Malware Analysis Report

2024-11-15 04:58

Sample ID 240624-17pz4sxgqk
Target 38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355
SHA256 38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355
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

38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355

Threat Level: Known bad

The file 38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355 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

2024-06-24 22:17

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-24 22:17

Reported

2024-06-24 22:20

Platform

win10v2004-20240508-en

Max time kernel

142s

Max time network

136s

Command Line

"C:\Users\Admin\AppData\Local\Temp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.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-F6DRH.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 540 wrote to memory of 4504 N/A C:\Users\Admin\AppData\Local\Temp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe C:\Users\Admin\AppData\Local\Temp\is-F6DRH.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp
PID 540 wrote to memory of 4504 N/A C:\Users\Admin\AppData\Local\Temp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe C:\Users\Admin\AppData\Local\Temp\is-F6DRH.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp
PID 540 wrote to memory of 4504 N/A C:\Users\Admin\AppData\Local\Temp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe C:\Users\Admin\AppData\Local\Temp\is-F6DRH.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp
PID 4504 wrote to memory of 1256 N/A C:\Users\Admin\AppData\Local\Temp\is-F6DRH.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4504 wrote to memory of 1256 N/A C:\Users\Admin\AppData\Local\Temp\is-F6DRH.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4504 wrote to memory of 1256 N/A C:\Users\Admin\AppData\Local\Temp\is-F6DRH.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4504 wrote to memory of 3988 N/A C:\Users\Admin\AppData\Local\Temp\is-F6DRH.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4504 wrote to memory of 3988 N/A C:\Users\Admin\AppData\Local\Temp\is-F6DRH.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4504 wrote to memory of 3988 N/A C:\Users\Admin\AppData\Local\Temp\is-F6DRH.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe

"C:\Users\Admin\AppData\Local\Temp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe"

C:\Users\Admin\AppData\Local\Temp\is-F6DRH.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp

"C:\Users\Admin\AppData\Local\Temp\is-F6DRH.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp" /SL5="$80060,4722858,54272,C:\Users\Admin\AppData\Local\Temp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.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

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=1424,i,6576818814118437872,11004518367271063231,262144 --variations-seed-version --mojo-platform-channel-handle=3948 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 32.251.17.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
SE 45.155.250.90:53 boifiyj.com udp
TR 94.156.8.80:80 boifiyj.com tcp
NL 89.105.201.183:2023 tcp
US 8.8.8.8:53 90.250.155.45.in-addr.arpa udp
US 8.8.8.8:53 80.8.156.94.in-addr.arpa udp
US 8.8.8.8:53 183.201.105.89.in-addr.arpa udp

Files

memory/540-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/540-3-0x00007FFEBB2B0000-0x00007FFEBB4A5000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-F6DRH.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp

MD5 58a22210313f4658cd89a8b89fbe724d
SHA1 64564a394418bd0d993cc97c53250bfcee405365
SHA256 710a06d600279fe3e2648eac534811fd8445b79714a7970eefb4bfe19b48e5c9
SHA512 a7c2c934cd9f99230600bd25078fc5997ac45bf08acdd9cdd3785d3eb0448dfc4fd6b2ae4ca609eb82922b49e4c33bfe88285bccc8de01202b13d1bc36dcebdf

C:\Users\Admin\AppData\Local\Temp\is-6759B.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

memory/4504-16-0x00007FFEBB2B0000-0x00007FFEBB4A5000-memory.dmp

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

MD5 b6483e2c6a048b03a30a053127348311
SHA1 97e7a48d992ce63c90a17b9637395e0bbbd1d177
SHA256 85bca50c48d17d2ccb74e6a9624e02e5126091b75256a92f5c6194ed7d75acf5
SHA512 d8566c42def5e2924fc5cf7c4e4b2f2571e3fc9bb2831bfb12adbeb497e0ffa2f37dc78fc1425cfc9edbe0292dfd26170633c9504e42d25f6616486103a80c42

memory/1256-59-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/1256-60-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/1256-63-0x00007FFEBB2B0000-0x00007FFEBB4A5000-memory.dmp

memory/1256-65-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/3988-67-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/540-69-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4504-70-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/3988-71-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4504-72-0x00007FFEBB2B0000-0x00007FFEBB4A5000-memory.dmp

memory/3988-75-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/3988-78-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/3988-81-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/3988-84-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/3988-87-0x0000000000900000-0x00000000009A2000-memory.dmp

memory/3988-89-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/3988-94-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/3988-97-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/3988-100-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/3988-103-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/3988-106-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/3988-109-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/3988-110-0x0000000000900000-0x00000000009A2000-memory.dmp

memory/3988-111-0x0000000000900000-0x00000000009A2000-memory.dmp

memory/3988-115-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/3988-118-0x0000000000400000-0x00000000006C8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-24 22:17

Reported

2024-06-24 22:20

Platform

win11-20240611-en

Max time kernel

142s

Max time network

130s

Command Line

"C:\Users\Admin\AppData\Local\Temp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.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-J3G4B.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3092 wrote to memory of 4552 N/A C:\Users\Admin\AppData\Local\Temp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe C:\Users\Admin\AppData\Local\Temp\is-J3G4B.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp
PID 3092 wrote to memory of 4552 N/A C:\Users\Admin\AppData\Local\Temp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe C:\Users\Admin\AppData\Local\Temp\is-J3G4B.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp
PID 3092 wrote to memory of 4552 N/A C:\Users\Admin\AppData\Local\Temp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe C:\Users\Admin\AppData\Local\Temp\is-J3G4B.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp
PID 4552 wrote to memory of 632 N/A C:\Users\Admin\AppData\Local\Temp\is-J3G4B.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4552 wrote to memory of 632 N/A C:\Users\Admin\AppData\Local\Temp\is-J3G4B.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4552 wrote to memory of 632 N/A C:\Users\Admin\AppData\Local\Temp\is-J3G4B.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4552 wrote to memory of 4364 N/A C:\Users\Admin\AppData\Local\Temp\is-J3G4B.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4552 wrote to memory of 4364 N/A C:\Users\Admin\AppData\Local\Temp\is-J3G4B.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
PID 4552 wrote to memory of 4364 N/A C:\Users\Admin\AppData\Local\Temp\is-J3G4B.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe

"C:\Users\Admin\AppData\Local\Temp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe"

C:\Users\Admin\AppData\Local\Temp\is-J3G4B.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp

"C:\Users\Admin\AppData\Local\Temp\is-J3G4B.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp" /SL5="$70062,4722858,54272,C:\Users\Admin\AppData\Local\Temp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.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 20.189.173.27:443 tcp
HK 141.98.234.31:53 bmklimj.com udp
TR 94.156.8.80:80 bmklimj.com tcp
FR 195.154.185.134:2023 tcp
US 8.8.8.8:53 31.234.98.141.in-addr.arpa udp
US 8.8.8.8:53 134.185.154.195.in-addr.arpa udp

Files

memory/3092-1-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3092-3-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-J3G4B.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp

MD5 58a22210313f4658cd89a8b89fbe724d
SHA1 64564a394418bd0d993cc97c53250bfcee405365
SHA256 710a06d600279fe3e2648eac534811fd8445b79714a7970eefb4bfe19b48e5c9
SHA512 a7c2c934cd9f99230600bd25078fc5997ac45bf08acdd9cdd3785d3eb0448dfc4fd6b2ae4ca609eb82922b49e4c33bfe88285bccc8de01202b13d1bc36dcebdf

memory/4552-10-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-HG0BU.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

MD5 b6483e2c6a048b03a30a053127348311
SHA1 97e7a48d992ce63c90a17b9637395e0bbbd1d177
SHA256 85bca50c48d17d2ccb74e6a9624e02e5126091b75256a92f5c6194ed7d75acf5
SHA512 d8566c42def5e2924fc5cf7c4e4b2f2571e3fc9bb2831bfb12adbeb497e0ffa2f37dc78fc1425cfc9edbe0292dfd26170633c9504e42d25f6616486103a80c42

memory/632-59-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/632-60-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/632-63-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/632-65-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4364-67-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4364-69-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/3092-70-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4552-71-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/4364-72-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4364-75-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4364-76-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4364-79-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4364-82-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4364-85-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4364-88-0x0000000000AD0000-0x0000000000B72000-memory.dmp

memory/4364-91-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4364-96-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4364-99-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4364-102-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4364-105-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4364-108-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4364-111-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4364-112-0x0000000000AD0000-0x0000000000B72000-memory.dmp

memory/4364-113-0x0000000000AD0000-0x0000000000B72000-memory.dmp

memory/4364-117-0x0000000000400000-0x00000000006C8000-memory.dmp

memory/4364-120-0x0000000000400000-0x00000000006C8000-memory.dmp