Malware Analysis Report

2024-11-15 06:06

Sample ID 240407-x38pwacb4x
Target 2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693
SHA256 2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693
Tags
persistence spyware stealer
score
7/10

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
7/10

SHA256

2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693

Threat Level: Shows suspicious behavior

The file 2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693 was found to be: Shows suspicious behavior.

Malicious Activity Summary

persistence spyware stealer

Reads user/profile data of web browsers

Executes dropped EXE

Loads dropped DLL

Adds Run key to start application

Drops file in Program Files directory

Unsigned PE

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-07 19:23

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-07 19:23

Reported

2024-04-07 19:26

Platform

win7-20240221-en

Max time kernel

140s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Microsoft Build\Isass.exe N/A

Reads user/profile data of web browsers

spyware stealer

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Program Files (x86)\\Microsoft Build\\Isass.exe" C:\Users\Admin\AppData\Local\Temp\2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Program Files (x86)\\Microsoft Build\\Isass.exe" C:\Users\Admin\AppData\Local\Temp\2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\Microsoft Build\Isass.exe C:\Users\Admin\AppData\Local\Temp\2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe

"C:\Users\Admin\AppData\Local\Temp\2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe"

C:\Program Files (x86)\Microsoft Build\Isass.exe

"C:\Program Files (x86)\Microsoft Build\Isass.exe"

Network

N/A

Files

C:\Program Files (x86)\Microsoft Build\Isass.exe

MD5 9ad79306a03519180ea892724d2dd16f
SHA1 6796558c7b6f94a2416634239f60114097977b49
SHA256 2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693
SHA512 ac7b2e45aa3ffefeb55375466419ff08cac947f6290ae67bdc5058e6853be46eb91f547243106cfaaa6d49898dbd134c4d935981ab7c3d346a77fc005eaa9971

memory/1196-10-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/1196-9-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/1196-11-0x0000000004450000-0x00000000056F7000-memory.dmp

memory/2188-13-0x0000000000220000-0x0000000000221000-memory.dmp

memory/2188-12-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/1196-14-0x0000000004450000-0x00000000056F7000-memory.dmp

memory/2188-15-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/2188-16-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/2188-17-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/2188-18-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/2188-21-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/2188-32-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/2188-33-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/2188-34-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/2188-35-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/2188-36-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/2188-37-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/2188-38-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/2188-47-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/2188-56-0x0000000004310000-0x00000000055B7000-memory.dmp

memory/2188-57-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/2188-58-0x0000000000400000-0x00000000016A7000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-07 19:23

Reported

2024-04-07 19:26

Platform

win10v2004-20240226-en

Max time kernel

147s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Microsoft Build\Isass.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Program Files (x86)\\Microsoft Build\\Isass.exe" C:\Users\Admin\AppData\Local\Temp\2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Program Files (x86)\\Microsoft Build\\Isass.exe" C:\Users\Admin\AppData\Local\Temp\2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\Microsoft Build\Isass.exe C:\Users\Admin\AppData\Local\Temp\2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Program Files (x86)\Microsoft Build\Isass.exe

Processes

C:\Users\Admin\AppData\Local\Temp\2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe

"C:\Users\Admin\AppData\Local\Temp\2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe"

C:\Program Files (x86)\Microsoft Build\Isass.exe

"C:\Program Files (x86)\Microsoft Build\Isass.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 1232 -ip 1232

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1232 -s 1020

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 159.113.53.23.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 130.118.77.104.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 211.143.182.52.in-addr.arpa udp

Files

memory/4896-0-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/4896-1-0x0000000001CA0000-0x0000000001CA1000-memory.dmp

C:\Program Files (x86)\Microsoft Build\Isass.exe

MD5 9ad79306a03519180ea892724d2dd16f
SHA1 6796558c7b6f94a2416634239f60114097977b49
SHA256 2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693
SHA512 ac7b2e45aa3ffefeb55375466419ff08cac947f6290ae67bdc5058e6853be46eb91f547243106cfaaa6d49898dbd134c4d935981ab7c3d346a77fc005eaa9971

memory/1232-7-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/1232-8-0x0000000001860000-0x0000000001861000-memory.dmp

memory/4896-6-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/1232-9-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/1232-12-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/1232-13-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/1232-14-0x0000000000400000-0x00000000016A7000-memory.dmp

C:\odt\office2016setup.exe

MD5 9df77f7f13189d4b002c32ace44d96a0
SHA1 09d55f56ff2ca919696c8227f08cbb47400652ef
SHA256 5d12e9992dbab0e878278433fc9973cbd4522811faf44cfd04c9065535782e7e
SHA512 643c82f59b8dca88f03d641dc7d42541cfa0c3dabaacaacd1a423a43fc246cfa48eae332d3be8b10fa9f4977bafc8875da96e744b864b8ac63db02a9691fd18c

memory/1232-16-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/1232-17-0x0000000000400000-0x00000000016A7000-memory.dmp

memory/1232-26-0x0000000000400000-0x00000000016A7000-memory.dmp