7023a49ceeae5fafce494ce50b49886a772055cd35ee5e1400b4818501ff747c

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240910-en
resource tags

arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system
submitted
01/10/2024, 04:37

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

04653064620c0bae182596ac5495ea1b_JaffaCakes118.dll
Size

236KB
MD5

04653064620c0bae182596ac5495ea1b
SHA1

f7d4d354e43bf1f419fbc429178fe8ba66fc76aa
SHA256

7023a49ceeae5fafce494ce50b49886a772055cd35ee5e1400b4818501ff747c
SHA512

38bde0f9e094c99f606c637d8c75fe872d61a0c3a8c4273f68370d00d63a3f530d283785035f1a7620ac17aab754b32117aa584f390b0123952a2f01aed7774d
SSDEEP

3072:SeqmgHwlaazN9U3J+P0wFp+bLrt2wkkIw:+Qj9U3jwO3rt5/

Score

10^/10

discovery persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\gpk = "{a5eaad64-2d62-72b7-3e73-2d6225ec5e4b}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1296	rundll32.exe

Drops file in System32 directory 4 IoCs

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

System Location Discovery: System Language Discovery 1 TTPs 1 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

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{a5eaad64-2d62-72b7-3e73-2d6225ec5e4b}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{a5eaad64-2d62-72b7-3e73-2d6225ec5e4b}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{a5eaad64-2d62-72b7-3e73-2d6225ec5e4b}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{a5eaad64-2d62-72b7-3e73-2d6225ec5e4b}\InprocServer32\ = "C:\\Windows\\SysWow64\\bkf.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{a5eaad64-2d62-72b7-3e73-2d6225ec5e4b}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1296	rundll32.exe
1296	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1296	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1296	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1548 wrote to memory of 1296	1548	rundll32.exe	84
PID 1548 wrote to memory of 1296	1548	rundll32.exe	84
PID 1548 wrote to memory of 1296	1548	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\04653064620c0bae182596ac5495ea1b_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1548
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\04653064620c0bae182596ac5495ea1b_JaffaCakes118.dll,#1
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Loads dropped DLL
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1296

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\tcx.dll

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
memory/1296-0-0x0000000000401000-0x0000000000408000-memory.dmp

Filesize
28KB

Download
memory/1296-7-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1296-10-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1296-12-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download