4b92a9a55bbd077ecec112586bc6400e8ef90ddde478c1cbcfeecb208e85f8a9

Analysis

max time kernel
92s
max time network
112s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
15/04/2024, 10:43

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General

Target
f0dec3ea2870f52e98725783216fecb2_JaffaCakes118.dll
Size 90KB
Sample240415-msnlvace48
SHA256 4b92a9a55bbd077ecec112586bc6400e8ef90ddde478c1cbcfeecb208e85f8a9
MD5 f0dec3ea2870f52e98725783216fecb2
SHA1 39e67a2dbb6c618c0e11be65a18b9e39387fac9a
SHA512 6e5a96318d1f06be455746e480acc978180b656645e878fb287d48a4d3be8bc5cd9f945147f9026282261bb2caaf94ffae44902fefe691bf138810159226a807
SSDEEP 1536:aYvynn+A2V7uC5Z7wIe/hmQpnDfnt+TAZi/UaMpRLA5PO+p4qm/p8Ezie2InDxOl:Xv4+AyB1e/hvpnsTAjh8W+qqm/pet2Dw
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/3076-0-0x0000000000400000-0x000000000043C000-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\{3F6BBA47-095D-462A-B0E9-CEDEA554C34A}	regsvr32.exe

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3F6BBA47-095D-462A-B0E9-CEDEA554C34A}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3F6BBA47-095D-462A-B0E9-CEDEA554C34A}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3F6BBA47-095D-462A-B0E9-CEDEA554C34A}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f0dec3ea2870f52e98725783216fecb2_JaffaCakes118.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3F6BBA47-095D-462A-B0E9-CEDEA554C34A}\InprocServer32\ThreadingModel = "apartment"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4960 wrote to memory of 3076	4960	regsvr32.exe	86
PID 4960 wrote to memory of 3076	4960	regsvr32.exe	86
PID 4960 wrote to memory of 3076	4960	regsvr32.exe	86

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f0dec3ea2870f52e98725783216fecb2_JaffaCakes118.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4960
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\f0dec3ea2870f52e98725783216fecb2_JaffaCakes118.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:3076

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/3076-0-0x0000000000400000-0x000000000043C000-memory.dmp

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