Malware Analysis Report

2025-04-14 00:32

Sample ID 240601-w3tehsbg54
Target 2024-06-01_5dc8798266fdb13c830ecba13cf829c9_cryptolocker
SHA256 e2b0ecd743b55dd74df2f17c35581ea9dbc0d8cba821027314875947831a2053
Tags
upx
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

e2b0ecd743b55dd74df2f17c35581ea9dbc0d8cba821027314875947831a2053

Threat Level: Known bad

The file 2024-06-01_5dc8798266fdb13c830ecba13cf829c9_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

Loads dropped DLL

UPX packed file

Executes dropped EXE

Checks computer location settings

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-01 18:27

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

UPX dump on OEP (original entry point)

Description Indicator Process Target
N/A N/A N/A N/A

UPX packed file

upx
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
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-01 18:27

Reported

2024-06-01 18:29

Platform

win7-20240221-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-01_5dc8798266fdb13c830ecba13cf829c9_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

UPX dump on OEP (original entry point)

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\2024-06-01_5dc8798266fdb13c830ecba13cf829c9_cryptolocker.exe N/A

UPX packed file

upx
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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-01_5dc8798266fdb13c830ecba13cf829c9_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-01_5dc8798266fdb13c830ecba13cf829c9_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/1712-0-0x0000000008000000-0x000000000800E000-memory.dmp

memory/1712-1-0x00000000004B0000-0x00000000004B6000-memory.dmp

memory/1712-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

memory/1712-9-0x00000000004B0000-0x00000000004B6000-memory.dmp

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

MD5 0199422d74cc881a038cea6a2dd1d03b
SHA1 a712b1513aa89c65c18e6884d5f3e8c8a4f04966
SHA256 5154a5eef66bbf0852ac7299bdfd47170f901ecc3a5d2bbc8bfe38d7e15b770b
SHA512 f5f5137f3f851a50ba7a521d8868e418ba11963a894e2d59f66b052153f24479448f7f1a9e29b237960c67eac5d9fbf2b0afb7fc931cb55d8c9a789076520f17

memory/1712-16-0x0000000008000000-0x000000000800E000-memory.dmp

memory/2504-17-0x0000000008000000-0x000000000800E000-memory.dmp

memory/2504-26-0x0000000000360000-0x0000000000366000-memory.dmp

memory/2504-19-0x0000000000580000-0x0000000000586000-memory.dmp

memory/2504-27-0x0000000008000000-0x000000000800E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-01 18:27

Reported

2024-06-01 18:29

Platform

win10v2004-20240426-en

Max time kernel

150s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-01_5dc8798266fdb13c830ecba13cf829c9_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

UPX dump on OEP (original entry point)

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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-01_5dc8798266fdb13c830ecba13cf829c9_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

UPX packed file

upx
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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-01_5dc8798266fdb13c830ecba13cf829c9_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-01_5dc8798266fdb13c830ecba13cf829c9_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
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 145.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 154.239.44.20.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 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.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 83.210.23.2.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

Files

memory/1432-0-0x0000000008000000-0x000000000800E000-memory.dmp

memory/1432-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

memory/1432-2-0x0000000003150000-0x0000000003156000-memory.dmp

memory/1432-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

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

MD5 0199422d74cc881a038cea6a2dd1d03b
SHA1 a712b1513aa89c65c18e6884d5f3e8c8a4f04966
SHA256 5154a5eef66bbf0852ac7299bdfd47170f901ecc3a5d2bbc8bfe38d7e15b770b
SHA512 f5f5137f3f851a50ba7a521d8868e418ba11963a894e2d59f66b052153f24479448f7f1a9e29b237960c67eac5d9fbf2b0afb7fc931cb55d8c9a789076520f17

memory/1432-18-0x0000000008000000-0x000000000800E000-memory.dmp

memory/3048-17-0x0000000008000000-0x000000000800E000-memory.dmp

memory/3048-26-0x0000000008000000-0x000000000800E000-memory.dmp