Malware Analysis Report

2025-01-02 02:50

Sample ID 241124-nnwmbsxnax
Target 98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.exe
SHA256 98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679db
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

98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679db

Threat Level: Known bad

The file 98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.exe was found to be: Known bad.

Malicious Activity Summary

sakula discovery persistence rat trojan

Sakula

Sakula family

Sakula payload

Executes dropped EXE

Loads dropped DLL

Deletes itself

Checks computer location settings

Adds Run key to start application

System Network Configuration Discovery: Internet Connection Discovery

Unsigned PE

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Runs ping.exe

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-24 11:33

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

2024-11-24 11:33

Reported

2024-11-24 11:35

Platform

win7-20240903-en

Max time kernel

118s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.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\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.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:\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\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.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\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2732 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2732 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2732 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2732 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2732 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2732 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2732 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2732 wrote to memory of 536 N/A C:\Users\Admin\AppData\Local\Temp\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.exe C:\Windows\SysWOW64\cmd.exe
PID 2732 wrote to memory of 536 N/A C:\Users\Admin\AppData\Local\Temp\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.exe C:\Windows\SysWOW64\cmd.exe
PID 2732 wrote to memory of 536 N/A C:\Users\Admin\AppData\Local\Temp\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.exe C:\Windows\SysWOW64\cmd.exe
PID 2732 wrote to memory of 536 N/A C:\Users\Admin\AppData\Local\Temp\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.exe C:\Windows\SysWOW64\cmd.exe
PID 536 wrote to memory of 792 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 536 wrote to memory of 792 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 536 wrote to memory of 792 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 536 wrote to memory of 792 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.exe

"C:\Users\Admin\AppData\Local\Temp\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.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\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.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 65b2541528477bff5af64f2e19a252ae
SHA1 4cfaa1a792a183a867ae57176e3dbd11c254ef1e
SHA256 010982824c6027ee239b1baa301d11e086832d999045be433f992eac7a2be363
SHA512 117e9ad852a30c21984eb500476f1d794bf74511d49317d5130dd8779f151853209cb41c0bdc520e0fe5f6cf5c316e15df824220a40240d256d8278cf53f0762

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-24 11:33

Reported

2024-11-24 11:35

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.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\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.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\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.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\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.exe

"C:\Users\Admin\AppData\Local\Temp\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.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\98c5fdc0d38e52a1870df253f4625b802768a57f5489c91ead76536add1679dbN.exe"

C:\Windows\SysWOW64\PING.EXE

ping 127.0.0.1

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 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 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 229.198.34.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.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 8.8.8.8:53 15.164.165.52.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
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 48.229.111.52.in-addr.arpa udp

Files

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

MD5 f0d86ee587b6aecd161793188f395e49
SHA1 7186afc5f6b5a1e6d0202460459e04ece120550f
SHA256 fcc2773901e07d67bf6916e63a5b3b3b0073a34cdb20ede2335d1c6da578753c
SHA512 ac6a1f8149e0e121c51121496706bbb523dc130a1b14b5a9e10bc6244b5c0fbb6f249b26d67cad260a8d66b718e50e83d5191166512222e4ed3417047e5f0881