Malware Analysis Report

2025-08-05 16:07

Sample ID 240526-ed42aaef27
Target 2024-05-26_acb5f9593fcbd0f21f2215510aead60e_cryptolocker
SHA256 352735d3a0c69ef97f9d6f58f81db95c0ce112b1f008d01e4e7ae063bc35f2a6
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

352735d3a0c69ef97f9d6f58f81db95c0ce112b1f008d01e4e7ae063bc35f2a6

Threat Level: Known bad

The file 2024-05-26_acb5f9593fcbd0f21f2215510aead60e_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

2024-05-26 03:50

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

2024-05-26 03:50

Reported

2024-05-26 03:52

Platform

win7-20240508-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-26_acb5f9593fcbd0f21f2215510aead60e_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\hasfj.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-05-26_acb5f9593fcbd0f21f2215510aead60e_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-26_acb5f9593fcbd0f21f2215510aead60e_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-26_acb5f9593fcbd0f21f2215510aead60e_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/2156-0-0x0000000008000000-0x000000000800D000-memory.dmp

memory/2156-1-0x00000000004B0000-0x00000000004B6000-memory.dmp

memory/2156-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

memory/2156-9-0x00000000004B0000-0x00000000004B6000-memory.dmp

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

MD5 e681514b47dacff2c328674ec5afdd36
SHA1 9ed4acdea0a9bfb1d363298ca16e52a550edd060
SHA256 479d78e41422c92adb94c6b482ab4109c80da31fb3e4839dbf74e82c03da6b55
SHA512 1adf09eb5dc56f6c0ea6cce616e0846dbabcbe07441ad1ebee45ac9f342ba2c4852bb63cdb291a1456b21f7bcf0427512b0e1179675995aa9d0c1d7506aa02f4

memory/2156-13-0x0000000003530000-0x000000000353D000-memory.dmp

memory/2156-16-0x0000000008000000-0x000000000800D000-memory.dmp

memory/2484-18-0x0000000000540000-0x0000000000546000-memory.dmp

memory/2484-25-0x0000000000530000-0x0000000000536000-memory.dmp

memory/2484-26-0x0000000008000000-0x000000000800D000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-26 03:50

Reported

2024-05-26 03:52

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-26_acb5f9593fcbd0f21f2215510aead60e_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

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\2024-05-26_acb5f9593fcbd0f21f2215510aead60e_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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-26_acb5f9593fcbd0f21f2215510aead60e_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-26_acb5f9593fcbd0f21f2215510aead60e_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 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
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 26.35.223.20.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 28.118.140.52.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 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.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 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 11.227.111.52.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 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 8.8.8.8:53 200.197.79.204.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 mytarta.com udp
US 8.8.8.8:53 mytarta.com udp

Files

memory/1288-0-0x0000000008000000-0x000000000800D000-memory.dmp

memory/1288-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

memory/1288-2-0x0000000003150000-0x0000000003156000-memory.dmp

memory/1288-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

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

MD5 e681514b47dacff2c328674ec5afdd36
SHA1 9ed4acdea0a9bfb1d363298ca16e52a550edd060
SHA256 479d78e41422c92adb94c6b482ab4109c80da31fb3e4839dbf74e82c03da6b55
SHA512 1adf09eb5dc56f6c0ea6cce616e0846dbabcbe07441ad1ebee45ac9f342ba2c4852bb63cdb291a1456b21f7bcf0427512b0e1179675995aa9d0c1d7506aa02f4

memory/1288-17-0x0000000008000000-0x000000000800D000-memory.dmp

memory/2416-19-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

memory/2416-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

memory/2416-26-0x0000000008000000-0x000000000800D000-memory.dmp