81d3ed5e27939507fe4432865c7cbf011d216707ceae784a7e1f09eaa2eb529e

Analysis

max time kernel
124s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
01-12-2022 02:19

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General

Target

81d3ed5e27939507fe4432865c7cbf011d216707ceae784a7e1f09eaa2eb529e.dll
Size

232KB
MD5

74b58d921c84c6a0d21221de84d7974f
SHA1

fca2dbcb2bc80d0076bbe90e74f7fca6bfa53af7
SHA256

81d3ed5e27939507fe4432865c7cbf011d216707ceae784a7e1f09eaa2eb529e
SHA512

0c19ffa781f1014de253bd3a62019a9566a9db5ccab35b73f4c2e689eca9ab65ab66a0d4f9515478d7093dc0106bf77b5a97c1c3092428780e8f76a1483fc96e
SSDEEP

6144:UJIgwLRcWiY8ZsTt8PmDcsf+az2BFOIAa7GU:Uq7IY8ct8PmP2BFhG

Score

8^/10

adware persistence stealer

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\explorer\Run	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\d = "C:\\Program Files (x86)\\Internet Explorer\\ctfmonfru.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\{E62E06B9-7AF7-3DFB-BF76-3C54EE2E6BA7}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{E62E06B9-7AF7-3DFB-BF76-3C54EE2E6BA7}\IExplore = "1"	regsvr32.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Internet Explorer\ctfmonfru.exe	regsvr32.exe

Modifies registry class 41 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{56E20407-A256-3F45-AF42-CB334B699171}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E62E06B9-7AF7-3DFB-BF76-3C54EE2E6BA7}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\81d3ed5e27939507fe4432865c7cbf011d216707ceae784a7e1f09eaa2eb529e.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3F48EDD1-082F-39BD-B85A-DED88697648A}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3F48EDD1-082F-39BD-B85A-DED88697648A}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3F48EDD1-082F-39BD-B85A-DED88697648A}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{56E20407-A256-3F45-AF42-CB334B699171}\ = "IDOMPeek"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\ = "D"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D\ = "D"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3F48EDD1-082F-39BD-B85A-DED88697648A}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\81d3ed5e27939507fe4432865c7cbf011d216707ceae784a7e1f09eaa2eb529e.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{56E20407-A256-3F45-AF42-CB334B699171}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID\ = "{E62E06B9-7AF7-3DFB-BF76-3C54EE2E6BA7}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E62E06B9-7AF7-3DFB-BF76-3C54EE2E6BA7}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3F48EDD1-082F-39BD-B85A-DED88697648A}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{56E20407-A256-3F45-AF42-CB334B699171}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{56E20407-A256-3F45-AF42-CB334B699171}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E62E06B9-7AF7-3DFB-BF76-3C54EE2E6BA7}\ = "D"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{56E20407-A256-3F45-AF42-CB334B699171}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{56E20407-A256-3F45-AF42-CB334B699171}\ = "IDOMPeek"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{56E20407-A256-3F45-AF42-CB334B699171}\TypeLib\ = "{3F48EDD1-082F-39BD-B85A-DED88697648A}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{56E20407-A256-3F45-AF42-CB334B699171}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E62E06B9-7AF7-3DFB-BF76-3C54EE2E6BA7}\ProgID\ = "D.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E62E06B9-7AF7-3DFB-BF76-3C54EE2E6BA7}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E62E06B9-7AF7-3DFB-BF76-3C54EE2E6BA7}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3F48EDD1-082F-39BD-B85A-DED88697648A}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3F48EDD1-082F-39BD-B85A-DED88697648A}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{56E20407-A256-3F45-AF42-CB334B699171}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E62E06B9-7AF7-3DFB-BF76-3C54EE2E6BA7}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E62E06B9-7AF7-3DFB-BF76-3C54EE2E6BA7}\VersionIndependentProgID\ = "D"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3F48EDD1-082F-39BD-B85A-DED88697648A}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{56E20407-A256-3F45-AF42-CB334B699171}\TypeLib\ = "{3F48EDD1-082F-39BD-B85A-DED88697648A}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{56E20407-A256-3F45-AF42-CB334B699171}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{56E20407-A256-3F45-AF42-CB334B699171}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3F48EDD1-082F-39BD-B85A-DED88697648A}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3F48EDD1-082F-39BD-B85A-DED88697648A}\1.0\ = "LIB"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID\ = "{E62E06B9-7AF7-3DFB-BF76-3C54EE2E6BA7}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E62E06B9-7AF7-3DFB-BF76-3C54EE2E6BA7}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{56E20407-A256-3F45-AF42-CB334B699171}\TypeLib\Version = "1.0"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4972 wrote to memory of 4376	4972	regsvr32.exe	81
PID 4972 wrote to memory of 4376	4972	regsvr32.exe	81
PID 4972 wrote to memory of 4376	4972	regsvr32.exe	81

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\81d3ed5e27939507fe4432865c7cbf011d216707ceae784a7e1f09eaa2eb529e.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4972
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\81d3ed5e27939507fe4432865c7cbf011d216707ceae784a7e1f09eaa2eb529e.dll
  2⤵
  - Adds policy Run key to start application
  - Installs/modifies Browser Helper Object
  - Drops file in Program Files directory
  - Modifies registry class
  PID:4376

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Browser Extensions

T1176

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4376-132-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads