Malware Analysis Report

2025-08-05 09:42

Sample ID 240611-bke4ysyepm
Target 2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_cryptolocker
SHA256 c8a5d40b1a9548080cb7b746f234ccb4bc0d2407b50705d0437794bcf4d37d0d
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

c8a5d40b1a9548080cb7b746f234ccb4bc0d2407b50705d0437794bcf4d37d0d

Threat Level: Known bad

The file 2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

Detection of Cryptolocker Samples

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)

Checks computer location settings

UPX packed file

Loads dropped DLL

Executes dropped EXE

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-11 01:11

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 01:11

Reported

2024-06-11 01:14

Platform

win7-20240508-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_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_a16e6ad99f81f5aa87ce0a438160f661_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_a16e6ad99f81f5aa87ce0a438160f661_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_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/2412-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2412-1-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2412-9-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2412-2-0x0000000000480000-0x0000000000486000-memory.dmp

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

MD5 7c6832172360a2c9dd7492cecefd6fc1
SHA1 4c9bdbee035d9748d681556466b91cb6f99a4924
SHA256 0780d1f725fbc1b6d11380caa9c71f326366fd96955423eb0faf2a3b142ea1e0
SHA512 cc5905d93e48983765d341bd58f436c7b384836b1c396fb46d1102eb64b0bbce6e134ecdccd9bcc623158ae8cb6e290da3f0e058c51d7a92d06ad10a41341831

memory/2724-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2412-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2724-19-0x0000000000310000-0x0000000000316000-memory.dmp

memory/2724-26-0x00000000002D0000-0x00000000002D6000-memory.dmp

memory/2724-27-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-11 01:11

Reported

2024-06-11 01:14

Platform

win10v2004-20240426-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_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_a16e6ad99f81f5aa87ce0a438160f661_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_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 54.209.32.212:443 emrlogistics.com tcp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 48.110.63.41.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 52.71.57.184:443 emrlogistics.com tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 54.209.32.212:443 emrlogistics.com tcp
US 52.71.57.184:443 emrlogistics.com tcp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 54.209.32.212:443 emrlogistics.com tcp
US 52.71.57.184:443 emrlogistics.com tcp
US 54.209.32.212:443 emrlogistics.com tcp
US 52.71.57.184:443 emrlogistics.com tcp

Files

memory/2072-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2072-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

memory/2072-3-0x0000000000750000-0x0000000000756000-memory.dmp

memory/2072-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

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

MD5 7c6832172360a2c9dd7492cecefd6fc1
SHA1 4c9bdbee035d9748d681556466b91cb6f99a4924
SHA256 0780d1f725fbc1b6d11380caa9c71f326366fd96955423eb0faf2a3b142ea1e0
SHA512 cc5905d93e48983765d341bd58f436c7b384836b1c396fb46d1102eb64b0bbce6e134ecdccd9bcc623158ae8cb6e290da3f0e058c51d7a92d06ad10a41341831

memory/2072-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1612-18-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1612-20-0x0000000000840000-0x0000000000846000-memory.dmp

memory/1612-21-0x0000000002070000-0x0000000002076000-memory.dmp

memory/1612-27-0x0000000000500000-0x0000000000510000-memory.dmp