Malware Analysis Report

2025-06-16 07:05

Sample ID 240531-s7g1hach9z
Target 2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker
SHA256 0052586317d6b2cbdc0ba65c9bbe5c95202847f204f83b1f18e1105aaa28f263
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

0052586317d6b2cbdc0ba65c9bbe5c95202847f204f83b1f18e1105aaa28f263

Threat Level: Known bad

The file 2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Loads dropped DLL

Executes dropped EXE

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-31 15:45

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

2024-05-31 15:45

Reported

2024-05-31 15:48

Platform

win7-20240221-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_672195f5397ff7237fd9837d48404695_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
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\hasfj.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 mytarta.com udp

Files

memory/2244-1-0x0000000008000000-0x000000000800D000-memory.dmp

memory/2244-0-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

memory/2244-2-0x0000000001CF0000-0x0000000001CF6000-memory.dmp

memory/2244-9-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

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

MD5 a80fd7bcf44fd4baadeb854b0d3e94fc
SHA1 9ee10e60fedc1c111ca74d154b71ad500c640e33
SHA256 bfb9c4c9e329c4939f1887e22fb21d5b41105dcab93c3b089fcd33780dd30867
SHA512 74f33c1a33b734f56e0551f74990a02f0f4ff64e5a739ed055123cbef90e6e83e3d47d5d9faf694bed1c3e84f22c7c5e172a61878ef8a63ecdffb0f4c6bab99f

memory/2244-14-0x0000000008000000-0x000000000800D000-memory.dmp

memory/3040-16-0x0000000008000000-0x000000000800D000-memory.dmp

memory/3040-19-0x0000000000580000-0x0000000000586000-memory.dmp

memory/3040-18-0x0000000000360000-0x0000000000366000-memory.dmp

memory/3040-26-0x0000000008000000-0x000000000800D000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-31 15:45

Reported

2024-05-31 15:48

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_672195f5397ff7237fd9837d48404695_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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker.exe N/A

Executes dropped EXE

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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
NL 23.62.61.129:443 www.bing.com tcp
US 8.8.8.8:53 129.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com 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
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 73.239.69.13.in-addr.arpa udp

Files

memory/4292-0-0x0000000008000000-0x000000000800D000-memory.dmp

memory/4292-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

memory/4292-2-0x0000000000720000-0x0000000000726000-memory.dmp

memory/4292-9-0x00000000006F0000-0x00000000006F6000-memory.dmp

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

MD5 a80fd7bcf44fd4baadeb854b0d3e94fc
SHA1 9ee10e60fedc1c111ca74d154b71ad500c640e33
SHA256 bfb9c4c9e329c4939f1887e22fb21d5b41105dcab93c3b089fcd33780dd30867
SHA512 74f33c1a33b734f56e0551f74990a02f0f4ff64e5a739ed055123cbef90e6e83e3d47d5d9faf694bed1c3e84f22c7c5e172a61878ef8a63ecdffb0f4c6bab99f

memory/4292-17-0x0000000008000000-0x000000000800D000-memory.dmp

memory/3108-19-0x0000000003010000-0x0000000003016000-memory.dmp

memory/3108-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

memory/3108-26-0x0000000008000000-0x000000000800D000-memory.dmp