fca10956890bd68948b39ddf0a84a3784468a0f738878606bba0ee3a2755c15c

Analysis

max time kernel
140s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
20-06-2024 13:31

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General

Target

0671b2e9a8db09eeaaa02c92b92eb0d0_JaffaCakes118.dll
Size

236KB
MD5

0671b2e9a8db09eeaaa02c92b92eb0d0
SHA1

4d084479ccac3475af3ed43403e382453df87311
SHA256

fca10956890bd68948b39ddf0a84a3784468a0f738878606bba0ee3a2755c15c
SHA512

a9a1a6313b4c01775fce3389935a852bbaa48a1153d185ca4819a487e9af8b0e103ea19a7a85c319d83d927feebf22c5002ff63cd335029f090997faf446d79c
SSDEEP

3072:SeqmgHwlaazN9U3J+P0wFp+bLrt2wkkIA:+Qj9U3jwO3rt5/

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\pmw = "{fa079d47-728f-c7d4-8390-728f15cf62c5}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2576	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{fa079d47-728f-c7d4-8390-728f15cf62c5}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{fa079d47-728f-c7d4-8390-728f15cf62c5}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{fa079d47-728f-c7d4-8390-728f15cf62c5}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{fa079d47-728f-c7d4-8390-728f15cf62c5}\InprocServer32\ = "C:\\Windows\\SysWow64\\khr.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{fa079d47-728f-c7d4-8390-728f15cf62c5}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2576	rundll32.exe
2576	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2576	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2576	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5000 wrote to memory of 2576	5000	rundll32.exe	83
PID 5000 wrote to memory of 2576	5000	rundll32.exe	83
PID 5000 wrote to memory of 2576	5000	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0671b2e9a8db09eeaaa02c92b92eb0d0_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5000
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\0671b2e9a8db09eeaaa02c92b92eb0d0_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:2576

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

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Downloads

C:\Windows\SysWOW64\czj.dll

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
memory/2576-0-0x0000000000401000-0x0000000000408000-memory.dmp

Filesize
28KB

Download
memory/2576-7-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2576-10-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download