942c176ed1724784600ee87fd55a27e08f1202e584194f3b374c102492d5250c

Analysis

max time kernel
136s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
23/06/2024, 22:34

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General

Target

031534f957de7c66977e8251158f920b_JaffaCakes118.dll
Size

229KB
MD5

031534f957de7c66977e8251158f920b
SHA1

3b4dfd9415997917f7de5a5a2ab66383508ab05a
SHA256

942c176ed1724784600ee87fd55a27e08f1202e584194f3b374c102492d5250c
SHA512

052d19d84aea5b7d0c9b150044f72b83c999539cb3368cfb47787275a72df7cccecc7692cc1be3ee3dfd9e8669e23cd3ed33ddc0db7462a8d9c892a1dc74ba04
SSDEEP

1536:e1fHU9m5Wk74pyZDwOR7U7KB5heRavW5adgk6lB5FCQ0WlGUGwTwk9:uH0qLcpyh7UGztu5dlL4R6Twk9

Score

10^/10

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\nwnwk = "{dc5a88f2-54d2-a927-65e3-54d2007a3ae4}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1256	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{dc5a88f2-54d2-a927-65e3-54d2007a3ae4}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{dc5a88f2-54d2-a927-65e3-54d2007a3ae4}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{dc5a88f2-54d2-a927-65e3-54d2007a3ae4}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{dc5a88f2-54d2-a927-65e3-54d2007a3ae4}\InprocServer32\ = "C:\\Windows\\SysWow64\\irirf.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{dc5a88f2-54d2-a927-65e3-54d2007a3ae4}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1256	rundll32.exe
1256	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1256	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1256	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 228 wrote to memory of 1256	228	rundll32.exe	83
PID 228 wrote to memory of 1256	228	rundll32.exe	83
PID 228 wrote to memory of 1256	228	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\031534f957de7c66977e8251158f920b_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:228
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\031534f957de7c66977e8251158f920b_JaffaCakes118.dll,#1
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Loads dropped DLL
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1256

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\ajajx.dll

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
memory/1256-0-0x0000000002220000-0x0000000002261000-memory.dmp

Filesize
260KB

Download
memory/1256-1-0x0000000002221000-0x0000000002228000-memory.dmp

Filesize
28KB

Download
memory/1256-8-0x0000000002220000-0x0000000002261000-memory.dmp

Filesize
260KB

Download
memory/1256-9-0x0000000002220000-0x0000000002261000-memory.dmp

Filesize
260KB

Download
memory/1256-13-0x0000000002220000-0x0000000002261000-memory.dmp

Filesize
260KB

Download