Analysis
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max time kernel
19s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
31/12/2023, 04:07
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
277b80877fc2effdede80a15a0a43db1.exe
Resource
win7-20231215-en
10 signatures
150 seconds
Behavioral task
behavioral2
Sample
277b80877fc2effdede80a15a0a43db1.exe
Resource
win10v2004-20231215-en
4 signatures
150 seconds
General
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Target
277b80877fc2effdede80a15a0a43db1.exe
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Size
167KB
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MD5
277b80877fc2effdede80a15a0a43db1
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SHA1
08abab37c0371f718cb5b6fde5402cf9e5d9eabc
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SHA256
4f8168dce8d3e492a35717c1550ccb86dbeab0e1a4e32963f5f8eb73bfdbeb1c
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SHA512
3336561ea5afea5b099a7fbc27808fc13052ea0b2694423b5be1fb05101321cd471a1da241626b8b915842d42f8d83e1152e07b7d12ed76bbc7736ba6a046e90
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SSDEEP
3072:63JBjl+LRzx8Sj3yTI9Uo66i2UmmCBl8PMFsaDSxKChgtCrWJ7Y:0JESSj7966dBLfDSxKCA7
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,c:\\program files (x86)\\microsoft\\watermark.exe" svchost.exe -
Executes dropped EXE 2 IoCs
pid Process 2388 277b80877fc2effdede80a15a0a43db1Srv.exe 3000 WaterMark.exe -
Loads dropped DLL 4 IoCs
pid Process 1636 277b80877fc2effdede80a15a0a43db1.exe 1636 277b80877fc2effdede80a15a0a43db1.exe 2388 277b80877fc2effdede80a15a0a43db1Srv.exe 2388 277b80877fc2effdede80a15a0a43db1Srv.exe -
resource yara_rule behavioral1/memory/2388-10-0x0000000000400000-0x0000000000441000-memory.dmp upx behavioral1/memory/2388-16-0x0000000000400000-0x0000000000441000-memory.dmp upx behavioral1/memory/3000-27-0x0000000000400000-0x0000000000441000-memory.dmp upx behavioral1/memory/1636-4-0x0000000000230000-0x0000000000271000-memory.dmp upx behavioral1/memory/3000-285-0x0000000000400000-0x0000000000441000-memory.dmp upx behavioral1/memory/3000-431-0x0000000000400000-0x0000000000441000-memory.dmp upx -
Drops file in System32 directory 2 IoCs
description ioc Process File created C:\Windows\SysWOW64\dmlconf.dat svchost.exe File opened for modification C:\Windows\SysWOW64\dmlconf.dat svchost.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\7-Zip\7z.exe svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\tabskb.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\VSTO\10.0\VSTOMessageProvider.dll svchost.exe File opened for modification C:\Program Files (x86)\Microsoft\WaterMark.exe 277b80877fc2effdede80a15a0a43db1Srv.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\ShapeCollector.exe svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\VSTO\10.0\VSTOLoader.dll svchost.exe File opened for modification C:\Program Files\Common Files\System\msadc\msadcf.dll svchost.exe File opened for modification C:\Program Files\Common Files\System\wab32res.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\dicjp.dll svchost.exe File opened for modification C:\Program Files\Common Files\SpeechEngines\Microsoft\TTS20\en-US\MSTTSFrontendENU.dll svchost.exe File opened for modification C:\Program Files\Common Files\System\msadc\msadcer.dll svchost.exe File opened for modification C:\Program Files\DVD Maker\Pipeline.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\MSInfo\msinfo32.exe svchost.exe File opened for modification C:\Program Files\7-Zip\7zFM.exe svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\Filters\offfiltx.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\Stationery\Orange Circles.htm svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\VGX\VGX.dll svchost.exe File opened for modification C:\Program Files\7-Zip\7z.dll svchost.exe File opened for modification C:\Program Files\Common Files\System\msadc\msadds.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\Stationery\Hand Prints.htm svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\VSTO\10.0\1033\VSTOLoaderUI.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\imjplm.dll svchost.exe File opened for modification C:\Program Files\Common Files\System\Ole DB\sqloledb.dll svchost.exe File opened for modification C:\Program Files\Common Files\System\Ole DB\msxactps.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\Microsoft.Ink.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\tiptsf.dll svchost.exe File opened for modification C:\Program Files\Common Files\SpeechEngines\Microsoft\TTS20\MSTTSEngine.dll svchost.exe File opened for modification C:\Program Files\Common Files\System\msadc\msdfmap.dll svchost.exe File opened for modification C:\Program Files\DVD Maker\OmdProject.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\micaut.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\Stationery\Shades of Blue.htm svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\Stationery\Stars.htm svchost.exe File opened for modification C:\Program Files\DVD Maker\OmdBase.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\OFFICE14\MSOXMLED.EXE svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\journal.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\mshwLatin.dll svchost.exe File opened for modification C:\Program Files\Common Files\System\ado\msadomd.dll svchost.exe File opened for modification C:\Program Files\Common Files\System\DirectDB.dll svchost.exe File opened for modification C:\Program Files (x86)\Microsoft\WaterMark.exe svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\OFFICE14\msoshext.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\OFFICE14\MSOXEV.DLL svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\VC\msdia90.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\ConvertInkStore.exe svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\Stationery\Peacock.htm svchost.exe File opened for modification C:\Program Files\Common Files\System\Ole DB\msdaps.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\OSPPSVC.EXE svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\Stationery\Garden.htm svchost.exe File opened for modification C:\Program Files\7-Zip\7zG.exe svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\VSTO\vstoee.dll svchost.exe File opened for modification C:\Program Files\Common Files\System\msadc\msadcor.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\tipskins.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\IpsMigrationPlugin.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\Stationery\Green Bubbles.htm svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\VSTO\10.0\VSTOInstaller.exe svchost.exe File opened for modification C:\Program Files\7-Zip\7-zip.dll svchost.exe File opened for modification C:\Program Files\Common Files\System\ado\msador15.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\Stationery\Bears.htm svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\OFFICE14\MSOXMLMF.DLL svchost.exe File opened for modification C:\Program Files\Common Files\System\msadc\msadce.dll svchost.exe File opened for modification C:\Program Files\Common Files\System\wab32.dll svchost.exe File created C:\Program Files (x86)\Microsoft\WaterMark.exe 277b80877fc2effdede80a15a0a43db1Srv.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\Filters\msgfilt.dll svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\Stationery\Roses.htm svchost.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\VSTO\10.0\1033\VSTOInstallerUI.dll svchost.exe -
Suspicious behavior: EnumeratesProcesses 12 IoCs
pid Process 3000 WaterMark.exe 3000 WaterMark.exe 3000 WaterMark.exe 3000 WaterMark.exe 3000 WaterMark.exe 3000 WaterMark.exe 3000 WaterMark.exe 3000 WaterMark.exe 1940 svchost.exe 1940 svchost.exe 1940 svchost.exe 1940 svchost.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 3000 WaterMark.exe Token: SeDebugPrivilege 1940 svchost.exe Token: SeDebugPrivilege 3000 WaterMark.exe Token: SeDebugPrivilege 2992 svchost.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 1636 wrote to memory of 2388 1636 277b80877fc2effdede80a15a0a43db1.exe 16 PID 1636 wrote to memory of 2388 1636 277b80877fc2effdede80a15a0a43db1.exe 16 PID 1636 wrote to memory of 2388 1636 277b80877fc2effdede80a15a0a43db1.exe 16 PID 1636 wrote to memory of 2388 1636 277b80877fc2effdede80a15a0a43db1.exe 16 PID 2388 wrote to memory of 3000 2388 277b80877fc2effdede80a15a0a43db1Srv.exe 17 PID 2388 wrote to memory of 3000 2388 277b80877fc2effdede80a15a0a43db1Srv.exe 17 PID 2388 wrote to memory of 3000 2388 277b80877fc2effdede80a15a0a43db1Srv.exe 17 PID 2388 wrote to memory of 3000 2388 277b80877fc2effdede80a15a0a43db1Srv.exe 17 PID 3000 wrote to memory of 2992 3000 WaterMark.exe 18 PID 3000 wrote to memory of 2992 3000 WaterMark.exe 18 PID 3000 wrote to memory of 2992 3000 WaterMark.exe 18 PID 3000 wrote to memory of 2992 3000 WaterMark.exe 18 PID 3000 wrote to memory of 2992 3000 WaterMark.exe 18 PID 3000 wrote to memory of 2992 3000 WaterMark.exe 18 PID 3000 wrote to memory of 2992 3000 WaterMark.exe 18 PID 3000 wrote to memory of 2992 3000 WaterMark.exe 18 PID 3000 wrote to memory of 2992 3000 WaterMark.exe 18 PID 3000 wrote to memory of 2992 3000 WaterMark.exe 18 PID 3000 wrote to memory of 1940 3000 WaterMark.exe 32 PID 3000 wrote to memory of 1940 3000 WaterMark.exe 32 PID 3000 wrote to memory of 1940 3000 WaterMark.exe 32 PID 3000 wrote to memory of 1940 3000 WaterMark.exe 32 PID 3000 wrote to memory of 1940 3000 WaterMark.exe 32 PID 3000 wrote to memory of 1940 3000 WaterMark.exe 32 PID 3000 wrote to memory of 1940 3000 WaterMark.exe 32 PID 3000 wrote to memory of 1940 3000 WaterMark.exe 32 PID 3000 wrote to memory of 1940 3000 WaterMark.exe 32 PID 3000 wrote to memory of 1940 3000 WaterMark.exe 32 PID 1940 wrote to memory of 260 1940 svchost.exe 31 PID 1940 wrote to memory of 260 1940 svchost.exe 31 PID 1940 wrote to memory of 260 1940 svchost.exe 31 PID 1940 wrote to memory of 260 1940 svchost.exe 31 PID 1940 wrote to memory of 260 1940 svchost.exe 31 PID 1940 wrote to memory of 340 1940 svchost.exe 30 PID 1940 wrote to memory of 340 1940 svchost.exe 30 PID 1940 wrote to memory of 340 1940 svchost.exe 30 PID 1940 wrote to memory of 340 1940 svchost.exe 30 PID 1940 wrote to memory of 340 1940 svchost.exe 30 PID 1940 wrote to memory of 388 1940 svchost.exe 29 PID 1940 wrote to memory of 388 1940 svchost.exe 29 PID 1940 wrote to memory of 388 1940 svchost.exe 29 PID 1940 wrote to memory of 388 1940 svchost.exe 29 PID 1940 wrote to memory of 388 1940 svchost.exe 29 PID 1940 wrote to memory of 396 1940 svchost.exe 28 PID 1940 wrote to memory of 396 1940 svchost.exe 28 PID 1940 wrote to memory of 396 1940 svchost.exe 28 PID 1940 wrote to memory of 396 1940 svchost.exe 28 PID 1940 wrote to memory of 396 1940 svchost.exe 28 PID 1940 wrote to memory of 436 1940 svchost.exe 27 PID 1940 wrote to memory of 436 1940 svchost.exe 27 PID 1940 wrote to memory of 436 1940 svchost.exe 27 PID 1940 wrote to memory of 436 1940 svchost.exe 27 PID 1940 wrote to memory of 436 1940 svchost.exe 27 PID 1940 wrote to memory of 484 1940 svchost.exe 26 PID 1940 wrote to memory of 484 1940 svchost.exe 26 PID 1940 wrote to memory of 484 1940 svchost.exe 26 PID 1940 wrote to memory of 484 1940 svchost.exe 26 PID 1940 wrote to memory of 484 1940 svchost.exe 26 PID 1940 wrote to memory of 492 1940 svchost.exe 1 PID 1940 wrote to memory of 492 1940 svchost.exe 1 PID 1940 wrote to memory of 492 1940 svchost.exe 1 PID 1940 wrote to memory of 492 1940 svchost.exe 1 PID 1940 wrote to memory of 492 1940 svchost.exe 1 PID 1940 wrote to memory of 500 1940 svchost.exe 25
Processes
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C:\Windows\system32\lsass.exeC:\Windows\system32\lsass.exe1⤵PID:492
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted1⤵PID:764
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C:\Windows\system32\sppsvc.exeC:\Windows\system32\sppsvc.exe1⤵PID:2088
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation1⤵PID:2988
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C:\Windows\system32\DllHost.exeC:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}1⤵PID:640
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceNoNetwork1⤵PID:1184
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:1168
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C:\Users\Admin\AppData\Local\Temp\277b80877fc2effdede80a15a0a43db1.exe"C:\Users\Admin\AppData\Local\Temp\277b80877fc2effdede80a15a0a43db1.exe"2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1636
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C:\Windows\system32\taskhost.exe"taskhost.exe"1⤵PID:1100
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C:\Windows\system32\Dwm.exe"C:\Windows\system32\Dwm.exe"1⤵PID:1092
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C:\Windows\System32\spoolsv.exeC:\Windows\System32\spoolsv.exe1⤵PID:1084
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k NetworkService1⤵PID:296
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService1⤵PID:988
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C:\Users\Admin\AppData\Local\Temp\277b80877fc2effdede80a15a0a43db1Srv.exeC:\Users\Admin\AppData\Local\Temp\277b80877fc2effdede80a15a0a43db1Srv.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2388 -
C:\Program Files (x86)\Microsoft\WaterMark.exe"C:\Program Files (x86)\Microsoft\WaterMark.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3000 -
C:\Windows\SysWOW64\svchost.exeC:\Windows\system32\svchost.exe3⤵
- Modifies WinLogon for persistence
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
PID:2992
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C:\Windows\SysWOW64\svchost.exeC:\Windows\system32\svchost.exe3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1940
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs1⤵PID:872
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted1⤵PID:832
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k RPCSS1⤵PID:692
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k DcomLaunch1⤵PID:608
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C:\Windows\system32\lsm.exeC:\Windows\system32\lsm.exe1⤵PID:500
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C:\Windows\system32\services.exeC:\Windows\system32\services.exe1⤵PID:484
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C:\Windows\system32\winlogon.exewinlogon.exe1⤵PID:436
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C:\Windows\system32\csrss.exe%SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=161⤵PID:396
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C:\Windows\system32\wininit.exewininit.exe1⤵PID:388
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C:\Windows\system32\csrss.exe%SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=161⤵PID:340
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C:\Windows\System32\smss.exe\SystemRoot\System32\smss.exe1⤵PID:260