Malware Analysis Report

2025-04-14 04:37

Sample ID 240612-vqz6vssepf
Target 2024-06-12_90f6766a46b3df081a75420ddae5ee49_cryptolocker
SHA256 25aea726f37bc9d0f7faf4d9ff77b8a5a245f4ddbc9e067d2c9e51b1a10f09ed
Tags
upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

25aea726f37bc9d0f7faf4d9ff77b8a5a245f4ddbc9e067d2c9e51b1a10f09ed

Threat Level: Known bad

The file 2024-06-12_90f6766a46b3df081a75420ddae5ee49_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

Checks computer location settings

Executes dropped EXE

UPX packed file

Loads dropped DLL

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-12 17:12

Signatures

Detection of CryptoLocker Variants

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

Detection of Cryptolocker Samples

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

UPX dump on OEP (original entry point)

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

UPX packed file

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-12 17:12

Reported

2024-06-12 17:14

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_90f6766a46b3df081a75420ddae5ee49_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

Detection of Cryptolocker Samples

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

UPX dump on OEP (original entry point)

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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-12_90f6766a46b3df081a75420ddae5ee49_cryptolocker.exe N/A

Executes dropped EXE

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

UPX packed file

upx
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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-12_90f6766a46b3df081a75420ddae5ee49_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_90f6766a46b3df081a75420ddae5ee49_cryptolocker.exe"

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

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

Network

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

Files

memory/944-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/944-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/944-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/944-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

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

MD5 5e1e9f81314314e24a6b385ce639fb08
SHA1 968895b88e7f9e3ebb05ea831a63671bfd138824
SHA256 788ec95743f58966f7dd61b8df1614cfe818b824d57ad6029f2f640031b4b3ea
SHA512 653201612e5fc83abba6e36b85b6dc5e17951451a5ada07aaf2ab7723d9fd1dabb89ab6056390d093bf679e6454b64d2f5ecb94deee83eeffc287f9ad8e5f89f

memory/944-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2400-19-0x0000000000630000-0x0000000000636000-memory.dmp

memory/2400-20-0x0000000000660000-0x0000000000666000-memory.dmp

memory/2400-26-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-12 17:12

Reported

2024-06-12 17:14

Platform

win7-20240508-en

Max time kernel

144s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_90f6766a46b3df081a75420ddae5ee49_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
N/A N/A N/A N/A

Detection of Cryptolocker Samples

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
N/A N/A N/A N/A

UPX dump on OEP (original entry point)

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
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\misid.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-12_90f6766a46b3df081a75420ddae5ee49_cryptolocker.exe N/A

UPX packed file

upx
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
N/A N/A N/A N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-12_90f6766a46b3df081a75420ddae5ee49_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_90f6766a46b3df081a75420ddae5ee49_cryptolocker.exe"

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

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

Network

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

Files

memory/1964-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1964-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

memory/1964-9-0x00000000002D0000-0x00000000002D6000-memory.dmp

memory/1964-2-0x0000000000310000-0x0000000000316000-memory.dmp

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

MD5 5e1e9f81314314e24a6b385ce639fb08
SHA1 968895b88e7f9e3ebb05ea831a63671bfd138824
SHA256 788ec95743f58966f7dd61b8df1614cfe818b824d57ad6029f2f640031b4b3ea
SHA512 653201612e5fc83abba6e36b85b6dc5e17951451a5ada07aaf2ab7723d9fd1dabb89ab6056390d093bf679e6454b64d2f5ecb94deee83eeffc287f9ad8e5f89f

memory/1964-13-0x0000000000680000-0x0000000000690000-memory.dmp

memory/2604-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1964-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2604-26-0x00000000001D0000-0x00000000001D6000-memory.dmp

memory/2604-19-0x0000000000210000-0x0000000000216000-memory.dmp

memory/2604-27-0x0000000000500000-0x0000000000510000-memory.dmp