Malware Analysis Report

2024-10-10 10:40

Sample ID 240609-hw655sgb33
Target 9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72
SHA256 9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72
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

9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72

Threat Level: Known bad

The file 9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72 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

Enumerates physical storage devices

Unsigned PE

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-09 07:06

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-09 07:06

Reported

2024-06-09 07:08

Platform

win10v2004-20240426-en

Max time kernel

141s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.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 141.98.234.31 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-G5DEI.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3048 wrote to memory of 4988 N/A C:\Users\Admin\AppData\Local\Temp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.exe C:\Users\Admin\AppData\Local\Temp\is-G5DEI.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp
PID 3048 wrote to memory of 4988 N/A C:\Users\Admin\AppData\Local\Temp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.exe C:\Users\Admin\AppData\Local\Temp\is-G5DEI.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp
PID 3048 wrote to memory of 4988 N/A C:\Users\Admin\AppData\Local\Temp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.exe C:\Users\Admin\AppData\Local\Temp\is-G5DEI.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp
PID 4988 wrote to memory of 3668 N/A C:\Users\Admin\AppData\Local\Temp\is-G5DEI.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 4988 wrote to memory of 3668 N/A C:\Users\Admin\AppData\Local\Temp\is-G5DEI.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 4988 wrote to memory of 3668 N/A C:\Users\Admin\AppData\Local\Temp\is-G5DEI.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 4988 wrote to memory of 1048 N/A C:\Users\Admin\AppData\Local\Temp\is-G5DEI.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 4988 wrote to memory of 1048 N/A C:\Users\Admin\AppData\Local\Temp\is-G5DEI.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 4988 wrote to memory of 1048 N/A C:\Users\Admin\AppData\Local\Temp\is-G5DEI.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe

Processes

C:\Users\Admin\AppData\Local\Temp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.exe

"C:\Users\Admin\AppData\Local\Temp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.exe"

C:\Users\Admin\AppData\Local\Temp\is-G5DEI.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp

"C:\Users\Admin\AppData\Local\Temp\is-G5DEI.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp" /SL5="$A00A2,4592859,54272,C:\Users\Admin\AppData\Local\Temp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.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 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
HK 141.98.234.31:53 bwkeasr.com udp
BG 93.123.39.193:80 bwkeasr.com tcp
CH 176.10.111.158:2023 tcp
US 8.8.8.8:53 31.234.98.141.in-addr.arpa udp
US 8.8.8.8:53 193.39.123.93.in-addr.arpa udp
US 8.8.8.8:53 158.111.10.176.in-addr.arpa udp

Files

memory/3048-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3048-2-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-G5DEI.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp

MD5 94ebd7c7c5adcf2267929fba503116d5
SHA1 e7bd7046fc47d6d80e6817580fcd5aff9e198828
SHA256 f9af6cca41dec59fbcd3a34f5b5f896d426d8aa174398bfd6be6020e10c8f7ed
SHA512 de6874a3a0ab12aad2713c6363b561e4a709766ce4e139bba91fd420b6151254c8b1451a8d368f3dba076d639f53cd7e7860ede9c192a2e71c11c310afc6daad

C:\Users\Admin\AppData\Local\Temp\is-USIA9.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

memory/4988-16-0x0000000000400000-0x00000000004BA000-memory.dmp

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

MD5 ac1696fc666d2c09cce023776647f6d5
SHA1 c2f515f2229899232e315cadc596dace68f61969
SHA256 fed82d1c4e53f16ee8936aa53e0cf317539bfb627799c59cb62d89357da6018f
SHA512 6a45b8fedae6b82fbffee1cba1aad99818e0d9fd32f4eca1c85777aeee0854bc70bafbc279f3754418a80f36cf0f9bf9390a2ded0a570e07f323f7caf79e4300

memory/3668-59-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/3668-60-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/3668-65-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/3668-64-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/1048-68-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/3048-69-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4988-70-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/1048-71-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/1048-74-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/1048-77-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/1048-80-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/1048-83-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/1048-86-0x00000000028F0000-0x0000000002992000-memory.dmp

memory/1048-89-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/1048-94-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/1048-97-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/1048-100-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/1048-103-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/1048-106-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/1048-109-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/1048-110-0x00000000028F0000-0x0000000002992000-memory.dmp

memory/1048-111-0x00000000028F0000-0x0000000002992000-memory.dmp

memory/1048-115-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/1048-118-0x0000000000400000-0x00000000006A6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-09 07:06

Reported

2024-06-09 07:08

Platform

win11-20240419-en

Max time kernel

142s

Max time network

133s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.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 141.98.234.31 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-VF4AJ.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1628 wrote to memory of 3092 N/A C:\Users\Admin\AppData\Local\Temp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.exe C:\Users\Admin\AppData\Local\Temp\is-VF4AJ.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp
PID 1628 wrote to memory of 3092 N/A C:\Users\Admin\AppData\Local\Temp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.exe C:\Users\Admin\AppData\Local\Temp\is-VF4AJ.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp
PID 1628 wrote to memory of 3092 N/A C:\Users\Admin\AppData\Local\Temp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.exe C:\Users\Admin\AppData\Local\Temp\is-VF4AJ.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp
PID 3092 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\is-VF4AJ.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 3092 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\is-VF4AJ.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 3092 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\is-VF4AJ.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 3092 wrote to memory of 4780 N/A C:\Users\Admin\AppData\Local\Temp\is-VF4AJ.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 3092 wrote to memory of 4780 N/A C:\Users\Admin\AppData\Local\Temp\is-VF4AJ.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 3092 wrote to memory of 4780 N/A C:\Users\Admin\AppData\Local\Temp\is-VF4AJ.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe

Processes

C:\Users\Admin\AppData\Local\Temp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.exe

"C:\Users\Admin\AppData\Local\Temp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.exe"

C:\Users\Admin\AppData\Local\Temp\is-VF4AJ.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp

"C:\Users\Admin\AppData\Local\Temp\is-VF4AJ.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp" /SL5="$50070,4592859,54272,C:\Users\Admin\AppData\Local\Temp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.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
HK 141.98.234.31:53 ayicdsp.ru udp
BG 93.123.39.193:80 ayicdsp.ru tcp
CH 176.10.111.158:2023 tcp

Files

memory/1628-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/1628-2-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-VF4AJ.tmp\9c39d61a7daea8eda91dc21808377ba47f575443ba7593f298545388aa142e72.tmp

MD5 94ebd7c7c5adcf2267929fba503116d5
SHA1 e7bd7046fc47d6d80e6817580fcd5aff9e198828
SHA256 f9af6cca41dec59fbcd3a34f5b5f896d426d8aa174398bfd6be6020e10c8f7ed
SHA512 de6874a3a0ab12aad2713c6363b561e4a709766ce4e139bba91fd420b6151254c8b1451a8d368f3dba076d639f53cd7e7860ede9c192a2e71c11c310afc6daad

memory/3092-13-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-Q3K19.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

MD5 ac1696fc666d2c09cce023776647f6d5
SHA1 c2f515f2229899232e315cadc596dace68f61969
SHA256 fed82d1c4e53f16ee8936aa53e0cf317539bfb627799c59cb62d89357da6018f
SHA512 6a45b8fedae6b82fbffee1cba1aad99818e0d9fd32f4eca1c85777aeee0854bc70bafbc279f3754418a80f36cf0f9bf9390a2ded0a570e07f323f7caf79e4300

memory/2492-59-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/2492-63-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/2492-65-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/4780-67-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/2492-60-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/4780-69-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/1628-70-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3092-71-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/4780-72-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/4780-75-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/4780-76-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/4780-79-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/4780-82-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/4780-85-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/4780-88-0x0000000000A10000-0x0000000000AB2000-memory.dmp

memory/4780-91-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/4780-96-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/4780-99-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/4780-100-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/4780-103-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/4780-106-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/4780-109-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/4780-112-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/4780-113-0x0000000000A10000-0x0000000000AB2000-memory.dmp

memory/4780-114-0x0000000000A10000-0x0000000000AB2000-memory.dmp

memory/4780-118-0x0000000000400000-0x00000000006A6000-memory.dmp

memory/4780-121-0x0000000000400000-0x00000000006A6000-memory.dmp