Malware Analysis Report

2025-08-05 15:55

Sample ID 240602-3rb5esbe2z
Target 2024-06-02_07d9d9c4f1c3c9709cacee23b3ebff5c_cryptolocker
SHA256 e46cdf1a048d94a7086ffc4b7013855fb6f57fe124f66ed952b98a1f5df35a72
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

e46cdf1a048d94a7086ffc4b7013855fb6f57fe124f66ed952b98a1f5df35a72

Threat Level: Known bad

The file 2024-06-02_07d9d9c4f1c3c9709cacee23b3ebff5c_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

Checks computer location settings

UPX packed file

Executes dropped EXE

Loads dropped DLL

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-02 23:44

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

2024-06-02 23:44

Reported

2024-06-02 23:47

Platform

win7-20240508-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_07d9d9c4f1c3c9709cacee23b3ebff5c_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

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\2024-06-02_07d9d9c4f1c3c9709cacee23b3ebff5c_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\2024-06-02_07d9d9c4f1c3c9709cacee23b3ebff5c_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_07d9d9c4f1c3c9709cacee23b3ebff5c_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/2944-0-0x0000000008000000-0x000000000800E000-memory.dmp

memory/2944-1-0x00000000005C0000-0x00000000005C6000-memory.dmp

memory/2944-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

memory/2944-9-0x00000000005C0000-0x00000000005C6000-memory.dmp

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

MD5 17417459107a26876fb61380bf6958b2
SHA1 70e3b51fd6a91918d72eed4a05b6814319ad8c95
SHA256 431685f3e575b234b12f1f9f8a7d6d2a6c2823f8c68880a93308518efc5fd0fc
SHA512 f290ade12a4f332ea28dafe68e57804bf1bb5469a6901657266ff9487a0efc4fda746de74cc973a0df1bd686dde3301777587d8e269c6fdadb53e2cee0c1380a

memory/2944-16-0x0000000008000000-0x000000000800E000-memory.dmp

memory/2704-17-0x0000000008000000-0x000000000800E000-memory.dmp

memory/2704-19-0x00000000002B0000-0x00000000002B6000-memory.dmp

memory/2704-26-0x00000000002A0000-0x00000000002A6000-memory.dmp

memory/2704-27-0x0000000008000000-0x000000000800E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-02 23:44

Reported

2024-06-02 23:46

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_07d9d9c4f1c3c9709cacee23b3ebff5c_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

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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-02_07d9d9c4f1c3c9709cacee23b3ebff5c_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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-02_07d9d9c4f1c3c9709cacee23b3ebff5c_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_07d9d9c4f1c3c9709cacee23b3ebff5c_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 149.220.183.52.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 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.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 8.8.8.8:53 130.211.222.173.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 249.197.17.2.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 43.58.199.20.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 30.243.111.52.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 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
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 udp

Files

memory/4220-0-0x0000000008000000-0x000000000800E000-memory.dmp

memory/4220-1-0x00000000020A0000-0x00000000020A6000-memory.dmp

memory/4220-2-0x0000000003010000-0x0000000003016000-memory.dmp

memory/4220-9-0x00000000020A0000-0x00000000020A6000-memory.dmp

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

MD5 17417459107a26876fb61380bf6958b2
SHA1 70e3b51fd6a91918d72eed4a05b6814319ad8c95
SHA256 431685f3e575b234b12f1f9f8a7d6d2a6c2823f8c68880a93308518efc5fd0fc
SHA512 f290ade12a4f332ea28dafe68e57804bf1bb5469a6901657266ff9487a0efc4fda746de74cc973a0df1bd686dde3301777587d8e269c6fdadb53e2cee0c1380a

memory/4220-18-0x0000000008000000-0x000000000800E000-memory.dmp

memory/4264-20-0x0000000003150000-0x0000000003156000-memory.dmp

memory/4264-26-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

memory/4264-27-0x0000000008000000-0x000000000800E000-memory.dmp