Analysis
- max time kernel
144s - max time network
146s - platform
windows7_x64 - resource
win7v20201028 - submitted
14/11/2020, 18:15
Static task
static1
Behavioral task
behavioral1
Sample
996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
- Target 996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe
- Size 222KB
- Sample201114-eddd168j2s
- SHA256 996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b
- MD5 399cdf84bac2a886200f693793df2f42
- SHA1 eb4c8e75abc65c9bc29499eab5afd5843fcc00b7
- SHA512 6b3791b98dd3d6dbefa21a7b2de8a82266124e5e5ec1ca637153dcc35476e9719fa4a9a4047d1ea844a0d1262a92a2e61b76740f95dc25b8277495ea6b113dfb
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Signatures
- Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe, C:\\Users\\Admin\\AppData\\Local\\_foldernamelocalappdata_\\winlogon32.exe" winlogon32.exe - Executes dropped EXE 4 IoCs
pid Process 1364 winlogon32.exe 1160 winlogon32.exe 1648 winlogon32.exe 1472 winlogon32.exe - Deletes itself 1 IoCs
pid Process 896 cmd.exe - Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*winlogon32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe" 996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\winlogon32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe" 996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe - Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Modifies service 2 TTPs 28 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\MSDTC Bridge 4.0.0.0\Linkage winlogon32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Windows Workflow Foundation 4.0.0.0\Linkage\Export = 570069006e0064006f0077007300200057006f0072006b0066006c006f007700200046006f0075006e0064006100740069006f006e00200034002e0030002e0030002e00300000000000 winlogon32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\.NET Memory Cache 4.0\Linkage\Export = 2e004e004500540020004d0065006d006f0072007900200043006100630068006500200034002e00300000000000 winlogon32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\ServiceModelEndpoint 3.0.0.0\Linkage winlogon32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SMSvcHost 3.0.0.0\Linkage winlogon32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Windows Workflow Foundation 4.0.0.0\Linkage winlogon32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\ServiceModelEndpoint 3.0.0.0\Linkage\Export = 53006500720076006900630065004d006f00640065006c0045006e00640070006f0069006e007400200033002e0030002e0030002e00300000000000 winlogon32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\.NET CLR Networking\Linkage winlogon32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\.NET CLR Networking 4.0.0.0\Linkage winlogon32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SMSvcHost 4.0.0.0\Linkage\Export = 53004d0053007600630048006f0073007400200034002e0030002e0030002e00300000000000 winlogon32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\ServiceModelService 3.0.0.0\Linkage winlogon32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\ServiceModelService 3.0.0.0\Linkage\Export = 53006500720076006900630065004d006f00640065006c005300650072007600690063006500200033002e0030002e0030002e00300000000000 winlogon32.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Outlook\Performance\1021 = "132498553156461216" winlogon32.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Outlook\Performance\Disable Performance Counters = "4" winlogon32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\.NET Data Provider for SqlServer\Linkage winlogon32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\ServiceModelOperation 3.0.0.0\Linkage winlogon32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Windows Workflow Foundation 3.0.0.0\Linkage\Export = 570069006e0064006f0077007300200057006f0072006b0066006c006f007700200046006f0075006e0064006100740069006f006e00200033002e0030002e0030002e00300000000000 winlogon32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\BITS\Performance winlogon32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SMSvcHost 3.0.0.0\Linkage\Export = 53004d0053007600630048006f0073007400200033002e0030002e0030002e00300000000000 winlogon32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\.NET CLR Data\Linkage winlogon32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\MSDTC Bridge 3.0.0.0\Linkage winlogon32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\MSDTC Bridge 3.0.0.0\Linkage\Export = 4d0053004400540043002000420072006900640067006500200033002e0030002e0030002e00300000000000 winlogon32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\MSDTC Bridge 4.0.0.0\Linkage\Export = 4d0053004400540043002000420072006900640067006500200034002e0030002e0030002e00300000000000 winlogon32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\.NET Data Provider for Oracle\Linkage winlogon32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\.NET Memory Cache 4.0\Linkage winlogon32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\ServiceModelOperation 3.0.0.0\Linkage\Export = 53006500720076006900630065004d006f00640065006c004f007000650072006100740069006f006e00200033002e0030002e0030002e00300000000000 winlogon32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SMSvcHost 4.0.0.0\Linkage winlogon32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Windows Workflow Foundation 3.0.0.0\Linkage winlogon32.exe - Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1356 schtasks.exe - Delays execution with timeout.exe 1 IoCs
pid Process 1684 timeout.exe - Suspicious behavior: EnumeratesProcesses 68 IoCs
pid Process 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe 1364 winlogon32.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1364 winlogon32.exe - Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 1644 wrote to memory of 1364 1644 996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe 26 PID 1644 wrote to memory of 1364 1644 996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe 26 PID 1644 wrote to memory of 1364 1644 996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe 26 PID 1644 wrote to memory of 1968 1644 996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe 27 PID 1644 wrote to memory of 1968 1644 996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe 27 PID 1644 wrote to memory of 1968 1644 996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe 27 PID 1644 wrote to memory of 896 1644 996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe 28 PID 1644 wrote to memory of 896 1644 996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe 28 PID 1644 wrote to memory of 896 1644 996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe 28 PID 896 wrote to memory of 1684 896 cmd.exe 31 PID 896 wrote to memory of 1684 896 cmd.exe 31 PID 896 wrote to memory of 1684 896 cmd.exe 31 PID 1364 wrote to memory of 1356 1364 winlogon32.exe 35 PID 1364 wrote to memory of 1356 1364 winlogon32.exe 35 PID 1364 wrote to memory of 1356 1364 winlogon32.exe 35 PID 1680 wrote to memory of 1160 1680 taskeng.exe 40 PID 1680 wrote to memory of 1160 1680 taskeng.exe 40 PID 1680 wrote to memory of 1160 1680 taskeng.exe 40 PID 1680 wrote to memory of 1648 1680 taskeng.exe 41 PID 1680 wrote to memory of 1648 1680 taskeng.exe 41 PID 1680 wrote to memory of 1648 1680 taskeng.exe 41 PID 1680 wrote to memory of 1472 1680 taskeng.exe 42 PID 1680 wrote to memory of 1472 1680 taskeng.exe 42 PID 1680 wrote to memory of 1472 1680 taskeng.exe 42
Processes
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C:\Users\Admin\AppData\Local\Temp\996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe"C:\Users\Admin\AppData\Local\Temp\996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe"1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1644 -
C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\winlogon32.exe"C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\winlogon32.exe"2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Modifies service
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1364 -
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /tn Admin /tr "\"C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\winlogon32.exe\" arguments" /sc MINUTE /mo 13⤵
- Creates scheduled task(s)
PID:1356
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe"2⤵PID:1968
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 5 && del "C:\Users\Admin\AppData\Local\Temp\996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe" && del "C:\Users\Admin\AppData\Local\Temp\996fb97f3d1725822ab85fa396ca26d30ca07636a7b344eba3cf48bcec16933b.exe.config"2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:896 -
C:\Windows\system32\timeout.exetimeout /t 53⤵
- Delays execution with timeout.exe
PID:1684
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C:\Windows\system32\wbem\WmiApSrv.exeC:\Windows\system32\wbem\WmiApSrv.exe1⤵PID:916
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C:\Windows\system32\taskeng.exetaskeng.exe {A12CCD00-0A90-45CE-9A08-E52E1EF8FCED} S-1-5-21-3825035466-2522850611-591511364-1000:EIDQHRRL\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:1680 -
C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\winlogon32.exeC:\Users\Admin\AppData\Local\_foldernamelocalappdata_\winlogon32.exe arguments2⤵
- Executes dropped EXE
PID:1160
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C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\winlogon32.exeC:\Users\Admin\AppData\Local\_foldernamelocalappdata_\winlogon32.exe arguments2⤵
- Executes dropped EXE
PID:1648
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C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\winlogon32.exeC:\Users\Admin\AppData\Local\_foldernamelocalappdata_\winlogon32.exe arguments2⤵
- Executes dropped EXE
PID:1472
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