Malware Analysis Report

2025-04-14 02:51

Sample ID 240603-jl7jlagd5x
Target 2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_cryptolocker
SHA256 a26cf784cff73f77ec876a046f29721f4e15c24d818d98e1ffbd6fb749b05af3
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

a26cf784cff73f77ec876a046f29721f4e15c24d818d98e1ffbd6fb749b05af3

Threat Level: Known bad

The file 2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-03 07:46

Signatures

Detection of CryptoLocker Variants

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 07:46

Reported

2024-06-03 07:49

Platform

win7-20240221-en

Max time kernel

149s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_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
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\lossy.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_cryptolocker.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_cryptolocker.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\lossy.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_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/2456-0-0x0000000008000000-0x0000000008884000-memory.dmp

memory/2456-1-0x0000000000230000-0x0000000000231000-memory.dmp

memory/2456-3-0x0000000000230000-0x0000000000231000-memory.dmp

memory/2456-7-0x000000000800A000-0x0000000008303000-memory.dmp

memory/2456-5-0x0000000000230000-0x0000000000231000-memory.dmp

memory/2456-6-0x0000000008000000-0x0000000008884000-memory.dmp

memory/2456-9-0x0000000000300000-0x0000000000306000-memory.dmp

memory/2456-8-0x00000000002D0000-0x00000000002D6000-memory.dmp

memory/2456-16-0x0000000008000000-0x0000000008884000-memory.dmp

memory/2456-17-0x0000000008000000-0x0000000008884000-memory.dmp

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

MD5 d3d6ab48cdf45035cbad9e7945d9ad40
SHA1 a1e61f8d289a5d7ddc149b06d6bba398142558b0
SHA256 219cc6ddef34a3803d8e54eeb1cd20af561cf5b48e6c237b79145a6287b95fdb
SHA512 1bf38d56755cfc1dabd1a34c68011b9b3b3fd6b65ed61f5da59f80bb4a3f3ac9c8c2f4c7ac32e138e6ff1f0a5941f6c08284d81b34b605f5452cd8e7cc89a1f3

memory/2456-23-0x0000000002B60000-0x00000000033E4000-memory.dmp

memory/2456-25-0x0000000008000000-0x0000000008884000-memory.dmp

memory/2588-32-0x0000000008000000-0x0000000008884000-memory.dmp

memory/2588-34-0x0000000000280000-0x0000000000286000-memory.dmp

memory/2588-40-0x0000000008000000-0x0000000008884000-memory.dmp

memory/2456-26-0x000000000800A000-0x0000000008303000-memory.dmp

memory/2588-41-0x0000000008000000-0x0000000008884000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-03 07:46

Reported

2024-06-03 07:49

Platform

win10v2004-20240426-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_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
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\2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_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

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 227.143.123.92.in-addr.arpa udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 209.205.72.20.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 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.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 8.8.8.8:53 172.210.232.199.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 14.227.111.52.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 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 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

Files

memory/2308-0-0x0000000008000000-0x0000000008884000-memory.dmp

memory/2308-1-0x0000000000490000-0x0000000000491000-memory.dmp

memory/2308-3-0x000000000800A000-0x0000000008303000-memory.dmp

memory/2308-2-0x0000000008000000-0x0000000008884000-memory.dmp

memory/2308-4-0x0000000008000000-0x0000000008884000-memory.dmp

memory/2308-6-0x0000000000500000-0x0000000000506000-memory.dmp

memory/2308-5-0x00000000004E0000-0x00000000004E6000-memory.dmp

memory/2308-13-0x0000000008000000-0x0000000008884000-memory.dmp

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

MD5 d3d6ab48cdf45035cbad9e7945d9ad40
SHA1 a1e61f8d289a5d7ddc149b06d6bba398142558b0
SHA256 219cc6ddef34a3803d8e54eeb1cd20af561cf5b48e6c237b79145a6287b95fdb
SHA512 1bf38d56755cfc1dabd1a34c68011b9b3b3fd6b65ed61f5da59f80bb4a3f3ac9c8c2f4c7ac32e138e6ff1f0a5941f6c08284d81b34b605f5452cd8e7cc89a1f3

memory/2308-21-0x0000000008000000-0x0000000008884000-memory.dmp

memory/2308-22-0x000000000800A000-0x0000000008303000-memory.dmp

memory/1476-23-0x0000000000520000-0x0000000000521000-memory.dmp

memory/1476-25-0x0000000008000000-0x0000000008884000-memory.dmp

memory/1476-24-0x0000000008000000-0x0000000008884000-memory.dmp

memory/1476-27-0x0000000001F70000-0x0000000001F76000-memory.dmp

memory/1476-33-0x0000000008000000-0x0000000008884000-memory.dmp