Malware Analysis Report

2025-04-14 03:47

Sample ID 240612-sy76bstfpr
Target 2024-06-12_e4eb63de14f56983b365b68199cf2c4c_cryptolocker
SHA256 b8c87dea9554b06b87fd88d9d5f23f0dfc41368132cc2140054d75a16aa9d01d
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

b8c87dea9554b06b87fd88d9d5f23f0dfc41368132cc2140054d75a16aa9d01d

Threat Level: Known bad

The file 2024-06-12_e4eb63de14f56983b365b68199cf2c4c_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

UPX packed file

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-12 15:33

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

2024-06-12 15:33

Reported

2024-06-12 15:35

Platform

win7-20240221-en

Max time kernel

148s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_e4eb63de14f56983b365b68199cf2c4c_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
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
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
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\2024-06-12_e4eb63de14f56983b365b68199cf2c4c_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
N/A N/A N/A N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-12_e4eb63de14f56983b365b68199cf2c4c_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_e4eb63de14f56983b365b68199cf2c4c_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 3.140.13.188:443 emrlogistics.com tcp
US 18.119.154.66:443 emrlogistics.com tcp
US 3.140.13.188:443 emrlogistics.com tcp
US 18.119.154.66:443 emrlogistics.com tcp
US 3.140.13.188:443 emrlogistics.com tcp
US 18.119.154.66:443 emrlogistics.com tcp
US 3.140.13.188:443 emrlogistics.com tcp
US 18.119.154.66:443 emrlogistics.com tcp

Files

memory/2944-0-0x00000000002D0000-0x00000000002D6000-memory.dmp

memory/2944-1-0x0000000000500000-0x000000000050F000-memory.dmp

memory/2944-3-0x0000000000350000-0x0000000000356000-memory.dmp

memory/2944-9-0x00000000002D0000-0x00000000002D6000-memory.dmp

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

MD5 f04d9dfc405ac56785b70ff84c42a6dc
SHA1 08b536d2a6e137ed577a42ef6eb17aaa77ec7d2f
SHA256 5efb9147f1f46818f391bef8c7c4b479389215e7eecebb0719bf557f1ba7a3ae
SHA512 2743a208598f4c99c9dae1add0bf06edfade4f1621ae3acd16ee2060fe86b24563130f74d6d16c22dac99e5e5a295ec78c95f206cc9cbd3e0595146d4c56d822

memory/2944-13-0x0000000002270000-0x000000000227F000-memory.dmp

memory/2944-17-0x0000000000500000-0x000000000050F000-memory.dmp

memory/284-19-0x0000000000500000-0x000000000050F000-memory.dmp

memory/284-27-0x0000000000240000-0x0000000000246000-memory.dmp

memory/284-20-0x0000000000300000-0x0000000000306000-memory.dmp

memory/284-28-0x0000000000500000-0x000000000050F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-12 15:33

Reported

2024-06-12 15:35

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_e4eb63de14f56983b365b68199cf2c4c_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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-12_e4eb63de14f56983b365b68199cf2c4c_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\2024-06-12_e4eb63de14f56983b365b68199cf2c4c_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_e4eb63de14f56983b365b68199cf2c4c_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
US 8.8.8.8:53 emrlogistics.com udp

Files

memory/3068-0-0x0000000000500000-0x000000000050F000-memory.dmp

memory/3068-1-0x0000000000630000-0x0000000000636000-memory.dmp

memory/3068-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

memory/3068-9-0x0000000000630000-0x0000000000636000-memory.dmp

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

MD5 f04d9dfc405ac56785b70ff84c42a6dc
SHA1 08b536d2a6e137ed577a42ef6eb17aaa77ec7d2f
SHA256 5efb9147f1f46818f391bef8c7c4b479389215e7eecebb0719bf557f1ba7a3ae
SHA512 2743a208598f4c99c9dae1add0bf06edfade4f1621ae3acd16ee2060fe86b24563130f74d6d16c22dac99e5e5a295ec78c95f206cc9cbd3e0595146d4c56d822

memory/436-16-0x0000000000500000-0x000000000050F000-memory.dmp

memory/436-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/3068-18-0x0000000000500000-0x000000000050F000-memory.dmp

memory/436-27-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/436-28-0x0000000000500000-0x000000000050F000-memory.dmp