Malware Analysis Report

2024-11-30 21:48

Sample ID 230210-ae1m2aed4z
Target e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90
SHA256 e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90
Tags
purecrypter downloader loader persistence
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90

Threat Level: Known bad

The file e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90 was found to be: Known bad.

Malicious Activity Summary

purecrypter downloader loader persistence

Purecrypter family

PureCrypter

Adds Run key to start application

Suspicious use of SetThreadContext

Enumerates physical storage devices

Program crash

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-02-10 00:08

Signatures

Purecrypter family

purecrypter

Analysis: behavioral1

Detonation Overview

Submitted

2023-02-10 00:08

Reported

2023-02-12 23:25

Platform

win10-20220812-en

Max time kernel

77s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe"

Signatures

PureCrypter

loader downloader purecrypter

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1099808672-3828198950-1535142148-1000\Software\Microsoft\Windows\CurrentVersion\Run\Vokaupcde = "\"C:\\Users\\Admin\\AppData\\Roaming\\Rrlirudzf\\Vokaupcde.exe\"" C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe N/A

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3040 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3040 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3040 wrote to memory of 4968 N/A C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe
PID 3040 wrote to memory of 4968 N/A C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe
PID 3040 wrote to memory of 4968 N/A C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe
PID 3040 wrote to memory of 4968 N/A C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe
PID 3040 wrote to memory of 4968 N/A C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe
PID 3040 wrote to memory of 4968 N/A C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe
PID 4968 wrote to memory of 4076 N/A C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe
PID 4968 wrote to memory of 4076 N/A C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe

Processes

C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe

"C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==

C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe

C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe

C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe

"C:\Users\Admin\AppData\Local\Temp\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 4076 -s 1524

Network

Country Destination Domain Proto
US 163.123.142.210:80 163.123.142.210 tcp
US 104.208.16.88:443 tcp
IT 179.43.155.202:9090 tcp
US 163.123.142.210:80 tcp

Files

memory/3040-119-0x0000025BDF3F0000-0x0000025BDF3FE000-memory.dmp

memory/3040-120-0x0000025BF99C0000-0x0000025BF9ADC000-memory.dmp

memory/3040-121-0x0000025BF9BE0000-0x0000025BF9C64000-memory.dmp

memory/3040-122-0x0000025BF9D10000-0x0000025BF9D32000-memory.dmp

memory/2764-123-0x0000000000000000-mapping.dmp

memory/2764-133-0x00000234023B0000-0x0000023402426000-memory.dmp

memory/4968-141-0x0000000000400000-0x000000000048C000-memory.dmp

memory/4968-142-0x0000000000400000-mapping.dmp

memory/4968-143-0x0000028D39210000-0x0000028D392B0000-memory.dmp

memory/4968-144-0x0000028D393E0000-0x0000028D39436000-memory.dmp

memory/4968-145-0x0000028D39440000-0x0000028D3948C000-memory.dmp

memory/4076-146-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\e1614217a227ee00d452c21059af1d4572420cd6079d384ec265e2b1a5192f90.exe.log

MD5 045564096243d2289783235e6c27c9c1
SHA1 89c423740dfadb823a90a731fb35396e4f484e4e
SHA256 de0bb5370233eb7560ad0618789ce3a33089683bd8f20c61a32197fe0f05eea3
SHA512 986b735bd0191dcb59c694848ef10ef828a4276f73dec86d526a7447298b19846b6030248f43e4c25b9e6bbe1be25d31ca7d54c2226a07e52d7874b5ca8f81a6