Analysis
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max time kernel
77s -
max time network
76s -
platform
windows7_x64 -
resource
win7-20240705-en -
resource tags
arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system -
submitted
04-08-2024 16:58
Static task
static1
Behavioral task
behavioral1
Sample
Key.exe
Resource
win7-20240705-en
Behavioral task
behavioral2
Sample
Key.exe
Resource
win10v2004-20240802-en
General
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Target
Key.exe
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Size
338KB
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MD5
04fb36199787f2e3e2135611a38321eb
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SHA1
65559245709fe98052eb284577f1fd61c01ad20d
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SHA256
d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9
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SHA512
533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444
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SSDEEP
6144:sWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvC:sWkEuCaNT85I2vCMX5l+ZRv
Malware Config
Signatures
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CryptoLocker
Ransomware family with multiple variants.
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Deletes itself 1 IoCs
pid Process 1932 {34184A33-0407-212E-3320-09040709E2C2}.exe -
Executes dropped EXE 2 IoCs
pid Process 1932 {34184A33-0407-212E-3320-09040709E2C2}.exe 316 {34184A33-0407-212E-3320-09040709E2C2}.exe -
Loads dropped DLL 2 IoCs
pid Process 2400 Key.exe 1932 {34184A33-0407-212E-3320-09040709E2C2}.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows\CurrentVersion\Run\CryptoLocker = "C:\\Users\\Admin\\AppData\\Roaming\\{34184A33-0407-212E-3320-09040709E2C2}.exe" {34184A33-0407-212E-3320-09040709E2C2}.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File opened for modification C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat SearchProtocolHost.exe -
System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language {34184A33-0407-212E-3320-09040709E2C2}.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language {34184A33-0407-212E-3320-09040709E2C2}.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Key.exe -
Modifies data under HKEY_USERS 64 IoCs
description ioc Process Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32,@elscore.dll,-1 = "Microsoft Language Detection" SearchIndexer.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates SearchFilterHost.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SBE\SAL\CacheWaitForSize = "32" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32,@elscore.dll,-3 = "Microsoft Traditional Chinese to Simplified Chinese Transliteration" SearchIndexer.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum 64-bit SearchFilterHost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Multimedia\ActiveMovie SearchFilterHost.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Multimedia SearchFilterHost.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SBE\SAL\SwagBitsPerSecond = "19922944" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\system32\SampleRes.dll,-101 = "Chrysanthemum" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32,@elscore.dll,-6 = "Microsoft Cyrillic to Latin Transliteration" SearchIndexer.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\system32\MCTRes.dll,-200017 = "GobiernoUSA.gov" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32,@elscore.dll,-2 = "Microsoft Script Detection" SearchIndexer.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32,@elscore.dll,-4 = "Microsoft Simplified Chinese to Traditional Chinese Transliteration" SearchIndexer.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\system32\SampleRes.dll,-142 = "Wildlife" SearchProtocolHost.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached\{1E589E9D-8A8D-46D9-A2F9-E6D4F8161EE9} {886D8EEB-8CF2-4446-8D02-CDBA1DBDCF99} 0xFFFF = 0100000000000000704fa5c08fe6da01 SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\System32\ieframe.dll,-914 = "SVG Document" SearchProtocolHost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\My SearchFilterHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Program Files\Common Files\system\wab32res.dll,-10100 = "Contacts" SearchProtocolHost.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Direct3D SearchFilterHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\system32\SampleRes.dll,-117 = "Maid with the Flaxen Hair" SearchProtocolHost.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SBE\SAL\FileGrowthQuantumSeconds = "180" SearchProtocolHost.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SBE\SAL\NvpClientsCount = "32" SearchProtocolHost.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000 SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32,@elscore.dll,-7 = "Microsoft Devanagari to Latin Transliteration" SearchIndexer.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32,@elscore.dll,-9 = "Microsoft Bengali to Latin Transliteration" SearchIndexer.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SBE\SAL\LogMinJobWaitTimeMs = "3000" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\system32\notepad.exe,-469 = "Text Document" SearchProtocolHost.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections SearchIndexer.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SBE\SAL\CommitMaxCheckPointPageCount = "7" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@searchfolder.dll,-32822 = "Everywhere" SearchProtocolHost.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SBE\SAL\FileDiscontinuitiesPerSecond = "20" SearchProtocolHost.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings SearchProtocolHost.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SBE\SAL SearchProtocolHost.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SBE\SAL\LogInitialPageCount = "16" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\system32\SampleRes.dll,-104 = "Jellyfish" SearchProtocolHost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\System32\ieframe.dll,-913 = "MHTML Document" SearchProtocolHost.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SBE SearchProtocolHost.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SBE\SAL\CacheShortPageCount = "64" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\System32\isoburn.exe,-350 = "Disc Image File" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\System32\ieframe.dll,-12385 = "Favorites Bar" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\system32\SampleRes.dll,-108 = "Penguins" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\eHome\ehepgres.dll,-312 = "Sample Media" SearchProtocolHost.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE SearchFilterHost.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SBE\SAL\CacheLongPageCount = "32" SearchProtocolHost.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SBE\SAL\NvpRecWaitForCounts = "32" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@searchfolder.dll,-32820 = "Indexed Locations" SearchProtocolHost.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached\{45670FA8-ED97-4F44-BC93-305082590BFB} {886D8EEB-8CF2-4446-8D02-CDBA1DBDCF99} 0xFFFF = 0100000000000000104406bc8fe6da01 SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\system32\zipfldr.dll,-10195 = "Compressed (zipped) Folder" SearchProtocolHost.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SBE\SAL\LogMaxJobDemoteTimeMs = "5000" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\system32\MCTRes.dll,-200005 = "Websites for United States" SearchProtocolHost.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached\{E37A73F8-FB01-43DC-914E-AAEE76095AB9} {886D8EEB-8CF2-4446-8D02-CDBA1DBDCF99} 0xFFFF = 0100000000000000300c16c48fe6da01 SearchProtocolHost.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SBE\SAL\CriticalLowDiskSpace = "1073741824" SearchProtocolHost.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones SearchIndexer.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\System32\ieframe.dll,-10046 = "Internet Shortcut" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\System32\ieframe.dll,-912 = "HTML Document" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\system32\SampleRes.dll,-102 = "Desert" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\system32\SampleRes.dll,-107 = "Lighthouse" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\system32\SampleRes.dll,-105 = "Koala" SearchProtocolHost.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SBE\SAL\CommitMaxCheckPoitnRateMs = "10000" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\system32\xpsrchvw.exe,-106 = "XPS Document" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\system32\SampleRes.dll,-103 = "Hydrangeas" SearchProtocolHost.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\system32\unregmp2.exe,-9907 = "MIDI Sequence" SearchProtocolHost.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeManageVolumePrivilege 532 SearchIndexer.exe Token: 33 532 SearchIndexer.exe Token: SeIncBasePriorityPrivilege 532 SearchIndexer.exe -
Suspicious use of SetWindowsHookEx 11 IoCs
pid Process 1516 SearchProtocolHost.exe 1516 SearchProtocolHost.exe 1516 SearchProtocolHost.exe 1516 SearchProtocolHost.exe 1516 SearchProtocolHost.exe 1516 SearchProtocolHost.exe 1516 SearchProtocolHost.exe 1516 SearchProtocolHost.exe 1516 SearchProtocolHost.exe 1516 SearchProtocolHost.exe 1516 SearchProtocolHost.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 2400 wrote to memory of 1932 2400 Key.exe 30 PID 2400 wrote to memory of 1932 2400 Key.exe 30 PID 2400 wrote to memory of 1932 2400 Key.exe 30 PID 2400 wrote to memory of 1932 2400 Key.exe 30 PID 1932 wrote to memory of 316 1932 {34184A33-0407-212E-3320-09040709E2C2}.exe 31 PID 1932 wrote to memory of 316 1932 {34184A33-0407-212E-3320-09040709E2C2}.exe 31 PID 1932 wrote to memory of 316 1932 {34184A33-0407-212E-3320-09040709E2C2}.exe 31 PID 1932 wrote to memory of 316 1932 {34184A33-0407-212E-3320-09040709E2C2}.exe 31 PID 532 wrote to memory of 1516 532 SearchIndexer.exe 39 PID 532 wrote to memory of 1516 532 SearchIndexer.exe 39 PID 532 wrote to memory of 1516 532 SearchIndexer.exe 39 PID 532 wrote to memory of 1380 532 SearchIndexer.exe 40 PID 532 wrote to memory of 1380 532 SearchIndexer.exe 40 PID 532 wrote to memory of 1380 532 SearchIndexer.exe 40
Processes
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C:\Users\Admin\AppData\Local\Temp\Key.exe"C:\Users\Admin\AppData\Local\Temp\Key.exe"1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2400 -
C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe"C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" "/rC:\Users\Admin\AppData\Local\Temp\Key.exe"2⤵
- Deletes itself
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1932 -
C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe"C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" /w000000C83⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:316
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C:\Windows\explorer.exe"C:\Windows\explorer.exe"1⤵PID:2892
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C:\Windows\system32\SearchIndexer.exeC:\Windows\system32\SearchIndexer.exe /Embedding1⤵
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:532 -
C:\Windows\system32\SearchProtocolHost.exe"C:\Windows\system32\SearchProtocolHost.exe" Global\UsGthrFltPipeMssGthrPipe1_ Global\UsGthrCtrlFltPipeMssGthrPipe1 1 -2147483646 "Software\Microsoft\Windows Search" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT; MS Search 4.0 Robot)" "C:\ProgramData\Microsoft\Search\Data\Temp\usgthrsvc" "DownLevelDaemon"2⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:1516
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C:\Windows\system32\SearchFilterHost.exe"C:\Windows\system32\SearchFilterHost.exe" 0 516 520 528 65536 5242⤵
- Modifies data under HKEY_USERS
PID:1380
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1024KB
MD5aba3f2084ca9ac13358b60882478cac4
SHA17f659eefd6d7db53ec9d34ee4124d6a0f8bd3322
SHA256d8358a5f6e3e6eb00745997ae980417d89811d89287fd8e954871ec1f90b93bb
SHA5129ce9a0ed730fe2bba12c9c83fb1c31e9094740c70fa8cdea1625bf5c92fb5893f766a9492e52a8a9220f2dac0a20bb4659789ac8471a2645f439bd5e67d0e3da
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Filesize
338KB
MD504fb36199787f2e3e2135611a38321eb
SHA165559245709fe98052eb284577f1fd61c01ad20d
SHA256d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9
SHA512533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444