4bf99cc458115124f1a1f72e6d9e96dcc7e64c744e6303aee5295c2d14430985

General

Target

4ac224c1a69b60b95df03c2134d6ea61.dll
Size

364KB
MD5

4ac224c1a69b60b95df03c2134d6ea61
SHA1

5b96b3a7b273769e4e7679ad839eb7f8e40710cc
SHA256

4bf99cc458115124f1a1f72e6d9e96dcc7e64c744e6303aee5295c2d14430985
SHA512

016db40a60e72037dbdc0d07b2bb6e6002faa8a9fde0c4eed45371d5b52bcaf8ef5a0bb730350d6d22164a5e8eed04e7ae6048a31007cc393deb33582381cf8d
SSDEEP

6144:kItBQpPlAfEyRrP3Zcj9lpQdr5N38YFbY0Rtn63rsp61Ji6zMc:kItBm9iEyRrfGplpQdr5N38YFbY0Rtnj

Score

6^/10

adware persistence stealer

Malware Config

Signatures

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\bwgtytsser = "C:\\Windows\\System32\\regsvr32.exe /s \"C:\\Users\\Admin\\AppData\\Local\\Temp\\4ac224c1a69b60b95df03c2134d6ea61.dll\""	regsvr32.exe

Installs/modifies Browser Helper Object 2 TTPs 2 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\{47E12190-F7AE-E0FB-95C7-32D50DCB26F9}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{47E12190-F7AE-E0FB-95C7-32D50DCB26F9}\NoExplorer = "1"	regsvr32.exe

Modifies Internet Explorer settings 1 TTPs 6 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{492B5AE2-ADF4-11EE-9A4E-5EB4A22F4468} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{47E12190-F7AE-E0FB-95C7-32D50DCB26F9}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\4ac224c1a69b60b95df03c2134d6ea61.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{47E12190-F7AE-E0FB-95C7-32D50DCB26F9}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{47E12190-F7AE-E0FB-95C7-32D50DCB26F9}\ = "blazingads browser enhancer"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{47E12190-F7AE-E0FB-95C7-32D50DCB26F9}\InProcServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{47E12190-F7AE-E0FB-95C7-32D50DCB26F9}\InProcServer32\ThreadingModel = "Apartment"	regsvr32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3648	iexplore.exe
3648	iexplore.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3568 wrote to memory of 60	3568	regsvr32.exe	21
PID 3568 wrote to memory of 60	3568	regsvr32.exe	21
PID 3568 wrote to memory of 60	3568	regsvr32.exe	21
PID 3648 wrote to memory of 2740	3648	iexplore.exe	54
PID 3648 wrote to memory of 2740	3648	iexplore.exe	54
PID 3648 wrote to memory of 2740	3648	iexplore.exe	54

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\4ac224c1a69b60b95df03c2134d6ea61.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3568
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\4ac224c1a69b60b95df03c2134d6ea61.dll
  2⤵
  - Adds Run key to start application
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:60

C:\Program Files (x86)\Internet Explorer\ielowutil.exe
"C:\Program Files (x86)\Internet Explorer\ielowutil.exe" -CLSID:{0002DF01-0000-0000-C000-000000000046} -Embedding
1⤵
PID:2312

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
1⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3648
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3648 CREDAT:17410 /prefetch:2
  2⤵
  PID:2740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Browser Extensions

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

3

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\ver3F17.tmp

Filesize
15KB

MD5
1a545d0052b581fbb2ab4c52133846bc

SHA1
62f3266a9b9925cd6d98658b92adec673cbe3dd3

SHA256
557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

SHA512
bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads