Malware Analysis Report

2025-08-11 07:28

Sample ID 240802-mc9t5szcmc
Target 72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d
SHA256 72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d
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

72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d

Threat Level: Known bad

The file 72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d 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

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

2024-08-02 10:20

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-02 10:20

Reported

2024-08-02 10:22

Platform

win10v2004-20240730-en

Max time kernel

143s

Max time network

129s

Command Line

"C:\Users\Admin\AppData\Local\Temp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.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

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\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\is-IHQLL.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-IHQLL.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3184 wrote to memory of 2200 N/A C:\Users\Admin\AppData\Local\Temp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.exe C:\Users\Admin\AppData\Local\Temp\is-IHQLL.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp
PID 3184 wrote to memory of 2200 N/A C:\Users\Admin\AppData\Local\Temp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.exe C:\Users\Admin\AppData\Local\Temp\is-IHQLL.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp
PID 3184 wrote to memory of 2200 N/A C:\Users\Admin\AppData\Local\Temp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.exe C:\Users\Admin\AppData\Local\Temp\is-IHQLL.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp
PID 2200 wrote to memory of 2568 N/A C:\Users\Admin\AppData\Local\Temp\is-IHQLL.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe
PID 2200 wrote to memory of 2568 N/A C:\Users\Admin\AppData\Local\Temp\is-IHQLL.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe
PID 2200 wrote to memory of 2568 N/A C:\Users\Admin\AppData\Local\Temp\is-IHQLL.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe
PID 2200 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\is-IHQLL.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe
PID 2200 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\is-IHQLL.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe
PID 2200 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\is-IHQLL.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe

Processes

C:\Users\Admin\AppData\Local\Temp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.exe

"C:\Users\Admin\AppData\Local\Temp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.exe"

C:\Users\Admin\AppData\Local\Temp\is-IHQLL.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp

"C:\Users\Admin\AppData\Local\Temp\is-IHQLL.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp" /SL5="$70060,3947907,54272,C:\Users\Admin\AppData\Local\Temp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.exe"

C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe

"C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe" -i

C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe

"C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe" -s

Network

Country Destination Domain Proto
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 65.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
RU 152.89.198.214:53 dihfvjd.info udp
CH 185.196.8.214:80 dihfvjd.info tcp
US 8.8.8.8:53 214.8.196.185.in-addr.arpa udp
US 8.8.8.8:53 214.198.89.152.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/3184-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3184-2-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-IHQLL.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp

MD5 b26f241a82d0fe33b717d9b11f784b6f
SHA1 f21b6bb700e33fda7413fd383f200b99af7af5d0
SHA256 56e6db8c3a0ce885cf731ce797c34e4a4d04380e23ad0fc1f77676b2f8dfa3ce
SHA512 d35f972621f853c0b0650c6b3240a2632a564bdd05215010c40cae7092d1407d557dc32a65359acd843d1c64ba635ae273d764d26fa6948623be40834425379a

C:\Users\Admin\AppData\Local\Temp\is-FAR4T.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

memory/2200-16-0x0000000000400000-0x00000000004BD000-memory.dmp

C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe

MD5 904a8cc14f2c82e8672cd82990fbfa71
SHA1 111e9fbbb2ef0a56b59df698727c48fc054efb82
SHA256 f066a0888bc5ad3b8c91cdbc16ebd5046327149b8baa735226b118d9be0b32b5
SHA512 1f7d8484df0cfa8e7ee887398df81e5d1bc92f029330c1ba34fd29f2e6d6c0a33a3133f436ad303442c33320d2ed1eb76157a9d37795451fd238396cc38c4645

memory/2568-52-0x0000000000400000-0x0000000000875000-memory.dmp

memory/2568-53-0x0000000000400000-0x0000000000875000-memory.dmp

memory/2568-54-0x0000000000400000-0x0000000000875000-memory.dmp

memory/2568-56-0x0000000000400000-0x0000000000875000-memory.dmp

memory/4572-59-0x0000000000400000-0x0000000000875000-memory.dmp

memory/3184-60-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2200-61-0x0000000000400000-0x00000000004BD000-memory.dmp

memory/4572-62-0x0000000000400000-0x0000000000875000-memory.dmp

memory/4572-65-0x0000000000400000-0x0000000000875000-memory.dmp

memory/4572-68-0x0000000000400000-0x0000000000875000-memory.dmp

memory/4572-71-0x0000000000400000-0x0000000000875000-memory.dmp

memory/4572-74-0x0000000000400000-0x0000000000875000-memory.dmp

memory/4572-77-0x0000000000B60000-0x0000000000C02000-memory.dmp

memory/4572-79-0x0000000000400000-0x0000000000875000-memory.dmp

memory/4572-84-0x0000000000400000-0x0000000000875000-memory.dmp

memory/4572-87-0x0000000000400000-0x0000000000875000-memory.dmp

memory/4572-90-0x0000000000400000-0x0000000000875000-memory.dmp

memory/4572-93-0x0000000000400000-0x0000000000875000-memory.dmp

memory/4572-96-0x0000000000400000-0x0000000000875000-memory.dmp

memory/4572-99-0x0000000000400000-0x0000000000875000-memory.dmp

memory/4572-100-0x0000000000B60000-0x0000000000C02000-memory.dmp

memory/4572-101-0x0000000000B60000-0x0000000000C02000-memory.dmp

memory/4572-105-0x0000000000400000-0x0000000000875000-memory.dmp

memory/4572-108-0x0000000000400000-0x0000000000875000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-02 10:20

Reported

2024-08-02 10:22

Platform

win11-20240729-en

Max time kernel

141s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.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\Temp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\is-JPLU5.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-JPLU5.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 488 wrote to memory of 3452 N/A C:\Users\Admin\AppData\Local\Temp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.exe C:\Users\Admin\AppData\Local\Temp\is-JPLU5.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp
PID 488 wrote to memory of 3452 N/A C:\Users\Admin\AppData\Local\Temp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.exe C:\Users\Admin\AppData\Local\Temp\is-JPLU5.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp
PID 488 wrote to memory of 3452 N/A C:\Users\Admin\AppData\Local\Temp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.exe C:\Users\Admin\AppData\Local\Temp\is-JPLU5.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp
PID 3452 wrote to memory of 3636 N/A C:\Users\Admin\AppData\Local\Temp\is-JPLU5.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe
PID 3452 wrote to memory of 3636 N/A C:\Users\Admin\AppData\Local\Temp\is-JPLU5.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe
PID 3452 wrote to memory of 3636 N/A C:\Users\Admin\AppData\Local\Temp\is-JPLU5.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe
PID 3452 wrote to memory of 232 N/A C:\Users\Admin\AppData\Local\Temp\is-JPLU5.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe
PID 3452 wrote to memory of 232 N/A C:\Users\Admin\AppData\Local\Temp\is-JPLU5.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe
PID 3452 wrote to memory of 232 N/A C:\Users\Admin\AppData\Local\Temp\is-JPLU5.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe

Processes

C:\Users\Admin\AppData\Local\Temp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.exe

"C:\Users\Admin\AppData\Local\Temp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.exe"

C:\Users\Admin\AppData\Local\Temp\is-JPLU5.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp

"C:\Users\Admin\AppData\Local\Temp\is-JPLU5.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp" /SL5="$502A6,3947907,54272,C:\Users\Admin\AppData\Local\Temp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.exe"

C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe

"C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe" -i

C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe

"C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe" -s

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 16.53.126.40.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
SE 45.155.250.90:53 aqauvir.ru udp
CH 185.196.8.214:80 aqauvir.ru tcp

Files

memory/488-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/488-2-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-JPLU5.tmp\72a85d7d7a3d2e53d28457ca00e99625c0070e8c0c6869d0c6db5e9776381d2d.tmp

MD5 b26f241a82d0fe33b717d9b11f784b6f
SHA1 f21b6bb700e33fda7413fd383f200b99af7af5d0
SHA256 56e6db8c3a0ce885cf731ce797c34e4a4d04380e23ad0fc1f77676b2f8dfa3ce
SHA512 d35f972621f853c0b0650c6b3240a2632a564bdd05215010c40cae7092d1407d557dc32a65359acd843d1c64ba635ae273d764d26fa6948623be40834425379a

C:\Users\Admin\AppData\Local\Temp\is-0GI9C.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

memory/3452-16-0x0000000000400000-0x00000000004BD000-memory.dmp

C:\Users\Admin\AppData\Local\AC3Filter\ac3filter.exe

MD5 904a8cc14f2c82e8672cd82990fbfa71
SHA1 111e9fbbb2ef0a56b59df698727c48fc054efb82
SHA256 f066a0888bc5ad3b8c91cdbc16ebd5046327149b8baa735226b118d9be0b32b5
SHA512 1f7d8484df0cfa8e7ee887398df81e5d1bc92f029330c1ba34fd29f2e6d6c0a33a3133f436ad303442c33320d2ed1eb76157a9d37795451fd238396cc38c4645

memory/3636-55-0x0000000000400000-0x0000000000875000-memory.dmp

memory/3636-53-0x0000000000400000-0x0000000000875000-memory.dmp

memory/3636-57-0x0000000000400000-0x0000000000875000-memory.dmp

memory/3636-52-0x0000000000400000-0x0000000000875000-memory.dmp

memory/232-60-0x0000000000400000-0x0000000000875000-memory.dmp

memory/232-61-0x0000000000400000-0x0000000000875000-memory.dmp

memory/488-62-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3452-63-0x0000000000400000-0x00000000004BD000-memory.dmp

memory/232-64-0x0000000000400000-0x0000000000875000-memory.dmp

memory/232-66-0x0000000000400000-0x0000000000875000-memory.dmp

memory/232-68-0x0000000000400000-0x0000000000875000-memory.dmp

memory/232-71-0x0000000000400000-0x0000000000875000-memory.dmp

memory/232-74-0x0000000000400000-0x0000000000875000-memory.dmp

memory/232-77-0x0000000000400000-0x0000000000875000-memory.dmp

memory/232-79-0x0000000000B70000-0x0000000000C12000-memory.dmp

memory/232-82-0x0000000000400000-0x0000000000875000-memory.dmp

memory/232-88-0x0000000000400000-0x0000000000875000-memory.dmp

memory/232-91-0x0000000000400000-0x0000000000875000-memory.dmp

memory/232-94-0x0000000000400000-0x0000000000875000-memory.dmp

memory/232-97-0x0000000000400000-0x0000000000875000-memory.dmp

memory/232-100-0x0000000000400000-0x0000000000875000-memory.dmp

memory/232-103-0x0000000000400000-0x0000000000875000-memory.dmp

memory/232-107-0x0000000000400000-0x0000000000875000-memory.dmp

memory/232-110-0x0000000000400000-0x0000000000875000-memory.dmp