Malware Analysis Report

2025-08-11 06:10

Sample ID 240610-1l62hasdll
Target 2024-06-10_fa380a76cceb9950a6d99b32c43a8ef0_cryptolocker
SHA256 79b5755194e74f9ab5d0ced5faf07fe921f565ebcb8723c7557568e176772b0d
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

79b5755194e74f9ab5d0ced5faf07fe921f565ebcb8723c7557568e176772b0d

Threat Level: Known bad

The file 2024-06-10_fa380a76cceb9950a6d99b32c43a8ef0_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)

Executes dropped EXE

Loads dropped DLL

UPX packed file

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-10 21:45

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

2024-06-10 21:45

Reported

2024-06-10 21:47

Platform

win7-20240508-en

Max time kernel

144s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_fa380a76cceb9950a6d99b32c43a8ef0_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

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

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\2024-06-10_fa380a76cceb9950a6d99b32c43a8ef0_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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-10_fa380a76cceb9950a6d99b32c43a8ef0_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_fa380a76cceb9950a6d99b32c43a8ef0_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
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/2180-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/2180-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/2180-8-0x0000000008000000-0x000000000800F000-memory.dmp

memory/2180-1-0x0000000000380000-0x0000000000386000-memory.dmp

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

MD5 2dd375eeb03202c8bcf947ffa8ba88c9
SHA1 5472e469a5835f4ba9f2ee8d92899687a57be5c0
SHA256 4aee567c994c8ef96cd87ced07245c85e5d8da4e8833a4989a016d2f9e3392cb
SHA512 0994d8cda11384498a85eadcdd09591043ae567105a49a3a694ce49db890ae8cfa6d3c4d87beafbe88122422faf6ee17b3aff78577b44b52076808bd2dca9469

memory/2164-15-0x0000000008000000-0x000000000800F000-memory.dmp

memory/2164-17-0x0000000000350000-0x0000000000356000-memory.dmp

memory/2164-24-0x00000000002D0000-0x00000000002D6000-memory.dmp

memory/2164-25-0x0000000008000000-0x000000000800F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-10 21:45

Reported

2024-06-10 21:47

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_fa380a76cceb9950a6d99b32c43a8ef0_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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-10_fa380a76cceb9950a6d99b32c43a8ef0_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\2024-06-10_fa380a76cceb9950a6d99b32c43a8ef0_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_fa380a76cceb9950a6d99b32c43a8ef0_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
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/4412-0-0x0000000008000000-0x000000000800F000-memory.dmp

memory/4412-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

memory/4412-2-0x00000000005D0000-0x00000000005D6000-memory.dmp

memory/4412-9-0x00000000005A0000-0x00000000005A6000-memory.dmp

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

MD5 2dd375eeb03202c8bcf947ffa8ba88c9
SHA1 5472e469a5835f4ba9f2ee8d92899687a57be5c0
SHA256 4aee567c994c8ef96cd87ced07245c85e5d8da4e8833a4989a016d2f9e3392cb
SHA512 0994d8cda11384498a85eadcdd09591043ae567105a49a3a694ce49db890ae8cfa6d3c4d87beafbe88122422faf6ee17b3aff78577b44b52076808bd2dca9469

memory/4412-17-0x0000000008000000-0x000000000800F000-memory.dmp

memory/1936-16-0x0000000008000000-0x000000000800F000-memory.dmp

memory/1936-20-0x00000000005B0000-0x00000000005B6000-memory.dmp

memory/1936-26-0x0000000000590000-0x0000000000596000-memory.dmp

memory/1936-27-0x0000000008000000-0x000000000800F000-memory.dmp