Malware Analysis Report

2025-04-13 22:08

Sample ID 240825-lvn5qazdlj
Target 2024-08-25_554730e8b97fdee57ebc24edf8c63473_cryptolocker
SHA256 e5857e7c38b52e5c549067e332f3749f6a998148e3f602f43603f17c26d184a7
Tags
upx discovery
score
7/10

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
7/10

SHA256

e5857e7c38b52e5c549067e332f3749f6a998148e3f602f43603f17c26d184a7

Threat Level: Shows suspicious behavior

The file 2024-08-25_554730e8b97fdee57ebc24edf8c63473_cryptolocker was found to be: Shows suspicious behavior.

Malicious Activity Summary

upx discovery

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

UPX packed file

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-25 09:51

Signatures

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

2024-08-25 09:51

Reported

2024-08-25 09:53

Platform

win7-20240705-en

Max time kernel

141s

Max time network

139s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-08-25_554730e8b97fdee57ebc24edf8c63473_cryptolocker.exe"

Signatures

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\2024-08-25_554730e8b97fdee57ebc24edf8c63473_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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2024-08-25_554730e8b97fdee57ebc24edf8c63473_cryptolocker.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\asih.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-08-25_554730e8b97fdee57ebc24edf8c63473_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-08-25_554730e8b97fdee57ebc24edf8c63473_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 3.130.253.23:443 emrlogistics.com tcp
US 3.130.204.160:443 emrlogistics.com tcp
US 3.130.253.23:443 emrlogistics.com tcp
US 3.130.204.160:443 emrlogistics.com tcp
US 3.130.253.23:443 emrlogistics.com tcp
US 3.130.204.160:443 emrlogistics.com tcp
US 3.130.253.23:443 emrlogistics.com tcp

Files

memory/3024-9-0x0000000000330000-0x0000000000336000-memory.dmp

memory/3024-2-0x0000000000470000-0x0000000000476000-memory.dmp

memory/3024-1-0x0000000000330000-0x0000000000336000-memory.dmp

memory/3024-0-0x0000000000500000-0x0000000000510000-memory.dmp

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

MD5 5d97e3f287c7a88668d70364d76e77b8
SHA1 f64d75a298c81f60cb475e94f504134ef41c8089
SHA256 ba84235b5b45cce5cf1452fde1719180002c9a77ebeb2b644f0334d4f855e3e6
SHA512 a9640c45075d98e70ac56a0eb65f893d2184b4583bf8c6e1889c7b793145cab6e826515482030e2229aa6f09c6c455a1867903a22be5d2d8ce15589274a2e84e

memory/3024-15-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2544-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2544-26-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2544-19-0x0000000000280000-0x0000000000286000-memory.dmp

memory/2544-27-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-25 09:51

Reported

2024-08-25 09:54

Platform

win10v2004-20240802-en

Max time kernel

148s

Max time network

160s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-08-25_554730e8b97fdee57ebc24edf8c63473_cryptolocker.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-08-25_554730e8b97fdee57ebc24edf8c63473_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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2024-08-25_554730e8b97fdee57ebc24edf8c63473_cryptolocker.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\asih.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-08-25_554730e8b97fdee57ebc24edf8c63473_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-08-25_554730e8b97fdee57ebc24edf8c63473_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 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 emrlogistics.com udp
US 54.161.222.85:443 emrlogistics.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 34.205.242.146:443 emrlogistics.com tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 54.161.222.85:443 emrlogistics.com tcp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 34.205.242.146:443 emrlogistics.com tcp
US 54.161.222.85:443 emrlogistics.com tcp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 34.205.242.146:443 emrlogistics.com tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 54.161.222.85:443 emrlogistics.com tcp
US 34.205.242.146:443 emrlogistics.com tcp

Files

memory/3704-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/3704-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

memory/3704-2-0x00000000007B0000-0x00000000007B6000-memory.dmp

memory/3704-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

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

MD5 5d97e3f287c7a88668d70364d76e77b8
SHA1 f64d75a298c81f60cb475e94f504134ef41c8089
SHA256 ba84235b5b45cce5cf1452fde1719180002c9a77ebeb2b644f0334d4f855e3e6
SHA512 a9640c45075d98e70ac56a0eb65f893d2184b4583bf8c6e1889c7b793145cab6e826515482030e2229aa6f09c6c455a1867903a22be5d2d8ce15589274a2e84e

memory/3704-18-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4268-20-0x0000000002110000-0x0000000002116000-memory.dmp

memory/4268-26-0x00000000006C0000-0x00000000006C6000-memory.dmp

memory/4268-27-0x0000000000500000-0x0000000000510000-memory.dmp