Malware Analysis Report

2024-10-23 22:31

Sample ID 240613-nx1bwaxcre
Target 2024-06-13_68f9b80fa62126d747afb496d4d6e20b_cryptolocker
SHA256 493e847e11da2f138088b71f0f6e7be58a5f131c6aa6a7c688cd233d5e4d8cd5
Tags
upx
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

493e847e11da2f138088b71f0f6e7be58a5f131c6aa6a7c688cd233d5e4d8cd5

Threat Level: Known bad

The file 2024-06-13_68f9b80fa62126d747afb496d4d6e20b_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

Checks computer location settings

UPX packed file

Executes dropped EXE

Loads dropped DLL

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-13 11:47

Signatures

Detection of CryptoLocker Variants

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-13 11:47

Reported

2024-06-13 11:49

Platform

win7-20240611-en

Max time kernel

149s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_68f9b80fa62126d747afb496d4d6e20b_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

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

Executes dropped EXE

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-13_68f9b80fa62126d747afb496d4d6e20b_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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_68f9b80fa62126d747afb496d4d6e20b_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_68f9b80fa62126d747afb496d4d6e20b_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 2ndry.com udp

Files

memory/1556-0-0x0000000008000000-0x000000000800F000-memory.dmp

memory/1556-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/1556-2-0x0000000000460000-0x0000000000466000-memory.dmp

memory/1556-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

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

MD5 42b86aff9b7d65e56d1171f88a7e2db8
SHA1 2aeebef86d6080f0296a3e342bf9f80b63907611
SHA256 8c3ab61c7c6d6b07aebc82db53a138d14acd2a63ceb02ec2d655b6f328b17202
SHA512 ea0e058c91ccf5e433cde8d92bd7bf4d028137924130013c351f3116ba6fc678097dcae7c1c2a8cd670150ee2ebdbeadea44ec66c824c32bcb45cee856674ba5

memory/1556-15-0x0000000008000000-0x000000000800F000-memory.dmp

memory/2440-16-0x0000000008000000-0x000000000800F000-memory.dmp

memory/2440-18-0x00000000001D0000-0x00000000001D6000-memory.dmp

memory/2440-19-0x0000000000290000-0x0000000000296000-memory.dmp

memory/2440-26-0x0000000008000000-0x000000000800F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 11:47

Reported

2024-06-13 11:49

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_68f9b80fa62126d747afb496d4d6e20b_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

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

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_68f9b80fa62126d747afb496d4d6e20b_cryptolocker.exe N/A

Executes dropped EXE

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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_68f9b80fa62126d747afb496d4d6e20b_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_68f9b80fa62126d747afb496d4d6e20b_cryptolocker.exe"

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

"C:\Users\Admin\AppData\Local\Temp\lossy.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 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp

Files

memory/776-0-0x0000000008000000-0x000000000800F000-memory.dmp

memory/776-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

memory/776-2-0x0000000002100000-0x0000000002106000-memory.dmp

memory/776-9-0x00000000005B0000-0x00000000005B6000-memory.dmp

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

MD5 42b86aff9b7d65e56d1171f88a7e2db8
SHA1 2aeebef86d6080f0296a3e342bf9f80b63907611
SHA256 8c3ab61c7c6d6b07aebc82db53a138d14acd2a63ceb02ec2d655b6f328b17202
SHA512 ea0e058c91ccf5e433cde8d92bd7bf4d028137924130013c351f3116ba6fc678097dcae7c1c2a8cd670150ee2ebdbeadea44ec66c824c32bcb45cee856674ba5

memory/776-17-0x0000000008000000-0x000000000800F000-memory.dmp

memory/4048-18-0x0000000008000000-0x000000000800F000-memory.dmp

memory/4048-20-0x0000000000640000-0x0000000000646000-memory.dmp

memory/4048-26-0x0000000000590000-0x0000000000596000-memory.dmp

memory/4048-27-0x0000000008000000-0x000000000800F000-memory.dmp