c4e1d81dd32c21270bb756a19768e62ee77e29b4ede602e6e8db3f724c28925f

Analysis

max time kernel
117s
max time network
120s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
01/02/2024, 23:56

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General

Target

88001a027ebf7d771a5edf9193501a9c.dll
Size

220KB
MD5

88001a027ebf7d771a5edf9193501a9c
SHA1

f5cbb6d75beb2da1a5e482b18cce3fde360d98b5
SHA256

c4e1d81dd32c21270bb756a19768e62ee77e29b4ede602e6e8db3f724c28925f
SHA512

8ad0b8a7a48911080120d97ff7bb6dd31e28daa7853341f6d24f2f138e8eb8c67e47205d9f142865f3e71064cb60c9a0fdd7d0934558b8d495b0699cf6c71ac4
SSDEEP

3072:lTxuLLIgfMFM8ljxy9TG3oqw9Jiaevqss7Bo8KAC9nAwTTBl2HURFuccjRYZ:qLLIgfMOGt86D0o8HClAm3PRFuXaZ

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_tk.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\{B75E2632-1BDA-358F-9C95-DEF0C501193B}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{B75E2632-1BDA-358F-9C95-DEF0C501193B}\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\ctfmon_tk.exe	regsvr32.exe

Modifies registry class 41 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID\ = "{B75E2632-1BDA-358F-9C95-DEF0C501193B}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9A6C443-A975-3070-BDA1-2460F12853AF}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{896A3E7A-8420-377B-BFF2-FF7F1E1E7C97}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID\ = "{B75E2632-1BDA-358F-9C95-DEF0C501193B}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{896A3E7A-8420-377B-BFF2-FF7F1E1E7C97}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{896A3E7A-8420-377B-BFF2-FF7F1E1E7C97}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9A6C443-A975-3070-BDA1-2460F12853AF}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9A6C443-A975-3070-BDA1-2460F12853AF}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{896A3E7A-8420-377B-BFF2-FF7F1E1E7C97}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{896A3E7A-8420-377B-BFF2-FF7F1E1E7C97}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{896A3E7A-8420-377B-BFF2-FF7F1E1E7C97}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B75E2632-1BDA-358F-9C95-DEF0C501193B}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9A6C443-A975-3070-BDA1-2460F12853AF}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{896A3E7A-8420-377B-BFF2-FF7F1E1E7C97}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B75E2632-1BDA-358F-9C95-DEF0C501193B}\ = "D"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B75E2632-1BDA-358F-9C95-DEF0C501193B}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{896A3E7A-8420-377B-BFF2-FF7F1E1E7C97}\ = "IDOMPeek"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{896A3E7A-8420-377B-BFF2-FF7F1E1E7C97}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B75E2632-1BDA-358F-9C95-DEF0C501193B}\VersionIndependentProgID\ = "D"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9A6C443-A975-3070-BDA1-2460F12853AF}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\88001a027ebf7d771a5edf9193501a9c.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9A6C443-A975-3070-BDA1-2460F12853AF}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{896A3E7A-8420-377B-BFF2-FF7F1E1E7C97}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\ = "D"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D\ = "D"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B75E2632-1BDA-358F-9C95-DEF0C501193B}\ProgID\ = "D.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B75E2632-1BDA-358F-9C95-DEF0C501193B}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9A6C443-A975-3070-BDA1-2460F12853AF}\1.0\ = "LIB"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{896A3E7A-8420-377B-BFF2-FF7F1E1E7C97}\TypeLib\ = "{A9A6C443-A975-3070-BDA1-2460F12853AF}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{896A3E7A-8420-377B-BFF2-FF7F1E1E7C97}\ = "IDOMPeek"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B75E2632-1BDA-358F-9C95-DEF0C501193B}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B75E2632-1BDA-358F-9C95-DEF0C501193B}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\88001a027ebf7d771a5edf9193501a9c.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9A6C443-A975-3070-BDA1-2460F12853AF}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9A6C443-A975-3070-BDA1-2460F12853AF}\1.0\FLAGS	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\D\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B75E2632-1BDA-358F-9C95-DEF0C501193B}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9A6C443-A975-3070-BDA1-2460F12853AF}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{896A3E7A-8420-377B-BFF2-FF7F1E1E7C97}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{896A3E7A-8420-377B-BFF2-FF7F1E1E7C97}\TypeLib\ = "{A9A6C443-A975-3070-BDA1-2460F12853AF}"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1932 wrote to memory of 2212	1932	regsvr32.exe	28
PID 1932 wrote to memory of 2212	1932	regsvr32.exe	28
PID 1932 wrote to memory of 2212	1932	regsvr32.exe	28
PID 1932 wrote to memory of 2212	1932	regsvr32.exe	28
PID 1932 wrote to memory of 2212	1932	regsvr32.exe	28
PID 1932 wrote to memory of 2212	1932	regsvr32.exe	28
PID 1932 wrote to memory of 2212	1932	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\88001a027ebf7d771a5edf9193501a9c.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\88001a027ebf7d771a5edf9193501a9c.dll
  2⤵
  - Sets file execution options in registry
  - Installs/modifies Browser Helper Object
  - Drops file in System32 directory
  - Modifies registry class
  PID:2212

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