Analysis Overview
SHA256
58baea354fb8318158364b476a5e7b7662f4c56b6d71219b324d3c1a14b7f909
Threat Level: Likely malicious
The file 2024-06-14_4a38ede90c924aa5e3e2e1dc67f432e1_nokoyawa was found to be: Likely malicious.
Malicious Activity Summary
Renames multiple (289) files with added filename extension
Renames multiple (185) files with added filename extension
Drops desktop.ini file(s)
Enumerates connected drives
Unsigned PE
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-14 14:34
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-14 14:34
Reported
2024-06-14 14:37
Platform
win7-20240508-en
Max time kernel
119s
Max time network
120s
Command Line
Signatures
Renames multiple (289) files with added filename extension
Drops desktop.ini file(s)
Enumerates connected drives
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-14_4a38ede90c924aa5e3e2e1dc67f432e1_nokoyawa.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-14_4a38ede90c924aa5e3e2e1dc67f432e1_nokoyawa.exe"
Network
Files
C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\NOKOYAWA_readme.txt
| MD5 | 5aea0bfd70679b3285da2ce305e5d992 |
| SHA1 | bd90c1be51b76fb43dcb46d9781cfbebdf655520 |
| SHA256 | 91b4c8028e4a86fb2fa57ef0e4f01e860ba23c1fe5ed88aa84915e281a57deb5 |
| SHA512 | c5ef4fa016103775c9581010e845cca0291ce8e33bbc16fa7c4b8059367cddcdc7a02aedc26959fba3437cef70b2167d0f815fc8f3698ba0b85da447c6e0fb96 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-14 14:34
Reported
2024-06-14 14:37
Platform
win10v2004-20240508-en
Max time kernel
52s
Max time network
53s
Command Line
Signatures
Renames multiple (185) files with added filename extension
Drops desktop.ini file(s)
Enumerates connected drives
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-14_4a38ede90c924aa5e3e2e1dc67f432e1_nokoyawa.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-14_4a38ede90c924aa5e3e2e1dc67f432e1_nokoyawa.exe"
Network
Files
C:\Recovery\WindowsRE\NOKOYAWA_readme.txt
| MD5 | 5aea0bfd70679b3285da2ce305e5d992 |
| SHA1 | bd90c1be51b76fb43dcb46d9781cfbebdf655520 |
| SHA256 | 91b4c8028e4a86fb2fa57ef0e4f01e860ba23c1fe5ed88aa84915e281a57deb5 |
| SHA512 | c5ef4fa016103775c9581010e845cca0291ce8e33bbc16fa7c4b8059367cddcdc7a02aedc26959fba3437cef70b2167d0f815fc8f3698ba0b85da447c6e0fb96 |