40940802a33f430a6782bbe26ee99f7bade77e5a90293c4e41cfe1ba23397c85

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24/06/2024, 07:36

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General

Target

07387d16621c17a68d3695d4fade8892_JaffaCakes118.dll
Size

236KB
MD5

07387d16621c17a68d3695d4fade8892
SHA1

3fb4853997311d54baba46897b0b792ad5677aae
SHA256

40940802a33f430a6782bbe26ee99f7bade77e5a90293c4e41cfe1ba23397c85
SHA512

a077481b511ea006276252f9975fb5fa949fe29cd09ffb3952f2cf9c0720b3d9a5357ec892463e5c2269b8c80fac642d53f772e1c42b0ac935494f8e4b71b510
SSDEEP

3072:SeqmgHwlaazN9U3J+P0wFp+bLrt2wkkIj:+Qj9U3jwO3rt5o

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\exkrralzw = "{6f817e59-e709-3c5e-f81a-e709f6d10d68}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1180	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6f817e59-e709-3c5e-f81a-e709f6d10d68}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6f817e59-e709-3c5e-f81a-e709f6d10d68}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6f817e59-e709-3c5e-f81a-e709f6d10d68}\InprocServer32\ = "C:\\Windows\\SysWow64\\zsfmmvgur.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6f817e59-e709-3c5e-f81a-e709f6d10d68}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6f817e59-e709-3c5e-f81a-e709f6d10d68}	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1180	rundll32.exe
1180	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1180	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1180	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1408 wrote to memory of 1180	1408	rundll32.exe	80
PID 1408 wrote to memory of 1180	1408	rundll32.exe	80
PID 1408 wrote to memory of 1180	1408	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\07387d16621c17a68d3695d4fade8892_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1408
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\07387d16621c17a68d3695d4fade8892_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:1180

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\rkxeenymj.dll

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
memory/1180-0-0x0000000000401000-0x0000000000408000-memory.dmp

Filesize
28KB

Download
memory/1180-7-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1180-8-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1180-11-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download