Analysis Overview
SHA256
da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1
Threat Level: Known bad
The file da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1 was found to be: Known bad.
Malicious Activity Summary
Modifies visibility of file extensions in Explorer
UPX dump on OEP (original entry point)
Modifies WinLogon for persistence
Modifies visiblity of hidden/system files in Explorer
UPX dump on OEP (original entry point)
Disables use of System Restore points
Disables RegEdit via registry modification
Loads dropped DLL
Executes dropped EXE
Modifies system executable filetype association
UPX packed file
Adds Run key to start application
Drops file in System32 directory
Drops file in Windows directory
Enumerates physical storage devices
Unsigned PE
System policy modification
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies registry class
Modifies Control Panel
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-01 04:00
Signatures
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
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UPX packed file
| Description | Indicator | Process | Target |
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Unsigned PE
| Description | Indicator | Process | Target |
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Analysis: behavioral1
Detonation Overview
Submitted
2024-06-01 04:00
Reported
2024-06-01 04:03
Platform
win7-20240508-en
Max time kernel
120s
Max time network
121s
Command Line
Signatures
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Windows\\system32\\IExplorer.exe\"" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\IExplorer.exe" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
Modifies visibility of file extensions in Explorer
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
Modifies visiblity of hidden/system files in Explorer
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
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Disables RegEdit via registry modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
Disables use of System Restore points
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\xk.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\IExplorer.exe | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE | N/A |
Loads dropped DLL
Modifies system executable filetype association
UPX packed file
| Description | Indicator | Process | Target |
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Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Run\xk = "C:\\Windows\\xk.exe" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSMSGS = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\WINLOGON.EXE" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Run\ServiceAdmin = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\SERVICES.EXE" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\LogonAdmin = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\CSRSS.EXE" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\System Monitoring = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\LSASS.EXE" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\shell.exe | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| File created | C:\Windows\SysWOW64\shell.exe | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| File created | C:\Windows\SysWOW64\Mig2.scr | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| File created | C:\Windows\SysWOW64\IExplorer.exe | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\IExplorer.exe | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\Mig2.scr | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\xk.exe | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| File created | C:\Windows\xk.exe | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
Enumerates physical storage devices
Modifies Control Panel
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Control Panel\Desktop\ScreenSaveTimeOut = "600" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Control Panel\Desktop\ | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Control Panel\Desktop\SCRNSAVE.EXE = "C:\\Windows\\system32\\Mig~mig.SCR" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Control Panel\Desktop\ScreenSaverIsSecure = "0" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
Modifies registry class
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| N/A | N/A | C:\Windows\xk.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\IExplorer.exe | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE | N/A |
Suspicious use of WriteProcessMemory
System policy modification
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoFolderOptions = "1" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe
"C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe"
C:\Windows\xk.exe
C:\Windows\xk.exe
C:\Windows\SysWOW64\IExplorer.exe
C:\Windows\system32\IExplorer.exe
C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE"
C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE"
C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE"
C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE"
C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE"
Network
Files
memory/2296-0-0x0000000000400000-0x000000000042F000-memory.dmp
C:\Users\Admin\AppData\Local\services.exe
| MD5 | 08eca8d511f841708bda81cc3d9c1d8e |
| SHA1 | d02e9bdd5f24617b7c661f58da29871201b9c794 |
| SHA256 | da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1 |
| SHA512 | df551185ccfe29e286520fe661c255bff27ad2b7fefb0c566b5d2c23220b3ba5720db157dd80a05aa65cfa19349cfc5a277aa2f0ad8ffce4e6699ccb888a6182 |
C:\Windows\xk.exe
| MD5 | a6ec707e10234aac22e9d0adff2bc5b4 |
| SHA1 | 73ec514f5fb29e893995fed425a56cdcdb2f9e8d |
| SHA256 | a5a7eb4f1aa2b38a335264986e51b68246c18f21cd1edc23eb7d5efbb8e67cfa |
| SHA512 | bfc466e2becc05173a5fd46c29a0d33572a2f99ee983c0de7873fa3a1311f87e4f77aa9ad1f38e92fb26b7453da2480e055a2f00282b9e3b714d8c9e0656cce7 |
memory/1224-115-0x0000000000400000-0x000000000042F000-memory.dmp
memory/1224-113-0x0000000000400000-0x000000000042F000-memory.dmp
memory/2296-112-0x0000000001D50000-0x0000000001D7F000-memory.dmp
memory/2296-111-0x0000000001D50000-0x0000000001D7F000-memory.dmp
\Windows\SysWOW64\IExplorer.exe
| MD5 | 3788c0d990c32dbd4c90bcd5b3bf3d6f |
| SHA1 | f530d404919daf03e600bc0719e0a269d4481384 |
| SHA256 | 8ffe8bfab1ae0f760fd7c9884138a1285365bb5a959ad2e6c482a7f36bb5a1ef |
| SHA512 | 2697e3f40cf3e5cfbc8d22f671779fd7055c5fd57ef1109d6b54a5d194d84a8ec9c743a1d78d8e8c8986e3c3bd483001825f89401735309295273752ba4b1344 |
memory/2760-127-0x0000000000400000-0x000000000042F000-memory.dmp
\Users\Admin\AppData\Local\WINDOWS\WINLOGON.EXE
| MD5 | d45ff9133ef40756d81c745d64b696c5 |
| SHA1 | 31d56c208903e49b55f56c1e6dc705175b81c166 |
| SHA256 | 0395b22c135b102005e371094da9137c2ae24fde9c9e5afd05a12f66c500c66a |
| SHA512 | c9595802e1aea58c9e6def454e8051260d636147ca7d737c783a6c1286cdeafaad9b2e5e16234967b2c78db6bdb1dd80ff3566c96b2e232f314c37eb69ad4c57 |
memory/2296-134-0x0000000001D50000-0x0000000001D7F000-memory.dmp
memory/2296-133-0x0000000001D50000-0x0000000001D7F000-memory.dmp
\Users\Admin\AppData\Local\WINDOWS\CSRSS.EXE
| MD5 | 9eeb06765d71e5fa1b91b4a09266857d |
| SHA1 | c71108b4b5e0bf66e4d15db54cd15650f04cb527 |
| SHA256 | a86c9e561fb43463a64936d897ac13310b60081ace30798a52dccaf033fcc9aa |
| SHA512 | 132808c5ab99a02125b48f7927563cbe94ad90f7b67c87cd9781bd1901d1ccb0063f28655b0f5577e7c66f6ac0a86bb68f8008a14d50e0d8f9455d8ed6b12919 |
memory/2772-140-0x0000000000400000-0x000000000042F000-memory.dmp
\Users\Admin\AppData\Local\WINDOWS\SERVICES.EXE
| MD5 | 46c0257d5478d16bae9ef94ca330f3f8 |
| SHA1 | 881ce0bc5b063582848e624d9d6b9b4f13fe39b2 |
| SHA256 | 2ff5d800c5ef63b3e4d8cb5f4ace54ef5e9710d42525e56c953921f7da4dc313 |
| SHA512 | 0fd9017d95d9ca239c2e8d2092b6e9c051855bd80897e33e1cc98b2069fc7878e02c479ddc5783c1cf6630132db4987e14d382c1f7396ff84e89cdb3807320eb |
memory/1020-151-0x0000000000400000-0x000000000042F000-memory.dmp
memory/1548-161-0x0000000000400000-0x000000000042F000-memory.dmp
memory/1548-159-0x0000000000400000-0x000000000042F000-memory.dmp
memory/2296-164-0x0000000001D50000-0x0000000001D7F000-memory.dmp
\Users\Admin\AppData\Local\WINDOWS\LSASS.EXE
| MD5 | 2fb55003b024e19582b71453bab08167 |
| SHA1 | d4fe35c302c31aea8af2215acc9787f682be8791 |
| SHA256 | cc62de6243b465e250de00db006b5048dd24e379c17c5d27de9a5d73dfee1389 |
| SHA512 | a75455291293f1795e1be499edf0a878d83a943768f64ccefdc92908567a351af6becfe268d7147a44d6273bd8ca789556fa28ef0424e63a8a5118efcefae808 |
memory/2296-170-0x0000000000400000-0x000000000042F000-memory.dmp
\Users\Admin\AppData\Local\WINDOWS\SMSS.EXE
| MD5 | 8036a71cbdd84f6e150220afaa168c78 |
| SHA1 | 6f187420d427de99c5fb1f08d67f8acb8366d71f |
| SHA256 | bbafefcb9945a98bc102347fedeb7feaee8c645646871a92d59b18091dca242b |
| SHA512 | d2cd0f01b5af9f9b59283ba2467964ca24eb458ccdf6f3228b1f33e73487d96f4742ea34ccbd40e90c4f6745639cebfd7e68cb136cbb6ea1378cd5924d417395 |
memory/2388-175-0x0000000000400000-0x000000000042F000-memory.dmp
memory/2020-182-0x0000000000400000-0x000000000042F000-memory.dmp
memory/2020-187-0x0000000000400000-0x000000000042F000-memory.dmp
memory/2296-188-0x0000000000400000-0x000000000042F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-01 04:00
Reported
2024-06-01 04:03
Platform
win10v2004-20240508-en
Max time kernel
130s
Max time network
99s
Command Line
Signatures
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Windows\\system32\\IExplorer.exe\"" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\IExplorer.exe" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
Modifies visibility of file extensions in Explorer
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
Modifies visiblity of hidden/system files in Explorer
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Disables RegEdit via registry modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
Disables use of System Restore points
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\xk.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\IExplorer.exe | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE | N/A |
Modifies system executable filetype association
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\xk = "C:\\Windows\\xk.exe" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSMSGS = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\WINLOGON.EXE" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ServiceAdmin = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\SERVICES.EXE" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\LogonAdmin = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\CSRSS.EXE" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\System Monitoring = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\LSASS.EXE" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\Mig2.scr | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\shell.exe | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| File created | C:\Windows\SysWOW64\shell.exe | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| File created | C:\Windows\SysWOW64\Mig2.scr | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| File created | C:\Windows\SysWOW64\IExplorer.exe | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\IExplorer.exe | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\xk.exe | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| File created | C:\Windows\xk.exe | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
Modifies Control Panel
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\Desktop\ | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\Desktop\SCRNSAVE.EXE = "C:\\Windows\\system32\\Mig~mig.SCR" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\Desktop\ScreenSaverIsSecure = "0" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\Desktop\ScreenSaveTimeOut = "600" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
Modifies registry class
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| N/A | N/A | C:\Windows\xk.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\IExplorer.exe | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE | N/A |
Suspicious use of WriteProcessMemory
System policy modification
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoFolderOptions = "1" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" | C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe
"C:\Users\Admin\AppData\Local\Temp\da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1.exe"
C:\Windows\xk.exe
C:\Windows\xk.exe
C:\Windows\SysWOW64\IExplorer.exe
C:\Windows\system32\IExplorer.exe
C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE"
C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE"
C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE"
C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE"
C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 91.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 194.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
Files
memory/2728-0-0x0000000000400000-0x000000000042F000-memory.dmp
C:\Users\Admin\AppData\Local\winlogon.exe
| MD5 | 08eca8d511f841708bda81cc3d9c1d8e |
| SHA1 | d02e9bdd5f24617b7c661f58da29871201b9c794 |
| SHA256 | da4dff87a92b9af2aafa20a00ca67c8bac4c4e7a5693d851397ad6949f3d36f1 |
| SHA512 | df551185ccfe29e286520fe661c255bff27ad2b7fefb0c566b5d2c23220b3ba5720db157dd80a05aa65cfa19349cfc5a277aa2f0ad8ffce4e6699ccb888a6182 |
C:\Windows\xk.exe
| MD5 | 6e1552548c4c929fd5090aafdb0bf0d9 |
| SHA1 | b88e0eff4fa0707a8337e48aa9b8a80ba7ea4242 |
| SHA256 | 2d0cead97a30a42a09008b66a8e04bda720205924b83c8f3f73bd3ad33cbe64b |
| SHA512 | b11766e549b336db7233603e60c5a1691478f6f61f7ded4bafbb3cc65f76106c39a62fb4cea25bef273a6f5e6387af1b66323125b4add1333b54110fa1f0eaa3 |
memory/3332-111-0x0000000000400000-0x000000000042F000-memory.dmp
C:\Windows\SysWOW64\IExplorer.exe
| MD5 | 2fb493a5e4005cff8e879e387c5c4458 |
| SHA1 | e277b055328741377a2a16d1a63e333d8dcddc8e |
| SHA256 | d8919df377acaa5d821c993ac2a2ce55ec47d1e3d728f70bbd1d14a25c1c9df9 |
| SHA512 | 1f1c87054d1c5b087da3229aefd34da6bb29daaf59f4aa91cbb386430abcfd72c4ce4d7f24047b81c4989670ab5d014c7c1d8cfa46cd1a2248da251429f661f4 |
C:\Users\Admin\AppData\Local\WINDOWS\WINLOGON.EXE
| MD5 | ef02a20f0db596617e9596390518d0e4 |
| SHA1 | e7b93f563a3e1f818d8fc35c83eb48c445f0b4ae |
| SHA256 | a89766280c8ea81d6f0fba8955a3e2b6cb2bbc9ea4afb9dd31ab954cbd800d87 |
| SHA512 | 5a733da9424e53b9114912779205e5a0fd78490ee12d3914990706eead0a4e1a372c6bbf43978afe020e20319ee90bfafcf7215726b677e911e4993bb4cb0bb5 |
memory/2740-120-0x0000000000400000-0x000000000042F000-memory.dmp
memory/2104-126-0x0000000000400000-0x000000000042F000-memory.dmp
C:\Users\Admin\AppData\Local\WINDOWS\CSRSS.EXE
| MD5 | 60ec39dc7aa72ff0c223fa8eade22f35 |
| SHA1 | f572ec5aa0e505fce4e01f72b017bfc0673870c1 |
| SHA256 | 100bc479d954ca39f6d62c223fdfb93ff559c6db137ca6e1991a36744a0382bc |
| SHA512 | c6ce0f4a323105134b6113b7e3b129785c73975b6c286a316102f869f105ae8bc6f16264fe84cc9ec518c35c7624f44ba9bb2ca067af19834a744756e0b04b57 |
C:\Users\Admin\AppData\Local\WINDOWS\SERVICES.EXE
| MD5 | c85aca85988cad269ce466526e639d7e |
| SHA1 | c3a9659f216646b4f9095a244bb53e2c9392ec3c |
| SHA256 | 0618e6497f44f3b6a20e925d47e726da3775055cc4b6bbc9497889bb4889cf6f |
| SHA512 | 53026bc8b0dae955d6fe48ab3cd645d864853a0c762c75106d15d18c6bb593b01367960287189c167610bb60dab3223fd6faa356a85e1300908ccd41381bbe67 |
memory/4384-133-0x0000000000400000-0x000000000042F000-memory.dmp
memory/3204-137-0x0000000000400000-0x000000000042F000-memory.dmp
C:\Users\Admin\AppData\Local\WINDOWS\LSASS.EXE
| MD5 | 09d0b7a2b123b112f747dc27fbf936da |
| SHA1 | ae84c14e0b5d6a8771a18c2fcdcef5aaa9dad5da |
| SHA256 | d5fa10d2a4d3b15e496f822b67b2ad817caf93d5ad38a9992b890ca464cd01cb |
| SHA512 | 10684e4c7af9419f981840adfd618adadfff1e05ac45c82d65c64d995e80897e2fea053f3804d5d5e19826527f811c8954ca3e8a60080e533a0929dad7a3de81 |
C:\Users\Admin\AppData\Local\WINDOWS\SMSS.EXE
| MD5 | 6727710871b03c8613e66a270cb37c0e |
| SHA1 | e2b4cb80999f4f9bebe79ae8283ba62a8d9a5be8 |
| SHA256 | 3b2170beb9cbfc0353e5098d6f46628cc27f4b2be1fb2d7f14ae1f0c994b9853 |
| SHA512 | 1bb1ff5e505d28c065903708302b7b0f200e25454e68af1a90341beb4284ceeb6dace2392c06adfa22ae3de7462f0cd4f0e721cd25d0ed423a0e3ab4b007a597 |
memory/3108-146-0x0000000000400000-0x000000000042F000-memory.dmp
memory/2292-148-0x0000000000400000-0x000000000042F000-memory.dmp
memory/2728-154-0x0000000000400000-0x000000000042F000-memory.dmp
memory/2292-153-0x0000000000400000-0x000000000042F000-memory.dmp