e5bfea38ff89f942f47cd6c648835108c0e19006198a14e31f23acdd47f5ad30

Analysis

max time kernel
45s
max time network
50s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
06/12/2022, 16:55 UTC

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General

Target

e5bfea38ff89f942f47cd6c648835108c0e19006198a14e31f23acdd47f5ad30.dll
Size

567KB
MD5

e1464d5dc091a0cddf67b02db1283a1e
SHA1

5efc471ef3ad70b9c76ced2197f92e0ea72ca3d0
SHA256

e5bfea38ff89f942f47cd6c648835108c0e19006198a14e31f23acdd47f5ad30
SHA512

087ff11e510deb9f9f0ea283b3d009502d3be512806bf238f4de064468addb48ff07f2a47186f6244b872d6cbe3604481063acfe94676afef403267742107140
SSDEEP

12288:DGsb7ZUmkzD0bYWIVvUwVh8MtJSOuD9rbhT6i/bPH:DRRb3hgh8M2P9RTV

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\{5D3E77AF-5FCB-587A-9E8C-D23F53C3BFA8}	regsvr32.exe

Modifies registry class 11 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5D3E77AF-5FCB-587A-9E8C-D23F53C3BFA8}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\e5bfea38ff89f942f47cd6c648835108c0e19006198a14e31f23acdd47f5ad30.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\e5bfea38ff89f942f47cd6c648835108c0e19006198a14e31f23acdd47f5ad30.FacCaExlib\Clsid	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5D3E77AF-5FCB-587A-9E8C-D23F53C3BFA8}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5D3E77AF-5FCB-587A-9E8C-D23F53C3BFA8}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5D3E77AF-5FCB-587A-9E8C-D23F53C3BFA8}\ = "EvClasExyi2"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\e5bfea38ff89f942f47cd6c648835108c0e19006198a14e31f23acdd47f5ad30.FacCaExlib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\e5bfea38ff89f942f47cd6c648835108c0e19006198a14e31f23acdd47f5ad30.FacCaExlib\ = "EvClasExyi2"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\e5bfea38ff89f942f47cd6c648835108c0e19006198a14e31f23acdd47f5ad30.FacCaExlib\Clsid\ = "{5D3E77AF-5FCB-587A-9E8C-D23F53C3BFA8}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5D3E77AF-5FCB-587A-9E8C-D23F53C3BFA8}\ProgID\ = "e5bfea38ff89f942f47cd6c648835108c0e19006198a14e31f23acdd47f5ad30.FacCaExlib"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5D3E77AF-5FCB-587A-9E8C-D23F53C3BFA8}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5D3E77AF-5FCB-587A-9E8C-D23F53C3BFA8}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1600 wrote to memory of 1352	1600	regsvr32.exe	27
PID 1600 wrote to memory of 1352	1600	regsvr32.exe	27
PID 1600 wrote to memory of 1352	1600	regsvr32.exe	27
PID 1600 wrote to memory of 1352	1600	regsvr32.exe	27
PID 1600 wrote to memory of 1352	1600	regsvr32.exe	27
PID 1600 wrote to memory of 1352	1600	regsvr32.exe	27
PID 1600 wrote to memory of 1352	1600	regsvr32.exe	27

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\e5bfea38ff89f942f47cd6c648835108c0e19006198a14e31f23acdd47f5ad30.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1600
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\e5bfea38ff89f942f47cd6c648835108c0e19006198a14e31f23acdd47f5ad30.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:1352

Network

MITRE ATT&CK Enterprise v6

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/1352-56-0x00000000752B1000-0x00000000752B3000-memory.dmp

Filesize
8KB

Download
memory/1352-57-0x0000000001E10000-0x0000000001E90000-memory.dmp

Filesize
512KB

Download
memory/1600-54-0x000007FEFB781000-0x000007FEFB783000-memory.dmp

Filesize
8KB

Download