651c0833c4c50d2bc8888c25ad24894520062819ab8a97f74a1f4496e5832da5

Analysis

max time kernel
143s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
05/02/2024, 09:42

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General

Target
91a8e8b2d46fb24b44564101e5a9de5c.dll
Size 280KB
Sample240205-lpp5tscgh9
SHA256 651c0833c4c50d2bc8888c25ad24894520062819ab8a97f74a1f4496e5832da5
MD5 91a8e8b2d46fb24b44564101e5a9de5c
SHA1 7331e55bbad389dffe9e23ecc87825c074788dbe
SHA512 080190d5ab86fa7b70ca6dce183a6d590809814c51ec0be0be4255a00ceb9e45249ea12e5a2b41ca30ff4c2b152b741292c94ac81f0aa89db76a4771a1519723
SSDEEP 6144:4/DDuotfYVk/a+blnuLa8GVSIT+clLoG7U4iGga347IUswcQjBVGtlMuT:cDDuUgk/aCOa8NIT+clLoG44iG87zcQV
MD5 SHA1 SHA512 SSDEEP

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\{4DAE9566-953C-4DF1-8E9C-55B7890A3AE8}	regsvr32.exe

Modifies registry class 11 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4DAE9566-953C-4DF1-8E9C-55B7890A3AE8}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\91a8e8b2d46fb24b44564101e5a9de5c.QExpTuoll	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\91a8e8b2d46fb24b44564101e5a9de5c.QExpTuoll\Clsid	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4DAE9566-953C-4DF1-8E9C-55B7890A3AE8}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4DAE9566-953C-4DF1-8E9C-55B7890A3AE8}\ProgID\ = "91a8e8b2d46fb24b44564101e5a9de5c.QExpTuoll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4DAE9566-953C-4DF1-8E9C-55B7890A3AE8}\ = "Explore.Tuoll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4DAE9566-953C-4DF1-8E9C-55B7890A3AE8}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4DAE9566-953C-4DF1-8E9C-55B7890A3AE8}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\91a8e8b2d46fb24b44564101e5a9de5c.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4DAE9566-953C-4DF1-8E9C-55B7890A3AE8}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\91a8e8b2d46fb24b44564101e5a9de5c.QExpTuoll\ = "Explore.Tuoll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\91a8e8b2d46fb24b44564101e5a9de5c.QExpTuoll\Clsid\ = "{4DAE9566-953C-4DF1-8E9C-55B7890A3AE8}"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4080 wrote to memory of 4748	4080	regsvr32.exe	83
PID 4080 wrote to memory of 4748	4080	regsvr32.exe	83
PID 4080 wrote to memory of 4748	4080	regsvr32.exe	83

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\91a8e8b2d46fb24b44564101e5a9de5c.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4080
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\91a8e8b2d46fb24b44564101e5a9de5c.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:4748

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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