Malware Analysis Report

2025-08-11 06:11

Sample ID 240610-1h285s1fqc
Target 2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker
SHA256 8e7f65b7757f2c5dd10e43bb62e88531d6d6e9d4e293ee7b6133befffe24a178
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

8e7f65b7757f2c5dd10e43bb62e88531d6d6e9d4e293ee7b6133befffe24a178

Threat Level: Known bad

The file 2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_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

2024-06-10 21:39

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

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
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-10 21:39

Reported

2024-06-10 21:42

Platform

win7-20240419-en

Max time kernel

144s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_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\hasfj.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_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\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_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

Files

memory/1704-0-0x0000000008000000-0x000000000800E000-memory.dmp

memory/1704-1-0x0000000000430000-0x0000000000436000-memory.dmp

memory/1704-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

memory/1704-9-0x0000000000430000-0x0000000000436000-memory.dmp

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

MD5 f58d74c8d2bf1cf499c288fc12f51c8a
SHA1 ed63d8015129e3dfbe498d9713179062a98393c8
SHA256 12917caeba52726a1fc9fe5ebd292c84e61b172825097654a2ab8749254a431f
SHA512 9a30f01a54b1e1a271f14323b8e95785c27356e94aaca7582f1a054f0209e9fc3d9d0c8e8f49b0c314ab3ad117b918493b8e1cfc4b7ae2841a5ff8c357ca1a00

memory/1704-15-0x0000000008000000-0x000000000800E000-memory.dmp

memory/2864-17-0x0000000008000000-0x000000000800E000-memory.dmp

memory/2864-19-0x0000000000370000-0x0000000000376000-memory.dmp

memory/2864-26-0x00000000002D0000-0x00000000002D6000-memory.dmp

memory/2864-27-0x0000000008000000-0x000000000800E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-10 21:39

Reported

2024-06-10 21:42

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_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

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_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_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/4676-0-0x0000000008000000-0x000000000800E000-memory.dmp

memory/4676-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

memory/4676-2-0x0000000003150000-0x0000000003156000-memory.dmp

memory/4676-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

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

MD5 f58d74c8d2bf1cf499c288fc12f51c8a
SHA1 ed63d8015129e3dfbe498d9713179062a98393c8
SHA256 12917caeba52726a1fc9fe5ebd292c84e61b172825097654a2ab8749254a431f
SHA512 9a30f01a54b1e1a271f14323b8e95785c27356e94aaca7582f1a054f0209e9fc3d9d0c8e8f49b0c314ab3ad117b918493b8e1cfc4b7ae2841a5ff8c357ca1a00

memory/4676-18-0x0000000008000000-0x000000000800E000-memory.dmp

memory/220-19-0x0000000008000000-0x000000000800E000-memory.dmp

memory/220-21-0x0000000003010000-0x0000000003016000-memory.dmp

memory/220-27-0x0000000002D60000-0x0000000002D66000-memory.dmp

memory/220-28-0x0000000008000000-0x000000000800E000-memory.dmp