Analysis
-
max time kernel
147s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
22-06-2024 13:04
Static task
static1
Behavioral task
behavioral1
Sample
0243ce7dd550e1ed8ad6355bf37c3766_JaffaCakes118.dll
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
0243ce7dd550e1ed8ad6355bf37c3766_JaffaCakes118.dll
Resource
win10v2004-20240508-en
General
-
Target
0243ce7dd550e1ed8ad6355bf37c3766_JaffaCakes118.dll
-
Size
387KB
-
MD5
0243ce7dd550e1ed8ad6355bf37c3766
-
SHA1
e988e242290c39ba616a28f95325a737975c331a
-
SHA256
fa9bb26778829a58c0b15ea253f3b37c4d930be1b832141b371f232361c752c2
-
SHA512
ad9f60452129d71e25c1de51699be565357e0789945888de2d5e0fe07a99fb41539e5ae965f3c0403b3d67fc7a24fae514ad97110b26e6771bc14a3bfc754495
-
SSDEEP
6144:WOiKhJ6GZUYm8yeRp/f3280+NmaAWT/mMDzGpxvSxRJy5r/K3pek:nFEcUX81pAaAWLmMDz0xKJG+3pek
Malware Config
Signatures
-
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\uzotunrxwmuebgkad = "C:\\Windows\\System32\\regsvr32.exe /s \"C:\\Users\\Admin\\AppData\\Local\\Temp\\0243ce7dd550e1ed8ad6355bf37c3766_JaffaCakes118.dll\"" regsvr32.exe -
Installs/modifies Browser Helper Object 2 TTPs 2 IoCs
BHOs are DLL modules which act as plugins for Internet Explorer.
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{135D506C-0A20-3446-81D0-BE63E20CCDAF} regsvr32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{135D506C-0A20-3446-81D0-BE63E20CCDAF}\NoExplorer = "1" regsvr32.exe -
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000078f1237f04e5404da848d5bad8ef8626000000000200000000001066000000010000200000002c1a6ed5b0e65996033f9d28ca19e578d4ebedcf1ef3546c06dd94c84b68de8b000000000e8000000002000020000000391e7b3fbeb2fbdafc108421c4fb693dee86dd97ae84f3660e4e7a21e45a2c2e200000005f8fa763cc514e9ebd0daf15034e5311661e98f9b296c0dc32d1578284a829de400000002f1d606c9109d700002732185dea5f1e1246c1e1f4823b7536775caba00356af8ba2985b2e0d5dda997161824ab600c6f5e5e9494e55ead783f789120bfbf2e1 iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000078f1237f04e5404da848d5bad8ef8626000000000200000000001066000000010000200000001a02a77d1cc92b034c0ef50b6f11f85d4e7c05ad2e0bb99d2ab58486dc3c43e4000000000e8000000002000020000000c7ee8dec001ddd94a9654b0024c126edb88e8fbd37a99f54033fa5956d299b3b20000000c9f1fa24253bc111115f4b6b93fb4db1d70057dc30f611e75af08b59a16e0cd04000000064d128cbf6279e4dee4d18d33ce4ec585e17656380a333402b23e6fcabc8d8c4b53e4795401758bd48373fd369e0b463d7213340540764e6c18ecd870f7c0b05 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\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 Key created \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 50ed2deaa4c4da01 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "425223375" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{068A464E-3098-11EF-9519-C2748A3A93CE} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\MINIE iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 401935eaa4c4da01 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{135D506C-0A20-3446-81D0-BE63E20CCDAF} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{135D506C-0A20-3446-81D0-BE63E20CCDAF}\ = "precisead browser enhancer" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{135D506C-0A20-3446-81D0-BE63E20CCDAF}\InProcServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{135D506C-0A20-3446-81D0-BE63E20CCDAF}\InProcServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{135D506C-0A20-3446-81D0-BE63E20CCDAF}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\0243ce7dd550e1ed8ad6355bf37c3766_JaffaCakes118.dll" regsvr32.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3744 iexplore.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 3744 iexplore.exe 3744 iexplore.exe 4676 IEXPLORE.EXE 4676 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2508 wrote to memory of 1908 2508 regsvr32.exe 80 PID 2508 wrote to memory of 1908 2508 regsvr32.exe 80 PID 2508 wrote to memory of 1908 2508 regsvr32.exe 80 PID 3744 wrote to memory of 4676 3744 iexplore.exe 83 PID 3744 wrote to memory of 4676 3744 iexplore.exe 83 PID 3744 wrote to memory of 4676 3744 iexplore.exe 83
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\0243ce7dd550e1ed8ad6355bf37c3766_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:2508 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\0243ce7dd550e1ed8ad6355bf37c3766_JaffaCakes118.dll2⤵
- Adds Run key to start application
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:1908
-
-
C:\Program Files (x86)\Internet Explorer\ielowutil.exe"C:\Program Files (x86)\Internet Explorer\ielowutil.exe" -CLSID:{0002DF01-0000-0000-C000-000000000046} -Embedding1⤵PID:1376
-
C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe" -Embedding1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3744 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3744 CREDAT:17410 /prefetch:22⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:4676
-