Malware Analysis Report

2024-11-15 05:01

Sample ID 240530-rz1l7sbh2t
Target 73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86
SHA256 73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86
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

73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86

Threat Level: Known bad

The file 73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86 was found to be: Known bad.

Malicious Activity Summary

socks5systemz botnet discovery

Socks5Systemz

Detect Socks5Systemz Payload

Unexpected DNS network traffic destination

Executes dropped EXE

Loads dropped DLL

Checks installed software on the system

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-30 14:38

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-30 14:38

Reported

2024-05-30 14:41

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.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 FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-D7KJL.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4632 wrote to memory of 1500 N/A C:\Users\Admin\AppData\Local\Temp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.exe C:\Users\Admin\AppData\Local\Temp\is-D7KJL.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp
PID 4632 wrote to memory of 1500 N/A C:\Users\Admin\AppData\Local\Temp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.exe C:\Users\Admin\AppData\Local\Temp\is-D7KJL.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp
PID 4632 wrote to memory of 1500 N/A C:\Users\Admin\AppData\Local\Temp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.exe C:\Users\Admin\AppData\Local\Temp\is-D7KJL.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp
PID 1500 wrote to memory of 4276 N/A C:\Users\Admin\AppData\Local\Temp\is-D7KJL.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 1500 wrote to memory of 4276 N/A C:\Users\Admin\AppData\Local\Temp\is-D7KJL.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 1500 wrote to memory of 4276 N/A C:\Users\Admin\AppData\Local\Temp\is-D7KJL.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 1500 wrote to memory of 1692 N/A C:\Users\Admin\AppData\Local\Temp\is-D7KJL.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 1500 wrote to memory of 1692 N/A C:\Users\Admin\AppData\Local\Temp\is-D7KJL.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 1500 wrote to memory of 1692 N/A C:\Users\Admin\AppData\Local\Temp\is-D7KJL.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.exe

"C:\Users\Admin\AppData\Local\Temp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.exe"

C:\Users\Admin\AppData\Local\Temp\is-D7KJL.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp

"C:\Users\Admin\AppData\Local\Temp\is-D7KJL.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp" /SL5="$90066,4741370,54272,C:\Users\Admin\AppData\Local\Temp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.exe"

C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

"C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -i

C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

"C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -s

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.121:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
NL 23.62.61.138:443 www.bing.com tcp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 121.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 138.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.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 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.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 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
RU 152.89.198.214:53 ddltuik.info udp
US 8.8.8.8:53 214.198.89.152.in-addr.arpa udp
BG 79.110.49.184:80 ddltuik.info tcp
NL 79.132.128.125:2023 tcp
US 8.8.8.8:53 125.128.132.79.in-addr.arpa udp
US 8.8.8.8:53 184.49.110.79.in-addr.arpa udp
US 8.8.8.8:53 31.73.42.20.in-addr.arpa udp

Files

memory/4632-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4632-3-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-D7KJL.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp

MD5 281b7192d7fae9f9f4f11ad30842bfaa
SHA1 35ca07cc4d95c2132eb31152974417ba96e51d43
SHA256 fca779fea2596da2a6f434cc9df9e6b44d1c176668b5c80bd76c00e91e478a4c
SHA512 a63c9a298974c93dc4eb02e360d45db077f16a6921ac42bedb59a9fe46156fb50f46cb109d97ded3039300d3e38f4370bda0665b1013b3e662c6aec927635ef2

memory/1500-12-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-88T2F.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

MD5 53eda1ebe9a77073ee7f0769f3065f63
SHA1 7599a89cbb70b20eb1e37c3a89147d7667a93af0
SHA256 60415657df6dacf7dcd2dd30096039baf2501cdbfc07610207315f27712c6d51
SHA512 a712a58591246f34b3a723e3848b012434631d1c732e82ef86a1e801af299f8f65e22458b29e0cd8a74b3dc46f4af359e4d5fdf44a2070e2f59d1a4fecc6ee67

memory/4276-59-0x0000000000400000-0x0000000000745000-memory.dmp

memory/4276-63-0x0000000000400000-0x0000000000745000-memory.dmp

memory/4276-60-0x0000000000400000-0x0000000000745000-memory.dmp

memory/4276-65-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1692-68-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1692-69-0x0000000000400000-0x0000000000745000-memory.dmp

memory/4632-70-0x0000000000400000-0x0000000000414000-memory.dmp

memory/1500-71-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/1692-72-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1692-75-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1692-76-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1692-79-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1692-82-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1692-85-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1692-88-0x00000000008A0000-0x0000000000942000-memory.dmp

memory/1692-90-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1692-96-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1692-99-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1692-102-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1692-105-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1692-108-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1692-111-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1692-112-0x00000000008A0000-0x0000000000942000-memory.dmp

memory/1692-113-0x00000000008A0000-0x0000000000942000-memory.dmp

memory/1692-117-0x0000000000400000-0x0000000000745000-memory.dmp

memory/1692-120-0x0000000000400000-0x0000000000745000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-30 14:38

Reported

2024-05-30 14:41

Platform

win11-20240426-en

Max time kernel

141s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.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 FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-S0AFH.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2240 wrote to memory of 3172 N/A C:\Users\Admin\AppData\Local\Temp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.exe C:\Users\Admin\AppData\Local\Temp\is-S0AFH.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp
PID 2240 wrote to memory of 3172 N/A C:\Users\Admin\AppData\Local\Temp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.exe C:\Users\Admin\AppData\Local\Temp\is-S0AFH.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp
PID 2240 wrote to memory of 3172 N/A C:\Users\Admin\AppData\Local\Temp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.exe C:\Users\Admin\AppData\Local\Temp\is-S0AFH.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp
PID 3172 wrote to memory of 3756 N/A C:\Users\Admin\AppData\Local\Temp\is-S0AFH.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 3172 wrote to memory of 3756 N/A C:\Users\Admin\AppData\Local\Temp\is-S0AFH.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 3172 wrote to memory of 3756 N/A C:\Users\Admin\AppData\Local\Temp\is-S0AFH.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 3172 wrote to memory of 3512 N/A C:\Users\Admin\AppData\Local\Temp\is-S0AFH.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 3172 wrote to memory of 3512 N/A C:\Users\Admin\AppData\Local\Temp\is-S0AFH.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 3172 wrote to memory of 3512 N/A C:\Users\Admin\AppData\Local\Temp\is-S0AFH.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.exe

"C:\Users\Admin\AppData\Local\Temp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.exe"

C:\Users\Admin\AppData\Local\Temp\is-S0AFH.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp

"C:\Users\Admin\AppData\Local\Temp\is-S0AFH.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp" /SL5="$50072,4741370,54272,C:\Users\Admin\AppData\Local\Temp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.exe"

C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

"C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -i

C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

"C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -s

Network

Country Destination Domain Proto
RU 152.89.198.214:53 befibuu.com udp
BG 79.110.49.184:80 befibuu.com tcp
RO 45.11.181.104:2023 tcp
US 8.8.8.8:53 214.198.89.152.in-addr.arpa udp
US 8.8.8.8:53 184.49.110.79.in-addr.arpa udp
US 8.8.8.8:53 104.181.11.45.in-addr.arpa udp

Files

memory/2240-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2240-2-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-S0AFH.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp

MD5 281b7192d7fae9f9f4f11ad30842bfaa
SHA1 35ca07cc4d95c2132eb31152974417ba96e51d43
SHA256 fca779fea2596da2a6f434cc9df9e6b44d1c176668b5c80bd76c00e91e478a4c
SHA512 a63c9a298974c93dc4eb02e360d45db077f16a6921ac42bedb59a9fe46156fb50f46cb109d97ded3039300d3e38f4370bda0665b1013b3e662c6aec927635ef2

memory/3172-12-0x0000000000400000-0x00000000004BA000-memory.dmp

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

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

MD5 53eda1ebe9a77073ee7f0769f3065f63
SHA1 7599a89cbb70b20eb1e37c3a89147d7667a93af0
SHA256 60415657df6dacf7dcd2dd30096039baf2501cdbfc07610207315f27712c6d51
SHA512 a712a58591246f34b3a723e3848b012434631d1c732e82ef86a1e801af299f8f65e22458b29e0cd8a74b3dc46f4af359e4d5fdf44a2070e2f59d1a4fecc6ee67

memory/3756-60-0x0000000000400000-0x0000000000745000-memory.dmp

memory/3756-59-0x0000000000400000-0x0000000000745000-memory.dmp

memory/3756-65-0x0000000000400000-0x0000000000745000-memory.dmp

memory/3756-64-0x0000000000400000-0x0000000000745000-memory.dmp

memory/3512-68-0x0000000000400000-0x0000000000745000-memory.dmp

memory/2240-69-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3172-70-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/3512-71-0x0000000000400000-0x0000000000745000-memory.dmp

memory/3512-74-0x0000000000400000-0x0000000000745000-memory.dmp

memory/3512-77-0x0000000000400000-0x0000000000745000-memory.dmp

memory/3512-80-0x0000000000400000-0x0000000000745000-memory.dmp

memory/3512-83-0x0000000000400000-0x0000000000745000-memory.dmp

memory/3512-84-0x0000000002510000-0x00000000025B2000-memory.dmp

memory/3512-89-0x0000000000400000-0x0000000000745000-memory.dmp

memory/3512-94-0x0000000000400000-0x0000000000745000-memory.dmp

memory/3512-97-0x0000000000400000-0x0000000000745000-memory.dmp

memory/3512-100-0x0000000000400000-0x0000000000745000-memory.dmp

memory/3512-103-0x0000000000400000-0x0000000000745000-memory.dmp

memory/3512-106-0x0000000000400000-0x0000000000745000-memory.dmp

memory/3512-109-0x0000000000400000-0x0000000000745000-memory.dmp

memory/3512-110-0x0000000002510000-0x00000000025B2000-memory.dmp

memory/3512-111-0x0000000002510000-0x00000000025B2000-memory.dmp

memory/3512-115-0x0000000000400000-0x0000000000745000-memory.dmp

memory/3512-118-0x0000000000400000-0x0000000000745000-memory.dmp