cf523e7fdf7ede7a2fb025f5cd9310d6a9416eaa519506eca2f831af5411e907

Analysis

max time kernel
96s
max time network
108s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09/09/2024, 15:44

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General

Target

cfbf4dde5122b09c705a04ec1513fbe0N.dll
Size

1.6MB
MD5

cfbf4dde5122b09c705a04ec1513fbe0
SHA1

36dce3a9a4865d0c068cd8f0cbd62d0d298e22f2
SHA256

cf523e7fdf7ede7a2fb025f5cd9310d6a9416eaa519506eca2f831af5411e907
SHA512

11a6852aa2365c2d5a997589adb9a08406eb1ecff4b570886c138ea74b3fa71f1544737018357ea202edc1eb9152f5e6fb3d92a4a3403ecf52148176934e3b23
SSDEEP

24576:o22iw9ExmvSsEvNNmsOUkGHrb3UyzBEQXLn6ea+ewtwma25Xw0hZjjmp4vmExSt0:AAUGHZECejUha42M6TEbpQBx

Score

6^/10

adware discovery stealer

Malware Config

Signatures

Installs/modifies Browser Helper Object 2 TTPs 2 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\{d613badf-b8b1-71f7-7f6e-89b6f88188a0}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{d613badf-b8b1-71f7-7f6e-89b6f88188a0}\NoExplorer = "0"	regsvr32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{d613badf-b8b1-71f7-7f6e-89b6f88188a0}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\cfbf4dde5122b09c705a04ec1513fbe0N.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{d613badf-b8b1-71f7-7f6e-89b6f88188a0}\InProcServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{d613badf-b8b1-71f7-7f6e-89b6f88188a0}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{d613badf-b8b1-71f7-7f6e-89b6f88188a0}\ = "flvnetwork"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{d613badf-b8b1-71f7-7f6e-89b6f88188a0}\InProcServer32	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4688 wrote to memory of 2884	4688	regsvr32.exe	83
PID 4688 wrote to memory of 2884	4688	regsvr32.exe	83
PID 4688 wrote to memory of 2884	4688	regsvr32.exe	83

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\cfbf4dde5122b09c705a04ec1513fbe0N.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4688
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\cfbf4dde5122b09c705a04ec1513fbe0N.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:2884

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Windows 7 deprecation

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