Malware Analysis Report

2024-11-30 21:57

Sample ID 230213-b2ejrahd2s
Target 8531ba62c67d13ce3ad94bcd42bb2c00.bin
SHA256 c97e39c3560473ee1cbd225aadf3a4cad262bbe0740b011dc9e93450e68ec110
Tags
purecrypter downloader loader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

c97e39c3560473ee1cbd225aadf3a4cad262bbe0740b011dc9e93450e68ec110

Threat Level: Known bad

The file 8531ba62c67d13ce3ad94bcd42bb2c00.bin was found to be: Known bad.

Malicious Activity Summary

purecrypter downloader loader

Purecrypter family

PureCrypter

Program crash

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-02-13 01:38

Signatures

Purecrypter family

purecrypter

Analysis: behavioral2

Detonation Overview

Submitted

2023-02-13 01:38

Reported

2023-02-13 01:40

Platform

win10v2004-20221111-en

Max time kernel

91s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\465a71fa9458ee9162610eae78424a2a3f75561af0a2ce10ab3e6afde10aa74c.exe"

Signatures

PureCrypter

loader downloader purecrypter

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\465a71fa9458ee9162610eae78424a2a3f75561af0a2ce10ab3e6afde10aa74c.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\465a71fa9458ee9162610eae78424a2a3f75561af0a2ce10ab3e6afde10aa74c.exe

"C:\Users\Admin\AppData\Local\Temp\465a71fa9458ee9162610eae78424a2a3f75561af0a2ce10ab3e6afde10aa74c.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1060 -ip 1060

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1060 -s 1952

Network

Country Destination Domain Proto
US 8.8.8.8:53 onedrive.live.com udp
US 13.107.42.13:443 onedrive.live.com tcp
US 8.8.8.8:53 zerufq.ch.files.1drv.com udp
US 13.107.42.12:443 zerufq.ch.files.1drv.com tcp
GB 51.104.15.252:443 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
NL 104.80.225.205:443 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp

Files

memory/1060-132-0x0000000000790000-0x000000000079C000-memory.dmp

memory/1060-133-0x0000000005800000-0x0000000005DA4000-memory.dmp

memory/1060-134-0x0000000005190000-0x0000000005222000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2023-02-13 01:38

Reported

2023-02-13 01:40

Platform

win7-20220812-en

Max time kernel

39s

Max time network

135s

Command Line

"C:\Users\Admin\AppData\Local\Temp\465a71fa9458ee9162610eae78424a2a3f75561af0a2ce10ab3e6afde10aa74c.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\465a71fa9458ee9162610eae78424a2a3f75561af0a2ce10ab3e6afde10aa74c.exe

"C:\Users\Admin\AppData\Local\Temp\465a71fa9458ee9162610eae78424a2a3f75561af0a2ce10ab3e6afde10aa74c.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1864 -s 1772

Network

Country Destination Domain Proto
US 8.8.8.8:53 onedrive.live.com udp
US 13.107.42.13:443 onedrive.live.com tcp

Files

memory/1864-54-0x0000000001300000-0x000000000130C000-memory.dmp

memory/1864-55-0x0000000075911000-0x0000000075913000-memory.dmp

memory/1324-56-0x0000000000000000-mapping.dmp