521ebdd2c15fa93a29b8ee7288f7d5d2746d479d13052e126c753a4b10a595be

Analysis

max time kernel
122s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
12/03/2024, 01:21

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General

Target

c2193a0ba432c2827dba896b308809cf.dll
Size

192KB
MD5

c2193a0ba432c2827dba896b308809cf
SHA1

a0022cf71daa96f2ed4a4ec41bf63f11853cdd49
SHA256

521ebdd2c15fa93a29b8ee7288f7d5d2746d479d13052e126c753a4b10a595be
SHA512

ec21365a3f626cda5a47c8efaa474653fa8edcfb188700cd864f1bcc1f268e9185303b526d66bbd074c6bb6d424554dde8ff4fc172af55c09a566bfad1dbbfba
SSDEEP

3072:e+mrh42ya4kcFoWZHlWzzXGOJlBpPlPlUAVa0Th+7dUchB6p:2rh42xcTHlrMXRlP9+7dd

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\\ctfmon_lr.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\{5AEA76FD-68F5-3A2E-B79A-5CD7041C028F}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{5AEA76FD-68F5-3A2E-B79A-5CD7041C028F}\IExplore = "1"	regsvr32.exe

Drops file in System32 directory 1 IoCs

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

Modifies registry class 41 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5AEA76FD-68F5-3A2E-B79A-5CD7041C028F}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\c2193a0ba432c2827dba896b308809cf.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2A38FCA1-18D9-33F9-BC8B-5A0BB0F2FA6C}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{85B2A4C7-DF1A-3BD3-ACD7-E4D85913BBE9}\TypeLib\ = "{2A38FCA1-18D9-33F9-BC8B-5A0BB0F2FA6C}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2A38FCA1-18D9-33F9-BC8B-5A0BB0F2FA6C}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{85B2A4C7-DF1A-3BD3-ACD7-E4D85913BBE9}\TypeLib\ = "{2A38FCA1-18D9-33F9-BC8B-5A0BB0F2FA6C}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5AEA76FD-68F5-3A2E-B79A-5CD7041C028F}\ = "D"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5AEA76FD-68F5-3A2E-B79A-5CD7041C028F}\VersionIndependentProgID\ = "D"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5AEA76FD-68F5-3A2E-B79A-5CD7041C028F}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5AEA76FD-68F5-3A2E-B79A-5CD7041C028F}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5AEA76FD-68F5-3A2E-B79A-5CD7041C028F}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5AEA76FD-68F5-3A2E-B79A-5CD7041C028F}\ProgID\ = "D.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2A38FCA1-18D9-33F9-BC8B-5A0BB0F2FA6C}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\c2193a0ba432c2827dba896b308809cf.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2A38FCA1-18D9-33F9-BC8B-5A0BB0F2FA6C}\1.0\HELPDIR	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\D\CLSID\ = "{5AEA76FD-68F5-3A2E-B79A-5CD7041C028F}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2A38FCA1-18D9-33F9-BC8B-5A0BB0F2FA6C}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2A38FCA1-18D9-33F9-BC8B-5A0BB0F2FA6C}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{85B2A4C7-DF1A-3BD3-ACD7-E4D85913BBE9}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2A38FCA1-18D9-33F9-BC8B-5A0BB0F2FA6C}\1.0\ = "LIB"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{85B2A4C7-DF1A-3BD3-ACD7-E4D85913BBE9}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{85B2A4C7-DF1A-3BD3-ACD7-E4D85913BBE9}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID\ = "{5AEA76FD-68F5-3A2E-B79A-5CD7041C028F}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{85B2A4C7-DF1A-3BD3-ACD7-E4D85913BBE9}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{85B2A4C7-DF1A-3BD3-ACD7-E4D85913BBE9}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{85B2A4C7-DF1A-3BD3-ACD7-E4D85913BBE9}\ = "IDOMPeek"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{85B2A4C7-DF1A-3BD3-ACD7-E4D85913BBE9}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{85B2A4C7-DF1A-3BD3-ACD7-E4D85913BBE9}\ = "IDOMPeek"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{85B2A4C7-DF1A-3BD3-ACD7-E4D85913BBE9}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{85B2A4C7-DF1A-3BD3-ACD7-E4D85913BBE9}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D\ = "D"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5AEA76FD-68F5-3A2E-B79A-5CD7041C028F}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2A38FCA1-18D9-33F9-BC8B-5A0BB0F2FA6C}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2A38FCA1-18D9-33F9-BC8B-5A0BB0F2FA6C}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{85B2A4C7-DF1A-3BD3-ACD7-E4D85913BBE9}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{85B2A4C7-DF1A-3BD3-ACD7-E4D85913BBE9}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\ = "D"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5AEA76FD-68F5-3A2E-B79A-5CD7041C028F}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2A38FCA1-18D9-33F9-BC8B-5A0BB0F2FA6C}\1.0\FLAGS	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2944 wrote to memory of 2352	2944	regsvr32.exe	28
PID 2944 wrote to memory of 2352	2944	regsvr32.exe	28
PID 2944 wrote to memory of 2352	2944	regsvr32.exe	28
PID 2944 wrote to memory of 2352	2944	regsvr32.exe	28
PID 2944 wrote to memory of 2352	2944	regsvr32.exe	28
PID 2944 wrote to memory of 2352	2944	regsvr32.exe	28
PID 2944 wrote to memory of 2352	2944	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\c2193a0ba432c2827dba896b308809cf.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2944
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\c2193a0ba432c2827dba896b308809cf.dll
  2⤵
  - Sets file execution options in registry
  - Installs/modifies Browser Helper Object
  - Drops file in System32 directory
  - Modifies registry class
  PID:2352

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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