Malware Analysis Report

2025-01-18 14:19

Sample ID 240613-d1h7nawepj
Target 2024-06-13_2d8511be028bdc6a2f02b6386a08d57e_cryptolocker
SHA256 efc1e61decd3e62cd907c4bd0e86a4fb8377b19ccb581a28014838150fb93932
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

efc1e61decd3e62cd907c4bd0e86a4fb8377b19ccb581a28014838150fb93932

Threat Level: Known bad

The file 2024-06-13_2d8511be028bdc6a2f02b6386a08d57e_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Enumerates physical storage devices

Unsigned PE

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-13 03:28

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

2024-06-13 03:28

Reported

2024-06-13 03:30

Platform

win7-20240419-en

Max time kernel

148s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_2d8511be028bdc6a2f02b6386a08d57e_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\2024-06-13_2d8511be028bdc6a2f02b6386a08d57e_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_2d8511be028bdc6a2f02b6386a08d57e_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_2d8511be028bdc6a2f02b6386a08d57e_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
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

Files

memory/2460-0-0x00000000004B0000-0x00000000004B6000-memory.dmp

memory/2460-1-0x0000000000400000-0x0000000000406000-memory.dmp

memory/2460-8-0x00000000004B0000-0x00000000004B6000-memory.dmp

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

MD5 b04956f8112037b7b7de77ec7c72eb64
SHA1 74ad9acca7f59abfc8a757a7f71da46ab140530e
SHA256 7ab8c9980bb340510ca56e58a545c7ec58fd8d4184f6d6ca6b9a61a33567b63c
SHA512 f4c275c58221ce86af0ef7be6aaa828011edd2f4e9b3625c05df4a0e2d11a67039ece02f166378473ab1ed57b581244ff94dfc57bca92cc2bc60f18c44b9c246

memory/2836-23-0x00000000005C0000-0x00000000005C6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 03:28

Reported

2024-06-13 03:30

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_2d8511be028bdc6a2f02b6386a08d57e_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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-13_2d8511be028bdc6a2f02b6386a08d57e_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\2024-06-13_2d8511be028bdc6a2f02b6386a08d57e_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_2d8511be028bdc6a2f02b6386a08d57e_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 8.8.8.8.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 storage-cabinets.info udp

Files

memory/2560-0-0x0000000002160000-0x0000000002166000-memory.dmp

memory/2560-1-0x0000000000400000-0x0000000000406000-memory.dmp

memory/2560-8-0x0000000002160000-0x0000000002166000-memory.dmp

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

MD5 b04956f8112037b7b7de77ec7c72eb64
SHA1 74ad9acca7f59abfc8a757a7f71da46ab140530e
SHA256 7ab8c9980bb340510ca56e58a545c7ec58fd8d4184f6d6ca6b9a61a33567b63c
SHA512 f4c275c58221ce86af0ef7be6aaa828011edd2f4e9b3625c05df4a0e2d11a67039ece02f166378473ab1ed57b581244ff94dfc57bca92cc2bc60f18c44b9c246

memory/2292-25-0x0000000002D60000-0x0000000002D66000-memory.dmp