Malware Analysis Report

2025-08-05 23:58

Sample ID 240324-tzd5badf99
Target 58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3
SHA256 58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3
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

58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3

Threat Level: Known bad

The file 58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3 was found to be: Known bad.

Malicious Activity Summary

socks5systemz botnet discovery

Detect Socks5Systemz Payload

Socks5Systemz

Unexpected DNS network traffic destination

Executes dropped EXE

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 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 16:31

Platform

win10v2004-20231215-en

Max time kernel

144s

Max time network

145s

Command Line

"C:\Users\Admin\AppData\Local\Temp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.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 45.155.250.90 N/A N/A

Checks installed software on the system

discovery

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1736 wrote to memory of 3208 N/A C:\Users\Admin\AppData\Local\Temp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.exe C:\Users\Admin\AppData\Local\Temp\is-2CHKU.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp
PID 1736 wrote to memory of 3208 N/A C:\Users\Admin\AppData\Local\Temp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.exe C:\Users\Admin\AppData\Local\Temp\is-2CHKU.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp
PID 1736 wrote to memory of 3208 N/A C:\Users\Admin\AppData\Local\Temp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.exe C:\Users\Admin\AppData\Local\Temp\is-2CHKU.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp
PID 3208 wrote to memory of 2116 N/A C:\Users\Admin\AppData\Local\Temp\is-2CHKU.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 3208 wrote to memory of 2116 N/A C:\Users\Admin\AppData\Local\Temp\is-2CHKU.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 3208 wrote to memory of 2116 N/A C:\Users\Admin\AppData\Local\Temp\is-2CHKU.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 3208 wrote to memory of 1344 N/A C:\Users\Admin\AppData\Local\Temp\is-2CHKU.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 3208 wrote to memory of 1344 N/A C:\Users\Admin\AppData\Local\Temp\is-2CHKU.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 3208 wrote to memory of 1344 N/A C:\Users\Admin\AppData\Local\Temp\is-2CHKU.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

Processes

C:\Users\Admin\AppData\Local\Temp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.exe

"C:\Users\Admin\AppData\Local\Temp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.exe"

C:\Users\Admin\AppData\Local\Temp\is-2CHKU.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp

"C:\Users\Admin\AppData\Local\Temp\is-2CHKU.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp" /SL5="$5011A,1883071,54272,C:\Users\Admin\AppData\Local\Temp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.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 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 75.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 1.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.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 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 138.91.171.81:80 tcp
US 8.8.8.8:53 56.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 71.179.17.96.in-addr.arpa udp
SE 45.155.250.90:53 ervuvue.ua udp
MD 45.142.214.240:80 ervuvue.ua tcp
NL 89.105.201.183:2023 tcp
US 8.8.8.8:53 90.250.155.45.in-addr.arpa udp
US 8.8.8.8:53 240.214.142.45.in-addr.arpa udp
US 8.8.8.8:53 183.201.105.89.in-addr.arpa udp
US 8.8.8.8:53 3.173.189.20.in-addr.arpa udp

Files

memory/1736-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/1736-2-0x0000000000400000-0x0000000000414000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-2CHKU.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp

MD5 5a1e3d46cb5a24f8e50b2a59d2ba1cf3
SHA1 fe86894c4757c144449bc744649b7fb9e03346f1
SHA256 d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d
SHA512 a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

memory/3208-7-0x0000000000650000-0x0000000000651000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-E7HVU.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

MD5 8137ffd3a3a9aea8838730a19442b5c0
SHA1 11e3bfceaf5a747c3d81cb6916132dbb2f893cc5
SHA256 0e50507b35633bd387895c1fab90a803bd63b27bd0e63b6ace8b5f9dfe1bf352
SHA512 969afa20bc66da92876da048ecd018f5c65b30eadda75c86620139349a929cae1d23a3fe95f7f12de32a6fb8a45c7e952324e64007868badf9a2c8cfa87d0353

memory/2116-38-0x0000000000400000-0x000000000062D000-memory.dmp

memory/2116-39-0x0000000000400000-0x000000000062D000-memory.dmp

memory/2116-42-0x0000000000400000-0x000000000062D000-memory.dmp

memory/2116-43-0x0000000000400000-0x000000000062D000-memory.dmp

memory/1344-46-0x0000000000400000-0x000000000062D000-memory.dmp

memory/1736-47-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3208-48-0x0000000000400000-0x00000000004B8000-memory.dmp

memory/1344-49-0x0000000000400000-0x000000000062D000-memory.dmp

memory/3208-50-0x0000000000650000-0x0000000000651000-memory.dmp

memory/1344-53-0x0000000000400000-0x000000000062D000-memory.dmp

memory/1344-54-0x0000000000400000-0x000000000062D000-memory.dmp

memory/1344-57-0x0000000000400000-0x000000000062D000-memory.dmp

memory/1344-60-0x0000000000400000-0x000000000062D000-memory.dmp

memory/1344-63-0x0000000000400000-0x000000000062D000-memory.dmp

memory/1344-65-0x0000000000730000-0x00000000007D2000-memory.dmp

memory/1344-68-0x0000000000400000-0x000000000062D000-memory.dmp

memory/1344-69-0x0000000000730000-0x00000000007D2000-memory.dmp

memory/1344-74-0x0000000000400000-0x000000000062D000-memory.dmp

memory/1344-77-0x0000000000400000-0x000000000062D000-memory.dmp

memory/1344-78-0x0000000000730000-0x00000000007D2000-memory.dmp

memory/1344-81-0x0000000000400000-0x000000000062D000-memory.dmp

memory/1344-84-0x0000000000400000-0x000000000062D000-memory.dmp

memory/1344-87-0x0000000000400000-0x000000000062D000-memory.dmp

memory/1344-90-0x0000000000400000-0x000000000062D000-memory.dmp

memory/1344-91-0x0000000000730000-0x00000000007D2000-memory.dmp

memory/1344-92-0x0000000000730000-0x00000000007D2000-memory.dmp

memory/1344-96-0x0000000000400000-0x000000000062D000-memory.dmp

memory/1344-99-0x0000000000400000-0x000000000062D000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-24 16:29

Reported

2024-03-24 16:31

Platform

win11-20240221-en

Max time kernel

147s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.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 45.155.250.90 N/A N/A

Checks installed software on the system

discovery

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 988 wrote to memory of 3584 N/A C:\Users\Admin\AppData\Local\Temp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.exe C:\Users\Admin\AppData\Local\Temp\is-GM48N.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp
PID 988 wrote to memory of 3584 N/A C:\Users\Admin\AppData\Local\Temp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.exe C:\Users\Admin\AppData\Local\Temp\is-GM48N.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp
PID 988 wrote to memory of 3584 N/A C:\Users\Admin\AppData\Local\Temp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.exe C:\Users\Admin\AppData\Local\Temp\is-GM48N.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp
PID 3584 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\is-GM48N.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 3584 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\is-GM48N.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 3584 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\is-GM48N.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 3584 wrote to memory of 2424 N/A C:\Users\Admin\AppData\Local\Temp\is-GM48N.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 3584 wrote to memory of 2424 N/A C:\Users\Admin\AppData\Local\Temp\is-GM48N.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
PID 3584 wrote to memory of 2424 N/A C:\Users\Admin\AppData\Local\Temp\is-GM48N.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

Processes

C:\Users\Admin\AppData\Local\Temp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.exe

"C:\Users\Admin\AppData\Local\Temp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.exe"

C:\Users\Admin\AppData\Local\Temp\is-GM48N.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp

"C:\Users\Admin\AppData\Local\Temp\is-GM48N.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp" /SL5="$B005E,1883071,54272,C:\Users\Admin\AppData\Local\Temp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.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
SE 45.155.250.90:53 ddmztkd.info udp
MD 45.142.214.240:80 ddmztkd.info tcp
NL 89.105.201.183:2023 tcp
US 8.8.8.8:53 240.214.142.45.in-addr.arpa udp
US 8.8.8.8:53 183.201.105.89.in-addr.arpa udp

Files

memory/988-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/988-2-0x0000000000400000-0x0000000000414000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-GM48N.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp

MD5 5a1e3d46cb5a24f8e50b2a59d2ba1cf3
SHA1 fe86894c4757c144449bc744649b7fb9e03346f1
SHA256 d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d
SHA512 a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

memory/3584-7-0x0000000002440000-0x0000000002441000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-V4OKB.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

MD5 ce00a22d9427009328a637bb15a3a128
SHA1 02fc31501ac482d6b7dde318c551d4022d3f9a2b
SHA256 5988ee207ad7202ffd9cb1ff49469d9eb849d1091145afbb39972afe274d494a
SHA512 62973b844b12cce11e4d2de0ad9e698f5b98c87636b61ac3e0818319063b36f232b6740430db315ec82104eaf727a7d29198a3e3b647a50b42b5e26607a643f3

memory/1324-38-0x0000000000400000-0x000000000062D000-memory.dmp

memory/1324-39-0x0000000000400000-0x000000000062D000-memory.dmp

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

MD5 703ac6e031c795b33f1ec90d71b384ab
SHA1 beb5f5f150db9cf32719c1bb794f432b23dc709f
SHA256 747912de874b08b045f47e3d046fd00835d40964f0a1501bef9a1990ca079869
SHA512 1845e0097663d497d72b6526a8ced988e10b692d3caa5f2760fbaf49be47ab3e7aa9bb3e66754be2c311e28c62ab658d51f4b0cd7ccdab838ea9f1bb455f8ec0

memory/1324-42-0x0000000000400000-0x000000000062D000-memory.dmp

memory/1324-43-0x0000000000400000-0x000000000062D000-memory.dmp

memory/2424-47-0x0000000000400000-0x000000000062D000-memory.dmp

memory/2424-46-0x0000000000400000-0x000000000062D000-memory.dmp

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

MD5 8137ffd3a3a9aea8838730a19442b5c0
SHA1 11e3bfceaf5a747c3d81cb6916132dbb2f893cc5
SHA256 0e50507b35633bd387895c1fab90a803bd63b27bd0e63b6ace8b5f9dfe1bf352
SHA512 969afa20bc66da92876da048ecd018f5c65b30eadda75c86620139349a929cae1d23a3fe95f7f12de32a6fb8a45c7e952324e64007868badf9a2c8cfa87d0353

memory/988-48-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3584-49-0x0000000000400000-0x00000000004B8000-memory.dmp

memory/2424-50-0x0000000000400000-0x000000000062D000-memory.dmp

memory/3584-51-0x0000000002440000-0x0000000002441000-memory.dmp

memory/1324-52-0x0000000000400000-0x000000000062D000-memory.dmp

memory/2424-53-0x0000000000400000-0x000000000062D000-memory.dmp

memory/2424-56-0x0000000000400000-0x000000000062D000-memory.dmp

memory/2424-59-0x0000000000400000-0x000000000062D000-memory.dmp

memory/2424-62-0x0000000000400000-0x000000000062D000-memory.dmp

memory/2424-65-0x0000000000400000-0x000000000062D000-memory.dmp

memory/2424-66-0x0000000000980000-0x0000000000A22000-memory.dmp

memory/2424-70-0x0000000000400000-0x000000000062D000-memory.dmp

memory/2424-71-0x0000000000980000-0x0000000000A22000-memory.dmp

memory/2424-76-0x0000000000400000-0x000000000062D000-memory.dmp

memory/2424-79-0x0000000000400000-0x000000000062D000-memory.dmp

memory/2424-80-0x0000000000980000-0x0000000000A22000-memory.dmp

memory/2424-83-0x0000000000400000-0x000000000062D000-memory.dmp

memory/2424-86-0x0000000000400000-0x000000000062D000-memory.dmp

memory/2424-89-0x0000000000400000-0x000000000062D000-memory.dmp

memory/2424-92-0x0000000000400000-0x000000000062D000-memory.dmp

memory/2424-93-0x0000000000980000-0x0000000000A22000-memory.dmp

memory/2424-94-0x0000000000980000-0x0000000000A22000-memory.dmp

memory/2424-98-0x0000000000400000-0x000000000062D000-memory.dmp

memory/2424-101-0x0000000000400000-0x000000000062D000-memory.dmp