Malware Analysis Report

2025-08-05 10:43

Sample ID 240811-ptzfvatgja
Target aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e
SHA256 aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e
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

aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e

Threat Level: Known bad

The file aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e 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

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-11 12:37

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-11 12:37

Reported

2024-08-11 12:40

Platform

win10v2004-20240802-en

Max time kernel

144s

Max time network

133s

Command Line

"C:\Users\Admin\AppData\Local\Temp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.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 91.211.247.248 N/A N/A

Checks installed software on the system

discovery

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\is-T8A8S.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-T8A8S.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 836 wrote to memory of 1508 N/A C:\Users\Admin\AppData\Local\Temp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.exe C:\Users\Admin\AppData\Local\Temp\is-T8A8S.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp
PID 836 wrote to memory of 1508 N/A C:\Users\Admin\AppData\Local\Temp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.exe C:\Users\Admin\AppData\Local\Temp\is-T8A8S.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp
PID 836 wrote to memory of 1508 N/A C:\Users\Admin\AppData\Local\Temp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.exe C:\Users\Admin\AppData\Local\Temp\is-T8A8S.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp
PID 1508 wrote to memory of 4704 N/A C:\Users\Admin\AppData\Local\Temp\is-T8A8S.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe
PID 1508 wrote to memory of 4704 N/A C:\Users\Admin\AppData\Local\Temp\is-T8A8S.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe
PID 1508 wrote to memory of 4704 N/A C:\Users\Admin\AppData\Local\Temp\is-T8A8S.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe
PID 1508 wrote to memory of 2372 N/A C:\Users\Admin\AppData\Local\Temp\is-T8A8S.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe
PID 1508 wrote to memory of 2372 N/A C:\Users\Admin\AppData\Local\Temp\is-T8A8S.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe
PID 1508 wrote to memory of 2372 N/A C:\Users\Admin\AppData\Local\Temp\is-T8A8S.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.exe

"C:\Users\Admin\AppData\Local\Temp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.exe"

C:\Users\Admin\AppData\Local\Temp\is-T8A8S.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp

"C:\Users\Admin\AppData\Local\Temp\is-T8A8S.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp" /SL5="$901F4,3310936,54272,C:\Users\Admin\AppData\Local\Temp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.exe"

C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe

"C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe" -i

C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe

"C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe" -s

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
LT 91.211.247.248:53 ayjnebe.ru udp
CH 185.196.8.214:80 ayjnebe.ru tcp
US 8.8.8.8:53 248.247.211.91.in-addr.arpa udp
US 8.8.8.8:53 214.8.196.185.in-addr.arpa udp
NL 45.156.23.96:2023 tcp
US 8.8.8.8:53 96.23.156.45.in-addr.arpa udp

Files

memory/836-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/836-2-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-T8A8S.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp

MD5 4a034cc8809b92775041cc5a46c52ab0
SHA1 3f2c748bf00a2aa6f3a86c6dfd8a3d667007a54d
SHA256 4dfae16c80e15d6e45b60b5b847e1a641af184e3e06727fc3406355de9227e60
SHA512 e1d4c9bff206800681a17b4487978a290d365a6593678741b6924394217bc352f1132add01e8e90b9b1b78f1f3bd606c2ff51955c8673503c5e28fb04afc71f6

memory/1508-12-0x0000000000400000-0x00000000004BD000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-K6N6M.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe

MD5 417ddf93714ba30253af108796907a18
SHA1 4e9c6c65ff0294eb4a3c68ecbc245cd3fda1e15f
SHA256 a8037cc1f34a5f69fd5afce05634245e3bd6cd05dd750dcc40a25a721579b2a6
SHA512 6e204ccb061b87e041789ce12f4cfe9143f42f4c222c6c64efb8da13330dd651b69ce0fbfde3c942e7c3a5d43c27369319f1f495e24f61adb6975afb7ca8f5f7

memory/4704-52-0x0000000000400000-0x0000000000717000-memory.dmp

memory/4704-54-0x0000000000400000-0x0000000000717000-memory.dmp

memory/4704-55-0x0000000000400000-0x0000000000717000-memory.dmp

memory/4704-57-0x0000000000400000-0x0000000000717000-memory.dmp

memory/2372-60-0x0000000000400000-0x0000000000717000-memory.dmp

memory/836-61-0x0000000000400000-0x0000000000414000-memory.dmp

memory/1508-62-0x0000000000400000-0x00000000004BD000-memory.dmp

memory/2372-63-0x0000000000400000-0x0000000000717000-memory.dmp

memory/2372-66-0x0000000000400000-0x0000000000717000-memory.dmp

memory/2372-67-0x0000000000400000-0x0000000000717000-memory.dmp

memory/2372-70-0x0000000000400000-0x0000000000717000-memory.dmp

memory/2372-73-0x0000000000400000-0x0000000000717000-memory.dmp

memory/2372-76-0x0000000000400000-0x0000000000717000-memory.dmp

memory/2372-79-0x0000000002570000-0x0000000002612000-memory.dmp

memory/2372-81-0x0000000000400000-0x0000000000717000-memory.dmp

memory/2372-86-0x0000000000400000-0x0000000000717000-memory.dmp

memory/2372-89-0x0000000000400000-0x0000000000717000-memory.dmp

memory/2372-92-0x0000000000400000-0x0000000000717000-memory.dmp

memory/2372-95-0x0000000000400000-0x0000000000717000-memory.dmp

memory/2372-98-0x0000000000400000-0x0000000000717000-memory.dmp

memory/2372-101-0x0000000000400000-0x0000000000717000-memory.dmp

memory/2372-102-0x0000000002570000-0x0000000002612000-memory.dmp

memory/2372-103-0x0000000002570000-0x0000000002612000-memory.dmp

memory/2372-107-0x0000000000400000-0x0000000000717000-memory.dmp

memory/2372-110-0x0000000000400000-0x0000000000717000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-11 12:37

Reported

2024-08-11 12:40

Platform

win11-20240802-en

Max time kernel

144s

Max time network

143s

Command Line

"C:\Users\Admin\AppData\Local\Temp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.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 45.155.250.90 N/A N/A

Checks installed software on the system

discovery

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\is-6T9LV.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-6T9LV.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4712 wrote to memory of 2924 N/A C:\Users\Admin\AppData\Local\Temp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.exe C:\Users\Admin\AppData\Local\Temp\is-6T9LV.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp
PID 4712 wrote to memory of 2924 N/A C:\Users\Admin\AppData\Local\Temp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.exe C:\Users\Admin\AppData\Local\Temp\is-6T9LV.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp
PID 4712 wrote to memory of 2924 N/A C:\Users\Admin\AppData\Local\Temp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.exe C:\Users\Admin\AppData\Local\Temp\is-6T9LV.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp
PID 2924 wrote to memory of 2804 N/A C:\Users\Admin\AppData\Local\Temp\is-6T9LV.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe
PID 2924 wrote to memory of 2804 N/A C:\Users\Admin\AppData\Local\Temp\is-6T9LV.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe
PID 2924 wrote to memory of 2804 N/A C:\Users\Admin\AppData\Local\Temp\is-6T9LV.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe
PID 2924 wrote to memory of 5608 N/A C:\Users\Admin\AppData\Local\Temp\is-6T9LV.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe
PID 2924 wrote to memory of 5608 N/A C:\Users\Admin\AppData\Local\Temp\is-6T9LV.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe
PID 2924 wrote to memory of 5608 N/A C:\Users\Admin\AppData\Local\Temp\is-6T9LV.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.exe

"C:\Users\Admin\AppData\Local\Temp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.exe"

C:\Users\Admin\AppData\Local\Temp\is-6T9LV.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp

"C:\Users\Admin\AppData\Local\Temp\is-6T9LV.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp" /SL5="$13022C,3310936,54272,C:\Users\Admin\AppData\Local\Temp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.exe"

C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe

"C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe" -i

C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe

"C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe" -s

Network

Country Destination Domain Proto
SE 45.155.250.90:53 ckjsecl.net udp
CH 185.196.8.214:80 ckjsecl.net tcp

Files

memory/4712-1-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4712-2-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-6T9LV.tmp\aec9a0fbad7f4c73eb73897139115e966018adee2e550f0b4cdc9aea13c8304e.tmp

MD5 4a034cc8809b92775041cc5a46c52ab0
SHA1 3f2c748bf00a2aa6f3a86c6dfd8a3d667007a54d
SHA256 4dfae16c80e15d6e45b60b5b847e1a641af184e3e06727fc3406355de9227e60
SHA512 e1d4c9bff206800681a17b4487978a290d365a6593678741b6924394217bc352f1132add01e8e90b9b1b78f1f3bd606c2ff51955c8673503c5e28fb04afc71f6

memory/2924-13-0x0000000000400000-0x00000000004BD000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-H0I0I.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\XULPlayer\xulplayer32.exe

MD5 417ddf93714ba30253af108796907a18
SHA1 4e9c6c65ff0294eb4a3c68ecbc245cd3fda1e15f
SHA256 a8037cc1f34a5f69fd5afce05634245e3bd6cd05dd750dcc40a25a721579b2a6
SHA512 6e204ccb061b87e041789ce12f4cfe9143f42f4c222c6c64efb8da13330dd651b69ce0fbfde3c942e7c3a5d43c27369319f1f495e24f61adb6975afb7ca8f5f7

memory/2804-52-0x0000000000400000-0x0000000000717000-memory.dmp

memory/2804-53-0x0000000000400000-0x0000000000717000-memory.dmp

memory/2804-54-0x0000000000400000-0x0000000000717000-memory.dmp

memory/2804-57-0x0000000000400000-0x0000000000717000-memory.dmp

memory/5608-60-0x0000000000400000-0x0000000000717000-memory.dmp

memory/4712-61-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2924-62-0x0000000000400000-0x00000000004BD000-memory.dmp

memory/5608-63-0x0000000000400000-0x0000000000717000-memory.dmp

memory/5608-66-0x0000000000400000-0x0000000000717000-memory.dmp

memory/5608-67-0x0000000000400000-0x0000000000717000-memory.dmp

memory/5608-70-0x0000000000400000-0x0000000000717000-memory.dmp

memory/5608-73-0x0000000000400000-0x0000000000717000-memory.dmp

memory/5608-76-0x0000000000400000-0x0000000000717000-memory.dmp

memory/5608-79-0x0000000000A50000-0x0000000000AF2000-memory.dmp

memory/5608-80-0x0000000000400000-0x0000000000717000-memory.dmp

memory/5608-86-0x0000000000400000-0x0000000000717000-memory.dmp

memory/5608-89-0x0000000000400000-0x0000000000717000-memory.dmp

memory/5608-90-0x0000000000400000-0x0000000000717000-memory.dmp

memory/5608-93-0x0000000000400000-0x0000000000717000-memory.dmp

memory/5608-96-0x0000000000400000-0x0000000000717000-memory.dmp

memory/5608-99-0x0000000000400000-0x0000000000717000-memory.dmp

memory/5608-102-0x0000000000400000-0x0000000000717000-memory.dmp

memory/5608-106-0x0000000000400000-0x0000000000717000-memory.dmp

memory/5608-109-0x0000000000400000-0x0000000000717000-memory.dmp