Malware Analysis Report

2025-08-05 09:28

Sample ID 240223-pvzg8sgd46
Target 2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker
SHA256 98d4374754b3c2f1d6cd2c79f705f85f63935fb00c7a67bc4c289b638ed85feb
Tags
discovery
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

98d4374754b3c2f1d6cd2c79f705f85f63935fb00c7a67bc4c289b638ed85feb

Threat Level: Known bad

The file 2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker was found to be: Known bad.

Malicious Activity Summary

discovery

Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Executes dropped EXE

Checks computer location settings

Loads dropped DLL

Creates a large amount of network flows

Enumerates physical storage devices

Unsigned PE

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-23 12:39

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

2024-02-23 12:39

Reported

2024-02-23 12:42

Platform

win7-20240221-en

Max time kernel

13s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe"

Signatures

Detection of CryptoLocker Variants

Description Indicator Process Target
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\retln.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe N/A

Creates a large amount of network flows

discovery

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 storage-cabinets.info udp

Files

memory/548-0-0x0000000000260000-0x0000000000266000-memory.dmp

memory/548-1-0x0000000000400000-0x0000000000406000-memory.dmp

memory/548-2-0x0000000000260000-0x0000000000266000-memory.dmp

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

MD5 e0671dc105ee61eced488bee1c94ba8e
SHA1 465f8db788448669dfc029e9ecbedfea1f48dc57
SHA256 b62698acab5cbb076c858f01c4247c26d630c79fea5c34dda92dfed4fae58643
SHA512 9f06ab205dfd92c2bac1a801d9f278cb23cfa341510d839b08244285885f1472e97c74a54e040e1cbfb94b3d0a932485ac4da461c90c307bd7eca99ebd7af616

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-23 12:39

Reported

2024-02-23 12:42

Platform

win10v2004-20240221-en

Max time kernel

151s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe"

Signatures

Detection of CryptoLocker Variants

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2828415587-3732861812-1919322417-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe N/A

Executes dropped EXE

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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 85.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 179.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 172.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 23.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp

Files

memory/4832-0-0x0000000000650000-0x0000000000656000-memory.dmp

memory/4832-1-0x0000000000650000-0x0000000000656000-memory.dmp

memory/4832-2-0x0000000000400000-0x0000000000406000-memory.dmp

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

MD5 e0671dc105ee61eced488bee1c94ba8e
SHA1 465f8db788448669dfc029e9ecbedfea1f48dc57
SHA256 b62698acab5cbb076c858f01c4247c26d630c79fea5c34dda92dfed4fae58643
SHA512 9f06ab205dfd92c2bac1a801d9f278cb23cfa341510d839b08244285885f1472e97c74a54e040e1cbfb94b3d0a932485ac4da461c90c307bd7eca99ebd7af616

memory/5016-21-0x00000000006F0000-0x00000000006F6000-memory.dmp