f07cfd6befeff9ba1e74ab66896cb288a5e1eb1fe77a59c08343d8a010d68303

Analysis

max time kernel
117s
max time network
117s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
21/06/2024, 13:13

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General

Target
findcheckb.dll
Size 810KB
Sample240621-qf3rsa1dkd
SHA256 fac1d0c80f11d2f9a7a1382a42a2defe163ea86a77953aeaead465a79996fcd5
MD5 df3c24d64838088bf4ae0c61d88c4e73
SHA1 4bc130b6a5f775e4d34f4156415bb469e87c45e7
SHA512 2d789c5e9018ff66de8ca8757383a78eddd6c2bff6c1bbb861e76565b664b00b97cf2a982aeeee91ce6f383e3b86389965fd276943bb7a7ea6bd8b4fecea4a8e
SSDEEP 12288:5Nrmo6MSYmAHhSdv645XqqgFILs1/tZYA/vl5dtQZLQ92BiCF2:3ajYlItJv3s1/7lt6ZEojF2
MD5 SHA1 SHA512 SSDEEP

Score

6^/10

adware stealer

Malware Config

Signatures

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\{C54E3AF7-65EA-4680-9C31-737509C4F835}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{C54E3AF7-65EA-4680-9C31-737509C4F835}\NoExplorer = "1"	regsvr32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C54E3AF7-65EA-4680-9C31-737509C4F835}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\findcheckb.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C54E3AF7-65EA-4680-9C31-737509C4F835}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C54E3AF7-65EA-4680-9C31-737509C4F835}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C54E3AF7-65EA-4680-9C31-737509C4F835}\ = "findcheck"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C54E3AF7-65EA-4680-9C31-737509C4F835}\InprocServer32	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 948 wrote to memory of 2180	948	regsvr32.exe	28
PID 948 wrote to memory of 2180	948	regsvr32.exe	28
PID 948 wrote to memory of 2180	948	regsvr32.exe	28
PID 948 wrote to memory of 2180	948	regsvr32.exe	28
PID 948 wrote to memory of 2180	948	regsvr32.exe	28
PID 948 wrote to memory of 2180	948	regsvr32.exe	28
PID 948 wrote to memory of 2180	948	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\findcheckb.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:948
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\findcheckb.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:2180

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/2180-0-0x0000000000D00000-0x0000000000DD0000-memory.dmp

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