Malware Analysis Report

2024-10-10 10:40

Sample ID 240609-gr7qfaef41
Target 753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1
SHA256 753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1
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

753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1

Threat Level: Known bad

The file 753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1 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

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 06:03

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-09 06:03

Reported

2024-06-09 06:06

Platform

win10v2004-20240426-en

Max time kernel

123s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.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 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-OU4UD.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3488 wrote to memory of 3924 N/A C:\Users\Admin\AppData\Local\Temp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe C:\Users\Admin\AppData\Local\Temp\is-OU4UD.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp
PID 3488 wrote to memory of 3924 N/A C:\Users\Admin\AppData\Local\Temp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe C:\Users\Admin\AppData\Local\Temp\is-OU4UD.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp
PID 3488 wrote to memory of 3924 N/A C:\Users\Admin\AppData\Local\Temp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe C:\Users\Admin\AppData\Local\Temp\is-OU4UD.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp
PID 3924 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\is-OU4UD.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 3924 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\is-OU4UD.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 3924 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\is-OU4UD.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 3924 wrote to memory of 4340 N/A C:\Users\Admin\AppData\Local\Temp\is-OU4UD.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 3924 wrote to memory of 4340 N/A C:\Users\Admin\AppData\Local\Temp\is-OU4UD.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 3924 wrote to memory of 4340 N/A C:\Users\Admin\AppData\Local\Temp\is-OU4UD.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe

Processes

C:\Users\Admin\AppData\Local\Temp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe

"C:\Users\Admin\AppData\Local\Temp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe"

C:\Users\Admin\AppData\Local\Temp\is-OU4UD.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp

"C:\Users\Admin\AppData\Local\Temp\is-OU4UD.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp" /SL5="$601DA,4587786,54272,C:\Users\Admin\AppData\Local\Temp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.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 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
RU 152.89.198.214:53 bhyvbng.com udp
BG 93.123.39.193:80 bhyvbng.com tcp
US 8.8.8.8:53 214.198.89.152.in-addr.arpa udp
US 8.8.8.8:53 193.39.123.93.in-addr.arpa udp
US 8.8.8.8:53 58.189.79.40.in-addr.arpa udp

Files

memory/3488-2-0x0000000000401000-0x000000000040B000-memory.dmp

memory/3488-0-0x0000000000400000-0x0000000000414000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-OU4UD.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp

MD5 94ebd7c7c5adcf2267929fba503116d5
SHA1 e7bd7046fc47d6d80e6817580fcd5aff9e198828
SHA256 f9af6cca41dec59fbcd3a34f5b5f896d426d8aa174398bfd6be6020e10c8f7ed
SHA512 de6874a3a0ab12aad2713c6363b561e4a709766ce4e139bba91fd420b6151254c8b1451a8d368f3dba076d639f53cd7e7860ede9c192a2e71c11c310afc6daad

memory/3924-10-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-7H1I2.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

MD5 40b6b101e2ae979a0040133ace3f9829
SHA1 cbd72391ec7fb36a909e1ea05fd9b86e495eaa19
SHA256 3c58baf2a4d86e869276e5e69cdacb60389ac9a622b213d0fefe2344d1cf1b4c
SHA512 62a74607e3be3bd6081e219e9658517c6af10cb45877c7e24790543cb1a743746c8143685a0d49371d0e8a9c652497eb06093d7ba40d30db6f18d0bcab9301f8

memory/4756-59-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4756-60-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4756-64-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4340-68-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4340-67-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4756-63-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/3488-69-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3924-70-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/4340-71-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4340-74-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4340-75-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4340-78-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4340-81-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4340-84-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4340-89-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4340-86-0x00000000007C0000-0x0000000000862000-memory.dmp

memory/4340-94-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4340-97-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4340-100-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4340-103-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4340-106-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4340-109-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4340-113-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4340-116-0x0000000000400000-0x00000000006A7000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-09 06:03

Reported

2024-06-09 06:06

Platform

win11-20240426-en

Max time kernel

123s

Max time network

129s

Command Line

"C:\Users\Admin\AppData\Local\Temp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.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 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-2S0ON.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3516 wrote to memory of 2200 N/A C:\Users\Admin\AppData\Local\Temp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe C:\Users\Admin\AppData\Local\Temp\is-2S0ON.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp
PID 3516 wrote to memory of 2200 N/A C:\Users\Admin\AppData\Local\Temp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe C:\Users\Admin\AppData\Local\Temp\is-2S0ON.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp
PID 3516 wrote to memory of 2200 N/A C:\Users\Admin\AppData\Local\Temp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe C:\Users\Admin\AppData\Local\Temp\is-2S0ON.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp
PID 2200 wrote to memory of 1700 N/A C:\Users\Admin\AppData\Local\Temp\is-2S0ON.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 2200 wrote to memory of 1700 N/A C:\Users\Admin\AppData\Local\Temp\is-2S0ON.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 2200 wrote to memory of 1700 N/A C:\Users\Admin\AppData\Local\Temp\is-2S0ON.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 2200 wrote to memory of 4348 N/A C:\Users\Admin\AppData\Local\Temp\is-2S0ON.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 2200 wrote to memory of 4348 N/A C:\Users\Admin\AppData\Local\Temp\is-2S0ON.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
PID 2200 wrote to memory of 4348 N/A C:\Users\Admin\AppData\Local\Temp\is-2S0ON.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe

Processes

C:\Users\Admin\AppData\Local\Temp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe

"C:\Users\Admin\AppData\Local\Temp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe"

C:\Users\Admin\AppData\Local\Temp\is-2S0ON.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp

"C:\Users\Admin\AppData\Local\Temp\is-2S0ON.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp" /SL5="$4021C,4587786,54272,C:\Users\Admin\AppData\Local\Temp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.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
IE 52.111.236.21:443 tcp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
HK 141.98.234.31:53 butduaj.com udp
BG 93.123.39.193:80 butduaj.com tcp

Files

memory/3516-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3516-2-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-2S0ON.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp

MD5 94ebd7c7c5adcf2267929fba503116d5
SHA1 e7bd7046fc47d6d80e6817580fcd5aff9e198828
SHA256 f9af6cca41dec59fbcd3a34f5b5f896d426d8aa174398bfd6be6020e10c8f7ed
SHA512 de6874a3a0ab12aad2713c6363b561e4a709766ce4e139bba91fd420b6151254c8b1451a8d368f3dba076d639f53cd7e7860ede9c192a2e71c11c310afc6daad

memory/2200-10-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-G68K2.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

MD5 40b6b101e2ae979a0040133ace3f9829
SHA1 cbd72391ec7fb36a909e1ea05fd9b86e495eaa19
SHA256 3c58baf2a4d86e869276e5e69cdacb60389ac9a622b213d0fefe2344d1cf1b4c
SHA512 62a74607e3be3bd6081e219e9658517c6af10cb45877c7e24790543cb1a743746c8143685a0d49371d0e8a9c652497eb06093d7ba40d30db6f18d0bcab9301f8

memory/1700-60-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/1700-63-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4348-68-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/1700-65-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/1700-59-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/3516-69-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2200-70-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/4348-71-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4348-74-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4348-75-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4348-78-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4348-81-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4348-84-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4348-89-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4348-86-0x00000000009B0000-0x0000000000A52000-memory.dmp

memory/4348-94-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4348-97-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4348-100-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4348-103-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4348-106-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4348-109-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4348-113-0x0000000000400000-0x00000000006A7000-memory.dmp

memory/4348-116-0x0000000000400000-0x00000000006A7000-memory.dmp