428bc46cc18ad32c1755049227e2c0acfbcfeb94ccb0a2503e5a4b737b130459

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25-12-2023 00:41

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General

Target

1da4333958e4ff0948fcc46d8d3e160f.dll
Size

216KB
MD5

1da4333958e4ff0948fcc46d8d3e160f
SHA1

ee422491eb63f24d21d716dece3d1ff508038b01
SHA256

428bc46cc18ad32c1755049227e2c0acfbcfeb94ccb0a2503e5a4b737b130459
SHA512

f22bcb09c42ece0ddd96d09c3da45794175168e4d29844c3505e27d9eac86d2e61d636b21ee39f0733bc8215fdd85c8f4c6258a5b1ba26e0bd43f7bc8e6503ec
SSDEEP

3072:IUpn4UYYlbHKc904vMS/A0ts43rWTjfxWaW8ca0n0adLkwT6gEdFSpvWcOwJB:75YYlbb087oYB3rWTjfc39TAvSpvw6

Score

8^/10

adware persistence stealer

Malware Config

Signatures

Sets file execution options in registry 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ctfmon.exe	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ctfmon.exe\Debugger = "C:\\Windows\\system32\\ctfmon_oq.exe"	regsvr32.exe

Installs/modifies Browser Helper Object 2 TTPs 3 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	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{81DE1D6C-F118-356F-A492-456652DEE05F}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{81DE1D6C-F118-356F-A492-456652DEE05F}\IExplore = "1"	regsvr32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ctfmon_oq.exe	regsvr32.exe

Modifies registry class 41 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{81DE1D6C-F118-356F-A492-456652DEE05F}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B63022C9-BAB3-3DFD-B0DF-BD1F64CFAA67}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5B625684-AB6F-3B09-AA4D-AD79ABDAA8D8}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B63022C9-BAB3-3DFD-B0DF-BD1F64CFAA67}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B63022C9-BAB3-3DFD-B0DF-BD1F64CFAA67}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5B625684-AB6F-3B09-AA4D-AD79ABDAA8D8}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5B625684-AB6F-3B09-AA4D-AD79ABDAA8D8}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{81DE1D6C-F118-356F-A492-456652DEE05F}\ProgID\ = "D.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{81DE1D6C-F118-356F-A492-456652DEE05F}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1da4333958e4ff0948fcc46d8d3e160f.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B63022C9-BAB3-3DFD-B0DF-BD1F64CFAA67}\1.0\ = "LIB"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5B625684-AB6F-3B09-AA4D-AD79ABDAA8D8}\TypeLib\ = "{B63022C9-BAB3-3DFD-B0DF-BD1F64CFAA67}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D\ = "D"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{81DE1D6C-F118-356F-A492-456652DEE05F}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5B625684-AB6F-3B09-AA4D-AD79ABDAA8D8}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{81DE1D6C-F118-356F-A492-456652DEE05F}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5B625684-AB6F-3B09-AA4D-AD79ABDAA8D8}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID\ = "{81DE1D6C-F118-356F-A492-456652DEE05F}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{81DE1D6C-F118-356F-A492-456652DEE05F}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5B625684-AB6F-3B09-AA4D-AD79ABDAA8D8}\TypeLib\ = "{B63022C9-BAB3-3DFD-B0DF-BD1F64CFAA67}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\ = "D"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID\ = "{81DE1D6C-F118-356F-A492-456652DEE05F}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5B625684-AB6F-3B09-AA4D-AD79ABDAA8D8}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5B625684-AB6F-3B09-AA4D-AD79ABDAA8D8}\ = "IDOMPeek"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5B625684-AB6F-3B09-AA4D-AD79ABDAA8D8}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{81DE1D6C-F118-356F-A492-456652DEE05F}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B63022C9-BAB3-3DFD-B0DF-BD1F64CFAA67}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B63022C9-BAB3-3DFD-B0DF-BD1F64CFAA67}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1da4333958e4ff0948fcc46d8d3e160f.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B63022C9-BAB3-3DFD-B0DF-BD1F64CFAA67}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5B625684-AB6F-3B09-AA4D-AD79ABDAA8D8}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5B625684-AB6F-3B09-AA4D-AD79ABDAA8D8}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B63022C9-BAB3-3DFD-B0DF-BD1F64CFAA67}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B63022C9-BAB3-3DFD-B0DF-BD1F64CFAA67}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B63022C9-BAB3-3DFD-B0DF-BD1F64CFAA67}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5B625684-AB6F-3B09-AA4D-AD79ABDAA8D8}\ = "IDOMPeek"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{81DE1D6C-F118-356F-A492-456652DEE05F}\ = "D"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{81DE1D6C-F118-356F-A492-456652DEE05F}\VersionIndependentProgID\ = "D"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5B625684-AB6F-3B09-AA4D-AD79ABDAA8D8}\TypeLib	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1812 wrote to memory of 2532	1812	regsvr32.exe	28
PID 1812 wrote to memory of 2532	1812	regsvr32.exe	28
PID 1812 wrote to memory of 2532	1812	regsvr32.exe	28
PID 1812 wrote to memory of 2532	1812	regsvr32.exe	28
PID 1812 wrote to memory of 2532	1812	regsvr32.exe	28
PID 1812 wrote to memory of 2532	1812	regsvr32.exe	28
PID 1812 wrote to memory of 2532	1812	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\1da4333958e4ff0948fcc46d8d3e160f.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1812
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\1da4333958e4ff0948fcc46d8d3e160f.dll
  2⤵
  - Sets file execution options in registry
  - Installs/modifies Browser Helper Object
  - Drops file in System32 directory
  - Modifies registry class
  PID:2532

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Browser Extensions

T1176

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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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