f8e3edcf7bf679097d065b2bf993eee3be30e2db17c9c5f8835788f2f113a20c

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
09-07-2024 05:58

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General

Target

2f3941a308d37c683aa8feb74fb5d80d_JaffaCakes118.dll
Size

1.2MB
MD5

2f3941a308d37c683aa8feb74fb5d80d
SHA1

e26269ff3332199617095567ac05f9da9d483624
SHA256

f8e3edcf7bf679097d065b2bf993eee3be30e2db17c9c5f8835788f2f113a20c
SHA512

ce83c7d354d588449233728fa4d21334a172140b91c5295092331860ff81ffb799a33356b81266bc92a8283ae514179dba06c2f1ba6ca7f6b5407a813d59a61c
SSDEEP

24576:jczx/2GNbKQpOeZGdynuPWk9yQ1kUCgoGly08lC:wJaMZNUpoWM

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/4904-0-0x0000000000400000-0x0000000000535000-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\{A9F81D8B-04F9-4054-AEE5-F75DD71F0992}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{A9F81D8B-04F9-4054-AEE5-F75DD71F0992}\Noexplorer = "1"	regsvr32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A9F81D8B-04F9-4054-AEE5-F75DD71F0992}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A9F81D8B-04F9-4054-AEE5-F75DD71F0992}\	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A9F81D8B-04F9-4054-AEE5-F75DD71F0992}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A9F81D8B-04F9-4054-AEE5-F75DD71F0992}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2f3941a308d37c683aa8feb74fb5d80d_JaffaCakes118.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A9F81D8B-04F9-4054-AEE5-F75DD71F0992}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4904	regsvr32.exe
4904	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3252 wrote to memory of 4904	3252	regsvr32.exe	82
PID 3252 wrote to memory of 4904	3252	regsvr32.exe	82
PID 3252 wrote to memory of 4904	3252	regsvr32.exe	82

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\2f3941a308d37c683aa8feb74fb5d80d_JaffaCakes118.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3252
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\2f3941a308d37c683aa8feb74fb5d80d_JaffaCakes118.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  - Suspicious use of SetWindowsHookEx
  PID:4904

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/4904-0-0x0000000000400000-0x0000000000535000-memory.dmp

Filesize
1.2MB

Download
memory/4904-1-0x0000000000D30000-0x0000000000D31000-memory.dmp

Filesize
4KB

Download