b7f599591f3ed049ad9ff9bda207db9a9b153e4906a177cd92ced70a687089ea

General

Target

b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe
Size

14KB
MD5

b3d29ddfe886d03db79136357770f5a4
SHA1

f45df5d205c8515f8c5648f3632901fedabd6420
SHA256

b7f599591f3ed049ad9ff9bda207db9a9b153e4906a177cd92ced70a687089ea
SHA512

d5b209f183c3941c550b15c77ff58cab7accc9be21638af9daa44abaa0fb9190a2c5f5d05e0dac73b5d62bd4866c2efc1f4ca690983b5b5d95417cb97110df4e
SSDEEP

384:MkmJPIC47SMsfxwzeRn4QEQHMLm8mnF9WU6/zWn:AJN47SikyymdrU6in

Score

10^/10

discovery persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 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\ShellServiceObjectDelayLoad\tkuufuot.dll = "{E0F3526A-4165-4589-80CD-50B6FBAC3BDA}"	b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2784	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
2308	b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\tkuufuot.tmp	b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\tkuufuot.tmp	b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\tkuufuot.nls	b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E0F3526A-4165-4589-80CD-50B6FBAC3BDA}	b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E0F3526A-4165-4589-80CD-50B6FBAC3BDA}\InProcServer32	b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E0F3526A-4165-4589-80CD-50B6FBAC3BDA}\InProcServer32\ = "C:\\Windows\\SysWow64\\tkuufuot.dll"	b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E0F3526A-4165-4589-80CD-50B6FBAC3BDA}\InProcServer32\ThreadingModel = "Apartment"	b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2308	b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2308	b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe
2308	b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe
2308	b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2308 wrote to memory of 2784	2308	b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe	31
PID 2308 wrote to memory of 2784	2308	b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe	31
PID 2308 wrote to memory of 2784	2308	b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe	31
PID 2308 wrote to memory of 2784	2308	b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b3d29ddfe886d03db79136357770f5a4_JaffaCakes118.exe"
1⤵
- 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 SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2308
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\6097.tmp.bat
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\6097.tmp.bat

Filesize
207B

MD5
2448394ed7ed1f78494ca56166eb09a5

SHA1
234767563ce68ae485aa008c88da959d724040df

SHA256
62315966f124fb064b459b3c2a3ba5ca52ca1abb0096f71fb1e1d7a5e6ed0399

SHA512
cc66ff45af23e55c1bddef47f4c47b69ed76d8187d577277d064ce99ac7f57ad9b6055d80aeefbb8e351aaf8008ab199d382f6a29e3cae708f518e99c3c57173

Download Submit
C:\Windows\SysWOW64\tkuufuot.tmp

Filesize
2.2MB

MD5
1179cefdd5d5e933247b99e782fdb1f6

SHA1
306a776cc323a9ca06fc5aa408fcda3c402f4be9

SHA256
3bbeca8fc9013c6813e731138eacaf5be605e19ebf169dbc954378e45904de30

SHA512
eec4337f11606d9976115c62c8a3afa6be607e21389c76f2f69ad7dad31512ee455170792ea191bd8c97150d341070cea2dff843e770b704bf6fe317d46c2a12

Download Submit
memory/2308-12-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download
memory/2308-21-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads