Malware Analysis Report

2025-01-02 02:50

Sample ID 241130-nkgc8sxjfr
Target f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.exe
SHA256 f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6d
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: 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

f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6d

Threat Level: Known bad

The file f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.exe was found to be: Known bad.

Malicious Activity Summary

sakula discovery persistence rat trojan

Sakula payload

Sakula family

Sakula

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Deletes itself

Adds Run key to start application

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

System Network Configuration Discovery: Internet Connection Discovery

Suspicious use of AdjustPrivilegeToken

Runs ping.exe

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-30 11:27

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: behavioral2

Detonation Overview

Submitted

2024-11-30 11:27

Reported

2024-11-30 11:29

Platform

win10v2004-20241007-en

Max time kernel

95s

Max time network

100s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.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\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.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\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.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\PING.EXE N/A
N/A N/A C:\Windows\SysWOW64\cmd.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\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.exe

"C:\Users\Admin\AppData\Local\Temp\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.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\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.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 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 229.198.34.52.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 52.34.198.229:80 www.savmpet.com tcp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 52.34.198.229:80 www.savmpet.com tcp
US 8.8.8.8:53 172.214.232.199.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 8.8.8.8:53 240.221.184.93.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 11.227.111.52.in-addr.arpa udp

Files

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

MD5 ef00bd01f47bea930ca246acf096c54c
SHA1 3373d24f5ca8a9b8947f0431d11fec7735bdc550
SHA256 0197da05c72270799123b44e502e3f49997e402fdd019d39225c8d9dfc1c27ee
SHA512 6ea8c4b9d6cf8401a5df78df8566a173396f4d67510a663d4adea0619d4c050fbd3a89109a2007a10b73ec7325021850ec36512328b4d1f4e9ee03d53dc58b5c

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-30 11:27

Reported

2024-11-30 11:29

Platform

win7-20240708-en

Max time kernel

97s

Max time network

101s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.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\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.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\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.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\PING.EXE N/A
N/A N/A C:\Windows\SysWOW64\cmd.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\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2292 wrote to memory of 824 N/A C:\Users\Admin\AppData\Local\Temp\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2292 wrote to memory of 824 N/A C:\Users\Admin\AppData\Local\Temp\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2292 wrote to memory of 824 N/A C:\Users\Admin\AppData\Local\Temp\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2292 wrote to memory of 824 N/A C:\Users\Admin\AppData\Local\Temp\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2292 wrote to memory of 824 N/A C:\Users\Admin\AppData\Local\Temp\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2292 wrote to memory of 824 N/A C:\Users\Admin\AppData\Local\Temp\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2292 wrote to memory of 824 N/A C:\Users\Admin\AppData\Local\Temp\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.exe C:\Users\Admin\AppData\Local\Temp\MicroMedia\AdobeUpdate.exe
PID 2292 wrote to memory of 2872 N/A C:\Users\Admin\AppData\Local\Temp\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.exe C:\Windows\SysWOW64\cmd.exe
PID 2292 wrote to memory of 2872 N/A C:\Users\Admin\AppData\Local\Temp\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.exe C:\Windows\SysWOW64\cmd.exe
PID 2292 wrote to memory of 2872 N/A C:\Users\Admin\AppData\Local\Temp\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.exe C:\Windows\SysWOW64\cmd.exe
PID 2292 wrote to memory of 2872 N/A C:\Users\Admin\AppData\Local\Temp\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.exe C:\Windows\SysWOW64\cmd.exe
PID 2872 wrote to memory of 2864 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2872 wrote to memory of 2864 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2872 wrote to memory of 2864 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2872 wrote to memory of 2864 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.exe

"C:\Users\Admin\AppData\Local\Temp\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.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\f91ef7b47de8d4300facd6b1162075b438d4f8d805c3c7cecf3aa46077e2cb6dN.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 697c622b58e4d8e56c82a46a344913d8
SHA1 0c64856fea810b32e97547a58b7390f2fb2455b7
SHA256 b5a491f6c6d94fd34dfb9fb78a345a324978116e2e93aa7dca4c6af39b9c5c26
SHA512 b948716041511ac4b7aeb9564635587bcc8d48ba5efe3cc34950dc52221e5c61cbf1d990930f13f1fbd2577b2159b290b536f4445cd3f6acbc8da7be7e81c5e1