Analysis Overview
SHA256
2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a
Threat Level: Known bad
The file 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a was found to be: Known bad.
Malicious Activity Summary
Cosmu family
Cosmu
Detects Cosmu payload
Renames multiple (333) files with added filename extension
Renames multiple (350) files with added filename extension
Drops file in Program Files directory
System Location Discovery: System Language Discovery
Unsigned PE
MITRE ATT&CK
Enterprise Matrix V16
Analysis: static1
Detonation Overview
Reported
2025-05-29 11:56
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-05-29 11:55
Reported
2025-05-29 11:58
Platform
win10v2004-20250502-en
Max time kernel
150s
Max time network
137s
Command Line
Signatures
Cosmu
Cosmu family
Detects Cosmu payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Renames multiple (333) files with added filename extension
Drops file in Program Files directory
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe
"C:\Users\Admin\AppData\Local\Temp\2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | c.pki.goog | udp |
| NL | 142.250.27.94:80 | c.pki.goog | tcp |
Files
C:\$Recycle.Bin\S-1-5-21-3674642747-2260306818-3009887879-1000\desktop.ini.tmp
| MD5 | 819592e45f0069a2e7bf1a1cc7a2f905 |
| SHA1 | 9cb2e02292bc1bfe0864e85a9013e41ad69481fc |
| SHA256 | 1cf5da50ce1f71a7e32b48433d1acbf1e475dcba33b6308e0c922f2f53a65090 |
| SHA512 | feaf7e7640c6e3f3cc548cbdd509e5ce31cf1857d055ff416c87b4ee1a9e5f1cf9197e834e828f6d4e2595cc7cb1a0a9516927e32703b06645e930944a507d5c |
C:\967f022c4c136664abfad56c1fb73a\2010_x86.log.html.tmp
| MD5 | 99d30de333585091fc90a1144a77853f |
| SHA1 | cd0ce1c2ebe12685927a122c92cb949a151065c3 |
| SHA256 | bc8d0500c315070bc3a99fc24ffa600e40a9259101d36ebd4f1c4382fb14fd92 |
| SHA512 | ea76c0d496028c70884402434899a705c27de979af8cc69716da7da49b0342b1bfb9bd2e809675f7cec8d3a8c3e1506cdd3f6e91f3ec90e79a996681fb3eb0b2 |
memory/2268-85-0x0000000000400000-0x0000000000407000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-05-29 11:55
Reported
2025-05-29 11:58
Platform
win11-20250502-en
Max time kernel
150s
Max time network
102s
Command Line
Signatures
Cosmu
Cosmu family
Detects Cosmu payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Renames multiple (350) files with added filename extension
Drops file in Program Files directory
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe
"C:\Users\Admin\AppData\Local\Temp\2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe"
Network
Files
C:\$Recycle.Bin\S-1-5-21-1283078542-320785498-2248628612-1000\desktop.ini.tmp
| MD5 | 16e1dcf6610233508b5f47884929c6a1 |
| SHA1 | e1da555385fdf75824129e02b5da423892f9e5b3 |
| SHA256 | c5292dcca371b6144f751a06b6ea83c1a04c6a92d9cba0d8b6c24b3ecd6c985c |
| SHA512 | 9ccc1e0bf0c23f264045778b655804583a11619f1ccc88c0c73bd6a4c34c192717bf93fa54bbe9906cb7da7b02bdf4323c88c73edb72b2ec146397678a781ad2 |
C:\caf455ed4ae411b0ba0aa2\2010_x64.log.html.tmp
| MD5 | e5778a5a0aa7ae43828bcc33ba2d4fcd |
| SHA1 | 31795adc08f4f6cc737bbbe35ba138193823d048 |
| SHA256 | 3cda5bcd692b443e01775f0eeb2cc1acf479cf59dddf9c7e5ca2e47c2dc7a821 |
| SHA512 | 832edd962a7a5bd5a60987d5dd0377e7d2b43927ad736129de5ce8469790830e8f6dc4e74365056176f739ef83068650e66941af011b5c37ffb87b6477236acb |
memory/3724-85-0x0000000000400000-0x0000000000407000-memory.dmp