fcc119159af805c51ce832e045467b9997058f35d201ed0db64ef118ec007430

Analysis

max time kernel
122s
max time network
125s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
06-03-2024 03:04

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General

Target

b65832671d39ff4dffd80c687dfd8c1b.dll
Size

640KB
MD5

b65832671d39ff4dffd80c687dfd8c1b
SHA1

9855b8c8e3ad3579d45658cc89fd7b5df02184aa
SHA256

fcc119159af805c51ce832e045467b9997058f35d201ed0db64ef118ec007430
SHA512

f5a61362c3297fe294833a5f158c1c83166e98c1d916953d89bc024d6e830ae751fa95589cf4f5fcaca1b2a4ed81b5175a4b14aab08b2a0f8e62bf23abc8e20b
SSDEEP

12288:okdtYzsZDM2fjYiV/UzxoyS7nUmsn7lJnsdh+xM2tePm:JdGzs/0kwolUf7l9Mh+SA+

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-CDC5-6B29-ABB9-FFE6FB7687B2}	regsvr32.exe

Modifies registry class 11 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-CDC5-6B29-ABB9-FFE6FB7687B2}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-CDC5-6B29-ABB9-FFE6FB7687B2}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b65832671d39ff4dffd80c687dfd8c1b.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\b65832671d39ff4dffd80c687dfd8c1b.brm inc\ = "brm inc"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\b65832671d39ff4dffd80c687dfd8c1b.brm inc\Clsid\ = "{CC01FC6C-CDC5-6B29-ABB9-FFE6FB7687B2}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-CDC5-6B29-ABB9-FFE6FB7687B2}\ProgID\ = "b65832671d39ff4dffd80c687dfd8c1b.brm inc"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-CDC5-6B29-ABB9-FFE6FB7687B2}\ = "brm inc"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-CDC5-6B29-ABB9-FFE6FB7687B2}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-CDC5-6B29-ABB9-FFE6FB7687B2}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\b65832671d39ff4dffd80c687dfd8c1b.brm inc	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\b65832671d39ff4dffd80c687dfd8c1b.brm inc\Clsid	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-CDC5-6B29-ABB9-FFE6FB7687B2}\ProgID	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 2716	2516	regsvr32.exe	28
PID 2516 wrote to memory of 2716	2516	regsvr32.exe	28
PID 2516 wrote to memory of 2716	2516	regsvr32.exe	28
PID 2516 wrote to memory of 2716	2516	regsvr32.exe	28
PID 2516 wrote to memory of 2716	2516	regsvr32.exe	28
PID 2516 wrote to memory of 2716	2516	regsvr32.exe	28
PID 2516 wrote to memory of 2716	2516	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\b65832671d39ff4dffd80c687dfd8c1b.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\b65832671d39ff4dffd80c687dfd8c1b.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:2716

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

Replay Monitor

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Downloads

memory/2716-0-0x0000000000AA0000-0x0000000000B44000-memory.dmp

Filesize
656KB

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