7aa87475dfcfb5c9c8bab0d797c54f6ea53198fe91e1a97b74d5e10e097dfdd9

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
24/12/2023, 17:06

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General

Target

075ba514c099aed56c628093345c77af.dll
Size

248KB
MD5

075ba514c099aed56c628093345c77af
SHA1

de127b7734a9f6355611950b3332d3021d079970
SHA256

7aa87475dfcfb5c9c8bab0d797c54f6ea53198fe91e1a97b74d5e10e097dfdd9
SHA512

fcf14a0f3d1531aa5e27da655fb108727a9296c017e89677187c3a4bf9049687346c6f8e93bc658b6d7233478a3e6212cdaad45871673a248fe24e3f5ce15505
SSDEEP

6144:NR3Hk20K+Os0UxJ38hU63Nqr21dHwhCuM:LXke+Os0vQ61dHwhH

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\\ctfmonhsa.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
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{7C2DABB9-8E53-39E0-9726-3ED7E1ECFDC9}\IExplore = "1"	regsvr32.exe
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\{7C2DABB9-8E53-39E0-9726-3ED7E1ECFDC9}	regsvr32.exe

Drops file in System32 directory 1 IoCs

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

Modifies registry class 41 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C2DABB9-8E53-39E0-9726-3ED7E1ECFDC9}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{8BF5A6C2-FF6F-3787-B9E3-0C496947B717}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{13433220-E6B4-3371-9DDE-7FDAC3C4387B}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C2DABB9-8E53-39E0-9726-3ED7E1ECFDC9}\ = "D"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C2DABB9-8E53-39E0-9726-3ED7E1ECFDC9}\VersionIndependentProgID\ = "D"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{13433220-E6B4-3371-9DDE-7FDAC3C4387B}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{13433220-E6B4-3371-9DDE-7FDAC3C4387B}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{13433220-E6B4-3371-9DDE-7FDAC3C4387B}\TypeLib\ = "{8BF5A6C2-FF6F-3787-B9E3-0C496947B717}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C2DABB9-8E53-39E0-9726-3ED7E1ECFDC9}\ProgID\ = "D.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{8BF5A6C2-FF6F-3787-B9E3-0C496947B717}\1.0\ = "LIB"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{8BF5A6C2-FF6F-3787-B9E3-0C496947B717}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{13433220-E6B4-3371-9DDE-7FDAC3C4387B}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{13433220-E6B4-3371-9DDE-7FDAC3C4387B}\ = "IDOMPeek"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{13433220-E6B4-3371-9DDE-7FDAC3C4387B}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C2DABB9-8E53-39E0-9726-3ED7E1ECFDC9}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C2DABB9-8E53-39E0-9726-3ED7E1ECFDC9}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\075ba514c099aed56c628093345c77af.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{8BF5A6C2-FF6F-3787-B9E3-0C496947B717}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{13433220-E6B4-3371-9DDE-7FDAC3C4387B}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{8BF5A6C2-FF6F-3787-B9E3-0C496947B717}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\075ba514c099aed56c628093345c77af.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{8BF5A6C2-FF6F-3787-B9E3-0C496947B717}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{13433220-E6B4-3371-9DDE-7FDAC3C4387B}\ = "IDOMPeek"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID\ = "{7C2DABB9-8E53-39E0-9726-3ED7E1ECFDC9}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C2DABB9-8E53-39E0-9726-3ED7E1ECFDC9}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{8BF5A6C2-FF6F-3787-B9E3-0C496947B717}\1.0\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{8BF5A6C2-FF6F-3787-B9E3-0C496947B717}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{8BF5A6C2-FF6F-3787-B9E3-0C496947B717}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{8BF5A6C2-FF6F-3787-B9E3-0C496947B717}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{13433220-E6B4-3371-9DDE-7FDAC3C4387B}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\ = "D"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID\ = "{7C2DABB9-8E53-39E0-9726-3ED7E1ECFDC9}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C2DABB9-8E53-39E0-9726-3ED7E1ECFDC9}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{13433220-E6B4-3371-9DDE-7FDAC3C4387B}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D\ = "D"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C2DABB9-8E53-39E0-9726-3ED7E1ECFDC9}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{13433220-E6B4-3371-9DDE-7FDAC3C4387B}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{13433220-E6B4-3371-9DDE-7FDAC3C4387B}\TypeLib\ = "{8BF5A6C2-FF6F-3787-B9E3-0C496947B717}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{13433220-E6B4-3371-9DDE-7FDAC3C4387B}\TypeLib\Version = "1.0"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 1820	2092	regsvr32.exe	16
PID 2092 wrote to memory of 1820	2092	regsvr32.exe	16
PID 2092 wrote to memory of 1820	2092	regsvr32.exe	16
PID 2092 wrote to memory of 1820	2092	regsvr32.exe	16
PID 2092 wrote to memory of 1820	2092	regsvr32.exe	16
PID 2092 wrote to memory of 1820	2092	regsvr32.exe	16
PID 2092 wrote to memory of 1820	2092	regsvr32.exe	16

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\075ba514c099aed56c628093345c77af.dll
1⤵
- Sets file execution options in registry
- Installs/modifies Browser Helper Object
- Drops file in System32 directory
- Modifies registry class
PID:1820

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\075ba514c099aed56c628093345c77af.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2092

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

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Downloads