Analysis
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max time kernel
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max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
14/03/2024, 06:34
Behavioral task
behavioral1
Sample
c7edd4f4920f3dbef01fa5ff25d1bfb4.exe
Resource
win7-20240221-en
General
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Target
c7edd4f4920f3dbef01fa5ff25d1bfb4.exe
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Size
24KB
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MD5
c7edd4f4920f3dbef01fa5ff25d1bfb4
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SHA1
cc6d41e8fe35de57cecb68599ab8f772c61bc2b3
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SHA256
5c414534767e207155d978b785c26c957fe176d2a4a91fcb7f626ddb086e40fd
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SHA512
d1a09069304f0762d068a8b4049357367a03012c662bb6fa237451a88a1e83a4e7cee9a16c753f05aa4fef4cac5fc3ac3f313a83035454dec7ec2d5ee49118a3
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SSDEEP
768:nPlVoufxw3E7zGz0UVO+7q9n6nPsdZaIop:PlVoKxw3EvI7I6nghO
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 4436 WaterMark.exe -
resource yara_rule behavioral2/memory/1444-0-0x0000000000400000-0x0000000000413000-memory.dmp upx behavioral2/memory/1444-4-0x0000000000400000-0x0000000000413000-memory.dmp upx behavioral2/files/0x000f000000023154-3.dat upx behavioral2/memory/4436-12-0x0000000000400000-0x0000000000413000-memory.dmp upx -
Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\px4074.tmp c7edd4f4920f3dbef01fa5ff25d1bfb4.exe File created C:\Program Files (x86)\Microsoft\WaterMark.exe c7edd4f4920f3dbef01fa5ff25d1bfb4.exe File opened for modification C:\Program Files (x86)\Microsoft\WaterMark.exe c7edd4f4920f3dbef01fa5ff25d1bfb4.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 2460 1568 WerFault.exe 89 -
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31094233" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "417163045" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{E9C2391C-E1CC-11EE-AE4D-DA3E94F6CD86} = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31094233" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31094233" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3192726902" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3190227453" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3190227453" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\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 -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 4436 WaterMark.exe 4436 WaterMark.exe 4436 WaterMark.exe 4436 WaterMark.exe 4436 WaterMark.exe 4436 WaterMark.exe 4436 WaterMark.exe 4436 WaterMark.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4436 WaterMark.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3220 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 3220 iexplore.exe 3220 iexplore.exe 1544 IEXPLORE.EXE 1544 IEXPLORE.EXE 1544 IEXPLORE.EXE 1544 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 17 IoCs
description pid Process procid_target PID 1444 wrote to memory of 4436 1444 c7edd4f4920f3dbef01fa5ff25d1bfb4.exe 88 PID 1444 wrote to memory of 4436 1444 c7edd4f4920f3dbef01fa5ff25d1bfb4.exe 88 PID 1444 wrote to memory of 4436 1444 c7edd4f4920f3dbef01fa5ff25d1bfb4.exe 88 PID 4436 wrote to memory of 1568 4436 WaterMark.exe 89 PID 4436 wrote to memory of 1568 4436 WaterMark.exe 89 PID 4436 wrote to memory of 1568 4436 WaterMark.exe 89 PID 4436 wrote to memory of 1568 4436 WaterMark.exe 89 PID 4436 wrote to memory of 1568 4436 WaterMark.exe 89 PID 4436 wrote to memory of 1568 4436 WaterMark.exe 89 PID 4436 wrote to memory of 1568 4436 WaterMark.exe 89 PID 4436 wrote to memory of 1568 4436 WaterMark.exe 89 PID 4436 wrote to memory of 1568 4436 WaterMark.exe 89 PID 4436 wrote to memory of 3220 4436 WaterMark.exe 98 PID 4436 wrote to memory of 3220 4436 WaterMark.exe 98 PID 3220 wrote to memory of 1544 3220 iexplore.exe 99 PID 3220 wrote to memory of 1544 3220 iexplore.exe 99 PID 3220 wrote to memory of 1544 3220 iexplore.exe 99
Processes
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C:\Users\Admin\AppData\Local\Temp\c7edd4f4920f3dbef01fa5ff25d1bfb4.exe"C:\Users\Admin\AppData\Local\Temp\c7edd4f4920f3dbef01fa5ff25d1bfb4.exe"1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1444 -
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:4436 -
C:\Windows\SysWOW64\svchost.exeC:\Windows\system32\svchost.exe3⤵PID:1568
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1568 -s 2044⤵
- Program crash
PID:2460
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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:3220 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3220 CREDAT:17410 /prefetch:24⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1544
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1568 -ip 15681⤵PID:212
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
24KB
MD5c7edd4f4920f3dbef01fa5ff25d1bfb4
SHA1cc6d41e8fe35de57cecb68599ab8f772c61bc2b3
SHA2565c414534767e207155d978b785c26c957fe176d2a4a91fcb7f626ddb086e40fd
SHA512d1a09069304f0762d068a8b4049357367a03012c662bb6fa237451a88a1e83a4e7cee9a16c753f05aa4fef4cac5fc3ac3f313a83035454dec7ec2d5ee49118a3
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee