Analysis Overview
SHA256
18cdbd760961bbe45ab6dac098badab8556e5c28cd24744c58f84eb3255da992
Threat Level: Known bad
The file Cooperbuild34.exe was found to be: Known bad.
Malicious Activity Summary
Stealerium
Stealerium family
Checks computer location settings
Unsigned PE
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Delays execution with timeout.exe
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-03-19 13:09
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 13:09
Reported
2025-03-19 13:11
Platform
win7-20250207-en
Max time kernel
121s
Max time network
121s
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\229d6ac9-ce43-4138-8f89-68806683e59f.bat"
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\taskkill.exe
taskkill /F /PID 2072
C:\Windows\system32\timeout.exe
timeout /T 2 /NOBREAK
Network
Files
memory/2072-0-0x000007FEF5EB3000-0x000007FEF5EB4000-memory.dmp
memory/2072-1-0x0000000000B10000-0x000000000121E000-memory.dmp
memory/2072-2-0x000007FEF5EB0000-0x000007FEF689C000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\229d6ac9-ce43-4138-8f89-68806683e59f.bat
| MD5 | 3645127da67c01781fc6724df29c23d2 |
| SHA1 | d7e2c1a31afd216dbe6657fec7087424b313e809 |
| SHA256 | 87521f0dd17aca0d4c66aba55f5cdd866e022b1efbed558096328edda7c402e3 |
| SHA512 | 3c0237135f8de05fa7e9e397fd6bc025a11e5eefcec52bdccadee1c129beb23ba091ca5cacfcf12a0cf9a7ee7b3ce38405b86a9f4adc4ad899556689d0326522 |
memory/2072-7-0x000007FEF5EB0000-0x000007FEF689C000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-03-19 13:09
Reported
2025-03-19 13:11
Platform
win10v2004-20250314-en
Max time kernel
105s
Max time network
112s
Command Line
Signatures
Stealerium
Stealerium family
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000\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 4828 wrote to memory of 5820 | N/A | C:\Users\Admin\AppData\Local\Temp\Cooperbuild34.exe | C:\Windows\System32\cmd.exe |
| PID 4828 wrote to memory of 5820 | N/A | C:\Users\Admin\AppData\Local\Temp\Cooperbuild34.exe | C:\Windows\System32\cmd.exe |
| PID 5820 wrote to memory of 1328 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\chcp.com |
| PID 5820 wrote to memory of 1328 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\chcp.com |
| PID 5820 wrote to memory of 2804 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\taskkill.exe |
| PID 5820 wrote to memory of 2804 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\taskkill.exe |
| PID 5820 wrote to memory of 3912 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\timeout.exe |
| PID 5820 wrote to memory of 3912 | 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\9c86b95a-a76d-4dd6-8a4b-63d2106be58f.bat"
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\taskkill.exe
taskkill /F /PID 4828
C:\Windows\system32\timeout.exe
timeout /T 2 /NOBREAK
Network
| Country | Destination | Domain | Proto |
| GB | 142.250.187.195:80 | c.pki.goog | tcp |
Files
memory/4828-0-0x00007FFFDCDE3000-0x00007FFFDCDE5000-memory.dmp
memory/4828-1-0x0000012F43D40000-0x0000012F4444E000-memory.dmp
memory/4828-2-0x00007FFFDCDE0000-0x00007FFFDD8A1000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\9c86b95a-a76d-4dd6-8a4b-63d2106be58f.bat
| MD5 | 5177fd1761d42d1aad35da64c355db37 |
| SHA1 | b48c8785f43f65425d2d0d1b825ad497c1bb0703 |
| SHA256 | b5137698e167e822092c3929918964f72a79f8ef5fc2e65afa3341df1a8f33d7 |
| SHA512 | 31e83191f4334b97ba468b6e6785c28994cd3b51d504ed1d122cd691c5a07b4d10e3fd9ddcef95d54237d11ad93fbc2dcb932365b20e1e2161d8f3ce04a170f1 |
memory/4828-7-0x00007FFFDCDE0000-0x00007FFFDD8A1000-memory.dmp