Analysis
-
max time kernel
122s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
03-07-2024 08:34
Behavioral task
behavioral1
Sample
21b7dfd618ceedda5f3f261e00a15874_JaffaCakes118.dll
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
21b7dfd618ceedda5f3f261e00a15874_JaffaCakes118.dll
Resource
win10v2004-20240611-en
General
-
Target
21b7dfd618ceedda5f3f261e00a15874_JaffaCakes118.dll
-
Size
184KB
-
MD5
21b7dfd618ceedda5f3f261e00a15874
-
SHA1
85f59d993eeb7302f6d7f6ad05a887cd5a06588a
-
SHA256
727bf8ed4a99bf80775d70308684bf539053894571f8ff274fb94227e28115b8
-
SHA512
e3ed337f1479f5d0b00a510c4061f60c530c55600d9bd0e624e19135fe1c618de79bd7c38a973e60f2403b8cb0e63b79aa9b9e9bd9bf6ec014399c55a8137077
-
SSDEEP
3072:ky9N/aaNM9aHDMzMhlrapiEK0bbrMbvT0q8O1cZPzQ7IXMBc+AMP+QfQEhxFyVU+:kmjK9CDMzMAiEvwvP6bQ7yMP+DE827cf
Malware Config
Signatures
-
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\.key 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\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\FLAGS\ = "0" 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\\21b7dfd618ceedda5f3f261e00a15874_JaffaCakes118.dll" 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 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 Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ 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 Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\HELPDIR regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\ = "loader 1.0 Type Library" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\0 regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 1660 wrote to memory of 1020 1660 regsvr32.exe 28 PID 1660 wrote to memory of 1020 1660 regsvr32.exe 28 PID 1660 wrote to memory of 1020 1660 regsvr32.exe 28 PID 1660 wrote to memory of 1020 1660 regsvr32.exe 28 PID 1660 wrote to memory of 1020 1660 regsvr32.exe 28 PID 1660 wrote to memory of 1020 1660 regsvr32.exe 28 PID 1660 wrote to memory of 1020 1660 regsvr32.exe 28
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\21b7dfd618ceedda5f3f261e00a15874_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1660 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\21b7dfd618ceedda5f3f261e00a15874_JaffaCakes118.dll2⤵
- Writes to the Master Boot Record (MBR)
- Modifies registry class
PID:1020
-