2.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 4628 wrote to memory of 2140 N/A C:\Users\Admin\AppData\Local\Temp\is-43DS2.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 4628 wrote to memory of 4328 N/A C:\Users\Admin\AppData\Local\Temp\is-43DS2.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 4628 wrote to memory of 4328 N/A C:\Users\Admin\AppData\Local\Temp\is-43DS2.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 4628 wrote to memory of 4328 N/A C:\Users\Admin\AppData\Local\Temp\is-43DS2.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe

"C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe"

C:\Users\Admin\AppData\Local\Temp\is-43DS2.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp

"C:\Users\Admin\AppData\Local\Temp\is-43DS2.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp" /SL5="$A015E,1792452,54272,C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.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 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 83.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.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 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 62.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
HK 141.98.234.31:53 ezbxhre.ua udp
US 8.8.8.8:53 31.234.98.141.in-addr.arpa udp
MD 45.142.214.240:80 ezbxhre.ua tcp
US 8.8.8.8:53 240.214.142.45.in-addr.arpa udp
US 8.8.8.8:53 123.10.44.20.in-addr.arpa udp

Files

memory/4548-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4548-2-0x0000000000400000-0x0000000000414000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-43DS2.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp

MD5 5a1e3d46cb5a24f8e50b2a59d2ba1cf3
SHA1 fe86894c4757c144449bc744649b7fb9e03346f1
SHA256 d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d
SHA512 a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

memory/4628-7-0x0000000002200000-0x0000000002201000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-CJ6E8.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

MD5 e6f4e4b6fd1ecb65941b9600c5cd0bb4
SHA1 ebbee8d4bdbecd9ae3d7c6ae5f5e4cff84623f68
SHA256 2472db8242fdd5711e134b57f23ee1d5f5d888db50be8ca57bcf48e87e293f42
SHA512 c425d8fe2a260474ca156b32488915662c5d367d23e08c0053711d56b4d9dc4e7d6e81d5c4a1b3984119effbbe22095ded61fa903690be4261e5ab602df2609d

memory/2140-38-0x0000000000400000-0x0000000000614000-memory.dmp

memory/2140-39-0x0000000000400000-0x0000000000614000-memory.dmp

memory/2140-42-0x0000000000400000-0x0000000000614000-memory.dmp

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

MD5 d999ca9b198a445334f47b44c06c27e2
SHA1 5c085d8766ee88fe67c5d6d8ca8da0cec4dada52
SHA256 5e07720d7b30dd8b69b63fef9b6da4b032618611af75432880b83e4169fcc9db
SHA512 d6f46ae2e4d2bee2e1b4259b238bc301a02dfa0dc8b94750bd58a0bad859a291754278006c7a5a7f493be3fef199af189f24a825023319dadcc42b8ddda542fb

memory/2140-43-0x0000000000400000-0x0000000000614000-memory.dmp

memory/4328-45-0x0000000000400000-0x0000000000614000-memory.dmp

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

MD5 491d95bb817f8588d290bcb50dd0f0e1
SHA1 5ba366c7e1ec13f104305abd71b7c9f9d02d3cb3
SHA256 9a0af8526e70f44a0b3cf1e22cf519487cafce1d55ebd3d93203ebbb8a16229c
SHA512 a61c6c4c24e3aa12e27f747d30c760fb3e59afa88a377e26bd53f6eca2db605d705c68bb5f5dd748f24656f1dcb3e00f669811d71cd8dd4726c48a68fc8c5448

memory/4328-47-0x0000000000400000-0x0000000000614000-memory.dmp

memory/4548-48-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4628-49-0x0000000000400000-0x00000000004B8000-memory.dmp

memory/4328-50-0x0000000000400000-0x0000000000614000-memory.dmp

memory/4628-51-0x0000000002200000-0x0000000002201000-memory.dmp

memory/4328-54-0x0000000000400000-0x0000000000614000-memory.dmp

memory/4328-55-0x0000000000400000-0x0000000000614000-memory.dmp

memory/4328-58-0x0000000000400000-0x0000000000614000-memory.dmp

memory/4328-61-0x0000000000400000-0x0000000000614000-memory.dmp

memory/4328-64-0x0000000000400000-0x0000000000614000-memory.dmp

memory/4328-67-0x0000000000400000-0x0000000000614000-memory.dmp

memory/4328-68-0x0000000000760000-0x0000000000802000-memory.dmp

memory/4328-70-0x0000000000760000-0x0000000000802000-memory.dmp

memory/4328-75-0x0000000000400000-0x0000000000614000-memory.dmp

memory/4328-78-0x0000000000400000-0x0000000000614000-memory.dmp

memory/4328-79-0x0000000000760000-0x0000000000802000-memory.dmp

memory/4328-82-0x0000000000400000-0x0000000000614000-memory.dmp

memory/4328-85-0x0000000000400000-0x0000000000614000-memory.dmp

memory/4328-88-0x0000000000400000-0x0000000000614000-memory.dmp

memory/4328-91-0x0000000000400000-0x0000000000614000-memory.dmp

memory/4328-95-0x0000000000400000-0x0000000000614000-memory.dmp

memory/4328-98-0x0000000000400000-0x0000000000614000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-24 16:29

Reported

2024-03-24 16:32

Platform

win11-20240221-en

Max time kernel

144s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.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 91.211.247.248 N/A N/A

Checks installed software on the system

discovery

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4236 wrote to memory of 1412 N/A C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe C:\Users\Admin\AppData\Local\Temp\is-IH8NS.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp
PID 4236 wrote to memory of 1412 N/A C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe C:\Users\Admin\AppData\Local\Temp\is-IH8NS.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp
PID 4236 wrote to memory of 1412 N/A C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe C:\Users\Admin\AppData\Local\Temp\is-IH8NS.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp
PID 1412 wrote to memory of 416 N/A C:\Users\Admin\AppData\Local\Temp\is-IH8NS.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 1412 wrote to memory of 416 N/A C:\Users\Admin\AppData\Local\Temp\is-IH8NS.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 1412 wrote to memory of 416 N/A C:\Users\Admin\AppData\Local\Temp\is-IH8NS.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 1412 wrote to memory of 2084 N/A C:\Users\Admin\AppData\Local\Temp\is-IH8NS.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 1412 wrote to memory of 2084 N/A C:\Users\Admin\AppData\Local\Temp\is-IH8NS.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 1412 wrote to memory of 2084 N/A C:\Users\Admin\AppData\Local\Temp\is-IH8NS.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe

"C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe"

C:\Users\Admin\AppData\Local\Temp\is-IH8NS.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp

"C:\Users\Admin\AppData\Local\Temp\is-IH8NS.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp" /SL5="$A0238,1792452,54272,C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.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
LT 91.211.247.248:53 aivshli.ru udp
MD 45.142.214.240:80 aivshli.ru tcp

Files

memory/4236-0-0x0000000000400000-0x0000000000414000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-IH8NS.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp

MD5 5a1e3d46cb5a24f8e50b2a59d2ba1cf3
SHA1 fe86894c4757c144449bc744649b7fb9e03346f1
SHA256 d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d
SHA512 a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

memory/1412-6-0x0000000002340000-0x0000000002341000-memory.dmp

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

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

MD5 491d95bb817f8588d290bcb50dd0f0e1
SHA1 5ba366c7e1ec13f104305abd71b7c9f9d02d3cb3
SHA256 9a0af8526e70f44a0b3cf1e22cf519487cafce1d55ebd3d93203ebbb8a16229c
SHA512 a61c6c4c24e3aa12e27f747d30c760fb3e59afa88a377e26bd53f6eca2db605d705c68bb5f5dd748f24656f1dcb3e00f669811d71cd8dd4726c48a68fc8c5448

memory/416-37-0x0000000000400000-0x0000000000614000-memory.dmp

memory/416-38-0x0000000000400000-0x0000000000614000-memory.dmp

memory/416-42-0x0000000000400000-0x0000000000614000-memory.dmp

memory/2084-45-0x0000000000400000-0x0000000000614000-memory.dmp

memory/4236-46-0x0000000000400000-0x0000000000414000-memory.dmp

memory/1412-47-0x0000000000400000-0x00000000004B8000-memory.dmp

memory/2084-48-0x0000000000400000-0x0000000000614000-memory.dmp

memory/1412-49-0x0000000002340000-0x0000000002341000-memory.dmp

memory/2084-52-0x0000000000400000-0x0000000000614000-memory.dmp

memory/2084-53-0x0000000000400000-0x0000000000614000-memory.dmp

memory/2084-56-0x0000000000400000-0x0000000000614000-memory.dmp

memory/2084-59-0x0000000000400000-0x0000000000614000-memory.dmp

memory/2084-62-0x0000000000400000-0x0000000000614000-memory.dmp

memory/2084-65-0x0000000000400000-0x0000000000614000-memory.dmp

memory/2084-66-0x0000000000930000-0x00000000009D2000-memory.dmp

memory/2084-72-0x0000000000400000-0x0000000000614000-memory.dmp

memory/2084-75-0x0000000000400000-0x0000000000614000-memory.dmp

memory/2084-76-0x0000000000930000-0x00000000009D2000-memory.dmp

memory/2084-79-0x0000000000400000-0x0000000000614000-memory.dmp

memory/2084-82-0x0000000000400000-0x0000000000614000-memory.dmp

memory/2084-85-0x0000000000400000-0x0000000000614000-memory.dmp

memory/2084-88-0x0000000000400000-0x0000000000614000-memory.dmp

memory/2084-92-0x0000000000400000-0x0000000000614000-memory.dmp

memory/2084-95-0x0000000000400000-0x0000000000614000-memory.dmp