Malware Analysis Report

2025-04-14 04:37

Sample ID 240612-vq77gawgjk
Target 2024-06-12_9439a0c4a7880e6d9843517b732e9694_cryptolocker
SHA256 a3954fdbaffd74c474a3af245900c83b017bcd4699314c8f21d7197479f34a91
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

a3954fdbaffd74c474a3af245900c83b017bcd4699314c8f21d7197479f34a91

Threat Level: Known bad

The file 2024-06-12_9439a0c4a7880e6d9843517b732e9694_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-12 17:12

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

2024-06-12 17:12

Reported

2024-06-12 17:15

Platform

win7-20240221-en

Max time kernel

143s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_9439a0c4a7880e6d9843517b732e9694_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

Executes dropped EXE

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-12_9439a0c4a7880e6d9843517b732e9694_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-12_9439a0c4a7880e6d9843517b732e9694_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_9439a0c4a7880e6d9843517b732e9694_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 bestccc.com udp
IN 103.91.187.97:443 bestccc.com tcp
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Files

memory/2168-0-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2168-8-0x0000000000230000-0x0000000000236000-memory.dmp

memory/2168-9-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2168-1-0x0000000000310000-0x0000000000316000-memory.dmp

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

MD5 3f02029863948d49c33ff9e9e324488f
SHA1 85fc2c2871b4a53474410af836d88e299d083923
SHA256 13bfe39f56efc483b7efc0b7aa997640e6ac90fe0d94e31aafa8c88c1d33752e
SHA512 9128bf1a0dcae978b954010c883056edfb4f3556f998f36cf418707872188144ffdad12c1a101b1cdf0c05f5978f317664f097b369084d09748cca0bc53db9c5

memory/2596-16-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/2596-23-0x0000000000230000-0x0000000000236000-memory.dmp

memory/2596-24-0x0000000000230000-0x0000000000236000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-12 17:12

Reported

2024-06-12 17:15

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_9439a0c4a7880e6d9843517b732e9694_cryptolocker.exe"

Signatures

Detection of CryptoLocker Variants

Description Indicator Process Target
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\2024-06-12_9439a0c4a7880e6d9843517b732e9694_cryptolocker.exe N/A

Executes dropped EXE

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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-12_9439a0c4a7880e6d9843517b732e9694_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_9439a0c4a7880e6d9843517b732e9694_cryptolocker.exe"

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

"C:\Users\Admin\AppData\Local\Temp\misid.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 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp

Files

memory/2248-0-0x0000000000410000-0x0000000000420000-memory.dmp

memory/2248-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

memory/2248-2-0x0000000000510000-0x0000000000516000-memory.dmp

memory/2248-9-0x00000000004E0000-0x00000000004E6000-memory.dmp

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

MD5 3f02029863948d49c33ff9e9e324488f
SHA1 85fc2c2871b4a53474410af836d88e299d083923
SHA256 13bfe39f56efc483b7efc0b7aa997640e6ac90fe0d94e31aafa8c88c1d33752e
SHA512 9128bf1a0dcae978b954010c883056edfb4f3556f998f36cf418707872188144ffdad12c1a101b1cdf0c05f5978f317664f097b369084d09748cca0bc53db9c5

memory/3972-17-0x00000000004F0000-0x00000000004F3000-memory.dmp

memory/3972-25-0x0000000002060000-0x0000000002066000-memory.dmp

memory/3972-19-0x0000000002080000-0x0000000002086000-memory.dmp

memory/3972-26-0x00000000004F0000-0x00000000004F3000-memory.dmp