Malware Analysis Report

2025-01-18 12:51

Sample ID 240613-eed69axarj
Target 2024-06-13_d249eefcfc12cd75d04704a5b7549d15_cryptolocker
SHA256 0691ae9be7b5052c7e8b48662f99712b5ec5b9603e072ad03de98b0a87251b8a
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

0691ae9be7b5052c7e8b48662f99712b5ec5b9603e072ad03de98b0a87251b8a

Threat Level: Known bad

The file 2024-06-13_d249eefcfc12cd75d04704a5b7549d15_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

UPX dump on OEP (original entry point)

Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

Detection of CryptoLocker Variants

Executes dropped EXE

Loads dropped DLL

UPX packed file

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-13 03:50

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

2024-06-13 03:50

Reported

2024-06-13 03:53

Platform

win7-20240221-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_d249eefcfc12cd75d04704a5b7549d15_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

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
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_d249eefcfc12cd75d04704a5b7549d15_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

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_d249eefcfc12cd75d04704a5b7549d15_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_d249eefcfc12cd75d04704a5b7549d15_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/1040-0-0x0000000008000000-0x000000000800E000-memory.dmp

memory/1040-1-0x00000000002A0000-0x00000000002A6000-memory.dmp

memory/1040-2-0x0000000000410000-0x0000000000416000-memory.dmp

memory/1040-9-0x00000000002A0000-0x00000000002A6000-memory.dmp

memory/1040-16-0x0000000008000000-0x000000000800E000-memory.dmp

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

MD5 850e81000e0498744e75d9f0ac127368
SHA1 3cf03ab1b3fc01c80528617c5cc5acfb8527ea64
SHA256 20a0aef20e61f50e9b197f149f211604debab137afcbbf66e12c5da2aeb8ae0d
SHA512 cf175366770562e3effd29e6d8a3d3799971ebddb66c070bde6ed885a5e788e86f2160471162bc6fd50b1e8f80aaa8a3303e21e81ad551f3d99e67d95c7b3ff0

memory/1040-14-0x00000000031F0000-0x00000000031FE000-memory.dmp

memory/2872-18-0x0000000008000000-0x000000000800E000-memory.dmp

memory/2872-20-0x0000000000330000-0x0000000000336000-memory.dmp

memory/2872-27-0x0000000000310000-0x0000000000316000-memory.dmp

memory/2872-28-0x0000000008000000-0x000000000800E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 03:50

Reported

2024-06-13 03:53

Platform

win10v2004-20240611-en

Max time kernel

150s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_d249eefcfc12cd75d04704a5b7549d15_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-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-13_d249eefcfc12cd75d04704a5b7549d15_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\2024-06-13_d249eefcfc12cd75d04704a5b7549d15_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_d249eefcfc12cd75d04704a5b7549d15_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 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 194.61.62.23.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 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.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 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 8.8.8.8:53 172.210.232.199.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 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 21.236.111.52.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 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/3692-0-0x0000000008000000-0x000000000800E000-memory.dmp

memory/3692-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

memory/3692-2-0x0000000003150000-0x0000000003156000-memory.dmp

memory/3692-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

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

MD5 850e81000e0498744e75d9f0ac127368
SHA1 3cf03ab1b3fc01c80528617c5cc5acfb8527ea64
SHA256 20a0aef20e61f50e9b197f149f211604debab137afcbbf66e12c5da2aeb8ae0d
SHA512 cf175366770562e3effd29e6d8a3d3799971ebddb66c070bde6ed885a5e788e86f2160471162bc6fd50b1e8f80aaa8a3303e21e81ad551f3d99e67d95c7b3ff0

memory/1572-19-0x0000000008000000-0x000000000800E000-memory.dmp

memory/3692-18-0x0000000008000000-0x000000000800E000-memory.dmp

memory/1572-21-0x0000000003010000-0x0000000003016000-memory.dmp

memory/1572-27-0x0000000002D60000-0x0000000002D66000-memory.dmp

memory/1572-28-0x0000000008000000-0x000000000800E000-memory.dmp