Malware Analysis Report

2025-04-14 02:23

Sample ID 240603-mn36qsbe8x
Target 2024-06-03_b059feefd4be7876afc2800ac753c66d_cryptolocker
SHA256 e66008e42ee31205f3f37a7f2e506882b81f1c5b8f5f0a5871c0391f466bd2eb
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

e66008e42ee31205f3f37a7f2e506882b81f1c5b8f5f0a5871c0391f466bd2eb

Threat Level: Known bad

The file 2024-06-03_b059feefd4be7876afc2800ac753c66d_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

Executes dropped EXE

Checks computer location settings

Loads dropped DLL

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-03 10:37

Signatures

Detection of CryptoLocker Variants

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

Detection of Cryptolocker Samples

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

2024-06-03 10:37

Reported

2024-06-03 10:40

Platform

win7-20240215-en

Max time kernel

148s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_b059feefd4be7876afc2800ac753c66d_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
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\2024-06-03_b059feefd4be7876afc2800ac753c66d_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-03_b059feefd4be7876afc2800ac753c66d_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_b059feefd4be7876afc2800ac753c66d_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 34.205.242.146:443 emrlogistics.com tcp
US 54.161.222.85:443 emrlogistics.com tcp
US 34.205.242.146:443 emrlogistics.com tcp
US 54.161.222.85:443 emrlogistics.com tcp
US 34.205.242.146:443 emrlogistics.com tcp
US 54.161.222.85:443 emrlogistics.com tcp
US 34.205.242.146:443 emrlogistics.com tcp
US 54.161.222.85:443 emrlogistics.com tcp

Files

memory/1804-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

memory/1804-1-0x0000000000500000-0x000000000050B000-memory.dmp

memory/1804-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

memory/1804-3-0x0000000000530000-0x0000000000536000-memory.dmp

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

MD5 da6af41a571a40bb4a62be7a3509e86d
SHA1 9a7805c38990bcbe2f90e27fa152ac78c6b3e94f
SHA256 709f8c0ae0e28ba86377a855da0dfe561803c1a035a49ab703600dd9cd997d27
SHA512 7dedbf349b8bbe7880027bda9e49f335e6cee3005ece8771d11e6601be4c5f6d813528ad34297d64f68e3b37d99447e5d0017a777399012f3b102a6e4c03bed7

memory/1804-14-0x0000000000500000-0x000000000050B000-memory.dmp

memory/3068-17-0x0000000000380000-0x0000000000386000-memory.dmp

memory/3068-24-0x0000000000500000-0x000000000050B000-memory.dmp

memory/3068-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-03 10:37

Reported

2024-06-03 10:40

Platform

win10v2004-20240426-en

Max time kernel

150s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_b059feefd4be7876afc2800ac753c66d_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
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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-03_b059feefd4be7876afc2800ac753c66d_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\2024-06-03_b059feefd4be7876afc2800ac753c66d_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_b059feefd4be7876afc2800ac753c66d_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 52.86.6.113:443 emrlogistics.com tcp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 2.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 3.94.41.167:443 emrlogistics.com tcp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 52.86.6.113:443 emrlogistics.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 3.94.41.167:443 emrlogistics.com tcp
US 52.86.6.113:443 emrlogistics.com tcp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 3.94.41.167:443 emrlogistics.com tcp
US 52.86.6.113:443 emrlogistics.com tcp
US 3.94.41.167:443 emrlogistics.com tcp
US 8.8.8.8:53 udp

Files

memory/1324-0-0x0000000000500000-0x000000000050B000-memory.dmp

memory/1324-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

memory/1324-2-0x0000000002090000-0x0000000002096000-memory.dmp

memory/1324-9-0x00000000006B0000-0x00000000006B6000-memory.dmp

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

MD5 da6af41a571a40bb4a62be7a3509e86d
SHA1 9a7805c38990bcbe2f90e27fa152ac78c6b3e94f
SHA256 709f8c0ae0e28ba86377a855da0dfe561803c1a035a49ab703600dd9cd997d27
SHA512 7dedbf349b8bbe7880027bda9e49f335e6cee3005ece8771d11e6601be4c5f6d813528ad34297d64f68e3b37d99447e5d0017a777399012f3b102a6e4c03bed7

memory/1324-17-0x0000000000500000-0x000000000050B000-memory.dmp

memory/2044-19-0x0000000000650000-0x0000000000656000-memory.dmp

memory/2044-25-0x0000000000630000-0x0000000000636000-memory.dmp

memory/2044-26-0x0000000000500000-0x000000000050B000-memory.dmp