90dd899c086be49d01a2c5d6893edd9e5e7155ec91dec3869f19f50301b66a32

Analysis

max time kernel
41s
max time network
44s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
02/10/2022, 06:06

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General

Target

90dd899c086be49d01a2c5d6893edd9e5e7155ec91dec3869f19f50301b66a32.dll
Size

209KB
MD5

66072a1bcd116ea0ae927a942c0e6c50
SHA1

ee866abe3e1440ffd1e956930f7c0631900db502
SHA256

90dd899c086be49d01a2c5d6893edd9e5e7155ec91dec3869f19f50301b66a32
SHA512

4e6acca3408f586b6cdf1bf1ffd1f6c6f10a43147e60188986daf72e00b2c6e828708c57984c807060f54757e33cf20a39be0dcde9d15003671ced8b98201e75
SSDEEP

6144:sxJbDzzwGOwpgzbthHWG82E55r+xShaMRfps5QC+9Tpv:srDvwDhHWG8RPBNSZEl

Score

6^/10

adware stealer

Malware Config

Signatures

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\{9C4218AC-B30F-4766-9638-DAA5CA570E9A}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{9C4218AC-B30F-4766-9638-DAA5CA570E9A}\firststart = "0"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{9C4218AC-B30F-4766-9638-DAA5CA570E9A}\NoExplorer = "1"	regsvr32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9C4218AC-B30F-4766-9638-DAA5CA570E9A}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9C4218AC-B30F-4766-9638-DAA5CA570E9A}\	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9C4218AC-B30F-4766-9638-DAA5CA570E9A}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9C4218AC-B30F-4766-9638-DAA5CA570E9A}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\90dd899c086be49d01a2c5d6893edd9e5e7155ec91dec3869f19f50301b66a32.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9C4218AC-B30F-4766-9638-DAA5CA570E9A}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1508 wrote to memory of 1400	1508	regsvr32.exe	26
PID 1508 wrote to memory of 1400	1508	regsvr32.exe	26
PID 1508 wrote to memory of 1400	1508	regsvr32.exe	26
PID 1508 wrote to memory of 1400	1508	regsvr32.exe	26
PID 1508 wrote to memory of 1400	1508	regsvr32.exe	26
PID 1508 wrote to memory of 1400	1508	regsvr32.exe	26
PID 1508 wrote to memory of 1400	1508	regsvr32.exe	26

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\90dd899c086be49d01a2c5d6893edd9e5e7155ec91dec3869f19f50301b66a32.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1508
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\90dd899c086be49d01a2c5d6893edd9e5e7155ec91dec3869f19f50301b66a32.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:1400

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Browser Extensions

T1176

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1400-56-0x0000000075451000-0x0000000075453000-memory.dmp

Filesize
8KB

Download
memory/1508-54-0x000007FEFBAB1000-0x000007FEFBAB3000-memory.dmp

Filesize
8KB

Download