Malware Analysis Report

2025-08-05 16:33

Sample ID 240611-cwlljs1fkr
Target 2024-06-11_3a6e0314923a150a15f40de7679c9931_cryptolocker
SHA256 4ac35deda035f53f01b2251da7694705b5d62791c7666a2c56846f9978f553fd
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

4ac35deda035f53f01b2251da7694705b5d62791c7666a2c56846f9978f553fd

Threat Level: Known bad

The file 2024-06-11_3a6e0314923a150a15f40de7679c9931_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 UnmapMainImage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-11 02:25

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

2024-06-11 02:25

Reported

2024-06-11 02:28

Platform

win7-20240419-en

Max time kernel

144s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_3a6e0314923a150a15f40de7679c9931_cryptolocker.exe"

Signatures

Detection of CryptoLocker Variants

Description Indicator Process Target
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\demka.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-11_3a6e0314923a150a15f40de7679c9931_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-11_3a6e0314923a150a15f40de7679c9931_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_3a6e0314923a150a15f40de7679c9931_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 ttms.org udp
US 8.8.8.8:53 ttms.org udp
US 8.8.8.8:53 ttms.org udp
US 8.8.8.8:53 ttms.org udp
US 8.8.8.8:53 ttms.org udp
US 8.8.8.8:53 ttms.org udp
US 8.8.8.8:53 ttms.org udp
US 8.8.8.8:53 ttms.org udp
US 8.8.8.8:53 ttms.org udp
US 8.8.8.8:53 ttms.org udp
US 8.8.8.8:53 ttms.org udp

Files

memory/1180-0-0x0000000000490000-0x0000000000496000-memory.dmp

memory/1180-1-0x0000000000400000-0x0000000000406000-memory.dmp

memory/1180-8-0x0000000000490000-0x0000000000496000-memory.dmp

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

MD5 00c78cc62f859d5ddfb386c073d59a13
SHA1 13dd83f9a7ef3114dfdb74da8fd7e874be42b8b8
SHA256 e3ca93635f1698c47991bca697d5c73a7b6a11682c3a40e80feaeae8ae64eb5e
SHA512 0a367a7cb03751630ba363df5049e0fc8b746448f456309c7bf6f37cc9dfe38c8bca958e1f412f7afe3c39deeb224091686da4aaabab6f25f7c7cd8bb5b74728

memory/3024-23-0x0000000000290000-0x0000000000296000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-11 02:25

Reported

2024-06-11 02:28

Platform

win10v2004-20240426-en

Max time kernel

150s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_3a6e0314923a150a15f40de7679c9931_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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-11_3a6e0314923a150a15f40de7679c9931_cryptolocker.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\demka.exe N/A

Executes dropped EXE

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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-11_3a6e0314923a150a15f40de7679c9931_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_3a6e0314923a150a15f40de7679c9931_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 ttms.org udp
US 35.215.114.222:443 ttms.org tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 222.114.215.35.in-addr.arpa udp
US 8.8.8.8:53 11.97.55.23.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 6.160.77.104.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/2444-0-0x00000000020E0000-0x00000000020E6000-memory.dmp

memory/2444-8-0x00000000020E0000-0x00000000020E6000-memory.dmp

memory/2444-1-0x0000000000400000-0x0000000000406000-memory.dmp

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

MD5 00c78cc62f859d5ddfb386c073d59a13
SHA1 13dd83f9a7ef3114dfdb74da8fd7e874be42b8b8
SHA256 e3ca93635f1698c47991bca697d5c73a7b6a11682c3a40e80feaeae8ae64eb5e
SHA512 0a367a7cb03751630ba363df5049e0fc8b746448f456309c7bf6f37cc9dfe38c8bca958e1f412f7afe3c39deeb224091686da4aaabab6f25f7c7cd8bb5b74728

memory/2356-25-0x0000000002210000-0x0000000002216000-memory.dmp

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

MD5 ecbf6c31cb31cde6fe5c8c2d20451196
SHA1 1ce8c690f5c0f6ef7e700af7e9434456213bd57a
SHA256 d1318f490f295a997972f0aebe9e630fd6e3c178e3652839edff2caae9d64c04
SHA512 a95ea69db8a90810c8743b077884e920f7b98b6fbce5ca14c57e86181df3f4b62717c6da2c518a24bab475446a7a711389055763cac9acbcc5557d11a5c7a8ea