Malware Analysis Report

2025-08-05 16:33

Sample ID 240611-czk47a1grj
Target 2024-06-11_76a21aa24a697aab57e05a71ac670bc7_cryptolocker
SHA256 4f57ceb7aaedb596526c77e313c1156ba26e53135259d741d19df8c84822d656
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

4f57ceb7aaedb596526c77e313c1156ba26e53135259d741d19df8c84822d656

Threat Level: Known bad

The file 2024-06-11_76a21aa24a697aab57e05a71ac670bc7_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

Loads dropped DLL

Checks computer location settings

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-11 02:30

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

2024-06-11 02:30

Reported

2024-06-11 02:33

Platform

win7-20240221-en

Max time kernel

150s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_76a21aa24a697aab57e05a71ac670bc7_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\misid.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-11_76a21aa24a697aab57e05a71ac670bc7_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-11_76a21aa24a697aab57e05a71ac670bc7_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_76a21aa24a697aab57e05a71ac670bc7_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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IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 tcp

Files

memory/2096-0-0x0000000000500000-0x000000000050E000-memory.dmp

memory/2096-1-0x0000000000450000-0x0000000000456000-memory.dmp

memory/2096-2-0x0000000000490000-0x0000000000496000-memory.dmp

memory/2096-9-0x0000000000450000-0x0000000000456000-memory.dmp

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

MD5 b47915199431792d4ca5ee5290d37a01
SHA1 ffd297a34c57f4ef3a5aba343c10b9a366102af7
SHA256 0f9a7383b8d217f49bc4d60cfde7cdccd17a995bfb8af1d6f6b38138f3306c49
SHA512 5e03155b0a4e1a1062448b8fa24cc8d129204eb8ff7a4e180dce71e8813ab787b96c9c011caf9dde79b60835bafb93e6c1419ed3b327e2a4e15b134a2d243cfe

memory/2096-13-0x0000000002840000-0x000000000284E000-memory.dmp

memory/2096-16-0x0000000000500000-0x000000000050E000-memory.dmp

memory/2704-26-0x0000000000500000-0x000000000050E000-memory.dmp

memory/2704-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/2704-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-11 02:30

Reported

2024-06-11 02:33

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_76a21aa24a697aab57e05a71ac670bc7_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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-11_76a21aa24a697aab57e05a71ac670bc7_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\2024-06-11_76a21aa24a697aab57e05a71ac670bc7_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_76a21aa24a697aab57e05a71ac670bc7_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/3612-0-0x0000000000500000-0x000000000050E000-memory.dmp

memory/3612-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

memory/3612-2-0x00000000007E0000-0x00000000007E6000-memory.dmp

memory/3612-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

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

MD5 b47915199431792d4ca5ee5290d37a01
SHA1 ffd297a34c57f4ef3a5aba343c10b9a366102af7
SHA256 0f9a7383b8d217f49bc4d60cfde7cdccd17a995bfb8af1d6f6b38138f3306c49
SHA512 5e03155b0a4e1a1062448b8fa24cc8d129204eb8ff7a4e180dce71e8813ab787b96c9c011caf9dde79b60835bafb93e6c1419ed3b327e2a4e15b134a2d243cfe

memory/1484-17-0x0000000000500000-0x000000000050E000-memory.dmp

memory/1484-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/3612-25-0x0000000000500000-0x000000000050E000-memory.dmp

memory/1484-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/1484-27-0x0000000000500000-0x000000000050E000-memory.dmp