2f4fcd580f04807f569e848142ff4440b96a8caf92ef21b1265e890af96f320f

Analysis

max time kernel
145s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/01/2024, 03:08

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General

Target

3fbc6212a56dab8f4ad762b3847f6f94.dll
Size

640KB
MD5

3fbc6212a56dab8f4ad762b3847f6f94
SHA1

307a066512abbd020bb6058218b3b87103f53fac
SHA256

2f4fcd580f04807f569e848142ff4440b96a8caf92ef21b1265e890af96f320f
SHA512

edba39403d0a54dab73a26a47433a7150ed4664905d78d8b2a73a4625128740c5b57153a83631f44b558eca1887acedd9e6525e5ad7ce6c3acc32e4dcb7e57dc
SSDEEP

12288:XkdtYzsZDM2fjYiV/UzxoyS7nUmsn7lFkAdQh+o2tePm:UdGzs/0kwolUf7laAqh+oA+

Score

6^/10

adware stealer

Malware Config

Signatures

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\{CC01FC6C-C8FC-3657-1C62-F96E22197E84}	regsvr32.exe

Modifies registry class 11 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-C8FC-3657-1C62-F96E22197E84}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-C8FC-3657-1C62-F96E22197E84}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-C8FC-3657-1C62-F96E22197E84}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-C8FC-3657-1C62-F96E22197E84}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\3fbc6212a56dab8f4ad762b3847f6f94.brm inc	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\3fbc6212a56dab8f4ad762b3847f6f94.brm inc\Clsid	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\3fbc6212a56dab8f4ad762b3847f6f94.brm inc\Clsid\ = "{CC01FC6C-C8FC-3657-1C62-F96E22197E84}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-C8FC-3657-1C62-F96E22197E84}\ = "brm inc"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-C8FC-3657-1C62-F96E22197E84}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\3fbc6212a56dab8f4ad762b3847f6f94.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\3fbc6212a56dab8f4ad762b3847f6f94.brm inc\ = "brm inc"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-C8FC-3657-1C62-F96E22197E84}\ProgID\ = "3fbc6212a56dab8f4ad762b3847f6f94.brm inc"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3904 wrote to memory of 2212	3904	regsvr32.exe	89
PID 3904 wrote to memory of 2212	3904	regsvr32.exe	89
PID 3904 wrote to memory of 2212	3904	regsvr32.exe	89

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\3fbc6212a56dab8f4ad762b3847f6f94.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3904
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\3fbc6212a56dab8f4ad762b3847f6f94.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:2212

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

Windows 7 deprecation

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