Malware Analysis Report

2025-06-16 07:06

Sample ID 240531-tbljgsdg99
Target 2024-05-31_8a9f60e10293364644e5540dd74eb404_cryptolocker
SHA256 2610f1bcc56f972a6bd51658ce834900cb35ec468939b4ebc8c89acafb0ee825
Tags
upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

2610f1bcc56f972a6bd51658ce834900cb35ec468939b4ebc8c89acafb0ee825

Threat Level: Known bad

The file 2024-05-31_8a9f60e10293364644e5540dd74eb404_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 Samples

UPX dump on OEP (original entry point)

Detection of CryptoLocker Variants

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

UPX packed file

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-31 15:53

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: behavioral2

Detonation Overview

Submitted

2024-05-31 15:53

Reported

2024-05-31 15:55

Platform

win10v2004-20240426-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_8a9f60e10293364644e5540dd74eb404_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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-05-31_8a9f60e10293364644e5540dd74eb404_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
N/A N/A N/A N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-31_8a9f60e10293364644e5540dd74eb404_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_8a9f60e10293364644e5540dd74eb404_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.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 97.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 84.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 34.205.242.146:443 emrlogistics.com tcp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 54.161.222.85:443 emrlogistics.com tcp
US 8.8.8.8:53 89.90.14.23.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 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
US 34.205.242.146:443 emrlogistics.com tcp
US 54.161.222.85:443 emrlogistics.com tcp
US 34.205.242.146:443 emrlogistics.com tcp
US 8.8.8.8:53 105.246.116.51.in-addr.arpa udp

Files

memory/3448-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/3448-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

memory/3448-2-0x0000000000510000-0x0000000000516000-memory.dmp

memory/3448-9-0x00000000004E0000-0x00000000004E6000-memory.dmp

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

MD5 41bea78bdaad6da26c632d3303d4b97a
SHA1 74b15ba3388a60e8c44da12c59e8b45e303cf921
SHA256 4124c4a289f21bce7e7d666307aee3846b83dbd3533d35288b1f016010d5f78e
SHA512 d90f34412ff55ad13a8ee2ef4eee35af2c84490b37bc8b38e9232bb58505430daf39d642b87d1283704ed80de614c53477c06575306c1a61cc2266163f978dbe

memory/3448-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/940-18-0x0000000000500000-0x0000000000510000-memory.dmp

memory/940-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/940-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/940-27-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-31 15:53

Reported

2024-05-31 15:55

Platform

win7-20240508-en

Max time kernel

148s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_8a9f60e10293364644e5540dd74eb404_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

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
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\asih.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-05-31_8a9f60e10293364644e5540dd74eb404_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
N/A N/A N/A N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-31_8a9f60e10293364644e5540dd74eb404_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_8a9f60e10293364644e5540dd74eb404_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/1036-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1036-1-0x0000000000240000-0x0000000000246000-memory.dmp

memory/1036-2-0x0000000000240000-0x0000000000246000-memory.dmp

memory/1036-3-0x0000000000480000-0x0000000000486000-memory.dmp

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

MD5 41bea78bdaad6da26c632d3303d4b97a
SHA1 74b15ba3388a60e8c44da12c59e8b45e303cf921
SHA256 4124c4a289f21bce7e7d666307aee3846b83dbd3533d35288b1f016010d5f78e
SHA512 d90f34412ff55ad13a8ee2ef4eee35af2c84490b37bc8b38e9232bb58505430daf39d642b87d1283704ed80de614c53477c06575306c1a61cc2266163f978dbe

memory/1036-13-0x0000000001EA0000-0x0000000001EB0000-memory.dmp

memory/1036-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2312-18-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2312-20-0x00000000004C0000-0x00000000004C6000-memory.dmp

memory/2312-27-0x0000000000380000-0x0000000000386000-memory.dmp

memory/2312-28-0x0000000000500000-0x0000000000510000-memory.dmp