1250a51e6dfd385a043b2c6a8d907ce6576e238ab52e9b95f96504ee3138835d

Analysis

max time kernel
117s
max time network
122s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
04-01-2024 23:56

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General

Target

423eca9e338f34d056e02e68ecd1e049.dll
Size

419KB
MD5

423eca9e338f34d056e02e68ecd1e049
SHA1

756484786bc2eb19b9820698ceeac3479ddba10a
SHA256

1250a51e6dfd385a043b2c6a8d907ce6576e238ab52e9b95f96504ee3138835d
SHA512

1640feee7b3dc20266216d9d095230394ca65eb1628af02f213c7960ca799fe34231ccc5ab2c2dae4d57ec6f7c54bd3af1940f317027a7b221d416401223fc27
SSDEEP

6144:kdZtn91mWXnHsz3h848+PAB3kWmnxrrucIG94DEOEnXHjN4cRVbgZiVaKCa:kdZtnfh3s7a4emn07cUryp4Xcn

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
behavioral1/memory/2860-0-0x00000000009D0000-0x0000000000AC7000-memory.dmp	upx

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\{3979C001-04CE-4DFE-AC5C-37BD8DF89B9A}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{3979C001-04CE-4DFE-AC5C-37BD8DF89B9A}\NoExplorer = "1"	regsvr32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3979C001-04CE-4DFE-AC5C-37BD8DF89B9A}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3979C001-04CE-4DFE-AC5C-37BD8DF89B9A}\	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3979C001-04CE-4DFE-AC5C-37BD8DF89B9A}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3979C001-04CE-4DFE-AC5C-37BD8DF89B9A}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\423eca9e338f34d056e02e68ecd1e049.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3979C001-04CE-4DFE-AC5C-37BD8DF89B9A}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2088 wrote to memory of 2860	2088	regsvr32.exe	28
PID 2088 wrote to memory of 2860	2088	regsvr32.exe	28
PID 2088 wrote to memory of 2860	2088	regsvr32.exe	28
PID 2088 wrote to memory of 2860	2088	regsvr32.exe	28
PID 2088 wrote to memory of 2860	2088	regsvr32.exe	28
PID 2088 wrote to memory of 2860	2088	regsvr32.exe	28
PID 2088 wrote to memory of 2860	2088	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\423eca9e338f34d056e02e68ecd1e049.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2088
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\423eca9e338f34d056e02e68ecd1e049.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:2860

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/2860-0-0x00000000009D0000-0x0000000000AC7000-memory.dmp

Filesize
988KB

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