5fb72509d593265e08bd91963071a2fbb43ff231a95d9b2e3d437c832b294995

Analysis

max time kernel
141s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
14/02/2024, 04:37

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General

Target
9ac51f33ad73160043e2d83dfac12934.dll
Size 203KB
Sample240214-e9a33shc3t
SHA256 5fb72509d593265e08bd91963071a2fbb43ff231a95d9b2e3d437c832b294995
MD5 9ac51f33ad73160043e2d83dfac12934
SHA1 bd710d4b884ad3963d89c3038e6c5a00b214b328
SHA512 e11d7e1f14dbf41c686be4d8588a8f7cc71ebab591f640d13adf1c6df41e3f413cc5a5fb4cf3b967404e05fa062ffd57c40509758fa4d7d9d6605192beb3a14b
SSDEEP 3072:Bk2febYn/z0nSqK6AEkm6u3Oz/C9qKih+ZquliPcJK:Bks9z0nSz6AEFNOz6g+ZquMP
MD5 SHA1 SHA512 SSDEEP

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
behavioral2/memory/3420-0-0x0000000010400000-0x000000001048B000-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\{54EBD53A-9BC1-480B-966A-843A333CA162}	regsvr32.exe

Modifies registry class 11 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\9ac51f33ad73160043e2d83dfac12934.Thunder5BHO\Clsid	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{54EBD53A-9BC1-480B-966A-843A333CA162}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{54EBD53A-9BC1-480B-966A-843A333CA162}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{54EBD53A-9BC1-480B-966A-843A333CA162}\ = "Thunder5ÏÂÔØ"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{54EBD53A-9BC1-480B-966A-843A333CA162}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\9ac51f33ad73160043e2d83dfac12934.Thunder5BHO	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\9ac51f33ad73160043e2d83dfac12934.Thunder5BHO\ = "Thunder5ÏÂÔØ"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{54EBD53A-9BC1-480B-966A-843A333CA162}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{54EBD53A-9BC1-480B-966A-843A333CA162}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\9ac51f33ad73160043e2d83dfac12934.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\9ac51f33ad73160043e2d83dfac12934.Thunder5BHO\Clsid\ = "{54EBD53A-9BC1-480B-966A-843A333CA162}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{54EBD53A-9BC1-480B-966A-843A333CA162}\ProgID\ = "9ac51f33ad73160043e2d83dfac12934.Thunder5BHO"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4776 wrote to memory of 3420	4776	regsvr32.exe	84
PID 4776 wrote to memory of 3420	4776	regsvr32.exe	84
PID 4776 wrote to memory of 3420	4776	regsvr32.exe	84

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\9ac51f33ad73160043e2d83dfac12934.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4776
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\9ac51f33ad73160043e2d83dfac12934.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:3420

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

Replay Monitor

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Downloads

memory/3420-0-0x0000000010400000-0x000000001048B000-memory.dmp

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