c2c871910bbfac7bb4539d692ddcfd257c0124a6cb8125a2a1109d678c3d4ab7

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07/09/2024, 15:49

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General

Target

d24a820f84e669e46d641bc9a8be494c_JaffaCakes118.dll
Size

33KB
MD5

d24a820f84e669e46d641bc9a8be494c
SHA1

8a872cd1d2e9486524a584c55d72891a2e8b76f8
SHA256

c2c871910bbfac7bb4539d692ddcfd257c0124a6cb8125a2a1109d678c3d4ab7
SHA512

e23144b6b2ac2e18897fee66e4a8573c7a1995674efc58ed2dc6be91b25c06f52e08422ec1f988f44ec2c4c20e09395a7f030090d54ab850594fd29a4ac6fb2f
SSDEEP

768:4wRslJKTFf688AxeiRo95y47HwRxeSmmzxmF:dRssf68dxetq472Mazx8

Score

7^/10

discovery persistence

Malware Config

Signatures

Loads dropped DLL 3 IoCs

pid	Process
2688	rundll32.exe
2688	rundll32.exe
4692	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSServer = "rundll32.exe C:\\Windows\\system32\\yayyYOhG.dll,#1"	rundll32.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\yayyYOhG.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\yayyYOhG.dll	rundll32.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4EC66E48-B863-4413-BC91-463D9CCA093B}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4EC66E48-B863-4413-BC91-463D9CCA093B}\InprocServer32\ = "C:\\Windows\\SysWow64\\yayyYOhG.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4EC66E48-B863-4413-BC91-463D9CCA093B}\InprocServer32\ThreadingModel = "Both"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4EC66E48-B863-4413-BC91-463D9CCA093B}	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2688	rundll32.exe
2688	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2688	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2688	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2688	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4964 wrote to memory of 2688	4964	rundll32.exe	83
PID 4964 wrote to memory of 2688	4964	rundll32.exe	83
PID 4964 wrote to memory of 2688	4964	rundll32.exe	83
PID 2688 wrote to memory of 616	2688	rundll32.exe	5
PID 2688 wrote to memory of 4692	2688	rundll32.exe	96
PID 2688 wrote to memory of 4692	2688	rundll32.exe	96
PID 2688 wrote to memory of 4692	2688	rundll32.exe	96

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:616

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d24a820f84e669e46d641bc9a8be494c_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4964
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d24a820f84e669e46d641bc9a8be494c_JaffaCakes118.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2688
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Windows\system32\yayyYOhG.dll,a
    3⤵
    - Loads dropped DLL
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    PID:4692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\yayyYOhG.dll

Filesize
33KB

MD5
d24a820f84e669e46d641bc9a8be494c

SHA1
8a872cd1d2e9486524a584c55d72891a2e8b76f8

SHA256
c2c871910bbfac7bb4539d692ddcfd257c0124a6cb8125a2a1109d678c3d4ab7

SHA512
e23144b6b2ac2e18897fee66e4a8573c7a1995674efc58ed2dc6be91b25c06f52e08422ec1f988f44ec2c4c20e09395a7f030090d54ab850594fd29a4ac6fb2f

Download Submit
memory/2688-0-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/2688-1-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/2688-8-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/2688-10-0x0000000001440000-0x0000000001450000-memory.dmp

Filesize
64KB

Download
memory/4692-15-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/4692-16-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download