Malware Analysis Report

2025-08-05 16:00

Sample ID 240610-g81y8adb8v
Target 2024-06-10_cd67531cb1e6243c47259271d3ba3b7c_cryptolocker
SHA256 f5cc4a283c19383da15c1a5a43c45d7b715394b56e54454cd12befce707e4d42
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

f5cc4a283c19383da15c1a5a43c45d7b715394b56e54454cd12befce707e4d42

Threat Level: Known bad

The file 2024-06-10_cd67531cb1e6243c47259271d3ba3b7c_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-10 06:34

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

2024-06-10 06:29

Reported

2024-06-10 06:38

Platform

win7-20240215-en

Max time kernel

72s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_cd67531cb1e6243c47259271d3ba3b7c_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

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\2024-06-10_cd67531cb1e6243c47259271d3ba3b7c_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-10_cd67531cb1e6243c47259271d3ba3b7c_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_cd67531cb1e6243c47259271d3ba3b7c_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/2748-0-0x0000000008000000-0x000000000800A000-memory.dmp

memory/2748-1-0x00000000001C0000-0x00000000001C6000-memory.dmp

memory/2748-2-0x00000000003F0000-0x00000000003F6000-memory.dmp

memory/2748-9-0x00000000001C0000-0x00000000001C6000-memory.dmp

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

MD5 9f401f7505a756fa839a34ab484bdc38
SHA1 e0143ab34c918f9c6a7b8defeec3d75c403d01bd
SHA256 4a4e45c1de9c7725a25e5d76531cab26d850fb40936a786d574d82fd62e55d20
SHA512 ed274148d18309e4e60310b9d9d887662db9bee2d66e76c0cd092710b4a9ae9a89d5b0d0e45d7cb0c50ccf51c83e5650413567d007ffaac412357e59ecf73fa8

memory/2748-12-0x0000000002830000-0x000000000283A000-memory.dmp

memory/2748-16-0x0000000008000000-0x000000000800A000-memory.dmp

memory/2856-17-0x0000000008000000-0x000000000800A000-memory.dmp

memory/2856-26-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/2856-19-0x0000000000380000-0x0000000000386000-memory.dmp

memory/2856-27-0x0000000008000000-0x000000000800A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-10 06:29

Reported

2024-06-10 06:39

Platform

win10v2004-20240508-en

Max time kernel

23s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_cd67531cb1e6243c47259271d3ba3b7c_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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-10_cd67531cb1e6243c47259271d3ba3b7c_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\2024-06-10_cd67531cb1e6243c47259271d3ba3b7c_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_cd67531cb1e6243c47259271d3ba3b7c_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
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.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 97.17.167.52.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 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.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 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 31.243.111.52.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 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 89.65.42.20.in-addr.arpa udp

Files

memory/848-0-0x0000000008000000-0x000000000800A000-memory.dmp

memory/848-3-0x00000000020E0000-0x00000000020E6000-memory.dmp

memory/848-2-0x00000000020C0000-0x00000000020C6000-memory.dmp

memory/3932-26-0x00000000021B0000-0x00000000021B6000-memory.dmp

memory/3932-20-0x00000000020D0000-0x00000000020D6000-memory.dmp

memory/3932-18-0x0000000008000000-0x000000000800A000-memory.dmp

memory/848-17-0x0000000008000000-0x000000000800A000-memory.dmp

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

MD5 9f401f7505a756fa839a34ab484bdc38
SHA1 e0143ab34c918f9c6a7b8defeec3d75c403d01bd
SHA256 4a4e45c1de9c7725a25e5d76531cab26d850fb40936a786d574d82fd62e55d20
SHA512 ed274148d18309e4e60310b9d9d887662db9bee2d66e76c0cd092710b4a9ae9a89d5b0d0e45d7cb0c50ccf51c83e5650413567d007ffaac412357e59ecf73fa8

memory/848-1-0x00000000020C0000-0x00000000020C6000-memory.dmp

memory/3932-27-0x0000000008000000-0x000000000800A000-memory.dmp