Malware Analysis Report

2025-06-16 07:16

Sample ID 240602-a8jllsda51
Target 2024-06-02_d637fda51f8daec053be94aa950b4164_cryptolocker
SHA256 7ae98fdc18c70f3068057a52b7e72e74617c263f2f1fc57a889cc149540f9e9f
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

7ae98fdc18c70f3068057a52b7e72e74617c263f2f1fc57a889cc149540f9e9f

Threat Level: Known bad

The file 2024-06-02_d637fda51f8daec053be94aa950b4164_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-02 00:52

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

2024-06-02 00:52

Reported

2024-06-02 00:55

Platform

win7-20240221-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_d637fda51f8daec053be94aa950b4164_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

Executes dropped EXE

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-02_d637fda51f8daec053be94aa950b4164_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-02_d637fda51f8daec053be94aa950b4164_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_d637fda51f8daec053be94aa950b4164_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 mytarta.com udp

Files

memory/912-0-0x0000000008000000-0x000000000800D000-memory.dmp

memory/912-2-0x0000000000590000-0x0000000000596000-memory.dmp

memory/912-1-0x0000000000370000-0x0000000000376000-memory.dmp

memory/912-9-0x0000000000370000-0x0000000000376000-memory.dmp

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

MD5 c42366fe7514fff2ea84ae61eaba2d1d
SHA1 fbd78aeb838da4450602ff896748f26952e3cd52
SHA256 2115928089ee463e18a025016ec21a151526c8ee0d11e193a8f0b7de5a832e8b
SHA512 007859541ac72db95981767c15bcfb23cdebd60d498b5a50be36ac0e305db3396d7b951ad51e85e6bd7b45f11b2726949c0089dfbfc045d319cfc1b5012b9055

memory/912-13-0x0000000001F90000-0x0000000001F9D000-memory.dmp

memory/912-16-0x0000000008000000-0x000000000800D000-memory.dmp

memory/3040-17-0x0000000008000000-0x000000000800D000-memory.dmp

memory/3040-26-0x0000000000380000-0x0000000000386000-memory.dmp

memory/3040-19-0x0000000000390000-0x0000000000396000-memory.dmp

memory/3040-27-0x0000000008000000-0x000000000800D000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-02 00:52

Reported

2024-06-02 00:55

Platform

win10v2004-20240426-en

Max time kernel

150s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_d637fda51f8daec053be94aa950b4164_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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-02_d637fda51f8daec053be94aa950b4164_cryptolocker.exe N/A

Executes dropped EXE

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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-02_d637fda51f8daec053be94aa950b4164_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_d637fda51f8daec053be94aa950b4164_cryptolocker.exe"

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

"C:\Users\Admin\AppData\Local\Temp\hasfj.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 mytarta.com udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 udp

Files

memory/3368-0-0x0000000008000000-0x000000000800D000-memory.dmp

memory/3368-1-0x0000000002160000-0x0000000002166000-memory.dmp

memory/3368-2-0x0000000002160000-0x0000000002166000-memory.dmp

memory/3368-3-0x0000000002190000-0x0000000002196000-memory.dmp

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

MD5 c42366fe7514fff2ea84ae61eaba2d1d
SHA1 fbd78aeb838da4450602ff896748f26952e3cd52
SHA256 2115928089ee463e18a025016ec21a151526c8ee0d11e193a8f0b7de5a832e8b
SHA512 007859541ac72db95981767c15bcfb23cdebd60d498b5a50be36ac0e305db3396d7b951ad51e85e6bd7b45f11b2726949c0089dfbfc045d319cfc1b5012b9055

memory/3368-17-0x0000000008000000-0x000000000800D000-memory.dmp

memory/3980-19-0x0000000003150000-0x0000000003156000-memory.dmp

memory/3980-25-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

memory/3980-26-0x0000000008000000-0x000000000800D000-memory.dmp