Analysis Overview
SHA256
b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09
Threat Level: Known bad
The file b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe was found to be: Known bad.
Malicious Activity Summary
Contains code to disable Windows Defender
BlackNET
BlackNET Payload
Blacknet family
Adds Run key to start application
Enumerates physical storage devices
Program crash
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-04-10 19:19
Signatures
BlackNET Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Blacknet family
Contains code to disable Windows Defender
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2022-04-10 19:19
Reported
2022-04-10 19:35
Platform
win7-20220331-en
Max time kernel
31s
Max time network
46s
Command Line
Signatures
BlackNET
BlackNET Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Contains code to disable Windows Defender
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-594401021-1341801952-2355885667-1000\Software\Microsoft\Windows\CurrentVersion\Run\df7427b5e05183e625345c3c37ef31c0 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe" | C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-594401021-1341801952-2355885667-1000\Software\Microsoft\Windows\CurrentVersion\Run\df7427b5e05183e625345c3c37ef31c0 = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\MyClient\\WindowsUpdate.exe" | C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe | N/A |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\WerFault.exe | C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe
"C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe"
C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe"
C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 972 -s 708
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | finalb.xyz | udp |
Files
memory/480-54-0x000007FEEE150000-0x000007FEEF1E6000-memory.dmp
memory/480-55-0x0000000000AC0000-0x0000000000AC2000-memory.dmp
memory/480-56-0x0000000000AC6000-0x0000000000AE5000-memory.dmp
memory/480-57-0x0000000000AFC000-0x0000000000AFE000-memory.dmp
memory/480-58-0x0000000000AFE000-0x0000000000B00000-memory.dmp
memory/480-59-0x0000000000AEB000-0x0000000000AF8000-memory.dmp
memory/480-60-0x0000000000B01000-0x0000000000B03000-memory.dmp
memory/480-61-0x0000000000B03000-0x0000000000B05000-memory.dmp
memory/480-62-0x0000000000B05000-0x0000000000B07000-memory.dmp
memory/480-63-0x0000000000B07000-0x0000000000B09000-memory.dmp
memory/480-64-0x0000000000B09000-0x0000000000B0B000-memory.dmp
memory/480-65-0x0000000000B0B000-0x0000000000B0D000-memory.dmp
memory/480-66-0x0000000000B0D000-0x0000000000B11000-memory.dmp
memory/480-67-0x0000000000B11000-0x0000000000B15000-memory.dmp
memory/480-68-0x0000000000B15000-0x0000000000B19000-memory.dmp
memory/480-69-0x0000000000B1D000-0x0000000000B21000-memory.dmp
memory/480-70-0x0000000000B21000-0x0000000000B25000-memory.dmp
memory/480-71-0x0000000000B2D000-0x0000000000B35000-memory.dmp
memory/480-72-0x0000000000B35000-0x0000000000B40000-memory.dmp
memory/480-73-0x000000001F300000-0x000000001F309000-memory.dmp
memory/480-74-0x0000000000B01000-0x0000000000B04000-memory.dmp
memory/480-75-0x0000000000B07000-0x0000000000B0A000-memory.dmp
memory/480-76-0x0000000000AF9000-0x0000000000AFF000-memory.dmp
memory/480-77-0x0000000000AEC000-0x0000000000AF8000-memory.dmp
memory/480-79-0x0000000000AFA000-0x0000000000AFF000-memory.dmp
memory/480-80-0x0000000000B0D000-0x0000000000B1C000-memory.dmp
memory/480-78-0x0000000000B08000-0x0000000000B0A000-memory.dmp
memory/480-81-0x0000000000B01000-0x0000000000B03000-memory.dmp
memory/480-82-0x000000001F309000-0x000000001F311000-memory.dmp
memory/480-83-0x0000000000B10000-0x0000000000B1C000-memory.dmp
memory/972-84-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
| MD5 | c4f79edc4498c5570495bb36fc942134 |
| SHA1 | 00046b588252502480e8e708a22d25ae1d9b05fa |
| SHA256 | b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09 |
| SHA512 | 07bdeb39b35835a752886c2d308a68d263b36e8372d2bf320ede5b85252d14e284985d0889dfa9fcffec7ede7c3585a46cb0165b00be903755ffe63cacb21cef |
C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
| MD5 | c4f79edc4498c5570495bb36fc942134 |
| SHA1 | 00046b588252502480e8e708a22d25ae1d9b05fa |
| SHA256 | b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09 |
| SHA512 | 07bdeb39b35835a752886c2d308a68d263b36e8372d2bf320ede5b85252d14e284985d0889dfa9fcffec7ede7c3585a46cb0165b00be903755ffe63cacb21cef |
memory/972-87-0x000007FEEE150000-0x000007FEEF1E6000-memory.dmp
memory/972-88-0x0000000000490000-0x0000000000510000-memory.dmp
memory/972-89-0x0000000000490000-0x0000000000510000-memory.dmp
memory/1480-90-0x0000000000000000-mapping.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-04-10 19:19
Reported
2022-04-10 19:37
Platform
win10v2004-en-20220113
Max time kernel
90s
Max time network
147s
Command Line
Signatures
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4268 wrote to memory of 4300 | N/A | C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe | C:\Windows\system32\fondue.exe |
| PID 4268 wrote to memory of 4300 | N/A | C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe | C:\Windows\system32\fondue.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe
"C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe"
C:\Windows\system32\fondue.exe
"C:\Windows\system32\fondue.exe" /enable-feature:NetFx3 /caller-name:mscoreei.dll
Network
Files
memory/4300-130-0x0000000000000000-mapping.dmp