Malware Analysis Report

2025-04-14 04:17

Sample ID 240609-jetzxsff7s
Target 2024-06-09_e39669415f908c3c7975f2977e207ca7_cryptolocker
SHA256 21fbbb42740331a233b03f870b5f6569da8e4bd3685a780cd4360b9cfc02fe65
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

21fbbb42740331a233b03f870b5f6569da8e4bd3685a780cd4360b9cfc02fe65

Threat Level: Known bad

The file 2024-06-09_e39669415f908c3c7975f2977e207ca7_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

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

2024-06-09 07:35

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

2024-06-09 07:35

Reported

2024-06-09 07:38

Platform

win7-20240221-en

Max time kernel

133s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-09_e39669415f908c3c7975f2977e207ca7_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

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\2024-06-09_e39669415f908c3c7975f2977e207ca7_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-09_e39669415f908c3c7975f2977e207ca7_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-09_e39669415f908c3c7975f2977e207ca7_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

Files

memory/1640-0-0x0000000000500000-0x000000000050B000-memory.dmp

memory/1640-1-0x0000000000420000-0x0000000000426000-memory.dmp

memory/1640-3-0x0000000000450000-0x0000000000456000-memory.dmp

memory/1640-2-0x0000000000420000-0x0000000000426000-memory.dmp

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

MD5 c9287127c7c06d1a0e3ab26a8f62903e
SHA1 0e09055b04abdd2c835b0fe5f480d00542edf193
SHA256 ab0a153fd3570efe34b2a6a115c9ee63213752f5cc6fb6e1b4002db321f446af
SHA512 896064ec8f5cb77f41a5a7b3d5426cb4065da447ce1d1ca581d702da97b2cd6d41198deecad0bef5732cd016c7b542250ddc62197456e890b62f18deda1ed6b0

memory/1640-14-0x0000000001FE0000-0x0000000001FEB000-memory.dmp

memory/2040-17-0x0000000000500000-0x000000000050B000-memory.dmp

memory/1640-16-0x0000000000500000-0x000000000050B000-memory.dmp

memory/2040-19-0x00000000002D0000-0x00000000002D6000-memory.dmp

memory/2040-20-0x0000000000340000-0x0000000000346000-memory.dmp

memory/2040-27-0x0000000000500000-0x000000000050B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-09 07:35

Reported

2024-06-09 07:38

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

157s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-09_e39669415f908c3c7975f2977e207ca7_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

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\2024-06-09_e39669415f908c3c7975f2977e207ca7_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\2024-06-09_e39669415f908c3c7975f2977e207ca7_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-09_e39669415f908c3c7975f2977e207ca7_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 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 emrlogistics.com udp
US 34.205.242.146:443 emrlogistics.com tcp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 54.161.222.85:443 emrlogistics.com tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa 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 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
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/4140-0-0x0000000000500000-0x000000000050B000-memory.dmp

memory/4140-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

memory/4140-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

memory/4140-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

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

MD5 c9287127c7c06d1a0e3ab26a8f62903e
SHA1 0e09055b04abdd2c835b0fe5f480d00542edf193
SHA256 ab0a153fd3570efe34b2a6a115c9ee63213752f5cc6fb6e1b4002db321f446af
SHA512 896064ec8f5cb77f41a5a7b3d5426cb4065da447ce1d1ca581d702da97b2cd6d41198deecad0bef5732cd016c7b542250ddc62197456e890b62f18deda1ed6b0

memory/736-17-0x0000000000500000-0x000000000050B000-memory.dmp

memory/4140-18-0x0000000000500000-0x000000000050B000-memory.dmp

memory/736-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/736-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/736-27-0x0000000000500000-0x000000000050B000-memory.dmp