14e800e579c42b3905e0a7f6bca758abaa62850f53950f27b36c79d018ad51ba

General

Target
ee932c34ead4e744f303f29f102e61a1_JaffaCakes118.exe
Size 33KB
Sample240411-29wfcagc77
SHA256 14e800e579c42b3905e0a7f6bca758abaa62850f53950f27b36c79d018ad51ba
MD5 ee932c34ead4e744f303f29f102e61a1
SHA1 a5445a1b9367fe25fd9b55ed5303caf0caf864df
SHA512 bd3929402bd2b2d07029d853fdbc2d2c9b2d407e000a081bd218f7ecd547128b085e8380b52aad2170f7edc2af29cadf339c0dd2d55c5dbfa83d2f65789a0c7c
SSDEEP 384:63VEI7h70BHjPLydWwXTCxliiT46XEd0vBnwB3TS8qR9OoKQ0Mu/poxIwZwWpS4i:9Cu9yLTCWzdMw41RcoKxXYZXO
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

adware persistence stealer upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe"	ee932c34ead4e744f303f29f102e61a1_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,"	ee932c34ead4e744f303f29f102e61a1_JaffaCakes118.exe

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\drivers\spools.exe	ee932c34ead4e744f303f29f102e61a1_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\drivers\spools.exe	ee932c34ead4e744f303f29f102e61a1_JaffaCakes118.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Schedule\ImagePath = "C:\\Windows\\system32\\drivers\\spools.exe"	ee932c34ead4e744f303f29f102e61a1_JaffaCakes118.exe

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*"	ee932c34ead4e744f303f29f102e61a1_JaffaCakes118.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5012-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/files/0x00090000000224f7-5.dat	upx
behavioral2/memory/5012-14-0x0000000000400000-0x000000000040E000-memory.dmp	upx

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	ee932c34ead4e744f303f29f102e61a1_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe"	ee932c34ead4e744f303f29f102e61a1_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	ee932c34ead4e744f303f29f102e61a1_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe"	ee932c34ead4e744f303f29f102e61a1_JaffaCakes118.exe

Installs/modifies Browser Helper Object 2 TTPs 3 IoCs

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

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects	reg.exe

Modifies WinLogon 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe"	ee932c34ead4e744f303f29f102e61a1_JaffaCakes118.exe

Modifies registry class 1 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*"	ee932c34ead4e744f303f29f102e61a1_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5012 wrote to memory of 724	5012	ee932c34ead4e744f303f29f102e61a1_JaffaCakes118.exe	86
PID 5012 wrote to memory of 724	5012	ee932c34ead4e744f303f29f102e61a1_JaffaCakes118.exe	86
PID 5012 wrote to memory of 724	5012	ee932c34ead4e744f303f29f102e61a1_JaffaCakes118.exe	86

C:\Users\Admin\AppData\Local\Temp\ee932c34ead4e744f303f29f102e61a1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ee932c34ead4e744f303f29f102e61a1_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Drivers directory
- Sets service image path in registry
- Modifies system executable filetype association
- Adds Run key to start application
- Modifies WinLogon
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:5012
- C:\Windows\SysWOW64\reg.exe
  reg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects" /f
  2⤵
  - Installs/modifies Browser Helper Object
  PID:724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

4

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

Browser Extensions

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Privilege Escalation

Boot or Logon Autostart Execution

4

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

2

T1547.004

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Defense Evasion

Modify Registry

6

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

spools.exe

Path C:\Windows\SysWOW64\drivers\spools.exe
Size 51KB
SHA256 edc25e2483e0efb072ede11f4b150e20ea1ae25aa1506b735baa705c2c5e5a33
MD5 475b0c3696aeb61a813158ddc16620c3
SHA1 5c4fa51b72af63f78402e627dd47b4229518383f
SHA512 a40d84ebeb19b999b0d50558ee24cd26769fbc59443d6a13730132b7df8febb3504a0431fc83af791913f55fe57537077d9a4da2ddff3b32571fa761539f67ab
SSDEEP 768:9Cu9yLTCWzdMw41RcoKxXYZX1Y/0GbTAhFDzUP0rb/So:EuoTCwywoKxXGY/LbTAhFDz80HSo
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/5012-0-0x0000000000400000-0x000000000040E000-memory.dmp

Download

memory/5012-14-0x0000000000400000-0x000000000040E000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads