Malware Analysis Report

2025-06-16 07:17

Sample ID 240531-2cfzdsff3t
Target 2024-05-31_1d2087291728af8bc7c882bd394c74f1_cryptolocker
SHA256 3d4b4acfa93194df86e5322601488ffa1559b7c41629c130833260088ede6794
Tags
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

3d4b4acfa93194df86e5322601488ffa1559b7c41629c130833260088ede6794

Threat Level: Known bad

The file 2024-05-31_1d2087291728af8bc7c882bd394c74f1_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

UPX dump on OEP (original entry point)

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-31 22:25

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

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-31 22:25

Reported

2024-05-31 22:28

Platform

win7-20240221-en

Max time kernel

148s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_1d2087291728af8bc7c882bd394c74f1_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

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
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\2024-05-31_1d2087291728af8bc7c882bd394c74f1_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-31_1d2087291728af8bc7c882bd394c74f1_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_1d2087291728af8bc7c882bd394c74f1_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 3.19.116.195:443 emrlogistics.com tcp
US 3.18.7.81:443 emrlogistics.com tcp
US 3.19.116.195:443 emrlogistics.com tcp
US 3.18.7.81:443 emrlogistics.com tcp
US 3.19.116.195:443 emrlogistics.com tcp
US 3.18.7.81:443 emrlogistics.com tcp
US 3.19.116.195:443 emrlogistics.com tcp
US 3.18.7.81:443 emrlogistics.com tcp

Files

memory/856-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/856-1-0x0000000000230000-0x0000000000236000-memory.dmp

memory/856-2-0x00000000002B0000-0x00000000002B6000-memory.dmp

memory/856-9-0x0000000000230000-0x0000000000236000-memory.dmp

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

MD5 be76d5a325a41ea58caa03102971e7e1
SHA1 0f9234a782a5d505e585d5b4bf07830dda683b24
SHA256 3126cfbac652dbc87c0d1627baf407dd8a10c5975190f2cf7cc7da5cbee2733b
SHA512 4b6f1357f9b64296ccf8bbc7f0dcc912813c59f03991d74f46618e245d6186819e727e384da64de426017ba0d4145a112b5b4b89c1b0c6b1070b1e3287808450

memory/856-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/280-18-0x00000000004C0000-0x00000000004C6000-memory.dmp

memory/280-25-0x0000000000250000-0x0000000000256000-memory.dmp

memory/280-26-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-31 22:25

Reported

2024-05-31 22:28

Platform

win10v2004-20240426-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_1d2087291728af8bc7c882bd394c74f1_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

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
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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-05-31_1d2087291728af8bc7c882bd394c74f1_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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-31_1d2087291728af8bc7c882bd394c74f1_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_1d2087291728af8bc7c882bd394c74f1_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 8.8.8.8:53 145.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 52.71.57.184:443 emrlogistics.com tcp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 54.209.32.212:443 emrlogistics.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
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
US 54.209.32.212:443 emrlogistics.com tcp
US 52.71.57.184:443 emrlogistics.com tcp
US 8.8.8.8:53 66.112.168.52.in-addr.arpa udp

Files

memory/2680-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2680-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

memory/2680-2-0x0000000002070000-0x0000000002076000-memory.dmp

memory/2680-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

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

MD5 be76d5a325a41ea58caa03102971e7e1
SHA1 0f9234a782a5d505e585d5b4bf07830dda683b24
SHA256 3126cfbac652dbc87c0d1627baf407dd8a10c5975190f2cf7cc7da5cbee2733b
SHA512 4b6f1357f9b64296ccf8bbc7f0dcc912813c59f03991d74f46618e245d6186819e727e384da64de426017ba0d4145a112b5b4b89c1b0c6b1070b1e3287808450

memory/2680-18-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2696-20-0x0000000000590000-0x0000000000596000-memory.dmp

memory/2696-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

memory/2696-27-0x0000000000500000-0x0000000000510000-memory.dmp