Analysis
- max time kernel
146s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system - submitted
15/03/2024, 04:11
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
ca7442a1cd93d84014f0acbf1df47d4f.exe
Resource
win7-20240221-en
windows7-x64
11 signatures
150 seconds
General
- Target ca7442a1cd93d84014f0acbf1df47d4f.exe
- Size 115KB
- Sample240315-er56haaa68
- SHA256 78567e920cd1e99b1ea2b4563305bf673d52f50a38301361ce3eb501c31ce474
- MD5 ca7442a1cd93d84014f0acbf1df47d4f
- SHA1 71bc743cf067ccbe4c06f0da021e85e66082b8d3
- SHA512 cf743481e67d70f92d15310591a0d28f398185352c8f7e64c470553318bf9a86cbaf897f9494fa672f9ab10f84d98d67500ede69916c91ec803bc9b65106b991
- SSDEEP 768:o06R0Ub+gnKqGR7//GPc0LOBhvBrHks3IiyhDYQbGmxlNaM+WGa1wuxnzgOYw9I/:mR049n3Pc0LCH9MtbvabUDzJYWu3B
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 1568 WaterMark.exe -
resource yara_rule behavioral2/memory/616-2-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/616-5-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/616-7-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/616-9-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/616-8-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/616-12-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/616-14-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/1568-21-0x0000000000400000-0x0000000000450000-memory.dmp upx behavioral2/memory/1568-26-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/1568-28-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/1568-35-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/1568-38-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/1568-39-0x0000000000400000-0x0000000000421000-memory.dmp upx - Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\px5BEB.tmp ca7442a1cd93d84014f0acbf1df47d4f.exe File created C:\Program Files (x86)\Microsoft\WaterMark.exe ca7442a1cd93d84014f0acbf1df47d4f.exe File opened for modification C:\Program Files (x86)\Microsoft\WaterMark.exe ca7442a1cd93d84014f0acbf1df47d4f.exe - Program crash 1 IoCs
pid pid_target Process procid_target 3016 2748 WerFault.exe 88 -
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "417240879" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\"" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "4143631365" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31094414" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31094414" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "4123943834" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31094414" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31094414" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{21627485-E282-11EE-96FD-EA08C850D01B} = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "4123943834" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{21732686-E282-11EE-96FD-EA08C850D01B} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "4143631365" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff3e0000003e000000c4040000a3020000 iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE - Suspicious behavior: EnumeratesProcesses 16 IoCs
pid Process 1568 WaterMark.exe 1568 WaterMark.exe 1568 WaterMark.exe 1568 WaterMark.exe 1568 WaterMark.exe 1568 WaterMark.exe 1568 WaterMark.exe 1568 WaterMark.exe 1568 WaterMark.exe 1568 WaterMark.exe 1568 WaterMark.exe 1568 WaterMark.exe 1568 WaterMark.exe 1568 WaterMark.exe 1568 WaterMark.exe 1568 WaterMark.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1568 WaterMark.exe - Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 4744 iexplore.exe 400 iexplore.exe - Suspicious use of SetWindowsHookEx 10 IoCs
pid Process 400 iexplore.exe 400 iexplore.exe 4744 iexplore.exe 4744 iexplore.exe 2836 IEXPLORE.EXE 2836 IEXPLORE.EXE 3784 IEXPLORE.EXE 3784 IEXPLORE.EXE 3784 IEXPLORE.EXE 3784 IEXPLORE.EXE - Suspicious use of UnmapMainImage 2 IoCs
pid Process 616 ca7442a1cd93d84014f0acbf1df47d4f.exe 1568 WaterMark.exe - Suspicious use of WriteProcessMemory 22 IoCs
description pid Process procid_target PID 616 wrote to memory of 1568 616 ca7442a1cd93d84014f0acbf1df47d4f.exe 87 PID 616 wrote to memory of 1568 616 ca7442a1cd93d84014f0acbf1df47d4f.exe 87 PID 616 wrote to memory of 1568 616 ca7442a1cd93d84014f0acbf1df47d4f.exe 87 PID 1568 wrote to memory of 2748 1568 WaterMark.exe 88 PID 1568 wrote to memory of 2748 1568 WaterMark.exe 88 PID 1568 wrote to memory of 2748 1568 WaterMark.exe 88 PID 1568 wrote to memory of 2748 1568 WaterMark.exe 88 PID 1568 wrote to memory of 2748 1568 WaterMark.exe 88 PID 1568 wrote to memory of 2748 1568 WaterMark.exe 88 PID 1568 wrote to memory of 2748 1568 WaterMark.exe 88 PID 1568 wrote to memory of 2748 1568 WaterMark.exe 88 PID 1568 wrote to memory of 2748 1568 WaterMark.exe 88 PID 1568 wrote to memory of 400 1568 WaterMark.exe 95 PID 1568 wrote to memory of 400 1568 WaterMark.exe 95 PID 1568 wrote to memory of 4744 1568 WaterMark.exe 96 PID 1568 wrote to memory of 4744 1568 WaterMark.exe 96 PID 400 wrote to memory of 3784 400 iexplore.exe 97 PID 4744 wrote to memory of 2836 4744 iexplore.exe 98 PID 400 wrote to memory of 3784 400 iexplore.exe 97 PID 400 wrote to memory of 3784 400 iexplore.exe 97 PID 4744 wrote to memory of 2836 4744 iexplore.exe 98 PID 4744 wrote to memory of 2836 4744 iexplore.exe 98
Processes
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C:\Users\Admin\AppData\Local\Temp\ca7442a1cd93d84014f0acbf1df47d4f.exe"C:\Users\Admin\AppData\Local\Temp\ca7442a1cd93d84014f0acbf1df47d4f.exe"1⤵
- Drops file in Program Files directory
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:616 -
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 UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1568 -
C:\Windows\SysWOW64\svchost.exeC:\Windows\system32\svchost.exe3⤵PID:2748
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2748 -s 844⤵
- Program crash
PID:3016
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"3⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:400 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:400 CREDAT:17410 /prefetch:24⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:3784
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"3⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4744 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4744 CREDAT:17410 /prefetch:24⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2836
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2748 -ip 27481⤵PID:3316
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Program Files (x86)\Microsoft\WaterMark.exe
- Size 115KB
- SHA256 78567e920cd1e99b1ea2b4563305bf673d52f50a38301361ce3eb501c31ce474
- MD5 ca7442a1cd93d84014f0acbf1df47d4f
- SHA1 71bc743cf067ccbe4c06f0da021e85e66082b8d3
- SHA512 cf743481e67d70f92d15310591a0d28f398185352c8f7e64c470553318bf9a86cbaf897f9494fa672f9ab10f84d98d67500ede69916c91ec803bc9b65106b991
- SSDEEP 768:o06R0Ub+gnKqGR7//GPc0LOBhvBrHks3IiyhDYQbGmxlNaM+WGa1wuxnzgOYw9I/:mR049n3Pc0LCH9MtbvabUDzJYWu3B
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{21627485-E282-11EE-96FD-EA08C850D01B}.dat
- Size 4KB
- SHA256 20e737bdbc132c7f7bc1ad2dab75d604877c91f48ae3deb3fbcb24df43e256f6
- MD5 48f91798bd23fb7ce8f2404f7701a7fb
- SHA1 cb0c938468275a915fc8ae9a26120f103255e334
- SHA512 97aa1646b7ffeb143c0ad624627364312b4712c941501dc9eabad38061dcb51324fca6fbb8e52b1b44a0a92b72d0e4247b567ab673a55722d9fd325319b8e7f8
- SSDEEP 12:rlfFGjjrEgm8Gj76FGrDrEgmf+IaCyoqw9lTqDl12uEC9lTqDl12uPmJ:rSG8iGv/99lWDP0C9lWDP+J
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{21732686-E282-11EE-96FD-EA08C850D01B}.dat
- Size 3KB
- SHA256 342d185c9e4e78ff499072cb3619d67bc4efe71d3e9f6550df0f3d98c756610c
- MD5 8653258038ce8267eefc67aa17722dc6
- SHA1 4646862903fc7b6aa8d119eb1525d81246c48023
- SHA512 d135964db28cb05f289ed831c8b2453fbda7fc3bd292602ea10fb6ebf0a11ff4de0fd273086a4f2a70e97fe9e7497abb8b3da95b8aa7e502635f749f937dd41e
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\verF26E.tmp
- Size 15KB
- SHA256 557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1
- MD5 1a545d0052b581fbb2ab4c52133846bc
- SHA1 62f3266a9b9925cd6d98658b92adec673cbe3dd3
- SHA512 bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d
- SSDEEP 384:79Jv9DF9/C9qc9/J9V791T9TK9Xf9Nm9xQ95a9BR9fV:79Jv9DF9/C9qc9/J9V791T9TK9Xf9NmT
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\TMWGKKVJ\suggestions[1].en-US
- Size 17KB
- SHA256 c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
- MD5 5a34cb996293fde2cb7a4ac89587393a
- SHA1 3c96c993500690d1a77873cd62bc639b3a10653f
- SHA512 e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
- SSDEEP 384:K4gN8sGygaEKfWYSJUKbO7UckxtBjCdY7mO3D0C5l+piEieDSV126ry1/XSGKwG3:K4gNFXiKfWfJ1Kockxbd7mAt5Mp5ie2F
- MD5 SHA1 SHA512 SSDEEP