a547b75b5fd18af1db171d5027a59553031c80bb70bc896bbcd8d4c5c0f02e7f

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
20/06/2024, 13:58

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General

Target
06a0aa9dc5a05fa7f034b8f7eea5dfb3_JaffaCakes118.exe
Size 740KB
Sample240620-q99gesvgrl
SHA256 a547b75b5fd18af1db171d5027a59553031c80bb70bc896bbcd8d4c5c0f02e7f
MD5 06a0aa9dc5a05fa7f034b8f7eea5dfb3
SHA1 b723ae168e9cc238e117511f6a5052a52d9a0d53
SHA512 27f205606e7607f0548b5c0909d9238244c5e3ae5678a1420e9fc995eddd570adcd4af8e6ee1c3202765ff254be250b8c6a7c1da55ceb632338334818b58f3b3
SSDEEP 12288:/q6p3+gVffUb9ZHy0v7iXMOq4GgsBNvw5pt74g8SA1Cs:n5NfG7Sa74M0IsFX8SA
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

adware stealer

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
1756	Regsvr32.exe

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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\	Regsvr32.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}	Regsvr32.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\mmzap.ini	06a0aa9dc5a05fa7f034b8f7eea5dfb3_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\pgauuwijvsdhz.dll	06a0aa9dc5a05fa7f034b8f7eea5dfb3_JaffaCakes118.exe

Modifies registry class 11 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\pgauuwijvsdhz.TIEBHOCom\Clsid	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\pgauuwijvsdhz.TIEBHOCom\Clsid\ = "{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}"	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\ProgID\ = "pgauuwijvsdhz.TIEBHOCom"	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\InprocServer32\ = "C:\\Windows\\SysWow64\\pgauuwijvsdhz.dll"	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\InprocServer32\ThreadingModel = "Apartment"	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\pgauuwijvsdhz.TIEBHOCom	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\InprocServer32	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\pgauuwijvsdhz.TIEBHOCom\	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\ProgID	Regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 652 wrote to memory of 1756	652	06a0aa9dc5a05fa7f034b8f7eea5dfb3_JaffaCakes118.exe	81
PID 652 wrote to memory of 1756	652	06a0aa9dc5a05fa7f034b8f7eea5dfb3_JaffaCakes118.exe	81
PID 652 wrote to memory of 1756	652	06a0aa9dc5a05fa7f034b8f7eea5dfb3_JaffaCakes118.exe	81

C:\Users\Admin\AppData\Local\Temp\06a0aa9dc5a05fa7f034b8f7eea5dfb3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\06a0aa9dc5a05fa7f034b8f7eea5dfb3_JaffaCakes118.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:652
- C:\Windows\SysWOW64\Regsvr32.exe
  Regsvr32.exe /s C:\Windows\system32\pgauuwijvsdhz.dll
  2⤵
  - Loads dropped DLL
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:1756

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

pgauuwijvsdhz.dll

Path C:\Windows\SysWOW64\pgauuwijvsdhz.dll
Size 587KB
SHA256 03e13fe29752d00ec6e71c722641264ac8685ca562b54c14fa8e835d96d631e0
MD5 a10c002919bc4fb4e757c54dea675756
SHA1 21225b0bb6771c691b48371d4deda63dad26598a
SHA512 f0cec984ef2bc5706848c82ef155e838f9288650d55046d6dad33869dd1d3c09ae5725779a8c88ffa5156e72517338230d6a1f647e0310b283cf65a1e31b0f64
SSDEEP 12288:5Ub9ZHy0v7iXMOq4GgsBNvw5pt74g8SA1C:5G7Sa74M0IsFX8SA
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/652-0-0x0000000000400000-0x00000000004B9000-memory.dmp

Download

memory/652-5-0x0000000000400000-0x00000000004B9000-memory.dmp