Malware Analysis Report

2025-01-18 14:04

Sample ID 240613-dcy8zasalh
Target 2024-06-13_6a809ffecf50e550d89f100a6aefbe42_cryptolocker
SHA256 72d693fdc25d25429a7084db88db2603b304fbf95cc126c905fd3236b8e71713
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

72d693fdc25d25429a7084db88db2603b304fbf95cc126c905fd3236b8e71713

Threat Level: Known bad

The file 2024-06-13_6a809ffecf50e550d89f100a6aefbe42_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

UPX packed file

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

2024-06-13 02:52

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

Detection of Cryptolocker Samples

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

2024-06-13 02:52

Reported

2024-06-13 02:55

Platform

win7-20240221-en

Max time kernel

148s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_6a809ffecf50e550d89f100a6aefbe42_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

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\asih.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-13_6a809ffecf50e550d89f100a6aefbe42_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\2024-06-13_6a809ffecf50e550d89f100a6aefbe42_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_6a809ffecf50e550d89f100a6aefbe42_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 emrlogistics.com udp
US 3.18.7.81:443 emrlogistics.com tcp
US 3.19.116.195:443 emrlogistics.com tcp
US 3.18.7.81:443 emrlogistics.com tcp
US 3.19.116.195:443 emrlogistics.com tcp
US 3.18.7.81:443 emrlogistics.com tcp
US 3.19.116.195:443 emrlogistics.com tcp
US 3.18.7.81:443 emrlogistics.com tcp
US 3.19.116.195:443 emrlogistics.com tcp

Files

memory/2336-0-0x0000000000500000-0x000000000050F000-memory.dmp

memory/2336-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/2336-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/2336-2-0x0000000000470000-0x0000000000476000-memory.dmp

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

MD5 01d9df4c038d2466afb8cce788b114ee
SHA1 3f6c96883a43aa575496740f111eb40bc8334c9b
SHA256 8b2f7229887fdb9323b65b9287f76b2c7ebae917f4de5d7fc9cceff864702b8c
SHA512 99e70a788e5f7fc487f62191addf9fcc8ffe406c1edd2f462a592f7d141a3dc76df97d89c520aed54c7558cec2ea51fbb64f6265737a397761289fc2f1e1e7e6

memory/2336-15-0x0000000000500000-0x000000000050F000-memory.dmp

memory/2180-16-0x0000000000500000-0x000000000050F000-memory.dmp

memory/2180-18-0x0000000000300000-0x0000000000306000-memory.dmp

memory/2180-25-0x0000000000500000-0x000000000050F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 02:52

Reported

2024-06-13 02:55

Platform

win10v2004-20240611-en

Max time kernel

148s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_6a809ffecf50e550d89f100a6aefbe42_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

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

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-13_6a809ffecf50e550d89f100a6aefbe42_cryptolocker.exe N/A

Executes dropped EXE

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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_6a809ffecf50e550d89f100a6aefbe42_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_6a809ffecf50e550d89f100a6aefbe42_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 emrlogistics.com udp
US 52.71.57.184:443 emrlogistics.com tcp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 54.209.32.212:443 emrlogistics.com tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 52.71.57.184:443 emrlogistics.com tcp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 54.209.32.212:443 emrlogistics.com tcp
US 52.71.57.184:443 emrlogistics.com tcp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 54.209.32.212:443 emrlogistics.com tcp
US 52.71.57.184:443 emrlogistics.com tcp
US 54.209.32.212:443 emrlogistics.com tcp

Files

memory/1544-0-0x0000000000500000-0x000000000050F000-memory.dmp

memory/1544-1-0x0000000001F50000-0x0000000001F56000-memory.dmp

memory/1544-8-0x0000000001F50000-0x0000000001F56000-memory.dmp

memory/1544-2-0x0000000001F70000-0x0000000001F76000-memory.dmp

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

MD5 01d9df4c038d2466afb8cce788b114ee
SHA1 3f6c96883a43aa575496740f111eb40bc8334c9b
SHA256 8b2f7229887fdb9323b65b9287f76b2c7ebae917f4de5d7fc9cceff864702b8c
SHA512 99e70a788e5f7fc487f62191addf9fcc8ffe406c1edd2f462a592f7d141a3dc76df97d89c520aed54c7558cec2ea51fbb64f6265737a397761289fc2f1e1e7e6

memory/1544-17-0x0000000000500000-0x000000000050F000-memory.dmp

memory/3348-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/3348-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/3348-26-0x0000000000500000-0x000000000050F000-memory.dmp