Malware Analysis Report

2025-08-11 06:11

Sample ID 240610-1gkmps1eph
Target 2024-06-10_a21c08c3ea498909e478defc9461c09d_cryptolocker
SHA256 cf7267048f58fa1be4bdcd8524efb028a1d5bf8cb85a311d553544a212b7de8c
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

cf7267048f58fa1be4bdcd8524efb028a1d5bf8cb85a311d553544a212b7de8c

Threat Level: Known bad

The file 2024-06-10_a21c08c3ea498909e478defc9461c09d_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)

UPX dump on OEP (original entry point)

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

Checks computer location settings

UPX packed file

Loads dropped DLL

Executes dropped EXE

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-10 21:37

Signatures

Detection of CryptoLocker Variants

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

Detection of Cryptolocker Samples

Description Indicator Process Target
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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-10 21:37

Reported

2024-06-10 21:39

Platform

win7-20240419-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_a21c08c3ea498909e478defc9461c09d_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\2024-06-10_a21c08c3ea498909e478defc9461c09d_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\2024-06-10_a21c08c3ea498909e478defc9461c09d_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_a21c08c3ea498909e478defc9461c09d_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 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp

Files

memory/2844-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2844-1-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2844-9-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2844-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

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

MD5 655e29d5362a718e0eaa02a2a6fec858
SHA1 f0b089eb05447160f662afe3e50d1a0f0869f3f4
SHA256 dda0ccf9063b5984ca800c0e6b412e40710dbe3a57c0a2a2e2a7a0cb9d9880e5
SHA512 61515707ac70050b803d79585c69e4b085237f3bb7dff1725d80659d349ca43b9c49661b77700d490f02d498a15c20ba472f985b6249465ad791b4abd1fc73fa

memory/2668-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2844-15-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2668-18-0x0000000000290000-0x0000000000296000-memory.dmp

memory/2668-25-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-10 21:37

Reported

2024-06-10 21:39

Platform

win10v2004-20240426-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_a21c08c3ea498909e478defc9461c09d_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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-10_a21c08c3ea498909e478defc9461c09d_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\2024-06-10_a21c08c3ea498909e478defc9461c09d_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_a21c08c3ea498909e478defc9461c09d_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 emrlogistics.com udp
US 52.86.6.113:443 emrlogistics.com tcp
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 97.17.167.52.in-addr.arpa udp
US 3.94.41.167:443 emrlogistics.com tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 52.86.6.113:443 emrlogistics.com tcp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 3.94.41.167:443 emrlogistics.com tcp
US 52.86.6.113:443 emrlogistics.com tcp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 3.94.41.167:443 emrlogistics.com tcp
US 52.86.6.113:443 emrlogistics.com tcp
US 3.94.41.167:443 emrlogistics.com tcp

Files

memory/2844-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2844-1-0x0000000000630000-0x0000000000636000-memory.dmp

memory/2844-2-0x0000000000760000-0x0000000000766000-memory.dmp

memory/2844-9-0x0000000000630000-0x0000000000636000-memory.dmp

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

MD5 655e29d5362a718e0eaa02a2a6fec858
SHA1 f0b089eb05447160f662afe3e50d1a0f0869f3f4
SHA256 dda0ccf9063b5984ca800c0e6b412e40710dbe3a57c0a2a2e2a7a0cb9d9880e5
SHA512 61515707ac70050b803d79585c69e4b085237f3bb7dff1725d80659d349ca43b9c49661b77700d490f02d498a15c20ba472f985b6249465ad791b4abd1fc73fa

memory/2844-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2344-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

memory/2344-25-0x00000000006B0000-0x00000000006B6000-memory.dmp

memory/2344-26-0x0000000000500000-0x0000000000510000-memory.dmp