3fb0542513b89a1a4225f95863447cd9efc1c58398cab3158ebe893f3ea13258

Analysis

max time kernel
118s
max time network
123s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
27/01/2024, 07:40

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General

Target

smtiestarter.dll
Size

194KB
MD5

e78aea971de3c3dbcfb70c0b08293fa6
SHA1

7151e06e4f2c2902d01a8548693adfa02bf09d53
SHA256

d30e8d6a356d110102c1e2edcc2b013dc2897398fffc5f5c2d1aa83d20cca0ce
SHA512

025a5e437d2c2f7ce476dbf268e912a47562e163f93d7641a8f10c86c201da3d9a3b1ad3c30bc69507c1a270f32eca477f274678e2c8b7d280f3619fbbf3d8a1
SSDEEP

6144:6mXy8TQdqfiI8zhVXjnb4iElu41oeZ/X:WEfiLhVP4iCBZ

Score

7^/10

adware stealer upx

Malware Config

Signatures

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral3/memory/2272-0-0x00000000006D0000-0x0000000000753000-memory.dmp	upx

Installs/modifies Browser Helper Object 2 TTPs 1 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\{71C1129C-1253-4C97-82CA-B6D1E568072E}	regsvr32.exe

Modifies Internet Explorer settings 1 TTPs 10 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Internet Explorer\SearchScopes\{71C1129C-1253-4C97-82CA-B6D1E568072E}\DisplayName = "Naver"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Internet Explorer\SearchScopes\{71C1129C-1253-4C97-82CA-B6D1E568072E}\URL = "http://search.naver.com/search.naver?where=nexearch&query={searchTerms}"	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{F4D18791-01AD-4A13-A43F-677A85EACB08}	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Internet Explorer\Low Rights	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Internet Explorer\Low Rights\ElevationPolicy	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{F4D18791-01AD-4A13-A43F-677A85EACB08}\AppName = "SggMMt.exe"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Internet Explorer\SearchScopes\DefaultScope = "{71C1129C-1253-4C97-82CA-B6D1E568072E}"	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Internet Explorer\SearchScopes\{71C1129C-1253-4C97-82CA-B6D1E568072E}	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{F4D18791-01AD-4A13-A43F-677A85EACB08}\AppPath = "C:\\Program Files (x86)\\SmartAppUpdate"	regsvr32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{F4D18791-01AD-4A13-A43F-677A85EACB08}\Policy = "3"	regsvr32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{71C1129C-1253-4C97-82CA-B6D1E568072E}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{71C1129C-1253-4C97-82CA-B6D1E568072E}\	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{71C1129C-1253-4C97-82CA-B6D1E568072E}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{71C1129C-1253-4C97-82CA-B6D1E568072E}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\smtiestarter.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{71C1129C-1253-4C97-82CA-B6D1E568072E}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2548 wrote to memory of 2272	2548	regsvr32.exe	28
PID 2548 wrote to memory of 2272	2548	regsvr32.exe	28
PID 2548 wrote to memory of 2272	2548	regsvr32.exe	28
PID 2548 wrote to memory of 2272	2548	regsvr32.exe	28
PID 2548 wrote to memory of 2272	2548	regsvr32.exe	28
PID 2548 wrote to memory of 2272	2548	regsvr32.exe	28
PID 2548 wrote to memory of 2272	2548	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\smtiestarter.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2548
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\smtiestarter.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies Internet Explorer settings
  - Modifies registry class
  PID:2272

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

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Downloads

memory/2272-0-0x00000000006D0000-0x0000000000753000-memory.dmp

Filesize
524KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads