35fdf2f8ac15de0ec12fa3e984cf00002f9d8d715a70b2d2733c731a666de8b1

General

Target

JaffaCakes118_8ad77f05d9955615afe4b02d0ba5e035.exe
Size

58KB
MD5

8ad77f05d9955615afe4b02d0ba5e035
SHA1

92f10454b0d9c262fe10eff393ded6c7dd90d64e
SHA256

35fdf2f8ac15de0ec12fa3e984cf00002f9d8d715a70b2d2733c731a666de8b1
SHA512

c7778dc9fbea225741eddf59f8e35b43671b304e3f4b9734df569adc28e048288aa1b2f4b5466b07785980627f4aa2a60ae672182f29dc4f5d1583c52d45fd3d
SSDEEP

768:wYqoyqE5qrSJI1riOVDr+nrSQtS7O+McpL1dS+BoPYEE0+RKLgpGy8kTy5hAW4FT:DHyJuiMYUOdSRdS3iXpH4hEO3

Score

7^/10

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
3604	JaffaCakes118_8ad77f05d9955615afe4b02d0ba5e035.exe
4168	rundll32.exe

Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{D87B6A72-6E1B-A77E-32F2-DD69685E42B6}	rundll32.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\nciihs.dat	rundll32.exe
File created	C:\Windows\SysWOW64\nciihs.dat	rundll32.exe
File created	C:\Windows\SysWOW64\nciihs.dll	rundll32.exe
File created	C:\Windows\SysWOW64\KBDTUT.dat	rundll32.exe
File created	C:\Windows\SysWOW64\KBDLN.dat	rundll32.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3604-0-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/memory/3604-8-0x0000000000400000-0x0000000000422000-memory.dmp	upx

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	JaffaCakes118_8ad77f05d9955615afe4b02d0ba5e035.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies registry class 10 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D9ADCF0D-5165-3574-8C5F-529DAAF48DAC}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D9ADCF0D-5165-3574-8C5F-529DAAF48DAC}\ = "nciihs"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D9ADCF0D-5165-3574-8C5F-529DAAF48DAC}\InprocServer32	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D87B6A72-6E1B-A77E-32F2-DD69685E42B6}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D87B6A72-6E1B-A77E-32F2-DD69685E42B6}\ = "nciihs"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D87B6A72-6E1B-A77E-32F2-DD69685E42B6}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D9ADCF0D-5165-3574-8C5F-529DAAF48DAC}\InprocServer32\ = "C:\\Windows\\SysWow64\\nciihs.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D9ADCF0D-5165-3574-8C5F-529DAAF48DAC}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D87B6A72-6E1B-A77E-32F2-DD69685E42B6}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D87B6A72-6E1B-A77E-32F2-DD69685E42B6}\InprocServer32\ = "C:\\Windows\\SysWow64\\nciihs.dll"	rundll32.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
4168	rundll32.exe
4168	rundll32.exe
4168	rundll32.exe
4168	rundll32.exe
4168	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3604 wrote to memory of 4168	3604	JaffaCakes118_8ad77f05d9955615afe4b02d0ba5e035.exe	87
PID 3604 wrote to memory of 4168	3604	JaffaCakes118_8ad77f05d9955615afe4b02d0ba5e035.exe	87
PID 3604 wrote to memory of 4168	3604	JaffaCakes118_8ad77f05d9955615afe4b02d0ba5e035.exe	87

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8ad77f05d9955615afe4b02d0ba5e035.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8ad77f05d9955615afe4b02d0ba5e035.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3604
- C:\Windows\SysWOW64\rundll32.exe
  rundll32 C:\Users\Admin\AppData\Local\Temp\fsbcjql.dll,Start 1
  2⤵
  - Loads dropped DLL
  - Installs/modifies Browser Helper Object
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of SetWindowsHookEx
  PID:4168

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Browser Extensions

1

T1176

Privilege Escalation

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\fsbcjql.dll

Filesize
109KB

MD5
dfbba7c331acd5d59b32997f808c03ea

SHA1
e967171ac517a98fd8ae9500aacba025453f3243

SHA256
82757984293fccc9f15a92bfba46eb6924c5f4ddc7c29bcc2bd64643932f45e1

SHA512
ffaf7abbdd729f434c4164b81370fcc385c098752f443f7df0cbfba78af856d9e2950ee86d40af3a48f91b5b431e36645e7ff1f1824a9831614f369a359519a9

Download Submit
memory/3604-0-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/3604-8-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download

Analysis

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