01b2f4f1d5e6a26fce491ed3572aa1445e8b0e7724afa792e079fcf36583b42f

General

Target

13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe
Size

8KB
MD5

13d738a6f601790d9e18f617e5fa9fd3
SHA1

c26fac83bd2a8e42e83618027c4ea5b191285414
SHA256

01b2f4f1d5e6a26fce491ed3572aa1445e8b0e7724afa792e079fcf36583b42f
SHA512

6a989a1c00ec4362e02d0d235ff596dc3feb0aad15f4df8bd3bed30fa6e37761a471d99560f68aa15b7b4839c9937469f56a7e0d9e435d7693ad48f9dfd610d8
SSDEEP

192:+4yrksjlqrlmv4u7XU2yGQn8kYNeVm05IjUxKiVhRh3B:VcqBm82yD8ktVmRiVhRVB

Score

10^/10

adware discovery persistence stealer upx

Malware Config

Signatures

Modifies WinLogon for persistence 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\Shell = "Explorer.exe"	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\drivers\spools.exe	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\drivers\spools.exe	13d738a6f601790d9e18f617e5fa9fd3_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"	13d738a6f601790d9e18f617e5fa9fd3_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:\\Users\\Admin\\cftmon.exe \"%1\" %*"	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe"	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe"	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe
Key deleted	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	reg.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"	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\userinit.exe	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1500-0-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral2/memory/1500-3-0x0000000000400000-0x000000000040F000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 5 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	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe

Modifies registry class 1 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Users\\Admin\\cftmon.exe \"%1\" %*"	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1500 wrote to memory of 1848	1500	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe	82
PID 1500 wrote to memory of 1848	1500	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe	82
PID 1500 wrote to memory of 1848	1500	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe	82
PID 1500 wrote to memory of 4800	1500	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe	83
PID 1500 wrote to memory of 4800	1500	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe	83
PID 1500 wrote to memory of 4800	1500	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe	83
PID 1500 wrote to memory of 3712	1500	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe	84
PID 1500 wrote to memory of 3712	1500	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe	84
PID 1500 wrote to memory of 3712	1500	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe	84
PID 1500 wrote to memory of 5072	1500	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe	85
PID 1500 wrote to memory of 5072	1500	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe	85
PID 1500 wrote to memory of 5072	1500	13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe	85

C:\Users\Admin\AppData\Local\Temp\13d738a6f601790d9e18f617e5fa9fd3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\13d738a6f601790d9e18f617e5fa9fd3_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
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1500
- C:\Windows\SysWOW64\reg.exe
  reg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects" /f
  2⤵
  - Installs/modifies Browser Helper Object
  - System Location Discovery: System Language Discovery
  PID:1848
- C:\Windows\SysWOW64\reg.exe
  reg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /f
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  PID:4800
- C:\Windows\SysWOW64\reg.exe
  reg delete "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /f
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  PID:3712
- C:\Windows\SysWOW64\reg.exe
  reg copy "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Terminal" /s /f
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5072

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1500-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/1500-3-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads