52f6b0377503192d6509e3a560453e16c0128594c1be5503836e1bc58c7913fe

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
05/01/2024, 23:00

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General

Target

44a68340ef53f83e8fb0ffc33ab7e115.dll
Size

240KB
MD5

44a68340ef53f83e8fb0ffc33ab7e115
SHA1

c0ec550b3ed6aafc362fe552896a3e9dc4f81b04
SHA256

52f6b0377503192d6509e3a560453e16c0128594c1be5503836e1bc58c7913fe
SHA512

64088819d94e0d8245fd4a16a2104898e254204fa23797b0b133c1b3e6a13c7b1d262ba0a7710535573a2eddd2966b10ff8e761ecd143820387a221c7c0ab130
SSDEEP

6144:8sDa28YfH/svNusBSPlEdkx2MP5UTvuZ1C:8mOY//QNvBlkxp5na

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\\ctfmonzyp.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\{EAC1B500-7864-3DA6-99F0-35361D557923}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{EAC1B500-7864-3DA6-99F0-35361D557923}\IExplore = "1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects	regsvr32.exe

Drops file in System32 directory 1 IoCs

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

Modifies registry class 41 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\ = "IDOMPeek"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D\ = "D"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\ = "D"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID\ = "{EAC1B500-7864-3DA6-99F0-35361D557923}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EAC1B500-7864-3DA6-99F0-35361D557923}\ = "D"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EAC1B500-7864-3DA6-99F0-35361D557923}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EAC1B500-7864-3DA6-99F0-35361D557923}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\44a68340ef53f83e8fb0ffc33ab7e115.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EAC1B500-7864-3DA6-99F0-35361D557923}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EAC1B500-7864-3DA6-99F0-35361D557923}\ProgID\ = "D.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EAC1B500-7864-3DA6-99F0-35361D557923}\VersionIndependentProgID\ = "D"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EAC1B500-7864-3DA6-99F0-35361D557923}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\TypeLib\ = "{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EAC1B500-7864-3DA6-99F0-35361D557923}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID\ = "{EAC1B500-7864-3DA6-99F0-35361D557923}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EAC1B500-7864-3DA6-99F0-35361D557923}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\44a68340ef53f83e8fb0ffc33ab7e115.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\TypeLib\ = "{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\ = "IDOMPeek"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}\1.0\ = "LIB"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}\1.0\FLAGS	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2188 wrote to memory of 2876	2188	regsvr32.exe	17
PID 2188 wrote to memory of 2876	2188	regsvr32.exe	17
PID 2188 wrote to memory of 2876	2188	regsvr32.exe	17
PID 2188 wrote to memory of 2876	2188	regsvr32.exe	17
PID 2188 wrote to memory of 2876	2188	regsvr32.exe	17
PID 2188 wrote to memory of 2876	2188	regsvr32.exe	17
PID 2188 wrote to memory of 2876	2188	regsvr32.exe	17

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\44a68340ef53f83e8fb0ffc33ab7e115.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2188
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\44a68340ef53f83e8fb0ffc33ab7e115.dll
  2⤵
  - Sets file execution options in registry
  - Installs/modifies Browser Helper Object
  - Drops file in System32 directory
  - Modifies registry class
  PID:2876

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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