Analysis Overview
SHA256
18cdbd760961bbe45ab6dac098badab8556e5c28cd24744c58f84eb3255da992
Threat Level: Known bad
The file Cooperbuild34.exe was found to be: Known bad.
Malicious Activity Summary
Stealerium family
Stealerium
Checks computer location settings
Unsigned PE
Enumerates physical storage devices
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Kills process with taskkill
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-03-19 13:19
Signatures
Stealerium family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-03-19 13:19
Reported
2025-03-19 13:22
Platform
win7-20240903-en
Max time kernel
119s
Max time network
120s
Command Line
Signatures
Stealerium
Stealerium family
Enumerates physical storage devices
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\timeout.exe | N/A |
Kills process with taskkill
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Cooperbuild34.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Cooperbuild34.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\taskkill.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\Cooperbuild34.exe
"C:\Users\Admin\AppData\Local\Temp\Cooperbuild34.exe"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\0942f001-868f-4bfe-8f05-93bf3587a131.bat"
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\taskkill.exe
taskkill /F /PID 1668
C:\Windows\system32\timeout.exe
timeout /T 2 /NOBREAK
Network
Files
memory/1668-0-0x000007FEF5DC3000-0x000007FEF5DC4000-memory.dmp
memory/1668-1-0x0000000000BC0000-0x00000000012CE000-memory.dmp
memory/1668-2-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\0942f001-868f-4bfe-8f05-93bf3587a131.bat
| MD5 | 195b3d5a37375fcb4d1fa0ede1030fb9 |
| SHA1 | c57174332c9e5d7da456dc78eb978bfb00a6bcbb |
| SHA256 | 38e1cbd9d7cc2d542fde9daf5c3b28bd3b9eb45223ac11b184a2232cfdd0476d |
| SHA512 | d185b33f65ade7f3322b6976b8f61578c142df65646357745e3cad0038b52f8006c3c596a32a4fc0948f3fd76d83b78996f85903547c6869d5b00523f5a431b9 |
memory/1668-7-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-03-19 13:19
Reported
2025-03-19 13:22
Platform
win10v2004-20250314-en
Max time kernel
103s
Max time network
129s
Command Line
Signatures
Stealerium
Stealerium family
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-805952410-2104024357-1716932545-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\Cooperbuild34.exe | N/A |
Enumerates physical storage devices
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\timeout.exe | N/A |
Kills process with taskkill
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Cooperbuild34.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Cooperbuild34.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\taskkill.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4372 wrote to memory of 764 | N/A | C:\Users\Admin\AppData\Local\Temp\Cooperbuild34.exe | C:\Windows\System32\cmd.exe |
| PID 4372 wrote to memory of 764 | N/A | C:\Users\Admin\AppData\Local\Temp\Cooperbuild34.exe | C:\Windows\System32\cmd.exe |
| PID 764 wrote to memory of 208 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\chcp.com |
| PID 764 wrote to memory of 208 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\chcp.com |
| PID 764 wrote to memory of 4100 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\taskkill.exe |
| PID 764 wrote to memory of 4100 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\taskkill.exe |
| PID 764 wrote to memory of 2816 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\timeout.exe |
| PID 764 wrote to memory of 2816 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\timeout.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\Cooperbuild34.exe
"C:\Users\Admin\AppData\Local\Temp\Cooperbuild34.exe"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\e3d0bdf8-c626-406c-8d93-c21ea4ef4bf3.bat"
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\taskkill.exe
taskkill /F /PID 4372
C:\Windows\system32\timeout.exe
timeout /T 2 /NOBREAK
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | c.pki.goog | udp |
| GB | 142.250.180.3:80 | c.pki.goog | tcp |
Files
memory/4372-0-0x00007FFF4DC63000-0x00007FFF4DC65000-memory.dmp
memory/4372-1-0x000001AAABE20000-0x000001AAAC52E000-memory.dmp
memory/4372-2-0x00007FFF4DC60000-0x00007FFF4E721000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\e3d0bdf8-c626-406c-8d93-c21ea4ef4bf3.bat
| MD5 | b9fe333a3923d09bcc502f08edec936e |
| SHA1 | d260213d73ad12573b4f60ac79fdd506dd99a6ae |
| SHA256 | bbdfdfd6f277e18e73fd9026917ca535fe53fd6f842b1c82fcf764eb9127f7a6 |
| SHA512 | b370057cb0726be9260d9605b191bb558dacbbf289be68cbfac8bdcd68c4efb2e40d5f455e4c83f4eb9ea30e5a0326052a658466c4543a6b87813386596a5908 |
memory/4372-7-0x00007FFF4DC60000-0x00007FFF4E721000-memory.dmp