Analysis Overview
SHA256
b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09
Threat Level: Known bad
The file b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe was found to be: Known bad.
Malicious Activity Summary
Blacknet family
Contains code to disable Windows Defender
BlackNET
BlackNET Payload
Executes dropped EXE
Checks computer location settings
Adds Run key to start application
Program crash
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-04-29 19:37
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
2022-04-29 19:37
Reported
2022-04-29 19:48
Platform
win7-20220414-en
Max time kernel
24s
Max time network
173s
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-1-5-21-2277218442-1199762539-2004043321-1000\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-1-5-21-2277218442-1199762539-2004043321-1000\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
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 |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1944 wrote to memory of 1316 | N/A | C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe | C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe |
| PID 1944 wrote to memory of 1316 | N/A | C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe | C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe |
| PID 1944 wrote to memory of 1316 | N/A | C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe | C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe |
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:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe"
C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | finalb.xyz | udp |
Files
memory/1944-54-0x000007FEF32C0000-0x000007FEF4356000-memory.dmp
memory/1944-55-0x000007FEFC1F1000-0x000007FEFC1F3000-memory.dmp
memory/1944-56-0x00000000006A6000-0x00000000006C5000-memory.dmp
memory/1944-57-0x00000000006ED000-0x00000000006F1000-memory.dmp
memory/1944-58-0x00000000006F1000-0x00000000006F5000-memory.dmp
memory/1944-59-0x00000000006F5000-0x00000000006F9000-memory.dmp
memory/1944-60-0x00000000006EF000-0x00000000006F2000-memory.dmp
memory/1944-61-0x00000000006FD000-0x0000000000701000-memory.dmp
memory/1944-62-0x0000000000701000-0x0000000000705000-memory.dmp
memory/1944-63-0x00000000006F4000-0x0000000000700000-memory.dmp
memory/1944-64-0x0000000000705000-0x0000000000709000-memory.dmp
memory/1944-65-0x00000000006CB000-0x00000000006DF000-memory.dmp
memory/1944-68-0x000000000070D000-0x0000000000715000-memory.dmp
memory/1944-69-0x0000000000709000-0x000000000070C000-memory.dmp
memory/1944-66-0x0000000000709000-0x000000000070D000-memory.dmp
memory/1944-67-0x00000000006F1000-0x00000000006F4000-memory.dmp
memory/1944-70-0x00000000006E1000-0x00000000006E4000-memory.dmp
memory/1944-71-0x00000000006E7000-0x00000000006EA000-memory.dmp
memory/1944-72-0x00000000006ED000-0x0000000000700000-memory.dmp
memory/1944-73-0x00000000006EF000-0x0000000000700000-memory.dmp
memory/1944-74-0x00000000006ED000-0x00000000006F1000-memory.dmp
memory/1944-75-0x00000000006F1000-0x0000000000700000-memory.dmp
memory/1316-76-0x0000000000000000-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/1316-79-0x000007FEF32C0000-0x000007FEF4356000-memory.dmp
memory/1316-81-0x0000000000A86000-0x0000000000AA5000-memory.dmp
memory/1316-82-0x0000000000ACD000-0x0000000000AD1000-memory.dmp
memory/1316-88-0x0000000000AC1000-0x0000000000AC4000-memory.dmp
memory/1316-87-0x0000000000AC7000-0x0000000000ACA000-memory.dmp
memory/1316-86-0x0000000000AB9000-0x0000000000ABC000-memory.dmp
memory/1316-83-0x0000000000AC1000-0x0000000000AC4000-memory.dmp
memory/1316-85-0x0000000000AD5000-0x0000000000AD9000-memory.dmp
memory/1316-84-0x0000000000AD1000-0x0000000000AD5000-memory.dmp
memory/1316-89-0x0000000000AAB000-0x0000000000AB6000-memory.dmp
memory/1316-96-0x0000000000ABB000-0x0000000000ABF000-memory.dmp
memory/1316-95-0x0000000000AAE000-0x0000000000AB6000-memory.dmp
memory/1316-97-0x0000000000AC1000-0x0000000000AD4000-memory.dmp
memory/1316-94-0x0000000000AC1000-0x0000000000AC4000-memory.dmp
memory/1316-93-0x0000000000AB9000-0x0000000000ABC000-memory.dmp
memory/1316-92-0x0000000000AAC000-0x0000000000AB6000-memory.dmp
memory/1316-91-0x0000000000ADF000-0x0000000000AE3000-memory.dmp
memory/1316-90-0x0000000000ADB000-0x0000000000ADF000-memory.dmp
memory/1316-98-0x0000000000ABC000-0x0000000000ABF000-memory.dmp
memory/1316-100-0x0000000000AAB000-0x0000000000AAE000-memory.dmp
memory/1316-102-0x0000000000AC8000-0x0000000000ACC000-memory.dmp
memory/1316-101-0x0000000000AB0000-0x0000000000AB6000-memory.dmp
memory/1316-99-0x0000000000AB6000-0x0000000000ABA000-memory.dmp
memory/1592-103-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe
| MD5 | 89dd6e72358a669b7d6e2348307a7af7 |
| SHA1 | 0db348f3c6114a45d71f4d218e0e088b71c7bb0a |
| SHA256 | ad34794058212006ae974fcc6a0242598e6d020f08044439e3512773cd402b7e |
| SHA512 | 93b8a47686d7491281a0809b138a6244a535302ba0d6b2146849e9888632c72b6223ae8eb7a24f1006aaf57ab947a8f43719cff4837df559e7bf42f52c63856b |
C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe
| MD5 | 89dd6e72358a669b7d6e2348307a7af7 |
| SHA1 | 0db348f3c6114a45d71f4d218e0e088b71c7bb0a |
| SHA256 | ad34794058212006ae974fcc6a0242598e6d020f08044439e3512773cd402b7e |
| SHA512 | 93b8a47686d7491281a0809b138a6244a535302ba0d6b2146849e9888632c72b6223ae8eb7a24f1006aaf57ab947a8f43719cff4837df559e7bf42f52c63856b |
memory/1592-106-0x000007FEF32C0000-0x000007FEF4356000-memory.dmp
memory/1592-107-0x0000000000AD6000-0x0000000000AF5000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-04-29 19:37
Reported
2022-04-29 19:48
Platform
win10v2004-20220414-en
Max time kernel
63s
Max time network
154s
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 |
| 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 |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\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-1-5-21-2632097139-1792035885-811742494-1000\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 |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\df7427b5e05183e625345c3c37ef31c0 = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\MyClient\\WindowsUpdate.exe" | C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.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 |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.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 |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3680 wrote to memory of 268 | N/A | C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe | C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe |
| PID 3680 wrote to memory of 268 | N/A | C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe | C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe |
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:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe"
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
dw20.exe -x -s 93992
C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 420 -p 268 -ip 268
C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 268 -s 681008
C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe"
Network
| Country | Destination | Domain | Proto |
| US | 20.189.173.4:443 | tcp | |
| US | 8.8.8.8:53 | finalb.xyz | udp |
| US | 8.8.8.8:53 | finalb.xyz | udp |
| NL | 104.123.41.162:80 | tcp | |
| US | 8.8.8.8:53 | finalb.xyz | udp |
| US | 8.8.8.8:53 | 15.89.54.20.in-addr.arpa | udp |
| NL | 20.190.160.69:443 | tcp | |
| US | 8.8.8.8:53 | finalb.xyz | udp |
| US | 8.8.8.8:53 | finalb.xyz | udp |
| US | 8.8.8.8:53 | finalb.xyz | udp |
| US | 8.8.8.8:53 | finalb.xyz | udp |
| US | 8.8.8.8:53 | finalb.xyz | udp |
| US | 8.8.8.8:53 | finalb.xyz | udp |
Files
memory/3680-130-0x0000000000B6A000-0x0000000000B6F000-memory.dmp
memory/3680-131-0x0000000021260000-0x0000000021263000-memory.dmp
memory/3680-132-0x0000000021267000-0x000000002126A000-memory.dmp
memory/3680-133-0x0000000021270000-0x0000000021275000-memory.dmp
memory/3680-134-0x0000000021275000-0x000000002127A000-memory.dmp
memory/3680-135-0x000000002126D000-0x0000000021276000-memory.dmp
memory/3680-137-0x0000000021263000-0x000000002126C000-memory.dmp
memory/3680-138-0x000000002126D000-0x0000000021279000-memory.dmp
memory/3680-136-0x0000000021261000-0x000000002126C000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
| MD5 | c4f79edc4498c5570495bb36fc942134 |
| SHA1 | 00046b588252502480e8e708a22d25ae1d9b05fa |
| SHA256 | b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09 |
| SHA512 | 07bdeb39b35835a752886c2d308a68d263b36e8372d2bf320ede5b85252d14e284985d0889dfa9fcffec7ede7c3585a46cb0165b00be903755ffe63cacb21cef |
memory/268-139-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
| MD5 | c4f79edc4498c5570495bb36fc942134 |
| SHA1 | 00046b588252502480e8e708a22d25ae1d9b05fa |
| SHA256 | b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09 |
| SHA512 | 07bdeb39b35835a752886c2d308a68d263b36e8372d2bf320ede5b85252d14e284985d0889dfa9fcffec7ede7c3585a46cb0165b00be903755ffe63cacb21cef |
memory/268-142-0x00000000016AA000-0x00000000016AF000-memory.dmp
memory/268-143-0x0000000020D90000-0x0000000020D93000-memory.dmp
memory/268-144-0x0000000020DA0000-0x0000000020DA5000-memory.dmp
memory/3484-145-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe
| MD5 | 89dd6e72358a669b7d6e2348307a7af7 |
| SHA1 | 0db348f3c6114a45d71f4d218e0e088b71c7bb0a |
| SHA256 | ad34794058212006ae974fcc6a0242598e6d020f08044439e3512773cd402b7e |
| SHA512 | 93b8a47686d7491281a0809b138a6244a535302ba0d6b2146849e9888632c72b6223ae8eb7a24f1006aaf57ab947a8f43719cff4837df559e7bf42f52c63856b |
C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe
| MD5 | 89dd6e72358a669b7d6e2348307a7af7 |
| SHA1 | 0db348f3c6114a45d71f4d218e0e088b71c7bb0a |
| SHA256 | ad34794058212006ae974fcc6a0242598e6d020f08044439e3512773cd402b7e |
| SHA512 | 93b8a47686d7491281a0809b138a6244a535302ba0d6b2146849e9888632c72b6223ae8eb7a24f1006aaf57ab947a8f43719cff4837df559e7bf42f52c63856b |
memory/2860-148-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
| MD5 | c4f79edc4498c5570495bb36fc942134 |
| SHA1 | 00046b588252502480e8e708a22d25ae1d9b05fa |
| SHA256 | b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09 |
| SHA512 | 07bdeb39b35835a752886c2d308a68d263b36e8372d2bf320ede5b85252d14e284985d0889dfa9fcffec7ede7c3585a46cb0165b00be903755ffe63cacb21cef |
memory/4404-149-0x0000000000000000-mapping.dmp
memory/4404-151-0x000000000175A000-0x000000000175F000-memory.dmp
memory/4404-152-0x0000000021C00000-0x0000000021C03000-memory.dmp
memory/4404-153-0x0000000021C10000-0x0000000021C15000-memory.dmp
memory/4404-154-0x0000000021C15000-0x0000000021C1A000-memory.dmp