Malware Analysis Report

2025-06-16 07:25

Sample ID 240602-fd541sbe4v
Target 2024-06-02_c1b4053dba436cfc24d4dea6372a02d0_cryptolocker
SHA256 3866e035f11f8eb79259ff21752b6ee073cc6e38547562864601ef2065a841cf
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

3866e035f11f8eb79259ff21752b6ee073cc6e38547562864601ef2065a841cf

Threat Level: Known bad

The file 2024-06-02_c1b4053dba436cfc24d4dea6372a02d0_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

2024-06-02 04:46

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 04:46

Reported

2024-06-02 04:48

Platform

win7-20240220-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_c1b4053dba436cfc24d4dea6372a02d0_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\2024-06-02_c1b4053dba436cfc24d4dea6372a02d0_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-02_c1b4053dba436cfc24d4dea6372a02d0_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_c1b4053dba436cfc24d4dea6372a02d0_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/1720-0-0x0000000008000000-0x000000000800D000-memory.dmp

memory/1720-1-0x0000000000850000-0x0000000000856000-memory.dmp

memory/1720-2-0x0000000000860000-0x0000000000866000-memory.dmp

memory/1720-9-0x0000000000850000-0x0000000000856000-memory.dmp

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

MD5 4cce32a8eabfda6a9f8e5ac158488fae
SHA1 4b69be8019b92d2f7e9df19fc6ea05767de2634c
SHA256 3a13fae38b8af94a79d69cac9f992672f5c2466a6839c00f42a7b84a0aebbec1
SHA512 770ac8b816cc635f7953a22cc6c6a2b9dee872357b3ccc2dc4655507a4accec3c9a6941b427469dab1051a6448d1a1a3d0ad6d745e7ca911b8be52debebec84d

memory/1720-15-0x0000000008000000-0x000000000800D000-memory.dmp

memory/2504-16-0x0000000008000000-0x000000000800D000-memory.dmp

memory/2504-18-0x00000000004C0000-0x00000000004C6000-memory.dmp

memory/2504-25-0x00000000004B0000-0x00000000004B6000-memory.dmp

memory/2504-26-0x0000000008000000-0x000000000800D000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-02 04:46

Reported

2024-06-02 04:48

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_c1b4053dba436cfc24d4dea6372a02d0_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\2024-06-02_c1b4053dba436cfc24d4dea6372a02d0_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\2024-06-02_c1b4053dba436cfc24d4dea6372a02d0_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_c1b4053dba436cfc24d4dea6372a02d0_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 mytarta.com udp
US 8.8.8.8:53 133.211.185.52.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 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.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 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 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 13.227.111.52.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 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 26.73.42.20.in-addr.arpa udp

Files

memory/1892-0-0x0000000008000000-0x000000000800D000-memory.dmp

memory/1892-1-0x0000000002250000-0x0000000002256000-memory.dmp

memory/1892-2-0x0000000003150000-0x0000000003156000-memory.dmp

memory/1892-9-0x0000000002250000-0x0000000002256000-memory.dmp

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

MD5 4cce32a8eabfda6a9f8e5ac158488fae
SHA1 4b69be8019b92d2f7e9df19fc6ea05767de2634c
SHA256 3a13fae38b8af94a79d69cac9f992672f5c2466a6839c00f42a7b84a0aebbec1
SHA512 770ac8b816cc635f7953a22cc6c6a2b9dee872357b3ccc2dc4655507a4accec3c9a6941b427469dab1051a6448d1a1a3d0ad6d745e7ca911b8be52debebec84d

memory/1892-17-0x0000000008000000-0x000000000800D000-memory.dmp

memory/2080-19-0x0000000003010000-0x0000000003016000-memory.dmp

memory/2080-25-0x0000000002210000-0x0000000002216000-memory.dmp

memory/2080-26-0x0000000008000000-0x000000000800D000-memory.dmp