Malware Analysis Report

2025-08-06 00:20

Sample ID 240528-beldsahh62
Target 2024-05-28_71b85f8f9bdda0f45c9fd6b22f342142_avoslocker_revil
SHA256 3b13956e01f32ecaaefabaa2c17c4b3be4d47299f1f84fc1dd810eb52b3f60d2
Tags
discovery
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

3b13956e01f32ecaaefabaa2c17c4b3be4d47299f1f84fc1dd810eb52b3f60d2

Threat Level: Known bad

The file 2024-05-28_71b85f8f9bdda0f45c9fd6b22f342142_avoslocker_revil was found to be: Known bad.

Malicious Activity Summary

discovery

Detects executables manipulated with Fody

Drops file in Drivers directory

Executes dropped EXE

Drops desktop.ini file(s)

Checks installed software on the system

Drops file in Windows directory

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-28 01:03

Signatures

Detects executables manipulated with Fody

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

2024-05-28 01:03

Reported

2024-05-28 01:06

Platform

win7-20240508-en

Max time kernel

119s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-28_71b85f8f9bdda0f45c9fd6b22f342142_avoslocker_revil.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-28_71b85f8f9bdda0f45c9fd6b22f342142_avoslocker_revil.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-28_71b85f8f9bdda0f45c9fd6b22f342142_avoslocker_revil.exe"

C:\Users\Admin\AppData\Local\Temp\3e8f232db3f74d158dab54c016b0a1bc.exe

"C:\Users\Admin\AppData\Local\Temp\3e8f232db3f74d158dab54c016b0a1bc.exe" --01

Network

N/A

Files

memory/2848-0-0x000007FEF616E000-0x000007FEF616F000-memory.dmp

memory/2848-1-0x000007FEF5EB0000-0x000007FEF684D000-memory.dmp

memory/2848-2-0x000007FEF5EB0000-0x000007FEF684D000-memory.dmp

memory/2848-3-0x000007FEF5EB0000-0x000007FEF684D000-memory.dmp

memory/2848-4-0x000000001B420000-0x000000001B44E000-memory.dmp

memory/2848-5-0x00000000005F0000-0x00000000005FA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\3e8f232db3f74d158dab54c016b0a1bc.exe

MD5 02e6bf47f5315e8da515ccae63f58a6e
SHA1 3469eec2964080610b188eceabc216a5f0244d2b
SHA256 aad9c5c01c5c87d33da0695c53eb0bdae432d41452a2f54ddc1f23eb14928517
SHA512 949bf7ff8eaa37a0c036af580f6bde633aec5336312f1c96d879aaf2398ee05f82a9d84ce002937b95382bedf2e7143e894b8d0feec478d074a1a3e1baf1d031

memory/2848-12-0x00000000002E0000-0x00000000002F0000-memory.dmp

memory/2848-13-0x000007FEF5EB0000-0x000007FEF684D000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-28 01:03

Reported

2024-05-28 01:06

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-28_71b85f8f9bdda0f45c9fd6b22f342142_avoslocker_revil.exe"

Signatures

Drops file in Drivers directory

Description Indicator Process Target
File opened for modification C:\Windows\System32\drivers\etc\hosts C:\Users\Admin\AppData\Local\Temp\2024-05-28_71b85f8f9bdda0f45c9fd6b22f342142_avoslocker_revil.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\0f776b535afb459fab05aebf04fcdf8d.exe N/A

Checks installed software on the system

discovery

Drops desktop.ini file(s)

Description Indicator Process Target
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\2024-05-28_71b85f8f9bdda0f45c9fd6b22f342142_avoslocker_revil.exe N/A
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\2024-05-28_71b85f8f9bdda0f45c9fd6b22f342142_avoslocker_revil.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\assembly C:\Users\Admin\AppData\Local\Temp\2024-05-28_71b85f8f9bdda0f45c9fd6b22f342142_avoslocker_revil.exe N/A
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\2024-05-28_71b85f8f9bdda0f45c9fd6b22f342142_avoslocker_revil.exe N/A
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\2024-05-28_71b85f8f9bdda0f45c9fd6b22f342142_avoslocker_revil.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-28_71b85f8f9bdda0f45c9fd6b22f342142_avoslocker_revil.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-28_71b85f8f9bdda0f45c9fd6b22f342142_avoslocker_revil.exe"

C:\Users\Admin\AppData\Local\Temp\0f776b535afb459fab05aebf04fcdf8d.exe

"C:\Users\Admin\AppData\Local\Temp\0f776b535afb459fab05aebf04fcdf8d.exe" --01

Network

Country Destination Domain Proto
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.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 67.31.126.40.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa 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 26.173.189.20.in-addr.arpa udp

Files

memory/4592-0-0x00007FF80DF50000-0x00007FF80E145000-memory.dmp

memory/4592-2-0x00007FF80DF50000-0x00007FF80E145000-memory.dmp

memory/4592-1-0x00007FF80DF50000-0x00007FF80E145000-memory.dmp

memory/4592-3-0x000000001C160000-0x000000001C62E000-memory.dmp

memory/4592-4-0x000000001C6D0000-0x000000001C76C000-memory.dmp

memory/4592-5-0x0000000001700000-0x0000000001708000-memory.dmp

memory/4592-6-0x000000001CA30000-0x000000001CA5E000-memory.dmp

memory/4592-9-0x000000001D830000-0x000000001D83A000-memory.dmp

memory/4592-11-0x00007FF80DF50000-0x00007FF80E145000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\0f776b535afb459fab05aebf04fcdf8d.exe

MD5 02e6bf47f5315e8da515ccae63f58a6e
SHA1 3469eec2964080610b188eceabc216a5f0244d2b
SHA256 aad9c5c01c5c87d33da0695c53eb0bdae432d41452a2f54ddc1f23eb14928517
SHA512 949bf7ff8eaa37a0c036af580f6bde633aec5336312f1c96d879aaf2398ee05f82a9d84ce002937b95382bedf2e7143e894b8d0feec478d074a1a3e1baf1d031

memory/4592-16-0x000000001C790000-0x000000001C7A0000-memory.dmp

memory/4592-17-0x000000001D840000-0x000000001D860000-memory.dmp

memory/4592-18-0x000000001D8E0000-0x000000001D8F8000-memory.dmp

memory/4592-20-0x00007FF80DF50000-0x00007FF80E145000-memory.dmp