Malware Analysis Report

2025-01-18 14:34

Sample ID 240613-eb56kaxajl
Target 2024-06-13_a55c5c5eb2e7d97c0ed5f19e4b286fcd_cryptolocker
SHA256 e7b0342154b711162d31e4382f3055cda32cea2bc14479746c96869140a74d92
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

e7b0342154b711162d31e4382f3055cda32cea2bc14479746c96869140a74d92

Threat Level: Known bad

The file 2024-06-13_a55c5c5eb2e7d97c0ed5f19e4b286fcd_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

2024-06-13 03:46

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

2024-06-13 03:46

Reported

2024-06-13 03:49

Platform

win7-20240221-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_a55c5c5eb2e7d97c0ed5f19e4b286fcd_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

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\2024-06-13_a55c5c5eb2e7d97c0ed5f19e4b286fcd_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_a55c5c5eb2e7d97c0ed5f19e4b286fcd_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_a55c5c5eb2e7d97c0ed5f19e4b286fcd_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/1996-0-0x0000000008000000-0x000000000800D000-memory.dmp

memory/1996-1-0x0000000000390000-0x0000000000396000-memory.dmp

memory/1996-2-0x00000000003A0000-0x00000000003A6000-memory.dmp

memory/1996-9-0x0000000000390000-0x0000000000396000-memory.dmp

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

MD5 89578034f9f9826106f764b2b27b0f37
SHA1 8513a04985481418e569e7823cb4541e6c364412
SHA256 fa6450e0edd96964e9b248521a3f194964e9e595c52c065bfc100ac189c83aaa
SHA512 e46301bd04e9cd7f282195fd992635cb0d1f177d936c9313200a8052ce31b29e6b30cbba97de924ea98b0daad7d3524adab5ca4c717dbbd4eecb7f469ef98c09

memory/1836-16-0x0000000008000000-0x000000000800D000-memory.dmp

memory/1996-14-0x0000000008000000-0x000000000800D000-memory.dmp

memory/1836-18-0x0000000000390000-0x0000000000396000-memory.dmp

memory/1836-25-0x0000000000380000-0x0000000000386000-memory.dmp

memory/1836-26-0x0000000008000000-0x000000000800D000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 03:46

Reported

2024-06-13 03:49

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

157s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_a55c5c5eb2e7d97c0ed5f19e4b286fcd_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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-13_a55c5c5eb2e7d97c0ed5f19e4b286fcd_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\2024-06-13_a55c5c5eb2e7d97c0ed5f19e4b286fcd_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_a55c5c5eb2e7d97c0ed5f19e4b286fcd_cryptolocker.exe"

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

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

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3740,i,3724086843943218842,1026644135694712596,262144 --variations-seed-version --mojo-platform-channel-handle=3252 /prefetch:8

Network

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

Files

memory/3068-0-0x0000000008000000-0x000000000800D000-memory.dmp

memory/3068-1-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

memory/3068-2-0x0000000002010000-0x0000000002016000-memory.dmp

memory/3068-9-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

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

MD5 89578034f9f9826106f764b2b27b0f37
SHA1 8513a04985481418e569e7823cb4541e6c364412
SHA256 fa6450e0edd96964e9b248521a3f194964e9e595c52c065bfc100ac189c83aaa
SHA512 e46301bd04e9cd7f282195fd992635cb0d1f177d936c9313200a8052ce31b29e6b30cbba97de924ea98b0daad7d3524adab5ca4c717dbbd4eecb7f469ef98c09

memory/3068-17-0x0000000008000000-0x000000000800D000-memory.dmp

memory/4604-19-0x0000000003150000-0x0000000003156000-memory.dmp

memory/4604-25-0x0000000002250000-0x0000000002256000-memory.dmp

memory/4604-26-0x0000000008000000-0x000000000800D000-memory.dmp