Malware Analysis Report

2025-08-06 00:21

Sample ID 240611-btq8ksydqa
Target 2024-06-11_f70378e0cc1359fe1feaadc6df5c0a8f_cryptolocker
SHA256 c07b9815d241658c5388fb44aafac7d2a69bb46c57e8bd09faec098e1f96af3c
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

c07b9815d241658c5388fb44aafac7d2a69bb46c57e8bd09faec098e1f96af3c

Threat Level: Known bad

The file 2024-06-11_f70378e0cc1359fe1feaadc6df5c0a8f_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 Samples

Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

Detection of Cryptolocker Samples

Checks computer location settings

UPX packed file

Loads dropped DLL

Executes dropped EXE

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-11 01:26

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

Detection of Cryptolocker Samples

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

2024-06-11 01:26

Reported

2024-06-11 01:29

Platform

win7-20240221-en

Max time kernel

141s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_f70378e0cc1359fe1feaadc6df5c0a8f_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

Detection of Cryptolocker Samples

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\asih.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-11_f70378e0cc1359fe1feaadc6df5c0a8f_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\2024-06-11_f70378e0cc1359fe1feaadc6df5c0a8f_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_f70378e0cc1359fe1feaadc6df5c0a8f_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 emrlogistics.com udp
US 3.130.253.23:443 emrlogistics.com tcp
US 3.130.204.160:443 emrlogistics.com tcp
US 3.130.253.23:443 emrlogistics.com tcp
US 3.130.204.160:443 emrlogistics.com tcp
US 3.130.253.23:443 emrlogistics.com tcp
US 3.130.204.160:443 emrlogistics.com tcp
US 3.130.253.23:443 emrlogistics.com tcp

Files

memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2220-1-0x0000000000330000-0x0000000000336000-memory.dmp

memory/2220-2-0x0000000000460000-0x0000000000466000-memory.dmp

memory/2220-8-0x0000000000330000-0x0000000000336000-memory.dmp

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

MD5 8a07d44a5dc8be7ceb822de387f2a699
SHA1 227f1a4fd3e6b8735025480dedf4eec88f1a3060
SHA256 c8c21c5242417462e1d8d67525da937ac522d74eabf9a97a0283b3919938037e
SHA512 3bfec6a39476ca87e98aca86231fead727dd96c3fe1a82b961f153b941e317a621700f6aed877af5fce8ab00cb80968c00384144e8f2166b985bdd0ef752d8d8

memory/2220-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2000-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2000-19-0x0000000000370000-0x0000000000376000-memory.dmp

memory/2000-26-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2000-27-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-11 01:26

Reported

2024-06-11 01:29

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_f70378e0cc1359fe1feaadc6df5c0a8f_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

Detection of Cryptolocker Samples

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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-11_f70378e0cc1359fe1feaadc6df5c0a8f_cryptolocker.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\asih.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\2024-06-11_f70378e0cc1359fe1feaadc6df5c0a8f_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_f70378e0cc1359fe1feaadc6df5c0a8f_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp

Files

memory/840-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/840-1-0x0000000002050000-0x0000000002056000-memory.dmp

memory/840-2-0x0000000002070000-0x0000000002076000-memory.dmp

memory/840-9-0x0000000002050000-0x0000000002056000-memory.dmp

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

MD5 8a07d44a5dc8be7ceb822de387f2a699
SHA1 227f1a4fd3e6b8735025480dedf4eec88f1a3060
SHA256 c8c21c5242417462e1d8d67525da937ac522d74eabf9a97a0283b3919938037e
SHA512 3bfec6a39476ca87e98aca86231fead727dd96c3fe1a82b961f153b941e317a621700f6aed877af5fce8ab00cb80968c00384144e8f2166b985bdd0ef752d8d8

memory/840-19-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4848-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4848-21-0x0000000002100000-0x0000000002106000-memory.dmp

memory/4848-27-0x00000000006A0000-0x00000000006A6000-memory.dmp

memory/4848-28-0x0000000000500000-0x0000000000510000-memory.dmp