Malware Analysis Report

2025-01-18 14:34

Sample ID 240613-d8sfaswgpn
Target 2024-06-13_819980b814d29b3229fc4092e30a72d4_cryptolocker
SHA256 f3adf94240a3396e44bcc9475de611f93a10e3853681a2ad940361335563b2e1
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

f3adf94240a3396e44bcc9475de611f93a10e3853681a2ad940361335563b2e1

Threat Level: Known bad

The file 2024-06-13_819980b814d29b3229fc4092e30a72d4_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

UPX dump on OEP (original entry point)

Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

Checks computer location settings

Loads dropped DLL

UPX packed file

Executes dropped EXE

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-13 03:41

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 03:41

Reported

2024-06-13 03:43

Platform

win7-20240611-en

Max time kernel

148s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_819980b814d29b3229fc4092e30a72d4_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_819980b814d29b3229fc4092e30a72d4_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_819980b814d29b3229fc4092e30a72d4_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_819980b814d29b3229fc4092e30a72d4_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/1720-0-0x0000000008000000-0x000000000800F000-memory.dmp

memory/1720-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/1720-8-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/1720-2-0x0000000000300000-0x0000000000306000-memory.dmp

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

MD5 dcc0ebf18547f2056f5dfde1085d8f87
SHA1 c983c47824db1fd3fea09479720c14ab58ec42ca
SHA256 f8ce3c97cc199554c8184aa6d32f9b320d97ba40d4f1c6ad4090147c6ef6cd84
SHA512 c97affd66ec25cebaf3049b51defe906e5218c4adf110e6cd3c7f26044de762f7e758c17edc03ec4e04e5c07469d49a4f72cc54288e9dc7931941744556680a0

memory/2572-16-0x0000000008000000-0x000000000800F000-memory.dmp

memory/1720-14-0x0000000008000000-0x000000000800F000-memory.dmp

memory/2572-18-0x0000000000200000-0x0000000000206000-memory.dmp

memory/2572-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

memory/2572-26-0x0000000008000000-0x000000000800F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 03:41

Reported

2024-06-13 03:43

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_819980b814d29b3229fc4092e30a72d4_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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-13_819980b814d29b3229fc4092e30a72d4_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_819980b814d29b3229fc4092e30a72d4_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_819980b814d29b3229fc4092e30a72d4_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
US 8.8.8.8:53 2ndry.com udp

Files

memory/1892-0-0x0000000008000000-0x000000000800F000-memory.dmp

memory/1892-1-0x00000000005C0000-0x00000000005C6000-memory.dmp

memory/1892-3-0x0000000002060000-0x0000000002066000-memory.dmp

memory/1892-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

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

MD5 dcc0ebf18547f2056f5dfde1085d8f87
SHA1 c983c47824db1fd3fea09479720c14ab58ec42ca
SHA256 f8ce3c97cc199554c8184aa6d32f9b320d97ba40d4f1c6ad4090147c6ef6cd84
SHA512 c97affd66ec25cebaf3049b51defe906e5218c4adf110e6cd3c7f26044de762f7e758c17edc03ec4e04e5c07469d49a4f72cc54288e9dc7931941744556680a0

memory/1892-17-0x0000000008000000-0x000000000800F000-memory.dmp

memory/4852-18-0x0000000008000000-0x000000000800F000-memory.dmp

memory/4852-20-0x0000000000590000-0x0000000000596000-memory.dmp

memory/4852-26-0x0000000000490000-0x0000000000496000-memory.dmp

memory/4852-27-0x0000000008000000-0x000000000800F000-memory.dmp