Malware Analysis Report

2025-06-16 03:39

Sample ID 240526-k5vjtaea88
Target 6837f512cdacef6feeb2a7c92cf79bd1047c5a1e1530fceea56f95174e196fea
SHA256 6837f512cdacef6feeb2a7c92cf79bd1047c5a1e1530fceea56f95174e196fea
Tags
bootkit persistence upx
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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
7/10

SHA256

6837f512cdacef6feeb2a7c92cf79bd1047c5a1e1530fceea56f95174e196fea

Threat Level: Shows suspicious behavior

The file 6837f512cdacef6feeb2a7c92cf79bd1047c5a1e1530fceea56f95174e196fea was found to be: Shows suspicious behavior.

Malicious Activity Summary

bootkit persistence upx

UPX packed file

Writes to the Master Boot Record (MBR)

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-26 09:11

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-26 09:11

Reported

2024-05-26 09:14

Platform

win10v2004-20240426-en

Max time kernel

135s

Max time network

104s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6837f512cdacef6feeb2a7c92cf79bd1047c5a1e1530fceea56f95174e196fea.exe"

Signatures

UPX packed file

upx
Description Indicator Process Target
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Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\6837f512cdacef6feeb2a7c92cf79bd1047c5a1e1530fceea56f95174e196fea.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6837f512cdacef6feeb2a7c92cf79bd1047c5a1e1530fceea56f95174e196fea.exe

"C:\Users\Admin\AppData\Local\Temp\6837f512cdacef6feeb2a7c92cf79bd1047c5a1e1530fceea56f95174e196fea.exe"

Network

Country Destination Domain Proto
US 23.236.67.133:80 tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 23.236.67.133:80 tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp

Files

memory/3240-2-0x0000000001770000-0x0000000001771000-memory.dmp

memory/3240-6-0x00000000017D0000-0x00000000017D1000-memory.dmp

memory/3240-5-0x00000000017C0000-0x00000000017C1000-memory.dmp

memory/3240-7-0x0000000000400000-0x0000000001186000-memory.dmp

memory/3240-9-0x0000000000628000-0x0000000000A13000-memory.dmp

memory/3240-4-0x00000000017B0000-0x00000000017B1000-memory.dmp

memory/3240-45-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-39-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-53-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-51-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-49-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-47-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-37-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-36-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-33-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-31-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-29-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-54-0x0000000000400000-0x0000000001186000-memory.dmp

memory/3240-25-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-23-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-22-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-19-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-17-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-15-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-13-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-12-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-11-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-43-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-41-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-27-0x0000000010000000-0x000000001003E000-memory.dmp

memory/3240-3-0x00000000017A0000-0x00000000017A1000-memory.dmp

memory/3240-1-0x0000000001760000-0x0000000001761000-memory.dmp

memory/3240-0-0x0000000001740000-0x0000000001741000-memory.dmp

memory/3240-55-0x0000000000400000-0x0000000001186000-memory.dmp

memory/3240-56-0x0000000000628000-0x0000000000A13000-memory.dmp

memory/3240-57-0x0000000000400000-0x0000000001186000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-26 09:11

Reported

2024-05-26 09:14

Platform

win7-20231129-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6837f512cdacef6feeb2a7c92cf79bd1047c5a1e1530fceea56f95174e196fea.exe"

Signatures

UPX packed file

upx
Description Indicator Process Target
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Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\6837f512cdacef6feeb2a7c92cf79bd1047c5a1e1530fceea56f95174e196fea.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\6837f512cdacef6feeb2a7c92cf79bd1047c5a1e1530fceea56f95174e196fea.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6837f512cdacef6feeb2a7c92cf79bd1047c5a1e1530fceea56f95174e196fea.exe

"C:\Users\Admin\AppData\Local\Temp\6837f512cdacef6feeb2a7c92cf79bd1047c5a1e1530fceea56f95174e196fea.exe"

Network

Country Destination Domain Proto
US 23.236.67.133:80 tcp
US 23.236.67.133:80 tcp

Files

memory/2088-37-0x0000000000400000-0x0000000001186000-memory.dmp

memory/2088-36-0x0000000000628000-0x0000000000A13000-memory.dmp

memory/2088-34-0x00000000002A0000-0x00000000002A1000-memory.dmp

memory/2088-32-0x00000000002A0000-0x00000000002A1000-memory.dmp

memory/2088-29-0x0000000000290000-0x0000000000291000-memory.dmp

memory/2088-27-0x0000000000290000-0x0000000000291000-memory.dmp

memory/2088-24-0x0000000000280000-0x0000000000281000-memory.dmp

memory/2088-22-0x0000000000280000-0x0000000000281000-memory.dmp

memory/2088-19-0x0000000000270000-0x0000000000271000-memory.dmp

memory/2088-17-0x0000000000270000-0x0000000000271000-memory.dmp

memory/2088-14-0x0000000000260000-0x0000000000261000-memory.dmp

memory/2088-12-0x0000000000260000-0x0000000000261000-memory.dmp

memory/2088-10-0x0000000000260000-0x0000000000261000-memory.dmp

memory/2088-9-0x0000000000250000-0x0000000000251000-memory.dmp

memory/2088-7-0x0000000000250000-0x0000000000251000-memory.dmp

memory/2088-5-0x0000000000250000-0x0000000000251000-memory.dmp

memory/2088-4-0x0000000000230000-0x0000000000231000-memory.dmp

memory/2088-2-0x0000000000230000-0x0000000000231000-memory.dmp

memory/2088-0-0x0000000000230000-0x0000000000231000-memory.dmp

memory/2088-39-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2088-65-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2088-82-0x0000000000400000-0x0000000001186000-memory.dmp

memory/2088-63-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2088-61-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2088-59-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2088-57-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2088-55-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2088-53-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2088-52-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2088-49-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2088-48-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2088-45-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2088-43-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2088-41-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2088-40-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2088-83-0x0000000000400000-0x0000000001186000-memory.dmp

memory/2088-84-0x0000000000628000-0x0000000000A13000-memory.dmp

memory/2088-85-0x0000000000400000-0x0000000001186000-memory.dmp

memory/2088-86-0x0000000000400000-0x0000000001186000-memory.dmp