Malware Analysis Report

2025-01-18 12:57

Sample ID 240613-ez9tnaxfpr
Target 2024-06-13_17796d716e91697017ef0262b65e3522_cryptolocker
SHA256 785cb749072741e5d7a7e95762d34d4c0dd7c76999e0fb7041e41eb51fd74e24
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

785cb749072741e5d7a7e95762d34d4c0dd7c76999e0fb7041e41eb51fd74e24

Threat Level: Known bad

The file 2024-06-13_17796d716e91697017ef0262b65e3522_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-13 04:23

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 04:23

Reported

2024-06-13 04:26

Platform

win7-20240611-en

Max time kernel

148s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_17796d716e91697017ef0262b65e3522_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

Executes dropped EXE

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-13_17796d716e91697017ef0262b65e3522_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_17796d716e91697017ef0262b65e3522_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_17796d716e91697017ef0262b65e3522_cryptolocker.exe"

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

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

Network

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

Files

memory/2260-0-0x0000000008000000-0x000000000800A000-memory.dmp

memory/2260-1-0x0000000000290000-0x0000000000296000-memory.dmp

memory/2260-9-0x0000000000290000-0x0000000000296000-memory.dmp

memory/2260-2-0x00000000002B0000-0x00000000002B6000-memory.dmp

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

MD5 3759576387ef77df9d76b6d6f98859ea
SHA1 bd53a40ea655276a9470054c41ac99bec5f3f020
SHA256 98960f1745acdcfc7d66b11dc116213c6c1b6eee59fe2e466a7c33450f0b7b4a
SHA512 b48b1531852e62f4d16e803c79950ed77a59fd715bf4a01f82ff2c8b7e2a5841a64b1a2d1e4c62907fef9c65af034e76475bb45a8736069610aed9b43345d4f0

memory/2260-14-0x0000000008000000-0x000000000800A000-memory.dmp

memory/1152-17-0x0000000000320000-0x0000000000326000-memory.dmp

memory/1152-24-0x0000000000300000-0x0000000000306000-memory.dmp

memory/1152-25-0x0000000008000000-0x000000000800A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 04:23

Reported

2024-06-13 04:26

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_17796d716e91697017ef0262b65e3522_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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-13_17796d716e91697017ef0262b65e3522_cryptolocker.exe N/A

Executes dropped EXE

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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_17796d716e91697017ef0262b65e3522_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_17796d716e91697017ef0262b65e3522_cryptolocker.exe"

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

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

Network

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

Files

memory/2604-0-0x0000000008000000-0x000000000800A000-memory.dmp

memory/2604-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

memory/2604-2-0x0000000003150000-0x0000000003156000-memory.dmp

memory/2604-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

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

MD5 3759576387ef77df9d76b6d6f98859ea
SHA1 bd53a40ea655276a9470054c41ac99bec5f3f020
SHA256 98960f1745acdcfc7d66b11dc116213c6c1b6eee59fe2e466a7c33450f0b7b4a
SHA512 b48b1531852e62f4d16e803c79950ed77a59fd715bf4a01f82ff2c8b7e2a5841a64b1a2d1e4c62907fef9c65af034e76475bb45a8736069610aed9b43345d4f0

memory/2116-17-0x0000000008000000-0x000000000800A000-memory.dmp

memory/2604-18-0x0000000008000000-0x000000000800A000-memory.dmp

memory/2116-20-0x0000000002150000-0x0000000002156000-memory.dmp

memory/2116-26-0x0000000002110000-0x0000000002116000-memory.dmp

memory/2116-27-0x0000000008000000-0x000000000800A000-memory.dmp