221231cde46423cf9a5b77c4bcb848be3fe156f93a51316f10203fb65bc1558e

Analysis

max time kernel
142s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2024, 00:22

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General

Target
8ae9cd79565e0d60a164ab7346e921f7.dll
Size 345KB
Sample240203-an8d8scef4
SHA256 221231cde46423cf9a5b77c4bcb848be3fe156f93a51316f10203fb65bc1558e
MD5 8ae9cd79565e0d60a164ab7346e921f7
SHA1 e016760fda07562e7e6805da5384fe6b58513d83
SHA512 2c7a32fc11fcb72db68301080dd3e6a0a3830bd9e45c4da1884ab59d5f4d0ee9c8310e0a717c40d21326c83554c2c1bfed3fea001b8fc0c6f41fcff1bc3bbc12
SSDEEP 6144:UVkkFJbluR2y3e/EUrjitTSsj26Pz26Lzb8fr00gOeFdifXkJXL43uwXhRYiRXFm:U3vblEuMUfitTSsj2w26Lkj0yeFdIUJH
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

adware stealer upx

Malware Config

Signatures

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2728-0-0x0000000000400000-0x00000000004E0000-memory.dmp	upx

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\{903010D9-65BE-4503-81F4-3EB5FDCB9FAA}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{903010D9-65BE-4503-81F4-3EB5FDCB9FAA}\NoExplorer = "1"	regsvr32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{903010D9-65BE-4503-81F4-3EB5FDCB9FAA}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{903010D9-65BE-4503-81F4-3EB5FDCB9FAA}\ = "widelink"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{903010D9-65BE-4503-81F4-3EB5FDCB9FAA}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{903010D9-65BE-4503-81F4-3EB5FDCB9FAA}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\8ae9cd79565e0d60a164ab7346e921f7.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{903010D9-65BE-4503-81F4-3EB5FDCB9FAA}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3592 wrote to memory of 2728	3592	regsvr32.exe	83
PID 3592 wrote to memory of 2728	3592	regsvr32.exe	83
PID 3592 wrote to memory of 2728	3592	regsvr32.exe	83

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\8ae9cd79565e0d60a164ab7346e921f7.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3592
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\8ae9cd79565e0d60a164ab7346e921f7.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:2728

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

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Downloads

memory/2728-0-0x0000000000400000-0x00000000004E0000-memory.dmp

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