Malware Analysis Report

2025-08-11 05:09

Sample ID 240323-lm2e3sfb48
Target b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e
SHA256 b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e
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

b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e

Threat Level: Known bad

The file b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e was found to be: Known bad.

Malicious Activity Summary

socks5systemz botnet discovery

Detect Socks5Systemz Payload

Socks5Systemz

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 WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-23 09:39

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-23 09:39

Reported

2024-03-23 09:42

Platform

win10v2004-20240226-en

Max time kernel

147s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.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 WriteProcessMemory

Description Indicator Process Target
PID 5060 wrote to memory of 944 N/A C:\Users\Admin\AppData\Local\Temp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe C:\Users\Admin\AppData\Local\Temp\is-E83K4.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp
PID 5060 wrote to memory of 944 N/A C:\Users\Admin\AppData\Local\Temp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe C:\Users\Admin\AppData\Local\Temp\is-E83K4.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp
PID 5060 wrote to memory of 944 N/A C:\Users\Admin\AppData\Local\Temp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe C:\Users\Admin\AppData\Local\Temp\is-E83K4.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp
PID 944 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Local\Temp\is-E83K4.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
PID 944 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Local\Temp\is-E83K4.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
PID 944 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Local\Temp\is-E83K4.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
PID 944 wrote to memory of 1192 N/A C:\Users\Admin\AppData\Local\Temp\is-E83K4.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
PID 944 wrote to memory of 1192 N/A C:\Users\Admin\AppData\Local\Temp\is-E83K4.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
PID 944 wrote to memory of 1192 N/A C:\Users\Admin\AppData\Local\Temp\is-E83K4.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe

"C:\Users\Admin\AppData\Local\Temp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe"

C:\Users\Admin\AppData\Local\Temp\is-E83K4.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp

"C:\Users\Admin\AppData\Local\Temp\is-E83K4.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp" /SL5="$B0050,1722205,54272,C:\Users\Admin\AppData\Local\Temp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe"

C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe

"C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -i

C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe

"C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -s

Network

Country Destination Domain Proto
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
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 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.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 8.8.8.8:53 55.36.223.20.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 23.236.111.52.in-addr.arpa udp
RU 152.89.198.214:53 aixkcbe.ru udp
MD 45.142.214.240:80 aixkcbe.ru tcp
US 8.8.8.8:53 214.198.89.152.in-addr.arpa udp
US 8.8.8.8:53 240.214.142.45.in-addr.arpa udp
US 8.8.8.8:53 154.141.79.40.in-addr.arpa udp

Files

memory/5060-0-0x0000000000400000-0x0000000000414000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-E83K4.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp

MD5 88d7ea648defbc2597fa38ef83112eda
SHA1 2bce9acfb1b5e08dc29c695eff12fc80949c6440
SHA256 5a53b8bd78b1bbf24136b4d8d8191f503abcc24934626ed6f15bf9f6dee17b68
SHA512 050ce971e1f7a4e92d272c9c3c9f96f1214286523b018a75084c76dbebb5f32a717afbd9af9c68b7ad71f738c0a331640a8fe765cb4def90678eae4769b2e66a

memory/944-6-0x0000000002340000-0x0000000002341000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-7LSAH.tmp\_isetup\_isdecmp.dll

MD5 b6f11a0ab7715f570f45900a1fe84732
SHA1 77b1201e535445af5ea94c1b03c0a1c34d67a77b
SHA256 e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67
SHA512 78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

C:\Users\Admin\AppData\Local\Temp\is-7LSAH.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe

MD5 e1377c17e6c6bf04ead10fc76a847e2a
SHA1 1963ab0f5faca44637fd0fe8b1041c763bceebb1
SHA256 a52e5779bec20092f903389069e5ba5c6060987e255b203b6b0d9d5ac791296b
SHA512 9bc7d2fac768d4472b0629ae6ed308663b9902a486a9022f1f3a6c4bc09793c639a8e51968baf07d835592e156adbecee6bd705b1289dd0885c1665c761d8808

memory/3848-43-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/3848-44-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/3848-48-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/3848-45-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/1192-51-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/5060-52-0x0000000000400000-0x0000000000414000-memory.dmp

memory/944-53-0x0000000000400000-0x00000000004B8000-memory.dmp

memory/1192-54-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/944-55-0x0000000002340000-0x0000000002341000-memory.dmp

memory/1192-58-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/1192-59-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/1192-62-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/1192-65-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/1192-68-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/1192-71-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/1192-73-0x0000000000830000-0x00000000008D2000-memory.dmp

memory/1192-72-0x0000000000830000-0x00000000008D2000-memory.dmp

memory/1192-79-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/1192-82-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/1192-83-0x0000000000830000-0x00000000008D2000-memory.dmp

memory/1192-86-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/1192-89-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/1192-92-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/1192-95-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/1192-99-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/1192-102-0x0000000000400000-0x00000000005D4000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-23 09:39

Reported

2024-03-23 09:42

Platform

win11-20240221-en

Max time kernel

147s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.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 3184 wrote to memory of 1036 N/A C:\Users\Admin\AppData\Local\Temp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe C:\Users\Admin\AppData\Local\Temp\is-49V0U.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp
PID 3184 wrote to memory of 1036 N/A C:\Users\Admin\AppData\Local\Temp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe C:\Users\Admin\AppData\Local\Temp\is-49V0U.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp
PID 3184 wrote to memory of 1036 N/A C:\Users\Admin\AppData\Local\Temp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe C:\Users\Admin\AppData\Local\Temp\is-49V0U.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp
PID 1036 wrote to memory of 3384 N/A C:\Users\Admin\AppData\Local\Temp\is-49V0U.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
PID 1036 wrote to memory of 3384 N/A C:\Users\Admin\AppData\Local\Temp\is-49V0U.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
PID 1036 wrote to memory of 3384 N/A C:\Users\Admin\AppData\Local\Temp\is-49V0U.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
PID 1036 wrote to memory of 4828 N/A C:\Users\Admin\AppData\Local\Temp\is-49V0U.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
PID 1036 wrote to memory of 4828 N/A C:\Users\Admin\AppData\Local\Temp\is-49V0U.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
PID 1036 wrote to memory of 4828 N/A C:\Users\Admin\AppData\Local\Temp\is-49V0U.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe

"C:\Users\Admin\AppData\Local\Temp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe"

C:\Users\Admin\AppData\Local\Temp\is-49V0U.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp

"C:\Users\Admin\AppData\Local\Temp\is-49V0U.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp" /SL5="$5016C,1722205,54272,C:\Users\Admin\AppData\Local\Temp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe"

C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe

"C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -i

C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe

"C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -s

Network

Country Destination Domain Proto
HK 141.98.234.31:53 bogilpz.com udp
MD 45.142.214.240:80 bogilpz.com tcp
US 8.8.8.8:53 240.214.142.45.in-addr.arpa udp

Files

memory/3184-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3184-2-0x0000000000400000-0x0000000000414000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-49V0U.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp

MD5 88d7ea648defbc2597fa38ef83112eda
SHA1 2bce9acfb1b5e08dc29c695eff12fc80949c6440
SHA256 5a53b8bd78b1bbf24136b4d8d8191f503abcc24934626ed6f15bf9f6dee17b68
SHA512 050ce971e1f7a4e92d272c9c3c9f96f1214286523b018a75084c76dbebb5f32a717afbd9af9c68b7ad71f738c0a331640a8fe765cb4def90678eae4769b2e66a

memory/1036-7-0x0000000002300000-0x0000000002301000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-1QJ8B.tmp\_isetup\_isdecmp.dll

MD5 b6f11a0ab7715f570f45900a1fe84732
SHA1 77b1201e535445af5ea94c1b03c0a1c34d67a77b
SHA256 e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67
SHA512 78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

C:\Users\Admin\AppData\Local\Temp\is-1QJ8B.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe

MD5 641d64ff0a6e490f7bcf563bbb4ed106
SHA1 87cd1abc300a0e5f3f36fc548ec3b2e9726011ee
SHA256 5762582217d2c2696e11b4059a62c740f7a906bedc8b159d1897041f169a6541
SHA512 e3043b8923844fc1d839b6f93ebbfe9aaaf5c95a8cd284515cc63f5fe5291c802f3c7306642a6dcfd6f10f0c63240fc7dd74fc24b968493d5a964f494196e5bc

memory/3384-44-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/3384-45-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/3384-48-0x0000000000400000-0x00000000005D4000-memory.dmp

C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe

MD5 e1377c17e6c6bf04ead10fc76a847e2a
SHA1 1963ab0f5faca44637fd0fe8b1041c763bceebb1
SHA256 a52e5779bec20092f903389069e5ba5c6060987e255b203b6b0d9d5ac791296b
SHA512 9bc7d2fac768d4472b0629ae6ed308663b9902a486a9022f1f3a6c4bc09793c639a8e51968baf07d835592e156adbecee6bd705b1289dd0885c1665c761d8808

memory/3384-49-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/4828-52-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/3184-53-0x0000000000400000-0x0000000000414000-memory.dmp

memory/1036-54-0x0000000000400000-0x00000000004B8000-memory.dmp

memory/4828-55-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/1036-56-0x0000000002300000-0x0000000002301000-memory.dmp

memory/4828-59-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/4828-60-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/4828-63-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/4828-66-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/4828-69-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/4828-71-0x00000000009A0000-0x0000000000A42000-memory.dmp

memory/4828-73-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/4828-75-0x00000000009A0000-0x0000000000A42000-memory.dmp

memory/4828-80-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/4828-83-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/4828-84-0x00000000009A0000-0x0000000000A42000-memory.dmp

memory/4828-87-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/4828-90-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/4828-93-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/4828-96-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/4828-100-0x0000000000400000-0x00000000005D4000-memory.dmp

memory/4828-103-0x0000000000400000-0x00000000005D4000-memory.dmp