Analysis
-
max time kernel
93s -
max time network
123s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
15-04-2024 13:56
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
f1389c766c2d12ecec5cf72ddfb03983_JaffaCakes118.dll
Resource
win7-20240221-en
3 signatures
150 seconds
General
-
Target
f1389c766c2d12ecec5cf72ddfb03983_JaffaCakes118.dll
-
Size
640KB
-
MD5
f1389c766c2d12ecec5cf72ddfb03983
-
SHA1
cd0cca55c60a94a6364ff6ff94638e28f4a26b12
-
SHA256
33eb9952b740e5f98f8d237b2100d73ca1dfd4d8eb3bb71dd14a35a16e121957
-
SHA512
cb43ab0d9f85e6a7623e22fa41b98ceefd93ef24f5c0c591b8bfc70c23e63716efbfc5bcc56867ea584e2e789ec898de435e790a4418238336a6618cbdbd434a
-
SSDEEP
12288:nkdtYzsZDM2fjYiV/UzxoyS7nUmsn7lvivQh+K2tePm:kdGzs/0kwolUf7laYh+KA+
Malware Config
Signatures
-
Installs/modifies Browser Helper Object 2 TTPs 1 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\{CC01FC6C-D49B-86E1-DA3E-B73AF91D829C} regsvr32.exe -
Modifies registry class 11 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-D49B-86E1-DA3E-B73AF91D829C}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-D49B-86E1-DA3E-B73AF91D829C}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\f1389c766c2d12ecec5cf72ddfb03983_JaffaCakes118.brm inc regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\f1389c766c2d12ecec5cf72ddfb03983_JaffaCakes118.brm inc\ = "brm inc" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\f1389c766c2d12ecec5cf72ddfb03983_JaffaCakes118.brm inc\Clsid regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\f1389c766c2d12ecec5cf72ddfb03983_JaffaCakes118.brm inc\Clsid\ = "{CC01FC6C-D49B-86E1-DA3E-B73AF91D829C}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-D49B-86E1-DA3E-B73AF91D829C}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-D49B-86E1-DA3E-B73AF91D829C}\ = "brm inc" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-D49B-86E1-DA3E-B73AF91D829C}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f1389c766c2d12ecec5cf72ddfb03983_JaffaCakes118.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-D49B-86E1-DA3E-B73AF91D829C}\ProgID\ = "f1389c766c2d12ecec5cf72ddfb03983_JaffaCakes118.brm inc" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-D49B-86E1-DA3E-B73AF91D829C} regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3416 wrote to memory of 4148 3416 regsvr32.exe 87 PID 3416 wrote to memory of 4148 3416 regsvr32.exe 87 PID 3416 wrote to memory of 4148 3416 regsvr32.exe 87
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\f1389c766c2d12ecec5cf72ddfb03983_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:3416 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\f1389c766c2d12ecec5cf72ddfb03983_JaffaCakes118.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:4148
-