Malware Analysis Report

2025-06-16 07:16

Sample ID 240602-a8eyesdf38
Target 2024-06-02_d5e694be19a9867676f26bf6a91c9385_cryptolocker
SHA256 38b6fd3c07d124506524e2a885baf8cbd8f625e0e37267a7e4fa30b132d38cda
Tags
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

38b6fd3c07d124506524e2a885baf8cbd8f625e0e37267a7e4fa30b132d38cda

Threat Level: Known bad

The file 2024-06-02_d5e694be19a9867676f26bf6a91c9385_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-02 00:52

Signatures

Detection of CryptoLocker Variants

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

2024-06-02 00:52

Reported

2024-06-02 00:55

Platform

win7-20240221-en

Max time kernel

150s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_d5e694be19a9867676f26bf6a91c9385_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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\lossy.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-02_d5e694be19a9867676f26bf6a91c9385_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-02_d5e694be19a9867676f26bf6a91c9385_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_d5e694be19a9867676f26bf6a91c9385_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 2ndry.com udp

Files

memory/2872-0-0x0000000008000000-0x000000000800A000-memory.dmp

memory/2872-1-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2872-2-0x0000000000270000-0x0000000000276000-memory.dmp

memory/2872-9-0x0000000000240000-0x0000000000246000-memory.dmp

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

MD5 b928327676574ade9802e08310744208
SHA1 c51bf7259d5f7a1fe25f22acdd40af8554b668af
SHA256 6ba95cc793c681a4ef51f5e2d2ab101031dd896ef9f3065f8e8c2b203846fb30
SHA512 82b82a6ec4205f72813e24482bb724f8a56bea5e84452eb0b33569203f5c113741f647f86226704dd205dbe7c7a881934cc309f2048094dfe2a581469b142fdc

memory/2872-16-0x0000000008000000-0x000000000800A000-memory.dmp

memory/2872-13-0x00000000025B0000-0x00000000025BA000-memory.dmp

memory/3012-18-0x00000000001D0000-0x00000000001D6000-memory.dmp

memory/3012-19-0x0000000000280000-0x0000000000286000-memory.dmp

memory/3012-26-0x0000000008000000-0x000000000800A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-02 00:52

Reported

2024-06-02 00:55

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

159s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_d5e694be19a9867676f26bf6a91c9385_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

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_d5e694be19a9867676f26bf6a91c9385_cryptolocker.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\lossy.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-02_d5e694be19a9867676f26bf6a91c9385_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_d5e694be19a9867676f26bf6a91c9385_cryptolocker.exe"

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

"C:\Users\Admin\AppData\Local\Temp\lossy.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 2ndry.com udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.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 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 2ndry.com udp
US 8.8.8.8:53 95.16.208.104.in-addr.arpa udp

Files

memory/3076-0-0x0000000008000000-0x000000000800A000-memory.dmp

memory/3076-1-0x0000000002040000-0x0000000002046000-memory.dmp

memory/3076-2-0x0000000002070000-0x0000000002076000-memory.dmp

memory/3076-9-0x0000000002040000-0x0000000002046000-memory.dmp

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

MD5 b928327676574ade9802e08310744208
SHA1 c51bf7259d5f7a1fe25f22acdd40af8554b668af
SHA256 6ba95cc793c681a4ef51f5e2d2ab101031dd896ef9f3065f8e8c2b203846fb30
SHA512 82b82a6ec4205f72813e24482bb724f8a56bea5e84452eb0b33569203f5c113741f647f86226704dd205dbe7c7a881934cc309f2048094dfe2a581469b142fdc

memory/860-17-0x0000000008000000-0x000000000800A000-memory.dmp

memory/3076-18-0x0000000008000000-0x000000000800A000-memory.dmp

memory/860-20-0x00000000020F0000-0x00000000020F6000-memory.dmp

memory/860-26-0x0000000000590000-0x0000000000596000-memory.dmp

memory/860-27-0x0000000008000000-0x000000000800A000-memory.dmp