Analysis
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max time kernel
143s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
15-04-2024 16:35
Static task
static1
Behavioral task
behavioral1
Sample
f17ff9608a0dad9bf419eafe1e8def3f_JaffaCakes118.dll
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
f17ff9608a0dad9bf419eafe1e8def3f_JaffaCakes118.dll
Resource
win10v2004-20240226-en
General
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Target
f17ff9608a0dad9bf419eafe1e8def3f_JaffaCakes118.dll
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Size
164KB
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MD5
f17ff9608a0dad9bf419eafe1e8def3f
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SHA1
b42d4762eda56b0b4f1102362c77189d535a7d6b
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SHA256
a7a09f3a2c96aa2fd5e0dca7114ee501e539b34839cc37688fef9e4010184693
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SHA512
bd80c133002bc2a2e6dee4787e069417d9b95a202d2be2e2a1934f826a225011fdfb68485d64984e00bc727ca74e99627ebbf204420e8924e95c75d374e2c821
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SSDEEP
3072:7hLiLOigQV9U2Kfjy62NDpVcN1cnurjXuNW0KL3yQv5lz:VLeOQP3Kfcp4cMjXuNkLL
Malware Config
Signatures
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\yixnpurzrzpm = "C:\\Windows\\System32\\Rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\f17ff9608a0dad9bf419eafe1e8def3f_JaffaCakes118.dll\" EntryPoint" 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 Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{9bbcb286-402f-5820-e643-e3181efe0ba6}\NoExplorer = "\"\"" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{9bbcb286-402f-5820-e643-e3181efe0ba6} regsvr32.exe -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9bbcb286-402f-5820-e643-e3181efe0ba6}\InProcServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9bbcb286-402f-5820-e643-e3181efe0ba6}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f17ff9608a0dad9bf419eafe1e8def3f_JaffaCakes118.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9bbcb286-402f-5820-e643-e3181efe0ba6}\InProcServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9bbcb286-402f-5820-e643-e3181efe0ba6} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9bbcb286-402f-5820-e643-e3181efe0ba6}\ = "rightonadz browser enhancer" regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4832 wrote to memory of 1300 4832 regsvr32.exe 93 PID 4832 wrote to memory of 1300 4832 regsvr32.exe 93 PID 4832 wrote to memory of 1300 4832 regsvr32.exe 93
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\f17ff9608a0dad9bf419eafe1e8def3f_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:4832 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\f17ff9608a0dad9bf419eafe1e8def3f_JaffaCakes118.dll2⤵
- Adds Run key to start application
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:1300
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4036 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:81⤵PID:1944