Malware Analysis Report

2025-08-10 21:45

Sample ID 240610-e91czach22
Target 2024-06-10_19c3eb939ebe5587e12f5429b99fd4b8_cryptolocker
SHA256 7a46913b08a642afb020f454221cc373ec69e2d01bf0277f4741a785b3f7748f
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

7a46913b08a642afb020f454221cc373ec69e2d01bf0277f4741a785b3f7748f

Threat Level: Known bad

The file 2024-06-10_19c3eb939ebe5587e12f5429b99fd4b8_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 UnmapMainImage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-10 04:39

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

2024-06-10 04:39

Reported

2024-06-10 04:41

Platform

win7-20240221-en

Max time kernel

120s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_19c3eb939ebe5587e12f5429b99fd4b8_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\2024-06-10_19c3eb939ebe5587e12f5429b99fd4b8_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-10_19c3eb939ebe5587e12f5429b99fd4b8_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_19c3eb939ebe5587e12f5429b99fd4b8_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/1340-8-0x0000000000370000-0x0000000000376000-memory.dmp

memory/1340-1-0x0000000000400000-0x0000000000406000-memory.dmp

memory/1340-0-0x0000000000370000-0x0000000000376000-memory.dmp

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

MD5 f98a52514e9b516189538c7c20d99e18
SHA1 8b0c89bade776f64c05845e917bc911ab316514c
SHA256 6712790403b2981a9b66f0e9fbad8903ef90d18c8e27d3a1a0eb3ff6fac020d1
SHA512 616fef4fe7118d7b0e529e4cc3ec4b24ae0e3372aa224576171d5a4641a7f5fabf4a8165bd6b58b99320d551f277a22cfb3c3581452128483d31b510480c2448

memory/2552-23-0x0000000000280000-0x0000000000286000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-10 04:39

Reported

2024-06-10 04:41

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_19c3eb939ebe5587e12f5429b99fd4b8_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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-10_19c3eb939ebe5587e12f5429b99fd4b8_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\2024-06-10_19c3eb939ebe5587e12f5429b99fd4b8_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_19c3eb939ebe5587e12f5429b99fd4b8_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 154.239.44.20.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 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.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 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 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.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

Files

memory/4808-0-0x00000000020E0000-0x00000000020E6000-memory.dmp

memory/4808-1-0x0000000000400000-0x0000000000406000-memory.dmp

memory/4808-8-0x00000000020E0000-0x00000000020E6000-memory.dmp

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

MD5 f98a52514e9b516189538c7c20d99e18
SHA1 8b0c89bade776f64c05845e917bc911ab316514c
SHA256 6712790403b2981a9b66f0e9fbad8903ef90d18c8e27d3a1a0eb3ff6fac020d1
SHA512 616fef4fe7118d7b0e529e4cc3ec4b24ae0e3372aa224576171d5a4641a7f5fabf4a8165bd6b58b99320d551f277a22cfb3c3581452128483d31b510480c2448

memory/3920-25-0x0000000000600000-0x0000000000606000-memory.dmp