73aeadadd9d51ea6e6dd7c97fded151b55f44a84298c73dd6391b13ae784a724

Analysis

max time kernel
120s
max time network
115s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
25/12/2023, 14:27

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

258e826eb3f4d85ba43291f7b25e8f39.dll
Size

590KB
MD5

258e826eb3f4d85ba43291f7b25e8f39
SHA1

75d01009eb89dfc7fc92d6398cb66de59c3e5a9c
SHA256

73aeadadd9d51ea6e6dd7c97fded151b55f44a84298c73dd6391b13ae784a724
SHA512

6c00e7ae60ef6845f7a2b136eaba8d9441d02014239db50ac5ff9d34ed80cca4dc6bb1a78b08471ebca7c362a366e2be9640ba61312be476d55068306131b502
SSDEEP

12288:Ds+0UWObHRykUOyDyO1E41o7plqAXMGl9/XxOb+QsGNsgH:Dn0pO7w97DbOxXMg/XxOb+Qbsg

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-772C-2B71-F6BF-2581AB8D1185}	regsvr32.exe

Modifies registry class 11 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-772C-2B71-F6BF-2581AB8D1185}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\258e826eb3f4d85ba43291f7b25e8f39.brm inc\ = "brm inc"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\258e826eb3f4d85ba43291f7b25e8f39.brm inc\Clsid	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\258e826eb3f4d85ba43291f7b25e8f39.brm inc\Clsid\ = "{CC01FC6C-772C-2B71-F6BF-2581AB8D1185}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-772C-2B71-F6BF-2581AB8D1185}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-772C-2B71-F6BF-2581AB8D1185}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-772C-2B71-F6BF-2581AB8D1185}\ = "brm inc"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-772C-2B71-F6BF-2581AB8D1185}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-772C-2B71-F6BF-2581AB8D1185}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\258e826eb3f4d85ba43291f7b25e8f39.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\258e826eb3f4d85ba43291f7b25e8f39.brm inc	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-772C-2B71-F6BF-2581AB8D1185}\ProgID\ = "258e826eb3f4d85ba43291f7b25e8f39.brm inc"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2952 wrote to memory of 1980	2952	regsvr32.exe	19
PID 2952 wrote to memory of 1980	2952	regsvr32.exe	19
PID 2952 wrote to memory of 1980	2952	regsvr32.exe	19

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\258e826eb3f4d85ba43291f7b25e8f39.dll
1⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:1980

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\258e826eb3f4d85ba43291f7b25e8f39.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2952

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

Loading Replay Monitor...