Malware Analysis Report

2024-11-15 04:58

Sample ID 240625-bg88masbpf
Target 4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190
SHA256 4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190
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

4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190

Threat Level: Known bad

The file 4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190 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 FindShellTrayWindow

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-25 01:08

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-25 01:08

Reported

2024-06-25 01:10

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.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 91.211.247.248 N/A N/A
Destination IP 152.89.198.214 N/A N/A
Destination IP 91.211.247.248 N/A N/A

Checks installed software on the system

discovery

Enumerates physical storage devices

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-R0URT.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3264 wrote to memory of 4592 N/A C:\Users\Admin\AppData\Local\Temp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe C:\Users\Admin\AppData\Local\Temp\is-R0URT.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp
PID 3264 wrote to memory of 4592 N/A C:\Users\Admin\AppData\Local\Temp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe C:\Users\Admin\AppData\Local\Temp\is-R0URT.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp
PID 3264 wrote to memory of 4592 N/A C:\Users\Admin\AppData\Local\Temp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe C:\Users\Admin\AppData\Local\Temp\is-R0URT.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp
PID 4592 wrote to memory of 1052 N/A C:\Users\Admin\AppData\Local\Temp\is-R0URT.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4592 wrote to memory of 1052 N/A C:\Users\Admin\AppData\Local\Temp\is-R0URT.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4592 wrote to memory of 1052 N/A C:\Users\Admin\AppData\Local\Temp\is-R0URT.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4592 wrote to memory of 336 N/A C:\Users\Admin\AppData\Local\Temp\is-R0URT.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4592 wrote to memory of 336 N/A C:\Users\Admin\AppData\Local\Temp\is-R0URT.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4592 wrote to memory of 336 N/A C:\Users\Admin\AppData\Local\Temp\is-R0URT.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe

"C:\Users\Admin\AppData\Local\Temp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe"

C:\Users\Admin\AppData\Local\Temp\is-R0URT.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp

"C:\Users\Admin\AppData\Local\Temp\is-R0URT.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp" /SL5="$501EC,4931557,54272,C:\Users\Admin\AppData\Local\Temp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe"

C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

"C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i

C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

"C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s

Network

Country Destination Domain Proto
LT 91.211.247.248:53 bhzcomo.com udp
US 8.8.8.8:53 248.247.211.91.in-addr.arpa udp
RU 152.89.198.214:53 bhzcomo.com udp
US 8.8.8.8:53 79.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 214.198.89.152.in-addr.arpa udp
LT 91.211.247.248:53 bhzcomo.com udp

Files

memory/3264-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3264-2-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-R0URT.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp

MD5 c21e34336a7bd754b707115a82c1de90
SHA1 7ddee1b6647213e4379f34032981de74848c1c8c
SHA256 eb22af283ec53600b6138441900f0e28afeaf57d5ebe3cef7948a74f657660d1
SHA512 4c197f6ddb22ddac8271c63221ca443c65eb325a50c908c892c84b743041aa94a9c43c2991dfc82a2caa1e419ffea4e120dadd6386be324169fc470c8f52ba04

memory/4592-12-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-M27AN.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

MD5 1d0923d32c61776df2c362d70a79c8f9
SHA1 027602bf74fdf47b4a672fb2d4f3d37e10ee31d5
SHA256 b3868502f32392cddabce456346d7f2391bb9f58a2d38f4730d71746d644c4a6
SHA512 efd5804edeb39665aaeb825d1dc2701ce70419a812964806dd0e7d69b47face1a7e5906be818df0ff406f740bce9f7cc34e77e62122535d0b6eadbad17fd719b

memory/1052-59-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1052-60-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1052-63-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1052-65-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/336-67-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/3264-69-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4592-70-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/336-71-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/336-74-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/336-77-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/336-80-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/336-83-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/336-86-0x00000000009F0000-0x0000000000A92000-memory.dmp

memory/336-88-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/336-93-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/336-96-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/336-99-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/336-102-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/336-105-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/336-108-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/336-111-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/336-114-0x0000000000400000-0x00000000006FA000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-25 01:08

Reported

2024-06-25 01:10

Platform

win11-20240508-en

Max time kernel

146s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.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 45.155.250.90 N/A N/A

Checks installed software on the system

discovery

Enumerates physical storage devices

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-37BEL.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4072 wrote to memory of 536 N/A C:\Users\Admin\AppData\Local\Temp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe C:\Users\Admin\AppData\Local\Temp\is-37BEL.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp
PID 4072 wrote to memory of 536 N/A C:\Users\Admin\AppData\Local\Temp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe C:\Users\Admin\AppData\Local\Temp\is-37BEL.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp
PID 4072 wrote to memory of 536 N/A C:\Users\Admin\AppData\Local\Temp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe C:\Users\Admin\AppData\Local\Temp\is-37BEL.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp
PID 536 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\is-37BEL.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 536 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\is-37BEL.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 536 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\is-37BEL.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 536 wrote to memory of 1140 N/A C:\Users\Admin\AppData\Local\Temp\is-37BEL.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 536 wrote to memory of 1140 N/A C:\Users\Admin\AppData\Local\Temp\is-37BEL.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 536 wrote to memory of 1140 N/A C:\Users\Admin\AppData\Local\Temp\is-37BEL.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe

"C:\Users\Admin\AppData\Local\Temp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe"

C:\Users\Admin\AppData\Local\Temp\is-37BEL.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp

"C:\Users\Admin\AppData\Local\Temp\is-37BEL.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp" /SL5="$5006A,4931557,54272,C:\Users\Admin\AppData\Local\Temp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe"

C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

"C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i

C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

"C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s

Network

Country Destination Domain Proto
SE 45.155.250.90:53 cccutzd.net udp
TR 94.156.8.80:80 cccutzd.net tcp
NL 89.105.201.183:2023 tcp
US 8.8.8.8:53 80.8.156.94.in-addr.arpa udp
US 8.8.8.8:53 183.201.105.89.in-addr.arpa udp

Files

memory/4072-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4072-3-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-37BEL.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp

MD5 c21e34336a7bd754b707115a82c1de90
SHA1 7ddee1b6647213e4379f34032981de74848c1c8c
SHA256 eb22af283ec53600b6138441900f0e28afeaf57d5ebe3cef7948a74f657660d1
SHA512 4c197f6ddb22ddac8271c63221ca443c65eb325a50c908c892c84b743041aa94a9c43c2991dfc82a2caa1e419ffea4e120dadd6386be324169fc470c8f52ba04

memory/536-12-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-VS3LR.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

MD5 1d0923d32c61776df2c362d70a79c8f9
SHA1 027602bf74fdf47b4a672fb2d4f3d37e10ee31d5
SHA256 b3868502f32392cddabce456346d7f2391bb9f58a2d38f4730d71746d644c4a6
SHA512 efd5804edeb39665aaeb825d1dc2701ce70419a812964806dd0e7d69b47face1a7e5906be818df0ff406f740bce9f7cc34e77e62122535d0b6eadbad17fd719b

memory/1948-60-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1948-59-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1948-64-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1948-65-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1140-67-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1140-69-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/4072-70-0x0000000000400000-0x0000000000414000-memory.dmp

memory/536-71-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/1140-72-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1140-75-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1140-76-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1140-79-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1140-82-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1140-85-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1140-87-0x0000000000A80000-0x0000000000B22000-memory.dmp

memory/1140-91-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1140-96-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1140-99-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1140-102-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1140-105-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1140-108-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1140-111-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1140-112-0x0000000000A80000-0x0000000000B22000-memory.dmp

memory/1140-113-0x0000000000A80000-0x0000000000B22000-memory.dmp

memory/1140-117-0x0000000000400000-0x00000000006FA000-memory.dmp

memory/1140-120-0x0000000000400000-0x00000000006FA000-memory.dmp