Malware Analysis Report

2025-04-03 19:48

Sample ID 241110-hbwtns1lav
Target 2024-11-10_502adc2c2097e2c33bd87fc5f6ca17cb_cryptolocker
SHA256 fefd5a2c2f5dacb9ef4d5b2f625413ad664e0821321262dfefa6a18b738337a6
Tags
upx discovery
score
7/10

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
7/10

SHA256

fefd5a2c2f5dacb9ef4d5b2f625413ad664e0821321262dfefa6a18b738337a6

Threat Level: Shows suspicious behavior

The file 2024-11-10_502adc2c2097e2c33bd87fc5f6ca17cb_cryptolocker was found to be: Shows suspicious behavior.

Malicious Activity Summary

upx discovery

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

UPX packed file

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-10 06:34

Signatures

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-10 06:34

Reported

2024-11-10 06:36

Platform

win7-20240903-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-11-10_502adc2c2097e2c33bd87fc5f6ca17cb_cryptolocker.exe"

Signatures

Executes dropped EXE

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-11-10_502adc2c2097e2c33bd87fc5f6ca17cb_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

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2024-11-10_502adc2c2097e2c33bd87fc5f6ca17cb_cryptolocker.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\misid.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-11-10_502adc2c2097e2c33bd87fc5f6ca17cb_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-11-10_502adc2c2097e2c33bd87fc5f6ca17cb_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 bestccc.com udp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
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IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp

Files

memory/2704-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2704-1-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2704-2-0x0000000000280000-0x0000000000286000-memory.dmp

memory/2704-9-0x0000000000240000-0x0000000000246000-memory.dmp

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

MD5 a2e8ca2d9a73203387aa39aa84536c7b
SHA1 b0a6043d08eaaa14f81d20e5b9bceb6053a716f2
SHA256 a50212ad94a4d69de644ca0643f69d4d5db1958165de7ec42bda219c4afec8b9
SHA512 a39005a8fe05911971a80ec11d02ec1cdf014be7a224332f650db99a1347446d2fc77bc36c8d8ecc6b73f6493bbe91790d448011f5717ec0f012819167359d5c

memory/2704-14-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2832-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/2832-24-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-10 06:34

Reported

2024-11-10 06:36

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-11-10_502adc2c2097e2c33bd87fc5f6ca17cb_cryptolocker.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-11-10_502adc2c2097e2c33bd87fc5f6ca17cb_cryptolocker.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\misid.exe N/A

Executes dropped EXE

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2024-11-10_502adc2c2097e2c33bd87fc5f6ca17cb_cryptolocker.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\misid.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-11-10_502adc2c2097e2c33bd87fc5f6ca17cb_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-11-10_502adc2c2097e2c33bd87fc5f6ca17cb_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 bestccc.com udp
IN 103.91.187.97:443 bestccc.com tcp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 crl.comodoca.com udp
US 104.18.38.233:80 crl.comodoca.com tcp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 97.187.91.103.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 23.149.64.172.in-addr.arpa udp
US 8.8.8.8:53 233.38.18.104.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 103.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/3004-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/3004-1-0x0000000000520000-0x0000000000526000-memory.dmp

memory/3004-2-0x0000000000520000-0x0000000000526000-memory.dmp

memory/3004-3-0x0000000000680000-0x0000000000686000-memory.dmp

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

MD5 a2e8ca2d9a73203387aa39aa84536c7b
SHA1 b0a6043d08eaaa14f81d20e5b9bceb6053a716f2
SHA256 a50212ad94a4d69de644ca0643f69d4d5db1958165de7ec42bda219c4afec8b9
SHA512 a39005a8fe05911971a80ec11d02ec1cdf014be7a224332f650db99a1347446d2fc77bc36c8d8ecc6b73f6493bbe91790d448011f5717ec0f012819167359d5c

memory/3004-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/3220-19-0x0000000001F70000-0x0000000001F76000-memory.dmp

memory/3220-25-0x00000000006B0000-0x00000000006B6000-memory.dmp

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

MD5 a34ac19f4afae63adc5d2f7bc970c07f
SHA1 a82190fc530c265aa40a045c21770d967f4767b8
SHA256 d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3
SHA512 42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

memory/3220-48-0x0000000000500000-0x0000000000510000-memory.dmp