d6b9386f3961c36f5f1d3e53c76fd93d629bb4ed7353422ab828b29134aa44ec

Analysis

max time kernel
141s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
01-07-2024 08:43

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General

Target

1aa5a4b332ce13ffc2d41085f8be9397_JaffaCakes118.dll
Size

86KB
MD5

1aa5a4b332ce13ffc2d41085f8be9397
SHA1

93940845a594fe7e24dca9f8af89a3cf6879207c
SHA256

d6b9386f3961c36f5f1d3e53c76fd93d629bb4ed7353422ab828b29134aa44ec
SHA512

894a91985f8ce287555282c5c582e1594ed4b216b69df8a15e888b7cf9868f56c97f0bdf8315f6430dfc5f836b308d64970f4e32f9fac086b5cbcfbf02a51b01
SSDEEP

1536:WYvynn+A2VKzuuXRZI5jXR/Lf6eK+ndC7gyqn+9f3Hx/BQn3mGYx5ZlA:Tv4+A9zDs/9KYKgE5/BQn3XY5u

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

Processes:

resource yara_rule

behavioral2/memory/452-0-0x0000000000400000-0x000000000043C000-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

Processes:

regsvr32.exe

description ioc process

Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{B76581A4-06F5-4E73-ACD8-C7202866DF31} regsvr32.exe

resource	yara_rule
behavioral2/memory/452-0-0x0000000000400000-0x000000000043C000-memory.dmp	upx

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{B76581A4-06F5-4E73-ACD8-C7202866DF31}	regsvr32.exe

Modifies registry class 6 IoCs

Processes:

regsvr32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B76581A4-06F5-4E73-ACD8-C7202866DF31}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B76581A4-06F5-4E73-ACD8-C7202866DF31}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B76581A4-06F5-4E73-ACD8-C7202866DF31}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1aa5a4b332ce13ffc2d41085f8be9397_JaffaCakes118.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B76581A4-06F5-4E73-ACD8-C7202866DF31}\InprocServer32\ThreadingModel = "apartment"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

regsvr32.exe

description	pid	process	target process
PID 3456 wrote to memory of 452	3456	regsvr32.exe	regsvr32.exe
PID 3456 wrote to memory of 452	3456	regsvr32.exe	regsvr32.exe
PID 3456 wrote to memory of 452	3456	regsvr32.exe	regsvr32.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\1aa5a4b332ce13ffc2d41085f8be9397_JaffaCakes118.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3456

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\1aa5a4b332ce13ffc2d41085f8be9397_JaffaCakes118.dll
2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:452

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=4136 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:8
1⤵
PID:3004

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Browser Extensions

T1176

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

memory/452-0-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

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