Malware Analysis Report

2024-11-13 16:39

Sample ID 241106-sgbqss1pgy
Target d889fc82620f1cb402b8de785364e6a3
SHA256 fadceca1e82b639dc996d7f6e453d7c9010193b5d8e9dafce58674a456411e9d
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

fadceca1e82b639dc996d7f6e453d7c9010193b5d8e9dafce58674a456411e9d

Threat Level: Known bad

The file d889fc82620f1cb402b8de785364e6a3 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 15:05

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-06 15:05

Reported

2024-11-06 15:08

Platform

win10v2004-20241007-en

Max time kernel

89s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\NewDocument002.pdf.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\looptoolov.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\NewDocument002.pdf.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\looptoolov.exe N/A

Suspicious use of AdjustPrivilegeToken

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

Processes

C:\Users\Admin\AppData\Local\Temp\NewDocument002.pdf.exe

"C:\Users\Admin\AppData\Local\Temp\NewDocument002.pdf.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 andit.co udp
US 162.244.93.2:443 andit.co tcp
US 8.8.8.8:53 2.93.244.162.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp

Files

memory/1040-5-0x00000000752CE000-0x00000000752CF000-memory.dmp

memory/1040-6-0x00000000007E0000-0x00000000007E8000-memory.dmp

memory/1040-7-0x00000000752C0000-0x0000000075A70000-memory.dmp

memory/1040-8-0x00000000752CE000-0x00000000752CF000-memory.dmp

memory/1040-9-0x00000000752C0000-0x0000000075A70000-memory.dmp