Malware Analysis Report

2024-11-15 04:58

Sample ID 240624-2rb9rayhrm
Target fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e
SHA256 fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e
Tags
socks5systemz botnet discovery
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e

Threat Level: Known bad

The file fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e was found to be: Known bad.

Malicious Activity Summary

socks5systemz botnet discovery

Socks5Systemz

Detect Socks5Systemz Payload

Loads dropped DLL

Executes dropped EXE

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

2024-06-24 22:48

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-24 22:48

Reported

2024-06-24 22:51

Platform

win11-20240508-en

Max time kernel

147s

Max time network

157s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.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 45.155.250.90 N/A N/A
Destination IP 91.211.247.248 N/A N/A
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-I73S1.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4308 wrote to memory of 3272 N/A C:\Users\Admin\AppData\Local\Temp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.exe C:\Users\Admin\AppData\Local\Temp\is-I73S1.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp
PID 4308 wrote to memory of 3272 N/A C:\Users\Admin\AppData\Local\Temp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.exe C:\Users\Admin\AppData\Local\Temp\is-I73S1.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp
PID 4308 wrote to memory of 3272 N/A C:\Users\Admin\AppData\Local\Temp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.exe C:\Users\Admin\AppData\Local\Temp\is-I73S1.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp
PID 3272 wrote to memory of 4676 N/A C:\Users\Admin\AppData\Local\Temp\is-I73S1.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 3272 wrote to memory of 4676 N/A C:\Users\Admin\AppData\Local\Temp\is-I73S1.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 3272 wrote to memory of 4676 N/A C:\Users\Admin\AppData\Local\Temp\is-I73S1.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 3272 wrote to memory of 2328 N/A C:\Users\Admin\AppData\Local\Temp\is-I73S1.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 3272 wrote to memory of 2328 N/A C:\Users\Admin\AppData\Local\Temp\is-I73S1.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 3272 wrote to memory of 2328 N/A C:\Users\Admin\AppData\Local\Temp\is-I73S1.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.exe

"C:\Users\Admin\AppData\Local\Temp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.exe"

C:\Users\Admin\AppData\Local\Temp\is-I73S1.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp

"C:\Users\Admin\AppData\Local\Temp\is-I73S1.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp" /SL5="$40220,4738594,54272,C:\Users\Admin\AppData\Local\Temp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.exe"

C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

"C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i

C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

"C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
SE 45.155.250.90:53 cetdwgb.net udp
US 8.8.8.8:53 90.250.155.45.in-addr.arpa udp
RU 152.89.198.214:53 cetdwgb.net udp
US 8.8.8.8:53 214.198.89.152.in-addr.arpa udp
LT 91.211.247.248:53 cetdwgb.net udp
US 8.8.8.8:53 248.247.211.91.in-addr.arpa udp

Files

memory/4308-3-0x0000000000401000-0x000000000040B000-memory.dmp

memory/4308-0-0x0000000000400000-0x0000000000414000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-I73S1.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp

MD5 b636efd5b0d9411fce26090f48666e14
SHA1 b51a5479356b513977647fd7bbbedcbba2dd3343
SHA256 9c048616826131137b7b69c0a91dbb58f045f489a52fec8019edcad465a3e683
SHA512 4758cbae518d68a5cb222e1e1e65782c6b20fdab9a83985a91ca73608211f7d19e948c3947374d5243d4ccd837f56d9b024376867e25431de7e94bdb17ccbd65

memory/3272-12-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-VPS7F.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

MD5 f500897f8f93756496247a29bfceb706
SHA1 080a9e336e98d9a9d8b70a95367d625503bac8c6
SHA256 23a5da864a27e395fd06a929f48aff41104a3e556cfe416acc5e8f0aa1d8278b
SHA512 dfa3272be116c6d2519f0d52c114cffc47d763e8cec12b134c8c21bae6edb2a26d5f206433d8a8cea9afb0609a2fa7101d58f732eeb6cba5073e378a54ad07b2

memory/4676-59-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4676-60-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4676-63-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4676-65-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/2328-67-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/2328-69-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4308-70-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3272-71-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2328-72-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/2328-75-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/2328-76-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/2328-79-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/2328-82-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/2328-85-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/2328-88-0x00000000009E0000-0x0000000000A82000-memory.dmp

memory/2328-91-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/2328-96-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/2328-99-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/2328-102-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/2328-105-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/2328-108-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/2328-111-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/2328-114-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/2328-117-0x0000000000400000-0x00000000006C8000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-24 22:48

Reported

2024-06-24 22:51

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.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
Destination IP 152.89.198.214 N/A N/A
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-B1A8V.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3008 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.exe C:\Users\Admin\AppData\Local\Temp\is-B1A8V.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp
PID 3008 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.exe C:\Users\Admin\AppData\Local\Temp\is-B1A8V.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp
PID 3008 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.exe C:\Users\Admin\AppData\Local\Temp\is-B1A8V.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp
PID 4648 wrote to memory of 4972 N/A C:\Users\Admin\AppData\Local\Temp\is-B1A8V.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4648 wrote to memory of 4972 N/A C:\Users\Admin\AppData\Local\Temp\is-B1A8V.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4648 wrote to memory of 4972 N/A C:\Users\Admin\AppData\Local\Temp\is-B1A8V.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4648 wrote to memory of 116 N/A C:\Users\Admin\AppData\Local\Temp\is-B1A8V.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4648 wrote to memory of 116 N/A C:\Users\Admin\AppData\Local\Temp\is-B1A8V.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4648 wrote to memory of 116 N/A C:\Users\Admin\AppData\Local\Temp\is-B1A8V.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.exe

"C:\Users\Admin\AppData\Local\Temp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.exe"

C:\Users\Admin\AppData\Local\Temp\is-B1A8V.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp

"C:\Users\Admin\AppData\Local\Temp\is-B1A8V.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp" /SL5="$70064,4738594,54272,C:\Users\Admin\AppData\Local\Temp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.exe"

C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

"C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i

C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

"C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
RU 152.89.198.214:53 ckdikjx.net udp
US 8.8.8.8:53 214.198.89.152.in-addr.arpa udp
RU 152.89.198.214:53 ckdikjx.net udp
LT 91.211.247.248:53 ckdikjx.net udp
US 8.8.8.8:53 248.247.211.91.in-addr.arpa udp

Files

memory/3008-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3008-3-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-B1A8V.tmp\fa18cb656c819bbbb3e28361d163228833fcaec39a173fb1d7a79559f3ce0b7e.tmp

MD5 b636efd5b0d9411fce26090f48666e14
SHA1 b51a5479356b513977647fd7bbbedcbba2dd3343
SHA256 9c048616826131137b7b69c0a91dbb58f045f489a52fec8019edcad465a3e683
SHA512 4758cbae518d68a5cb222e1e1e65782c6b20fdab9a83985a91ca73608211f7d19e948c3947374d5243d4ccd837f56d9b024376867e25431de7e94bdb17ccbd65

memory/4648-13-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-N0IS0.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

MD5 f500897f8f93756496247a29bfceb706
SHA1 080a9e336e98d9a9d8b70a95367d625503bac8c6
SHA256 23a5da864a27e395fd06a929f48aff41104a3e556cfe416acc5e8f0aa1d8278b
SHA512 dfa3272be116c6d2519f0d52c114cffc47d763e8cec12b134c8c21bae6edb2a26d5f206433d8a8cea9afb0609a2fa7101d58f732eeb6cba5073e378a54ad07b2

memory/4972-59-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4972-60-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4972-63-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4972-64-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/116-66-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/3008-68-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4648-69-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/116-70-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/116-73-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/116-76-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/116-79-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/116-82-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/116-85-0x0000000000850000-0x00000000008F2000-memory.dmp

memory/116-87-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/116-92-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/116-95-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/116-98-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/116-101-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/116-104-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/116-107-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/116-110-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/116-113-0x0000000000400000-0x00000000006C8000-memory.dmp