Malware Analysis Report

2025-06-16 07:06

Sample ID 240531-s9tgbadg42
Target 2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker
SHA256 57ac5ce79f88140eacbc77f0be273a7685e56314812068b625fd452cc13616c1
Tags
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

57ac5ce79f88140eacbc77f0be273a7685e56314812068b625fd452cc13616c1

Threat Level: Known bad

The file 2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Executes dropped EXE

Checks computer location settings

Loads dropped DLL

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-31 15:49

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: behavioral2

Detonation Overview

Submitted

2024-05-31 15:49

Reported

2024-05-31 15:52

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker.exe"

Signatures

Detection of CryptoLocker Variants

Description Indicator Process Target
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\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_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\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 88.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa 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 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 31.251.17.2.in-addr.arpa 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 8.8.8.8:53 106.90.14.23.in-addr.arpa 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 26.35.223.20.in-addr.arpa 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 31.243.111.52.in-addr.arpa 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 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 138.201.86.20.in-addr.arpa 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/3096-0-0x0000000002D60000-0x0000000002D66000-memory.dmp

memory/3096-2-0x0000000003010000-0x0000000003016000-memory.dmp

memory/3096-1-0x0000000002D60000-0x0000000002D66000-memory.dmp

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

MD5 4ce5ee58bab81c85040b65fb58e3475c
SHA1 743e24d5be123bb92a2d9049adb83c2e00b31429
SHA256 b96b7f46008804d229d68f9f6e0bfb6ab2828622864f44d99cb410e83196ac02
SHA512 1c2b95f7b07d6b148af3a4753924a337298e8af54d24c005e8cc56499731a1d17a74a8ba0a322c7393154c2b9cc2c944d4d5482c53cfd7f867db0cc382e911e4

memory/2272-23-0x0000000002210000-0x0000000002216000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-31 15:49

Reported

2024-05-31 15:52

Platform

win7-20240221-en

Max time kernel

150s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker.exe"

Signatures

Detection of CryptoLocker Variants

Description Indicator Process Target
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\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_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/1616-22-0x0000000000360000-0x0000000000366000-memory.dmp

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

MD5 4ce5ee58bab81c85040b65fb58e3475c
SHA1 743e24d5be123bb92a2d9049adb83c2e00b31429
SHA256 b96b7f46008804d229d68f9f6e0bfb6ab2828622864f44d99cb410e83196ac02
SHA512 1c2b95f7b07d6b148af3a4753924a337298e8af54d24c005e8cc56499731a1d17a74a8ba0a322c7393154c2b9cc2c944d4d5482c53cfd7f867db0cc382e911e4

memory/1616-15-0x0000000000380000-0x0000000000386000-memory.dmp

memory/2776-8-0x0000000000270000-0x0000000000276000-memory.dmp

memory/2776-1-0x0000000000350000-0x0000000000356000-memory.dmp

memory/2776-0-0x0000000000270000-0x0000000000276000-memory.dmp