Analysis
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max time kernel
121s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
22-06-2024 23:36
Behavioral task
behavioral1
Sample
04672281e494a1bc68183dabf51d1dcf_JaffaCakes118.dll
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
04672281e494a1bc68183dabf51d1dcf_JaffaCakes118.dll
Resource
win10v2004-20240611-en
General
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Target
04672281e494a1bc68183dabf51d1dcf_JaffaCakes118.dll
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Size
181KB
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MD5
04672281e494a1bc68183dabf51d1dcf
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SHA1
466132bd929f03d1779ba5f6f3d64239e0cad98e
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SHA256
c1be07d8369d48cb72afc67b6768a6c3dca24326033a318c496d6c79508ab05f
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SHA512
3a0d1782109a3cdee7001238a28bf70dd114eefc63e363c95f07d5c634e44dbd05125585f80668f918694785c3928f51941cd6614b75a645f44089fb78fb47d1
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SSDEEP
3072:zkX1Ml904wtjvAnIPcl1g+vp33kDbbrMbvT0q8O1cZPzQ7IXMBc+AMP+QfQEhxFa:z61A90DVvA3yLwvP6bQ7yMP+DE827EF/
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 Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\loader.DLL regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.key 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\HELPDIR 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\AppID\{D103EBF9-6DD5-4715-863A-00AA27C7935A}\ = "loader" regsvr32.exe 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\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\04672281e494a1bc68183dabf51d1dcf_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 Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\loader.DLL\AppID = "{D103EBF9-6DD5-4715-863A-00AA27C7935A}" 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 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\FLAGS regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{D103EBF9-6DD5-4715-863A-00AA27C7935A} regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 308 wrote to memory of 2140 308 regsvr32.exe 28 PID 308 wrote to memory of 2140 308 regsvr32.exe 28 PID 308 wrote to memory of 2140 308 regsvr32.exe 28 PID 308 wrote to memory of 2140 308 regsvr32.exe 28 PID 308 wrote to memory of 2140 308 regsvr32.exe 28 PID 308 wrote to memory of 2140 308 regsvr32.exe 28 PID 308 wrote to memory of 2140 308 regsvr32.exe 28
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\04672281e494a1bc68183dabf51d1dcf_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:308 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\04672281e494a1bc68183dabf51d1dcf_JaffaCakes118.dll2⤵
- Writes to the Master Boot Record (MBR)
- Modifies registry class
PID:2140
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