Malware Analysis Report

2025-08-05 09:42

Sample ID 240611-bmmltayfqj
Target 2024-06-11_b408293ae4f662d45be20e4c9b16a66c_cryptolocker
SHA256 325d5d71d46e770dc4a7f29385707e8639899ec2c141165f2bc2a92f948e0b6e
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

325d5d71d46e770dc4a7f29385707e8639899ec2c141165f2bc2a92f948e0b6e

Threat Level: Known bad

The file 2024-06-11_b408293ae4f662d45be20e4c9b16a66c_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

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

UPX packed file

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-11 01:15

Signatures

Detection of CryptoLocker Variants

Description Indicator Process Target
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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-11 01:15

Reported

2024-06-11 01:18

Platform

win7-20240508-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_b408293ae4f662d45be20e4c9b16a66c_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

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\2024-06-11_b408293ae4f662d45be20e4c9b16a66c_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\2024-06-11_b408293ae4f662d45be20e4c9b16a66c_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_b408293ae4f662d45be20e4c9b16a66c_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 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/1660-0-0x0000000000500000-0x000000000050F000-memory.dmp

memory/1660-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

memory/1660-2-0x0000000000290000-0x0000000000296000-memory.dmp

memory/1660-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

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

MD5 b71e30ee47624a6b12bf395af03d480c
SHA1 3b5ff85d6dcb6e9a09d05ceda68561477693677c
SHA256 45eabb473c1dfd56b8c02bd60177d475cd403d5d63e8dff9dd2794abc9bb94ad
SHA512 a91a2d088e308fa538c27d764f7b2cabf8389912ac468b31bd7c1025c99dec3d01b5362f29a167dbf637740badc7b60b05d81b444977b4f3277367a771cde4d8

memory/1660-13-0x0000000002740000-0x000000000274F000-memory.dmp

memory/2368-18-0x0000000000500000-0x000000000050F000-memory.dmp

memory/1660-17-0x0000000000500000-0x000000000050F000-memory.dmp

memory/2368-20-0x0000000000470000-0x0000000000476000-memory.dmp

memory/2368-27-0x0000000000430000-0x0000000000436000-memory.dmp

memory/2368-28-0x0000000000500000-0x000000000050F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-11 01:15

Reported

2024-06-11 01:18

Platform

win10v2004-20240426-en

Max time kernel

148s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_b408293ae4f662d45be20e4c9b16a66c_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

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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-11_b408293ae4f662d45be20e4c9b16a66c_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_b408293ae4f662d45be20e4c9b16a66c_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_b408293ae4f662d45be20e4c9b16a66c_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 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 emrlogistics.com udp
US 3.130.204.160:443 emrlogistics.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 3.130.253.23:443 emrlogistics.com tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 3.130.204.160:443 emrlogistics.com tcp
US 8.8.8.8:53 56.110.63.41.in-addr.arpa udp
US 3.130.253.23:443 emrlogistics.com tcp
US 3.130.204.160:443 emrlogistics.com tcp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa 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

Files

memory/4576-0-0x0000000000500000-0x000000000050F000-memory.dmp

memory/4576-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/4576-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/4576-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

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

MD5 b71e30ee47624a6b12bf395af03d480c
SHA1 3b5ff85d6dcb6e9a09d05ceda68561477693677c
SHA256 45eabb473c1dfd56b8c02bd60177d475cd403d5d63e8dff9dd2794abc9bb94ad
SHA512 a91a2d088e308fa538c27d764f7b2cabf8389912ac468b31bd7c1025c99dec3d01b5362f29a167dbf637740badc7b60b05d81b444977b4f3277367a771cde4d8

memory/400-18-0x0000000000500000-0x000000000050F000-memory.dmp

memory/4576-17-0x0000000000500000-0x000000000050F000-memory.dmp

memory/400-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

memory/400-26-0x00000000005B0000-0x00000000005B6000-memory.dmp

memory/400-27-0x0000000000500000-0x000000000050F000-memory.dmp