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Analysis
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max time kernel
117s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
24/06/2024, 00:49
Behavioral task
behavioral1
Sample
05f58231bbe33184681a2d25857d58b6_JaffaCakes118.dll
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
05f58231bbe33184681a2d25857d58b6_JaffaCakes118.dll
Resource
win10v2004-20240611-en
General
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Target
05f58231bbe33184681a2d25857d58b6_JaffaCakes118.dll
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Size
177KB
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MD5
05f58231bbe33184681a2d25857d58b6
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SHA1
7a1ff177e59d9c67a2fde93b57bedc08660ed7e3
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SHA256
d6327fea3c74a8f27ad2a24751577a50cf6954f1c44ae443d0d128a4b056cf57
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SHA512
b78ed6f810fde8ccad8887193a7b1763b2209b54db427ec181c75220262003ef56e36b89b9aa4d508fa4014a2e618e0fb0366bfc9af0826a9f50dd459dae3271
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SSDEEP
3072:kKVlgf9pnvlVmQrVM6xTr9bbrMbvT0q8O1cZPzQ7IXMBc+AMP+QfQEhxFyVU79FD:k0gf9RvlVt9dwvP6bQ7yMP+DE827XIHq
Malware Config
Signatures
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Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
description ioc Process File opened for modification \??\PhysicalDrive0 regsvr32.exe -
Modifies registry class 17 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\0\win32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{D103EBF9-6DD5-4715-863A-00AA27C7935A}\ = "loader" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\loader.DLL\AppID = "{D103EBF9-6DD5-4715-863A-00AA27C7935A}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\FLAGS\ = "0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\FLAGS regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\ = "loader 1.0 Type Library" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\05f58231bbe33184681a2d25857d58b6_JaffaCakes118.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.key regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{D103EBF9-6DD5-4715-863A-00AA27C7935A} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\loader.DLL regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\HELPDIR regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2416 wrote to memory of 2444 2416 regsvr32.exe 28 PID 2416 wrote to memory of 2444 2416 regsvr32.exe 28 PID 2416 wrote to memory of 2444 2416 regsvr32.exe 28 PID 2416 wrote to memory of 2444 2416 regsvr32.exe 28 PID 2416 wrote to memory of 2444 2416 regsvr32.exe 28 PID 2416 wrote to memory of 2444 2416 regsvr32.exe 28 PID 2416 wrote to memory of 2444 2416 regsvr32.exe 28
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\05f58231bbe33184681a2d25857d58b6_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:2416 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\05f58231bbe33184681a2d25857d58b6_JaffaCakes118.dll2⤵
- Writes to the Master Boot Record (MBR)
- Modifies registry class
PID:2444
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