Analysis Overview
SHA256
426594f4f8de8517a0fab00a6d359b86b5bbbca3adb4f700bbdc568732764222
Threat Level: Known bad
The file 426594f4f8de8517a0fab00a6d359b86b5bbbca3adb4f700bbdc568732764222 was found to be: Known bad.
Malicious Activity Summary
Imminent RAT
Executes dropped EXE
Checks computer location settings
Loads dropped DLL
Adds Run key to start application
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-07-08 02:40
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-07-08 02:40
Reported
2022-07-08 06:52
Platform
win7-20220414-en
Max time kernel
153s
Max time network
160s
Command Line
Signatures
Imminent RAT
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\426594f4f8de8517a0fab00a6d359b86b5bbbca3adb4f700bbdc568732764222.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce | C:\Windows\SysWOW64\reg.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Load = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\DwiDesk\\Polka.lnk" | C:\Windows\SysWOW64\reg.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 892 set thread context of 564 | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe |
Enumerates physical storage devices
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe | N/A |
| Token: 33 | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\426594f4f8de8517a0fab00a6d359b86b5bbbca3adb4f700bbdc568732764222.exe
"C:\Users\Admin\AppData\Local\Temp\426594f4f8de8517a0fab00a6d359b86b5bbbca3adb4f700bbdc568732764222.exe"
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.exe" -n
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c reg add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce" /v "Load" /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.lnk" /f
C:\Windows\SysWOW64\reg.exe
reg add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce" /v "Load" /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.lnk" /f
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
Network
| Country | Destination | Domain | Proto |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp |
Files
memory/1460-54-0x0000000001130000-0x000000000122A000-memory.dmp
memory/1460-55-0x00000000769D1000-0x00000000769D3000-memory.dmp
memory/1460-56-0x0000000000C20000-0x0000000000C92000-memory.dmp
\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.exe
| MD5 | c46f2eda74470e99d272d4141a4de5e0 |
| SHA1 | 446e2f10d6e8839df415aa17f0108189e3ba64bd |
| SHA256 | 426594f4f8de8517a0fab00a6d359b86b5bbbca3adb4f700bbdc568732764222 |
| SHA512 | ede9a9b207a1178b45bdf4acbfd0d0f60454bd15c56c8c1ac8a870504705cbd9d300dfe9341f677e81fa51ad8d0ac7a379b3e6d895c8c7b6c1cb8d410265173b |
memory/892-58-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.exe
| MD5 | c46f2eda74470e99d272d4141a4de5e0 |
| SHA1 | 446e2f10d6e8839df415aa17f0108189e3ba64bd |
| SHA256 | 426594f4f8de8517a0fab00a6d359b86b5bbbca3adb4f700bbdc568732764222 |
| SHA512 | ede9a9b207a1178b45bdf4acbfd0d0f60454bd15c56c8c1ac8a870504705cbd9d300dfe9341f677e81fa51ad8d0ac7a379b3e6d895c8c7b6c1cb8d410265173b |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.exe
| MD5 | c46f2eda74470e99d272d4141a4de5e0 |
| SHA1 | 446e2f10d6e8839df415aa17f0108189e3ba64bd |
| SHA256 | 426594f4f8de8517a0fab00a6d359b86b5bbbca3adb4f700bbdc568732764222 |
| SHA512 | ede9a9b207a1178b45bdf4acbfd0d0f60454bd15c56c8c1ac8a870504705cbd9d300dfe9341f677e81fa51ad8d0ac7a379b3e6d895c8c7b6c1cb8d410265173b |
memory/892-61-0x0000000000080000-0x000000000017A000-memory.dmp
memory/892-63-0x00000000042F0000-0x0000000004362000-memory.dmp
\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.exe
| MD5 | c46f2eda74470e99d272d4141a4de5e0 |
| SHA1 | 446e2f10d6e8839df415aa17f0108189e3ba64bd |
| SHA256 | 426594f4f8de8517a0fab00a6d359b86b5bbbca3adb4f700bbdc568732764222 |
| SHA512 | ede9a9b207a1178b45bdf4acbfd0d0f60454bd15c56c8c1ac8a870504705cbd9d300dfe9341f677e81fa51ad8d0ac7a379b3e6d895c8c7b6c1cb8d410265173b |
memory/1348-65-0x0000000000000000-mapping.dmp
memory/1500-66-0x0000000000000000-mapping.dmp
memory/892-67-0x0000000002190000-0x00000000021AA000-memory.dmp
memory/564-69-0x0000000000080000-0x00000000000DA000-memory.dmp
memory/564-68-0x0000000000080000-0x00000000000DA000-memory.dmp
memory/564-71-0x0000000000080000-0x00000000000DA000-memory.dmp
memory/564-72-0x0000000000080000-0x00000000000DA000-memory.dmp
memory/564-75-0x0000000000080000-0x00000000000DA000-memory.dmp
memory/564-74-0x0000000000080000-0x00000000000DA000-memory.dmp
memory/564-79-0x0000000000080000-0x00000000000DA000-memory.dmp
memory/564-82-0x0000000000080000-0x00000000000DA000-memory.dmp
memory/564-83-0x0000000000240000-0x0000000000250000-memory.dmp
memory/564-84-0x0000000000CF0000-0x0000000000D9E000-memory.dmp
memory/564-85-0x0000000000660000-0x0000000000688000-memory.dmp
memory/564-87-0x00000000009C0000-0x00000000009D6000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-07-08 02:40
Reported
2022-07-08 06:52
Platform
win10v2004-20220414-en
Max time kernel
152s
Max time network
157s
Command Line
Signatures
Imminent RAT
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.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\426594f4f8de8517a0fab00a6d359b86b5bbbca3adb4f700bbdc568732764222.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce | C:\Windows\SysWOW64\reg.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Load = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\DwiDesk\\Polka.lnk" | C:\Windows\SysWOW64\reg.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4060 set thread context of 4364 | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe |
Enumerates physical storage devices
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe | N/A |
| Token: 33 | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\426594f4f8de8517a0fab00a6d359b86b5bbbca3adb4f700bbdc568732764222.exe
"C:\Users\Admin\AppData\Local\Temp\426594f4f8de8517a0fab00a6d359b86b5bbbca3adb4f700bbdc568732764222.exe"
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.exe" -n
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c reg add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce" /v "Load" /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.lnk" /f
C:\Windows\SysWOW64\reg.exe
reg add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce" /v "Load" /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.lnk" /f
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
Network
| Country | Destination | Domain | Proto |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| NL | 104.110.191.133:80 | tcp | |
| NL | 104.110.191.133:80 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 20.42.73.26:443 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| GB | 92.123.143.240:80 | tcp | |
| GB | 92.123.143.240:80 | tcp | |
| GB | 92.123.143.240:80 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 8.247.211.254:80 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| NL | 8.238.21.254:80 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp | |
| US | 204.16.247.97:1966 | tcp |
Files
memory/4124-130-0x0000000000590000-0x000000000068A000-memory.dmp
memory/4124-131-0x0000000005050000-0x00000000050EC000-memory.dmp
memory/4124-132-0x0000000005760000-0x0000000005D04000-memory.dmp
memory/4124-133-0x00000000051B0000-0x0000000005242000-memory.dmp
memory/4124-134-0x0000000005020000-0x000000000502A000-memory.dmp
memory/4124-135-0x0000000005250000-0x00000000052A6000-memory.dmp
memory/4060-136-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.exe
| MD5 | c46f2eda74470e99d272d4141a4de5e0 |
| SHA1 | 446e2f10d6e8839df415aa17f0108189e3ba64bd |
| SHA256 | 426594f4f8de8517a0fab00a6d359b86b5bbbca3adb4f700bbdc568732764222 |
| SHA512 | ede9a9b207a1178b45bdf4acbfd0d0f60454bd15c56c8c1ac8a870504705cbd9d300dfe9341f677e81fa51ad8d0ac7a379b3e6d895c8c7b6c1cb8d410265173b |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\DwiDesk\Polka.exe
| MD5 | c46f2eda74470e99d272d4141a4de5e0 |
| SHA1 | 446e2f10d6e8839df415aa17f0108189e3ba64bd |
| SHA256 | 426594f4f8de8517a0fab00a6d359b86b5bbbca3adb4f700bbdc568732764222 |
| SHA512 | ede9a9b207a1178b45bdf4acbfd0d0f60454bd15c56c8c1ac8a870504705cbd9d300dfe9341f677e81fa51ad8d0ac7a379b3e6d895c8c7b6c1cb8d410265173b |
memory/4272-139-0x0000000000000000-mapping.dmp
memory/4536-140-0x0000000000000000-mapping.dmp
memory/4364-141-0x0000000000000000-mapping.dmp
memory/4364-142-0x0000000000400000-0x000000000045A000-memory.dmp
memory/4364-143-0x0000000007140000-0x00000000071A6000-memory.dmp