Malware Analysis Report

2024-10-10 10:39

Sample ID 240615-l4xs8azfkq
Target bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1
SHA256 bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1
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

bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1

Threat Level: Known bad

The file bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1 was found to be: Known bad.

Malicious Activity Summary

socks5systemz botnet discovery

Detect Socks5Systemz Payload

Socks5Systemz

Loads dropped DLL

Executes dropped EXE

Unexpected DNS network traffic destination

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

2024-06-15 10:05

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-15 10:05

Reported

2024-06-15 10:08

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.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 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-V5V2K.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 408 wrote to memory of 1732 N/A C:\Users\Admin\AppData\Local\Temp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.exe C:\Users\Admin\AppData\Local\Temp\is-V5V2K.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp
PID 408 wrote to memory of 1732 N/A C:\Users\Admin\AppData\Local\Temp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.exe C:\Users\Admin\AppData\Local\Temp\is-V5V2K.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp
PID 408 wrote to memory of 1732 N/A C:\Users\Admin\AppData\Local\Temp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.exe C:\Users\Admin\AppData\Local\Temp\is-V5V2K.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp
PID 1732 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\is-V5V2K.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe
PID 1732 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\is-V5V2K.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe
PID 1732 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\is-V5V2K.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe
PID 1732 wrote to memory of 1288 N/A C:\Users\Admin\AppData\Local\Temp\is-V5V2K.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe
PID 1732 wrote to memory of 1288 N/A C:\Users\Admin\AppData\Local\Temp\is-V5V2K.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe
PID 1732 wrote to memory of 1288 N/A C:\Users\Admin\AppData\Local\Temp\is-V5V2K.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe

Processes

C:\Users\Admin\AppData\Local\Temp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.exe

"C:\Users\Admin\AppData\Local\Temp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.exe"

C:\Users\Admin\AppData\Local\Temp\is-V5V2K.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp

"C:\Users\Admin\AppData\Local\Temp\is-V5V2K.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp" /SL5="$601E6,5869761,54272,C:\Users\Admin\AppData\Local\Temp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.exe"

C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe

"C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe" -i

C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe

"C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe" -s

Network

Country Destination Domain Proto
HK 141.98.234.31:53 bfstutw.com udp
US 8.8.8.8:53 31.234.98.141.in-addr.arpa udp
RU 152.89.198.214:53 bfstutw.com udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 214.198.89.152.in-addr.arpa udp
LT 91.211.247.248:53 bfstutw.com udp
US 8.8.8.8:53 248.247.211.91.in-addr.arpa udp

Files

memory/408-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/408-3-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-V5V2K.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp

MD5 548dec969992f3e928d7c5bcf6dbeccf
SHA1 f4da2c90b95749fbb89e1a16f55719078cb128aa
SHA256 9a883c56e3cd5e476c9baa539c1b5d0e877dfade2714040c84ed5f098665b768
SHA512 e3980bb2bc9a9146c37bae8c60e80bc5fa164cd767fad3c046046d1517ca24780191ab98526bc94392d6a55fa486ef77857359eadef0466c6abf2b42dcec4321

C:\Users\Admin\AppData\Local\Temp\is-RUVHR.tmp\_isetup\_isdecmp.dll

MD5 a813d18268affd4763dde940246dc7e5
SHA1 c7366e1fd925c17cc6068001bd38eaef5b42852f
SHA256 e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64
SHA512 b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

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

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

memory/1732-15-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe

MD5 974765bc3d4d6ac2b204f22eaa7b9a8d
SHA1 b160d0e980e7ef0e90ff4130dbd8524db7aeccc0
SHA256 3e1428c10fbdb3330ec1e9a0510d4a3b1228f8780403d5aa36376d92c60a1fab
SHA512 e72a1d9ed0c7402df5a90b484033810c5ec831c92b89f9e7cf358dad48242023ca9623c73fd980d0afb9efb7461d158932895d42450d5151f295920de7c7b5ae

memory/2252-65-0x0000000000400000-0x0000000000736000-memory.dmp

memory/2252-66-0x0000000000400000-0x0000000000736000-memory.dmp

memory/2252-69-0x0000000000400000-0x0000000000736000-memory.dmp

memory/1288-72-0x0000000000400000-0x0000000000736000-memory.dmp

memory/1288-74-0x0000000000400000-0x0000000000736000-memory.dmp

memory/408-75-0x0000000000400000-0x0000000000414000-memory.dmp

memory/1732-76-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/1288-77-0x0000000000400000-0x0000000000736000-memory.dmp

memory/1288-80-0x0000000000400000-0x0000000000736000-memory.dmp

memory/1288-81-0x0000000000400000-0x0000000000736000-memory.dmp

memory/1288-84-0x0000000000400000-0x0000000000736000-memory.dmp

memory/1288-87-0x0000000000400000-0x0000000000736000-memory.dmp

memory/1288-90-0x0000000000400000-0x0000000000736000-memory.dmp

memory/1288-93-0x00000000009C0000-0x0000000000A62000-memory.dmp

memory/1288-97-0x0000000000400000-0x0000000000736000-memory.dmp

memory/1288-100-0x0000000000400000-0x0000000000736000-memory.dmp

memory/1288-103-0x0000000000400000-0x0000000000736000-memory.dmp

memory/1288-106-0x0000000000400000-0x0000000000736000-memory.dmp

memory/1288-109-0x0000000000400000-0x0000000000736000-memory.dmp

memory/1288-112-0x0000000000400000-0x0000000000736000-memory.dmp

memory/1288-115-0x0000000000400000-0x0000000000736000-memory.dmp

memory/1288-118-0x0000000000400000-0x0000000000736000-memory.dmp

memory/1288-121-0x0000000000400000-0x0000000000736000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-15 10:05

Reported

2024-06-15 10:08

Platform

win11-20240611-en

Max time kernel

141s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.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-R8SPR.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2192 wrote to memory of 3532 N/A C:\Users\Admin\AppData\Local\Temp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.exe C:\Users\Admin\AppData\Local\Temp\is-R8SPR.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp
PID 2192 wrote to memory of 3532 N/A C:\Users\Admin\AppData\Local\Temp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.exe C:\Users\Admin\AppData\Local\Temp\is-R8SPR.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp
PID 2192 wrote to memory of 3532 N/A C:\Users\Admin\AppData\Local\Temp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.exe C:\Users\Admin\AppData\Local\Temp\is-R8SPR.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp
PID 3532 wrote to memory of 2876 N/A C:\Users\Admin\AppData\Local\Temp\is-R8SPR.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe
PID 3532 wrote to memory of 2876 N/A C:\Users\Admin\AppData\Local\Temp\is-R8SPR.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe
PID 3532 wrote to memory of 2876 N/A C:\Users\Admin\AppData\Local\Temp\is-R8SPR.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe
PID 3532 wrote to memory of 484 N/A C:\Users\Admin\AppData\Local\Temp\is-R8SPR.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe
PID 3532 wrote to memory of 484 N/A C:\Users\Admin\AppData\Local\Temp\is-R8SPR.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe
PID 3532 wrote to memory of 484 N/A C:\Users\Admin\AppData\Local\Temp\is-R8SPR.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe

Processes

C:\Users\Admin\AppData\Local\Temp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.exe

"C:\Users\Admin\AppData\Local\Temp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.exe"

C:\Users\Admin\AppData\Local\Temp\is-R8SPR.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp

"C:\Users\Admin\AppData\Local\Temp\is-R8SPR.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp" /SL5="$4023A,5869761,54272,C:\Users\Admin\AppData\Local\Temp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.exe"

C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe

"C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe" -i

C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe

"C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.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 23.159.190.20.in-addr.arpa udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
HK 141.98.234.31:53 ayyxvry.ru udp
TR 94.156.8.80:80 ayyxvry.ru tcp
BG 194.59.31.219:2023 tcp

Files

memory/2192-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2192-3-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-R8SPR.tmp\bf2157be0fb0f233aaf578ec7befd8a7f5f81251d339aef1624c7253611e4cb1.tmp

MD5 548dec969992f3e928d7c5bcf6dbeccf
SHA1 f4da2c90b95749fbb89e1a16f55719078cb128aa
SHA256 9a883c56e3cd5e476c9baa539c1b5d0e877dfade2714040c84ed5f098665b768
SHA512 e3980bb2bc9a9146c37bae8c60e80bc5fa164cd767fad3c046046d1517ca24780191ab98526bc94392d6a55fa486ef77857359eadef0466c6abf2b42dcec4321

memory/3532-13-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-8RL58.tmp\_isetup\_isdecmp.dll

MD5 a813d18268affd4763dde940246dc7e5
SHA1 c7366e1fd925c17cc6068001bd38eaef5b42852f
SHA256 e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64
SHA512 b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

C:\Users\Admin\AppData\Local\Temp\is-8RL58.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe

MD5 974765bc3d4d6ac2b204f22eaa7b9a8d
SHA1 b160d0e980e7ef0e90ff4130dbd8524db7aeccc0
SHA256 3e1428c10fbdb3330ec1e9a0510d4a3b1228f8780403d5aa36376d92c60a1fab
SHA512 e72a1d9ed0c7402df5a90b484033810c5ec831c92b89f9e7cf358dad48242023ca9623c73fd980d0afb9efb7461d158932895d42450d5151f295920de7c7b5ae

memory/2876-66-0x0000000000400000-0x0000000000736000-memory.dmp

memory/2876-65-0x0000000000400000-0x0000000000736000-memory.dmp

memory/2876-70-0x0000000000400000-0x0000000000736000-memory.dmp

memory/2876-71-0x0000000000400000-0x0000000000736000-memory.dmp

memory/484-74-0x0000000000400000-0x0000000000736000-memory.dmp

memory/484-75-0x0000000000400000-0x0000000000736000-memory.dmp

memory/2192-76-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3532-77-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/484-78-0x0000000000400000-0x0000000000736000-memory.dmp

memory/484-81-0x0000000000400000-0x0000000000736000-memory.dmp

memory/484-84-0x0000000000400000-0x0000000000736000-memory.dmp

memory/484-87-0x0000000000400000-0x0000000000736000-memory.dmp

memory/484-90-0x0000000000400000-0x0000000000736000-memory.dmp

memory/484-92-0x00000000029A0000-0x0000000002A42000-memory.dmp

memory/484-96-0x0000000000400000-0x0000000000736000-memory.dmp

memory/484-101-0x0000000000400000-0x0000000000736000-memory.dmp

memory/484-104-0x0000000000400000-0x0000000000736000-memory.dmp

memory/484-107-0x0000000000400000-0x0000000000736000-memory.dmp

memory/484-110-0x0000000000400000-0x0000000000736000-memory.dmp

memory/484-113-0x0000000000400000-0x0000000000736000-memory.dmp

memory/484-116-0x0000000000400000-0x0000000000736000-memory.dmp

memory/484-117-0x00000000029A0000-0x0000000002A42000-memory.dmp

memory/484-118-0x00000000029A0000-0x0000000002A42000-memory.dmp

memory/484-122-0x0000000000400000-0x0000000000736000-memory.dmp

memory/484-125-0x0000000000400000-0x0000000000736000-memory.dmp