9f8d03a2ccdc81434c79fb8d7c6f14b938f52f3615fe57186fa25f00caf3510a

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
24/12/2023, 15:00

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General

Target

02aa4eb8e81da22edf9ea2ba7d1dd8e7.dll
Size

248KB
MD5

02aa4eb8e81da22edf9ea2ba7d1dd8e7
SHA1

6933a2cdec56e4043d30c26e84a4bac54cc0101a
SHA256

9f8d03a2ccdc81434c79fb8d7c6f14b938f52f3615fe57186fa25f00caf3510a
SHA512

2ea635abb4a7833b3e8827309e736c5b7e53cd30146b4077bcdcf874c0bcb8e8062eb9237e84ef9bcf6bef9916ddfb5b257d56d192e1b6ae0118147036875a41
SSDEEP

6144:bXfSbVUJVWEuXYoojsadOGiteP7HSQ3lugKC:z6ZmWEuXYoojGGiq7HSVgr

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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ctfmon.exe\Debugger = "C:\\Windows\\system32\\ctfmonfbg.exe"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ctfmon.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\{E83810F1-7F19-34A0-96D4-AC655848B545}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{E83810F1-7F19-34A0-96D4-AC655848B545}\IExplore = "1"	regsvr32.exe

Drops file in System32 directory 1 IoCs

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

Modifies registry class 41 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID\ = "{E83810F1-7F19-34A0-96D4-AC655848B545}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1A08CD9D-FD9B-3C51-96E3-5E3781248C5A}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1A08CD9D-FD9B-3C51-96E3-5E3781248C5A}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CDCD9B70-80DA-31EC-BF00-17E748EB1415}\ = "IDOMPeek"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CDCD9B70-80DA-31EC-BF00-17E748EB1415}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E83810F1-7F19-34A0-96D4-AC655848B545}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1A08CD9D-FD9B-3C51-96E3-5E3781248C5A}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CDCD9B70-80DA-31EC-BF00-17E748EB1415}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E83810F1-7F19-34A0-96D4-AC655848B545}\ProgID\ = "D.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E83810F1-7F19-34A0-96D4-AC655848B545}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1A08CD9D-FD9B-3C51-96E3-5E3781248C5A}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{CDCD9B70-80DA-31EC-BF00-17E748EB1415}\ = "IDOMPeek"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{CDCD9B70-80DA-31EC-BF00-17E748EB1415}\TypeLib\ = "{1A08CD9D-FD9B-3C51-96E3-5E3781248C5A}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CDCD9B70-80DA-31EC-BF00-17E748EB1415}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D\ = "D"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E83810F1-7F19-34A0-96D4-AC655848B545}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1A08CD9D-FD9B-3C51-96E3-5E3781248C5A}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{CDCD9B70-80DA-31EC-BF00-17E748EB1415}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CDCD9B70-80DA-31EC-BF00-17E748EB1415}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID\ = "{E83810F1-7F19-34A0-96D4-AC655848B545}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E83810F1-7F19-34A0-96D4-AC655848B545}\ = "D"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1A08CD9D-FD9B-3C51-96E3-5E3781248C5A}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{CDCD9B70-80DA-31EC-BF00-17E748EB1415}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CDCD9B70-80DA-31EC-BF00-17E748EB1415}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E83810F1-7F19-34A0-96D4-AC655848B545}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E83810F1-7F19-34A0-96D4-AC655848B545}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1A08CD9D-FD9B-3C51-96E3-5E3781248C5A}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1A08CD9D-FD9B-3C51-96E3-5E3781248C5A}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\02aa4eb8e81da22edf9ea2ba7d1dd8e7.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\ = "D"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E83810F1-7F19-34A0-96D4-AC655848B545}\VersionIndependentProgID\ = "D"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{CDCD9B70-80DA-31EC-BF00-17E748EB1415}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CDCD9B70-80DA-31EC-BF00-17E748EB1415}\TypeLib\ = "{1A08CD9D-FD9B-3C51-96E3-5E3781248C5A}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E83810F1-7F19-34A0-96D4-AC655848B545}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\02aa4eb8e81da22edf9ea2ba7d1dd8e7.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1A08CD9D-FD9B-3C51-96E3-5E3781248C5A}\1.0\ = "LIB"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1A08CD9D-FD9B-3C51-96E3-5E3781248C5A}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{CDCD9B70-80DA-31EC-BF00-17E748EB1415}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{CDCD9B70-80DA-31EC-BF00-17E748EB1415}\TypeLib\Version = "1.0"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1532 wrote to memory of 5072	1532	regsvr32.exe	15
PID 1532 wrote to memory of 5072	1532	regsvr32.exe	15
PID 1532 wrote to memory of 5072	1532	regsvr32.exe	15

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\02aa4eb8e81da22edf9ea2ba7d1dd8e7.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1532
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\02aa4eb8e81da22edf9ea2ba7d1dd8e7.dll
  2⤵
  - Sets file execution options in registry
  - Installs/modifies Browser Helper Object
  - Drops file in System32 directory
  - Modifies registry class
  PID:5072

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

Windows 7 deprecation

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads