f705ab554acea08b1efd566d5a5119288b36a3c1e65e26f7765ddfaeb2322ef4

General

Target

f705ab554acea08b1efd566d5a5119288b36a3c1e65e26f7765ddfaeb2322ef4.dll
Size

409KB
MD5

6d9e1245dbfe770908444670bfe6d687
SHA1

98b1c79d79812f2fc2c12094c7ef922f10547fda
SHA256

f705ab554acea08b1efd566d5a5119288b36a3c1e65e26f7765ddfaeb2322ef4
SHA512

d32b2ac7db8dae9f5e022fe17d55f0dcbf281bc9ae9cb18fba53251c25fa4cbed7c59599149e8e715901eef50a910649d1ac27946ae5f8cb6cd2a76875d6d92a
SSDEEP

6144:ZsZnFR9H6jpyUHSxsM8shpIqZ5JUfn/vW5jYU35z59N4/IfkbVDqpvF0x3aQZ8pC:axN6jp1csM1pIqNOK1zrWgfaqpvq1Wp

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\{98B822AD-6BE7-49BC-B773-97240B774080}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{98B822AD-6BE7-49BC-B773-97240B774080}\ = "HttpGuard"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{98B822AD-6BE7-49BC-B773-97240B774080}\NoExplorer = "1"	regsvr32.exe

Modifies registry class 17 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{98B822AD-6BE7-49BC-B773-97240B774080}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f705ab554acea08b1efd566d5a5119288b36a3c1e65e26f7765ddfaeb2322ef4.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AClient.HttpGuard.1\CLSID\ = "{98B822AD-6BE7-49BC-B773-97240B774080}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{98B822AD-6BE7-49BC-B773-97240B774080}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{98B822AD-6BE7-49BC-B773-97240B774080}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{98B822AD-6BE7-49BC-B773-97240B774080}\InprocServer32\ThreadingModel = "both"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AClient.HttpGuard.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AClient.HttpGuard\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{98B822AD-6BE7-49BC-B773-97240B774080}\VersionIndependentProgID\ = "AClient.HttpGuard"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AClient.HttpGuard.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AClient.HttpGuard	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AClient.HttpGuard\ = "HttpGuard Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AClient.HttpGuard\CLSID\ = "{98B822AD-6BE7-49BC-B773-97240B774080}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{98B822AD-6BE7-49BC-B773-97240B774080}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{98B822AD-6BE7-49BC-B773-97240B774080}\ = "HttpGuard Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{98B822AD-6BE7-49BC-B773-97240B774080}\ProgID\ = "AClient.HttpGuard.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{98B822AD-6BE7-49BC-B773-97240B774080}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AClient.HttpGuard.1\ = "HttpGuard Class"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1792 wrote to memory of 1780	1792	regsvr32.exe	28
PID 1792 wrote to memory of 1780	1792	regsvr32.exe	28
PID 1792 wrote to memory of 1780	1792	regsvr32.exe	28
PID 1792 wrote to memory of 1780	1792	regsvr32.exe	28
PID 1792 wrote to memory of 1780	1792	regsvr32.exe	28
PID 1792 wrote to memory of 1780	1792	regsvr32.exe	28
PID 1792 wrote to memory of 1780	1792	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f705ab554acea08b1efd566d5a5119288b36a3c1e65e26f7765ddfaeb2322ef4.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1792
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\f705ab554acea08b1efd566d5a5119288b36a3c1e65e26f7765ddfaeb2322ef4.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:1780

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Browser Extensions

1

T1176

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1780-55-0x0000000000000000-mapping.dmp

Download
memory/1780-56-0x0000000076321000-0x0000000076323000-memory.dmp

Filesize
8KB

Download
memory/1780-57-0x00000000001B0000-0x0000000000219000-memory.dmp

Filesize
420KB

Download
memory/1780-58-0x0000000010000000-0x0000000010065000-memory.dmp

Filesize
404KB

Download
memory/1780-60-0x00000000001B0000-0x0000000000219000-memory.dmp

Filesize
420KB

Download
memory/1780-61-0x0000000010000000-0x0000000010065000-memory.dmp

Filesize
404KB

Download
memory/1792-54-0x000007FEFBD01000-0x000007FEFBD03000-memory.dmp

Filesize
8KB

Download

Analysis

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