Malware Analysis Report

2025-08-10 21:44

Sample ID 240610-fbkqascb71
Target 2024-06-10_2291df72639b1839f793b162d82513c3_cryptolocker
SHA256 408340107c86f0cba968de6cccaa81a06543ca368250bdeb617b5a44cae48d21
Tags
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

408340107c86f0cba968de6cccaa81a06543ca368250bdeb617b5a44cae48d21

Threat Level: Known bad

The file 2024-06-10_2291df72639b1839f793b162d82513c3_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Executes dropped EXE

Loads dropped DLL

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-10 04:41

Signatures

Detection of CryptoLocker Variants

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-10 04:41

Reported

2024-06-10 04:44

Platform

win7-20240221-en

Max time kernel

148s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_2291df72639b1839f793b162d82513c3_cryptolocker.exe"

Signatures

Detection of CryptoLocker Variants

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

Executes dropped EXE

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-10_2291df72639b1839f793b162d82513c3_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-10_2291df72639b1839f793b162d82513c3_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_2291df72639b1839f793b162d82513c3_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 2ndry.com udp

Files

memory/2140-0-0x0000000008000000-0x000000000800A000-memory.dmp

memory/2140-2-0x0000000000550000-0x0000000000556000-memory.dmp

memory/2140-9-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2140-1-0x0000000000240000-0x0000000000246000-memory.dmp

\Users\Admin\AppData\Local\Temp\lossy.exe

MD5 be599d772e365bcb6d21acde7210c327
SHA1 9a904fc99d4ef7b54ba527189c63384927c2f705
SHA256 ecca5bf370cc8dfbf5e2083e88fc820f3f80264e02857b6ad1ec21bda0648456
SHA512 235188e5f81a0fbd45ee51212e5590bd39f75746cfd43ce38fa8d96e19ac9014b450432f2bf8133f76965ca9ed8f129f5b6e1b657da5f321013b2c410211b74c

memory/2504-24-0x00000000001D0000-0x00000000001D6000-memory.dmp

memory/2504-17-0x0000000000200000-0x0000000000206000-memory.dmp

memory/2140-15-0x0000000008000000-0x000000000800A000-memory.dmp

memory/2504-25-0x0000000008000000-0x000000000800A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Reported

0001-01-01 00:00

Command Line

N/A

Signatures

N/A

Processes

N/A

Network

N/A

Files

N/A