c3d36a684dc2ba196e2d748244d5ed42c8bbef87c87c73ec0bc70b67d4326b8d

General

Target

a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe
Size

135KB
MD5

a5474ce072de40b4afd050247b8d8d08
SHA1

d154d64781325fff1ab3a13dd322c36d95478276
SHA256

c3d36a684dc2ba196e2d748244d5ed42c8bbef87c87c73ec0bc70b67d4326b8d
SHA512

dce0fb2f989af38dc4b8f8eae641aa5e262848b4c0b79a079ea8fdcd09e4494ecd13ca3c1545677ae7143544cc4c9a93cb4a82fda0c995e2a1292219230748de
SSDEEP

1536:VXUq5TXHN9l0jZZ8zjQqBbI2SbyGTJnUpgGDBOfIO:VXx5TZ/bxGTJnUpgGFOfIO

Score

10^/10

discovery evasion persistence privilege_escalation 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\Userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\System32\\drivers\\winlogon.exe"	a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\winlogon = "C:\\Windows\\System32\\drivers\\winlogon.exe"	a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe
Key created	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\winlogon = "C:\\Windows\\System32\\drivers\\winlogon.exe"	a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\drivers\hhSGwIiCh.tmp	winlogon.exe
File opened for modification	C:\Windows\SysWOW64\drivers\winlogon.exe	a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2256	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
4980	winlogon.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4824-0-0x0000000000400000-0x0000000000424000-memory.dmp	upx
behavioral2/files/0x000b000000023444-6.dat	upx
behavioral2/memory/4980-24-0x0000000000400000-0x0000000000424000-memory.dmp	upx
behavioral2/memory/4824-25-0x0000000000400000-0x0000000000424000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "C:\\Windows\\System32\\drivers\\winlogon.exe"	a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\winlogon = "C:\\Windows\\System32\\drivers\\winlogon.exe"	a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlogon.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4824	a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe
4980	winlogon.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4824 wrote to memory of 2256	4824	a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe	84
PID 4824 wrote to memory of 2256	4824	a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe	84
PID 4824 wrote to memory of 2256	4824	a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe	84
PID 4824 wrote to memory of 4980	4824	a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe	85
PID 4824 wrote to memory of 4980	4824	a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe	85
PID 4824 wrote to memory of 4980	4824	a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe	85

C:\Users\Admin\AppData\Local\Temp\a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Adds policy Run key to start application
- Drops file in Drivers directory
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4824
- C:\Windows\SysWOW64\netsh.exe
  netsh firewall add allowedprogram "C:\Windows\System32\drivers\winlogon.exe" CityScape Enable
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2256
- C:\Windows\SysWOW64\drivers\winlogon.exe
  C:\Users\Admin\AppData\Local\Temp\a5474ce072de40b4afd050247b8d8d08_JaffaCakes118.exe
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4980

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

3

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

1

T1547.004

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

3

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

1

T1547.004

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

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:\Windows\SysWOW64\drivers\winlogon.exe

Filesize
135KB

MD5
dce4b3d9e61ae0bc511ff75d9b8cc645

SHA1
3116b3a8d2e2f8d6fc3d28592e134042e411de04

SHA256
f859146508fd03bb5d3add242735d6826b4d2fb1b739830a68a7cd23113db389

SHA512
9693a4c56ebc7bb4fd93d686d11562eb21c97f041fbb08db3d236414e913d777e79b4a7492907017133a18239f1d2cabe02e6b789ab4064159f3221fc8180d40

Download Submit
memory/4824-0-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4824-25-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4980-24-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads