a3be77c62917711c4c6baf967854647790bc18cba15c9cd17ac6abbc4c61a740

Analysis

max time kernel
125s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
16/04/2024, 00:27

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General

Target
f24500c0c2ac71b468a62ea51c2c6227_JaffaCakes118.dll
Size 347KB
Sample240416-arxrxacd62
SHA256 a3be77c62917711c4c6baf967854647790bc18cba15c9cd17ac6abbc4c61a740
MD5 f24500c0c2ac71b468a62ea51c2c6227
SHA1 28c19814365bf355e4838c91147f8bbe6e17b1e3
SHA512 614ae0aa6d34d51dab18bef57276865d243b30227379dfa112a942639946a978c48e78a92d24e3cc153920da762f935a3ba5fd4268cb8621c6047704d76b6efd
SSDEEP 6144:Kq0pa0r5FILbOA3RY+07FQeoJJ5quru6DancGfHP9/eEbL5T/L3kea3qOBoDf:Kq0/FC3RY+07FQHJ5quruaanccVb/5Lh
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

adware stealer upx

Malware Config

Signatures

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3240-0-0x000000003BAF0000-0x000000003BC08000-memory.dmp	upx

Installs/modifies Browser Helper Object 2 TTPs 1 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{921F7C9E-E24A-4A9A-847C-1708FBE274E7}	regsvr32.exe

Modifies registry class 11 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{921F7C9E-E24A-4A9A-847C-1708FBE274E7}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{921F7C9E-E24A-4A9A-847C-1708FBE274E7}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f24500c0c2ac71b468a62ea51c2c6227_JaffaCakes118.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\f24500c0c2ac71b468a62ea51c2c6227_JaffaCakes118.JavaPortableMix.config\Clsid	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{921F7C9E-E24A-4A9A-847C-1708FBE274E7}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{921F7C9E-E24A-4A9A-847C-1708FBE274E7}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{921F7C9E-E24A-4A9A-847C-1708FBE274E7}\ = "JavaPortableMix.config"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{921F7C9E-E24A-4A9A-847C-1708FBE274E7}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\f24500c0c2ac71b468a62ea51c2c6227_JaffaCakes118.JavaPortableMix.config	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\f24500c0c2ac71b468a62ea51c2c6227_JaffaCakes118.JavaPortableMix.config\ = "JavaPortableMix.config"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\f24500c0c2ac71b468a62ea51c2c6227_JaffaCakes118.JavaPortableMix.config\Clsid\ = "{921F7C9E-E24A-4A9A-847C-1708FBE274E7}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{921F7C9E-E24A-4A9A-847C-1708FBE274E7}\ProgID\ = "f24500c0c2ac71b468a62ea51c2c6227_JaffaCakes118.JavaPortableMix.config"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 776 wrote to memory of 3240	776	regsvr32.exe	89
PID 776 wrote to memory of 3240	776	regsvr32.exe	89
PID 776 wrote to memory of 3240	776	regsvr32.exe	89

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f24500c0c2ac71b468a62ea51c2c6227_JaffaCakes118.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:776
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\f24500c0c2ac71b468a62ea51c2c6227_JaffaCakes118.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:3240

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 --field-trial-handle=5256,i,17229298512878960157,13441031190071685883,262144 --variations-seed-version --mojo-platform-channel-handle=4292 /prefetch:8
1⤵
PID:2336

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Browser Extensions

T1176

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3240-0-0x000000003BAF0000-0x000000003BC08000-memory.dmp

Download

memory/3240-1-0x0000000002810000-0x0000000002811000-memory.dmp