Malware Analysis Report

2024-11-13 18:44

Sample ID 231014-d8hwvsgb67
Target cd64145da6ddb5857039ef96ca9b47d0_JC.exe
SHA256 4e64e96e5f49908f9bd44176dbdd2012e84bb6e7bde72af419ada7e8a17e303a
Tags
sakula persistence rat trojan
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

4e64e96e5f49908f9bd44176dbdd2012e84bb6e7bde72af419ada7e8a17e303a

Threat Level: Known bad

The file cd64145da6ddb5857039ef96ca9b47d0_JC.exe was found to be: Known bad.

Malicious Activity Summary

sakula persistence rat trojan

Sakula

Deletes itself

Loads dropped DLL

Executes dropped EXE

Adds Run key to start application

Unsigned PE

Runs ping.exe

Suspicious use of WriteProcessMemory

Modifies registry key

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-10-14 03:40

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2023-10-14 03:40

Reported

2023-10-14 17:58

Platform

win10v2004-20230915-en

Max time kernel

144s

Max time network

160s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe"

Signatures

Sakula

trojan rat sakula

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MicroMedia = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MicroMedia\\MediaCenter.exe" C:\Windows\SysWOW64\reg.exe N/A

Modifies registry key

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\reg.exe N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4088 wrote to memory of 1748 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 4088 wrote to memory of 1748 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 4088 wrote to memory of 1748 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 4088 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 4088 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 4088 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 4088 wrote to memory of 5060 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 4088 wrote to memory of 5060 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 4088 wrote to memory of 5060 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 2504 wrote to memory of 4344 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
PID 2504 wrote to memory of 4344 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
PID 2504 wrote to memory of 4344 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
PID 5060 wrote to memory of 1476 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 5060 wrote to memory of 1476 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 5060 wrote to memory of 1476 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 1748 wrote to memory of 2276 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1748 wrote to memory of 2276 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1748 wrote to memory of 2276 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe

Processes

C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe

"C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /c reg add HKLM\Software\Microsoft\Windows\CurrentVersion\Run /v "MicroMedia" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /c ping 127.0.0.1 & del "C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe"

C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe

C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe

C:\Windows\SysWOW64\PING.EXE

ping 127.0.0.1

C:\Windows\SysWOW64\reg.exe

reg add HKLM\Software\Microsoft\Windows\CurrentVersion\Run /v "MicroMedia" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 29.81.57.23.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 2.36.159.162.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 vpn.premrera.com udp
US 208.91.197.27:443 vpn.premrera.com tcp
US 208.91.197.27:443 vpn.premrera.com tcp
US 8.8.8.8:53 27.197.91.208.in-addr.arpa udp
US 208.91.197.27:443 vpn.premrera.com tcp
US 8.8.8.8:53 126.209.247.8.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 208.91.197.27:443 vpn.premrera.com tcp
US 208.91.197.27:443 vpn.premrera.com tcp
US 208.91.197.27:443 vpn.premrera.com tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 209.143.182.52.in-addr.arpa udp
US 208.91.197.27:443 vpn.premrera.com tcp
US 208.91.197.27:443 vpn.premrera.com tcp
US 208.91.197.27:443 vpn.premrera.com tcp

Files

memory/4088-0-0x0000000000400000-0x000000000040B000-memory.dmp

memory/4088-1-0x0000000000400000-0x000000000040B000-memory.dmp

memory/4088-3-0x0000000000400000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe

MD5 5828e6ee661b0fb65a47b279d3683e24
SHA1 cb6541f5f7acee95b2d52dfd434eaa693f79d057
SHA256 5da3e5d55a901edef3a70f28083dc216624b55ce59c82f6eaea717b2ac8aa7db
SHA512 74ceabf859d04839d7511e4660a8ec165283be2173e632d943cc00befd3659d0d79e78645cea139b276ea8aa7045c8efe429137e6b2b6bf94cdc6e002bcc1c93

C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe

MD5 5828e6ee661b0fb65a47b279d3683e24
SHA1 cb6541f5f7acee95b2d52dfd434eaa693f79d057
SHA256 5da3e5d55a901edef3a70f28083dc216624b55ce59c82f6eaea717b2ac8aa7db
SHA512 74ceabf859d04839d7511e4660a8ec165283be2173e632d943cc00befd3659d0d79e78645cea139b276ea8aa7045c8efe429137e6b2b6bf94cdc6e002bcc1c93

memory/4344-7-0x0000000000400000-0x000000000040B000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2023-10-14 03:40

Reported

2023-10-14 17:58

Platform

win7-20230831-en

Max time kernel

144s

Max time network

177s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe"

Signatures

Sakula

trojan rat sakula

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\MicroMedia = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MicroMedia\\MediaCenter.exe" C:\Windows\SysWOW64\reg.exe N/A

Modifies registry key

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\reg.exe N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1692 wrote to memory of 2360 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 1692 wrote to memory of 2360 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 1692 wrote to memory of 2360 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 1692 wrote to memory of 2360 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 1692 wrote to memory of 1376 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 1692 wrote to memory of 1376 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 1692 wrote to memory of 1376 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 1692 wrote to memory of 1376 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 1692 wrote to memory of 1908 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 1692 wrote to memory of 1908 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 1692 wrote to memory of 1908 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 1692 wrote to memory of 1908 N/A C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe C:\Windows\SysWOW64\cmd.exe
PID 2360 wrote to memory of 2740 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2360 wrote to memory of 2740 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2360 wrote to memory of 2740 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2360 wrote to memory of 2740 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1908 wrote to memory of 2756 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 1908 wrote to memory of 2756 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 1908 wrote to memory of 2756 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 1908 wrote to memory of 2756 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 1376 wrote to memory of 2720 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
PID 1376 wrote to memory of 2720 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
PID 1376 wrote to memory of 2720 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
PID 1376 wrote to memory of 2720 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe

Processes

C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe

"C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /c reg add HKLM\Software\Microsoft\Windows\CurrentVersion\Run /v "MicroMedia" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /c ping 127.0.0.1 & del "C:\Users\Admin\AppData\Local\Temp\cd64145da6ddb5857039ef96ca9b47d0_JC.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe"

C:\Windows\SysWOW64\reg.exe

reg add HKLM\Software\Microsoft\Windows\CurrentVersion\Run /v "MicroMedia" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe"

C:\Windows\SysWOW64\PING.EXE

ping 127.0.0.1

C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe

C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 vpn.premrera.com udp
US 208.91.197.27:443 vpn.premrera.com tcp
US 208.91.197.27:443 vpn.premrera.com tcp
US 208.91.197.27:443 vpn.premrera.com tcp
US 208.91.197.27:443 vpn.premrera.com tcp
US 208.91.197.27:443 vpn.premrera.com tcp
US 208.91.197.27:443 vpn.premrera.com tcp
US 208.91.197.27:443 vpn.premrera.com tcp
US 208.91.197.27:443 vpn.premrera.com tcp

Files

memory/1692-0-0x0000000000400000-0x000000000040B000-memory.dmp

memory/1692-1-0x0000000000400000-0x000000000040B000-memory.dmp

memory/1692-3-0x0000000000400000-0x000000000040B000-memory.dmp

\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe

MD5 2b95f260ed966ac3570b1aa91283bc51
SHA1 19bc62b1bc4b8aea3081823f1b47f11706d0aa2a
SHA256 4a924f731de5a9a74ab1ab9413b022ee22c235585b04d13b2927c49a1ed3de04
SHA512 06dfb3b36436ace3a4b28ad3cccb1bced843902b2417a661d19ca79afa1602e4b396b2da4c69b1c73f0da112aef06e575e1cd2e896863fca20d92c2129a9e742

memory/1376-9-0x0000000001EE0000-0x0000000001EEB000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe

MD5 2b95f260ed966ac3570b1aa91283bc51
SHA1 19bc62b1bc4b8aea3081823f1b47f11706d0aa2a
SHA256 4a924f731de5a9a74ab1ab9413b022ee22c235585b04d13b2927c49a1ed3de04
SHA512 06dfb3b36436ace3a4b28ad3cccb1bced843902b2417a661d19ca79afa1602e4b396b2da4c69b1c73f0da112aef06e575e1cd2e896863fca20d92c2129a9e742

memory/1376-6-0x0000000001EE0000-0x0000000001EEB000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe

MD5 2b95f260ed966ac3570b1aa91283bc51
SHA1 19bc62b1bc4b8aea3081823f1b47f11706d0aa2a
SHA256 4a924f731de5a9a74ab1ab9413b022ee22c235585b04d13b2927c49a1ed3de04
SHA512 06dfb3b36436ace3a4b28ad3cccb1bced843902b2417a661d19ca79afa1602e4b396b2da4c69b1c73f0da112aef06e575e1cd2e896863fca20d92c2129a9e742

\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe

MD5 2b95f260ed966ac3570b1aa91283bc51
SHA1 19bc62b1bc4b8aea3081823f1b47f11706d0aa2a
SHA256 4a924f731de5a9a74ab1ab9413b022ee22c235585b04d13b2927c49a1ed3de04
SHA512 06dfb3b36436ace3a4b28ad3cccb1bced843902b2417a661d19ca79afa1602e4b396b2da4c69b1c73f0da112aef06e575e1cd2e896863fca20d92c2129a9e742

memory/1376-10-0x0000000001EE0000-0x0000000001EEB000-memory.dmp