Malware Analysis Report

2025-08-05 15:16

Sample ID 240825-hv3rbsshnl
Target 2024-08-25_e69aab1ac7b3fbc5f284b646c1ffbab8_cryptolocker
SHA256 a271790dcfcaed3d78124ca874c61fbf2b9a729f701199be1dbeab514cdfe2d4
Tags
discovery
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
7/10

SHA256

a271790dcfcaed3d78124ca874c61fbf2b9a729f701199be1dbeab514cdfe2d4

Threat Level: Shows suspicious behavior

The file 2024-08-25_e69aab1ac7b3fbc5f284b646c1ffbab8_cryptolocker was found to be: Shows suspicious behavior.

Malicious Activity Summary

discovery

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-25 07:04

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-25 07:04

Reported

2024-08-25 07:07

Platform

win10v2004-20240802-en

Max time kernel

150s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-08-25_e69aab1ac7b3fbc5f284b646c1ffbab8_cryptolocker.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-08-25_e69aab1ac7b3fbc5f284b646c1ffbab8_cryptolocker.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\lossy.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2024-08-25_e69aab1ac7b3fbc5f284b646c1ffbab8_cryptolocker.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\lossy.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-08-25_e69aab1ac7b3fbc5f284b646c1ffbab8_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-08-25_e69aab1ac7b3fbc5f284b646c1ffbab8_cryptolocker.exe"

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

"C:\Users\Admin\AppData\Local\Temp\lossy.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 2ndry.com udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 192.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp

Files

memory/4180-0-0x0000000008000000-0x000000000800A000-memory.dmp

memory/4180-1-0x0000000002180000-0x0000000002186000-memory.dmp

memory/4180-2-0x0000000002180000-0x0000000002186000-memory.dmp

memory/4180-3-0x00000000021A0000-0x00000000021A6000-memory.dmp

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

MD5 c79c804c9180629bf5cef032dda5b526
SHA1 c717c7bcd2c62e78e7f8cb098754e2bfafc54731
SHA256 e25a28cef60f5184b3ba4c64cf159bef876f4f7313b8a1c9cc2bfbe942928d31
SHA512 442bf2266773a6cec8d4ea460c276c115e98dc761aa6283d87cccd0858cbe3e2189ef3ca6d925ab9186356b625d8d84aaa52538e9de5d09678f155212972c211

memory/4180-17-0x0000000008000000-0x000000000800A000-memory.dmp

memory/4532-25-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

memory/4532-19-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

memory/4532-26-0x0000000008000000-0x000000000800A000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-25 07:04

Reported

2024-08-25 07:06

Platform

win7-20240705-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-08-25_e69aab1ac7b3fbc5f284b646c1ffbab8_cryptolocker.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\lossy.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-08-25_e69aab1ac7b3fbc5f284b646c1ffbab8_cryptolocker.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\lossy.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2024-08-25_e69aab1ac7b3fbc5f284b646c1ffbab8_cryptolocker.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-08-25_e69aab1ac7b3fbc5f284b646c1ffbab8_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-08-25_e69aab1ac7b3fbc5f284b646c1ffbab8_cryptolocker.exe"

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

"C:\Users\Admin\AppData\Local\Temp\lossy.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 2ndry.com udp

Files

memory/2972-0-0x0000000008000000-0x000000000800A000-memory.dmp

memory/2972-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

memory/2972-8-0x00000000002D0000-0x00000000002D6000-memory.dmp

memory/2972-2-0x00000000004B0000-0x00000000004B6000-memory.dmp

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

MD5 c79c804c9180629bf5cef032dda5b526
SHA1 c717c7bcd2c62e78e7f8cb098754e2bfafc54731
SHA256 e25a28cef60f5184b3ba4c64cf159bef876f4f7313b8a1c9cc2bfbe942928d31
SHA512 442bf2266773a6cec8d4ea460c276c115e98dc761aa6283d87cccd0858cbe3e2189ef3ca6d925ab9186356b625d8d84aaa52538e9de5d09678f155212972c211

memory/2972-15-0x0000000008000000-0x000000000800A000-memory.dmp

memory/2068-24-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/2068-17-0x0000000000460000-0x0000000000466000-memory.dmp

memory/2068-25-0x0000000008000000-0x000000000800A000-memory.dmp