Malware Analysis Report

2024-10-10 10:40

Sample ID 240609-e4cpqaed42
Target c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994
SHA256 c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994
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

c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994

Threat Level: Known bad

The file c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994 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 FindShellTrayWindow

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-09 04:29

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-09 04:29

Reported

2024-06-09 04:31

Platform

win10v2004-20240508-en

Max time kernel

141s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.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-FKJJQ.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2400 wrote to memory of 3396 N/A C:\Users\Admin\AppData\Local\Temp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.exe C:\Users\Admin\AppData\Local\Temp\is-FKJJQ.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp
PID 2400 wrote to memory of 3396 N/A C:\Users\Admin\AppData\Local\Temp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.exe C:\Users\Admin\AppData\Local\Temp\is-FKJJQ.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp
PID 2400 wrote to memory of 3396 N/A C:\Users\Admin\AppData\Local\Temp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.exe C:\Users\Admin\AppData\Local\Temp\is-FKJJQ.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp
PID 3396 wrote to memory of 888 N/A C:\Users\Admin\AppData\Local\Temp\is-FKJJQ.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 3396 wrote to memory of 888 N/A C:\Users\Admin\AppData\Local\Temp\is-FKJJQ.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 3396 wrote to memory of 888 N/A C:\Users\Admin\AppData\Local\Temp\is-FKJJQ.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 3396 wrote to memory of 4228 N/A C:\Users\Admin\AppData\Local\Temp\is-FKJJQ.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 3396 wrote to memory of 4228 N/A C:\Users\Admin\AppData\Local\Temp\is-FKJJQ.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 3396 wrote to memory of 4228 N/A C:\Users\Admin\AppData\Local\Temp\is-FKJJQ.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.exe

"C:\Users\Admin\AppData\Local\Temp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.exe"

C:\Users\Admin\AppData\Local\Temp\is-FKJJQ.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp

"C:\Users\Admin\AppData\Local\Temp\is-FKJJQ.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp" /SL5="$D0066,4581277,54272,C:\Users\Admin\AppData\Local\Temp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.exe"

C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe

"C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe" -i

C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe

"C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe" -s

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 52.111.229.48:443 tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
SE 45.155.250.90:53 ckergqb.net udp
BG 93.123.39.193:80 ckergqb.net tcp
NL 79.132.128.125:2023 tcp
US 8.8.8.8:53 90.250.155.45.in-addr.arpa udp
US 8.8.8.8:53 193.39.123.93.in-addr.arpa udp
US 8.8.8.8:53 125.128.132.79.in-addr.arpa udp

Files

memory/2400-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2400-2-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-FKJJQ.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp

MD5 e5c6fc27d2665f4ba98d9837652d4446
SHA1 68205e893b6b217a6b6beb921e758ee222fdd674
SHA256 b800a709dfe4e318a5160fda1fa01e2815e834bd6166e66cefa04298bce0cdbc
SHA512 f1989ea07a01b5696318e9d898f8ec4c10e846ab334ff053c58f00104a89804367f1ebd6c227033f3dd069ac311d0fe805694584e3a8152a8dc5eb23ae05dcbe

memory/3396-12-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-RJS6S.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe

MD5 8ce4111540411130233d63ca29c03d50
SHA1 d2a8711ae935250aefc156b7a6d2e9e2698b114a
SHA256 fb114d37e09d9f67d6760e46683b67f5aa0795a6c44fb38fdb654dd16c3f5d2a
SHA512 343ef30eb28c8f74ce3bcc7c1ea322fe6008e846bf808108c3b62142e5e6c6ed8460ebff06949e283e0339eff9debaa6c85b612d5749fd13554306cc345438ba

memory/888-59-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/888-60-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/888-64-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4228-67-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/2400-68-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3396-69-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/4228-70-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4228-73-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4228-76-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4228-79-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4228-82-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4228-85-0x0000000002830000-0x00000000028D2000-memory.dmp

memory/4228-88-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4228-93-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4228-96-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4228-99-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4228-102-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4228-105-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4228-108-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4228-109-0x0000000002830000-0x00000000028D2000-memory.dmp

memory/4228-110-0x0000000002830000-0x00000000028D2000-memory.dmp

memory/4228-114-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4228-117-0x0000000000400000-0x00000000006A9000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-09 04:29

Reported

2024-06-09 04:31

Platform

win11-20240508-en

Max time kernel

146s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.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

Enumerates physical storage devices

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-FC33O.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4792 wrote to memory of 2684 N/A C:\Users\Admin\AppData\Local\Temp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.exe C:\Users\Admin\AppData\Local\Temp\is-FC33O.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp
PID 4792 wrote to memory of 2684 N/A C:\Users\Admin\AppData\Local\Temp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.exe C:\Users\Admin\AppData\Local\Temp\is-FC33O.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp
PID 4792 wrote to memory of 2684 N/A C:\Users\Admin\AppData\Local\Temp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.exe C:\Users\Admin\AppData\Local\Temp\is-FC33O.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp
PID 2684 wrote to memory of 2352 N/A C:\Users\Admin\AppData\Local\Temp\is-FC33O.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 2684 wrote to memory of 2352 N/A C:\Users\Admin\AppData\Local\Temp\is-FC33O.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 2684 wrote to memory of 2352 N/A C:\Users\Admin\AppData\Local\Temp\is-FC33O.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 2684 wrote to memory of 4652 N/A C:\Users\Admin\AppData\Local\Temp\is-FC33O.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 2684 wrote to memory of 4652 N/A C:\Users\Admin\AppData\Local\Temp\is-FC33O.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 2684 wrote to memory of 4652 N/A C:\Users\Admin\AppData\Local\Temp\is-FC33O.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.exe

"C:\Users\Admin\AppData\Local\Temp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.exe"

C:\Users\Admin\AppData\Local\Temp\is-FC33O.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp

"C:\Users\Admin\AppData\Local\Temp\is-FC33O.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp" /SL5="$40244,4581277,54272,C:\Users\Admin\AppData\Local\Temp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.exe"

C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe

"C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe" -i

C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe

"C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe" -s

Network

Country Destination Domain Proto
LT 91.211.247.248:53 bgbkyjc.com udp
BG 93.123.39.193:80 bgbkyjc.com tcp
NL 79.132.128.125:2023 tcp
US 8.8.8.8:53 193.39.123.93.in-addr.arpa udp

Files

memory/4792-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4792-2-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-FC33O.tmp\c617f96fa1a4855f1fa98176cad36cc4c38e28963324788230e1a9eaf97dc994.tmp

MD5 e5c6fc27d2665f4ba98d9837652d4446
SHA1 68205e893b6b217a6b6beb921e758ee222fdd674
SHA256 b800a709dfe4e318a5160fda1fa01e2815e834bd6166e66cefa04298bce0cdbc
SHA512 f1989ea07a01b5696318e9d898f8ec4c10e846ab334ff053c58f00104a89804367f1ebd6c227033f3dd069ac311d0fe805694584e3a8152a8dc5eb23ae05dcbe

C:\Users\Admin\AppData\Local\Temp\is-S2VEV.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

memory/2684-16-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2352-59-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/2352-63-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/2352-62-0x0000000000400000-0x00000000006A9000-memory.dmp

C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe

MD5 8ce4111540411130233d63ca29c03d50
SHA1 d2a8711ae935250aefc156b7a6d2e9e2698b114a
SHA256 fb114d37e09d9f67d6760e46683b67f5aa0795a6c44fb38fdb654dd16c3f5d2a
SHA512 343ef30eb28c8f74ce3bcc7c1ea322fe6008e846bf808108c3b62142e5e6c6ed8460ebff06949e283e0339eff9debaa6c85b612d5749fd13554306cc345438ba

memory/4652-68-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/2352-65-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4792-69-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2684-70-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/4652-71-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4652-74-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4652-77-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4652-80-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4652-83-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4652-86-0x0000000002840000-0x00000000028E2000-memory.dmp

memory/4652-89-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4652-94-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4652-97-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4652-100-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4652-103-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4652-106-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4652-109-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4652-110-0x0000000002840000-0x00000000028E2000-memory.dmp

memory/4652-111-0x0000000002840000-0x00000000028E2000-memory.dmp

memory/4652-115-0x0000000000400000-0x00000000006A9000-memory.dmp

memory/4652-118-0x0000000000400000-0x00000000006A9000-memory.dmp