Malware Analysis Report

2024-12-07 22:05

Sample ID 241115-3fkmesykgm
Target b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe
SHA256 b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9ab
Tags
sakula discovery persistence rat trojan
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

b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9ab

Threat Level: Known bad

The file b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe was found to be: Known bad.

Malicious Activity Summary

sakula discovery persistence rat trojan

Sakula

Sakula family

Sakula payload

Checks computer location settings

Executes dropped EXE

Deletes itself

Loads dropped DLL

Adds Run key to start application

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

System Network Configuration Discovery: Internet Connection Discovery

Suspicious use of WriteProcessMemory

Runs ping.exe

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-15 23:27

Signatures

Sakula family

sakula

Sakula payload

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-15 23:27

Reported

2024-11-15 23:29

Platform

win7-20240903-en

Max time kernel

118s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe"

Signatures

Sakula

trojan rat sakula

Sakula family

sakula

Sakula payload

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

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\AdobeUpdate.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\AdobeUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MicroMedia\\AdobeUpdate.exe" C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\PING.EXE N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe N/A

System Network Configuration Discovery: Internet Connection Discovery

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

Runs ping.exe

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2124 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2124 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2124 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2124 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2124 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2124 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2124 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2124 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe C:\Windows\SysWOW64\cmd.exe
PID 2124 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe C:\Windows\SysWOW64\cmd.exe
PID 2124 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe C:\Windows\SysWOW64\cmd.exe
PID 2124 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe C:\Windows\SysWOW64\cmd.exe
PID 2576 wrote to memory of 2828 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2576 wrote to memory of 2828 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2576 wrote to memory of 2828 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2576 wrote to memory of 2828 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe

"C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe"

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

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

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe"

C:\Windows\SysWOW64\PING.EXE

ping 127.0.0.1

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.savmpet.com udp
US 52.34.198.229:80 www.savmpet.com tcp
US 52.34.198.229:80 www.savmpet.com tcp
US 52.34.198.229:80 www.savmpet.com tcp
US 52.34.198.229:80 www.savmpet.com tcp
US 52.34.198.229:80 www.savmpet.com tcp
US 52.34.198.229:80 www.savmpet.com tcp
US 52.34.198.229:80 www.savmpet.com tcp
US 52.34.198.229:80 www.savmpet.com tcp

Files

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

MD5 54cbc9e5369f7be91c8dcd17f884fe12
SHA1 fd60f6d8eaa3f40381e20b951ed46a6ee70e53b4
SHA256 5019300425ee821fee5d86e0aaefd9fbd1c8039a3c331128839f4f526dc787bf
SHA512 2527ec4d0f88b9248f5df18009cc20755c91f9c31ab5999548129dbc429a07d143806f86eec03eaf00f2b846f7277916e822ed5d7333ac8b523eb9ff3b858b64

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-15 23:27

Reported

2024-11-15 23:29

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

98s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe"

Signatures

Sakula

trojan rat sakula

Sakula family

sakula

Sakula payload

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.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\AdobeUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MicroMedia\\AdobeUpdate.exe" C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\PING.EXE N/A

System Network Configuration Discovery: Internet Connection Discovery

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

Runs ping.exe

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe

"C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe"

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

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

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\b20523514390d3423b0e225c5323726e9cecf4a2fe3d0839500aa30979bae9abN.exe"

C:\Windows\SysWOW64\PING.EXE

ping 127.0.0.1

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.savmpet.com udp
US 52.34.198.229:80 www.savmpet.com tcp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 182.129.81.91.in-addr.arpa udp
US 52.34.198.229:80 www.savmpet.com tcp
US 8.8.8.8:53 229.198.34.52.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 52.34.198.229:80 www.savmpet.com tcp
US 52.34.198.229:80 www.savmpet.com tcp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 52.34.198.229:80 www.savmpet.com tcp
US 8.8.8.8:53 85.49.80.91.in-addr.arpa udp
US 52.34.198.229:80 www.savmpet.com tcp
US 52.34.198.229:80 www.savmpet.com tcp
US 52.34.198.229:80 www.savmpet.com tcp

Files

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

MD5 d75bf17a65b46d563f6ae30903007ef2
SHA1 6b5af0054f3b0658d22362d0d4c6c78d9f8d9ca9
SHA256 4f7b152c418dad1f5419696bf97b673a470569094a3b188f75691e362a049c76
SHA512 88365a85bdac72ada35b6d072f3d5dbe49c855adc154d8c4e536acccfb2a5e4bd2bfdf6349e7360629db0c5af784229fd358eed59bf307d04413b1451342d044