Malware Analysis Report

2024-11-13 16:39

Sample ID 241106-rnfsnascnm
Target 9710c717d29c3939520a177dc44aa08d7098b70f3650c37f25f260f677542306
SHA256 9710c717d29c3939520a177dc44aa08d7098b70f3650c37f25f260f677542306
Tags
purecrypter discovery downloader loader persistence
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 Overview

score
10/10

SHA256

9710c717d29c3939520a177dc44aa08d7098b70f3650c37f25f260f677542306

Threat Level: Known bad

The file 9710c717d29c3939520a177dc44aa08d7098b70f3650c37f25f260f677542306 was found to be: Known bad.

Malicious Activity Summary

purecrypter discovery downloader loader persistence

PureCrypter

Purecrypter family

Executes dropped EXE

Adds Run key to start application

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-06 14:20

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-06 14:20

Reported

2024-11-06 14:22

Platform

win10v2004-20241007-en

Max time kernel

91s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d56f262888e77a5de910970fdc1fa46fef7fc527da135926e994affa293ebde6.exe"

Signatures

PureCrypter

loader downloader purecrypter

Purecrypter family

purecrypter

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\ifmedianov.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\"" C:\Users\Admin\AppData\Local\Temp\d56f262888e77a5de910970fdc1fa46fef7fc527da135926e994affa293ebde6.exe N/A

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\IXP000.TMP\ifmedianov.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\ifmedianov.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\d56f262888e77a5de910970fdc1fa46fef7fc527da135926e994affa293ebde6.exe

"C:\Users\Admin\AppData\Local\Temp\d56f262888e77a5de910970fdc1fa46fef7fc527da135926e994affa293ebde6.exe"

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\ifmedianov.exe

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\ifmedianov.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 buffetdetalhes.com udp
US 8.8.8.8:53 buffetdetalhes.com udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 buffetdetalhes.com udp
US 8.8.8.8:53 buffetdetalhes.com udp
US 8.8.8.8:53 buffetdetalhes.com udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp

Files

memory/2768-5-0x0000000074DBE000-0x0000000074DBF000-memory.dmp

memory/2768-6-0x0000000000410000-0x0000000000434000-memory.dmp

memory/2768-7-0x00000000053E0000-0x0000000005984000-memory.dmp

memory/2768-8-0x0000000004ED0000-0x0000000004F62000-memory.dmp

memory/2768-9-0x0000000074DB0000-0x0000000075560000-memory.dmp

memory/2768-10-0x0000000004E40000-0x0000000004E4A000-memory.dmp

memory/2768-11-0x0000000074DBE000-0x0000000074DBF000-memory.dmp

memory/2768-12-0x0000000074DB0000-0x0000000075560000-memory.dmp

memory/2768-13-0x0000000074DB0000-0x0000000075560000-memory.dmp

memory/2768-14-0x0000000074DB0000-0x0000000075560000-memory.dmp