228cc51ec3ccb91194abaf62beef8f1147f4d95f944bfeda63416fef3ad35c36

General

Target

d63b36a3b892468016188086637ae3dc_JaffaCakes118.exe
Size

9.4MB
MD5

d63b36a3b892468016188086637ae3dc
SHA1

e67ced635461044c922293226027e7ce0ea8ba8a
SHA256

228cc51ec3ccb91194abaf62beef8f1147f4d95f944bfeda63416fef3ad35c36
SHA512

6948cc94058d9b9d867c73642cd00408e8152b88fe28f5b3ae46c6c03e770f1a701487cf7f7f17cbecc7ba3c478a811f830bec644789f67f8ea4c0c000601218
SSDEEP

6144:qTcHRfVqHHHfXqUESZupBY00XbUPwun3PMOVDc7w9cAWOcppyjhehGcmTEknARFC:qwTOfLEYupBsyn3Vc7TSheXm4knAPV

Score

10^/10

discovery persistence ransomware 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 \"C:\\Program Files (x86)\\Common Files\\winlogin.exe\""	winlogin.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	winlogin.exe

Executes dropped EXE 1 IoCs

pid	Process
2060	winlogin.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3684-1-0x0000000000400000-0x0000000000D71000-memory.dmp	upx
behavioral2/memory/3684-2-0x0000000000400000-0x0000000000D71000-memory.dmp	upx
behavioral2/memory/2060-8-0x0000000000400000-0x0000000000D71000-memory.dmp	upx
behavioral2/memory/2060-10-0x0000000000400000-0x0000000000D71000-memory.dmp	upx
behavioral2/memory/3684-12-0x0000000000400000-0x0000000000D71000-memory.dmp	upx
behavioral2/memory/2060-13-0x0000000000400000-0x0000000000D71000-memory.dmp	upx

Adds Run key to start application 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\Run\winlogin = "\"C:\\Program Files (x86)\\Common Files\\winlogin.exe\""	winlogin.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\Desktop\Wallpaper = "C:\\Program Files\\Common Files\\fon.jpg"	winlogin.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Common Files\winlogin.exe	d63b36a3b892468016188086637ae3dc_JaffaCakes118.exe
File opened for modification	C:\Program Files (x86)\Common Files\winlogin.exe	d63b36a3b892468016188086637ae3dc_JaffaCakes118.exe
File created	C:\Program Files (x86)\Common Files\fon.jpg	winlogin.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	d63b36a3b892468016188086637ae3dc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlogin.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1348	taskkill.exe

Modifies Control Panel 4 IoCs

evasion

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\Desktop\Pattern	winlogin.exe
Key created	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\Desktop	winlogin.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\Desktop\TileWallpaper = "0"	winlogin.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\Desktop\WallpaperStyle = "10"	winlogin.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Software\Microsoft\Internet Explorer\Desktop\General	winlogin.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Internet Explorer\Desktop\General\WallpaperSource = "C:\\Program Files\\Common Files\\fon.jpg"	winlogin.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1348	taskkill.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2060	winlogin.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2060	winlogin.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3684 wrote to memory of 2060	3684	d63b36a3b892468016188086637ae3dc_JaffaCakes118.exe	83
PID 3684 wrote to memory of 2060	3684	d63b36a3b892468016188086637ae3dc_JaffaCakes118.exe	83
PID 3684 wrote to memory of 2060	3684	d63b36a3b892468016188086637ae3dc_JaffaCakes118.exe	83
PID 2060 wrote to memory of 1348	2060	winlogin.exe	85
PID 2060 wrote to memory of 1348	2060	winlogin.exe	85
PID 2060 wrote to memory of 1348	2060	winlogin.exe	85

C:\Users\Admin\AppData\Local\Temp\d63b36a3b892468016188086637ae3dc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d63b36a3b892468016188086637ae3dc_JaffaCakes118.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3684
- C:\Program Files (x86)\Common Files\winlogin.exe
  "C:\Program Files (x86)\Common Files\winlogin.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Sets desktop wallpaper using registry
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Modifies Control Panel
  - Modifies Internet Explorer settings
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2060
- - C:\Windows\SysWOW64\taskkill.exe
    "C:\Windows\System32\taskkill.exe" /f /im explorer.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1348

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

4

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

1

T1491

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Downloads

C:\Program Files (x86)\Common Files\winlogin.exe

Filesize
9.4MB

MD5
d63b36a3b892468016188086637ae3dc

SHA1
e67ced635461044c922293226027e7ce0ea8ba8a

SHA256
228cc51ec3ccb91194abaf62beef8f1147f4d95f944bfeda63416fef3ad35c36

SHA512
6948cc94058d9b9d867c73642cd00408e8152b88fe28f5b3ae46c6c03e770f1a701487cf7f7f17cbecc7ba3c478a811f830bec644789f67f8ea4c0c000601218

Download Submit
memory/2060-7-0x0000000000400000-0x0000000000D71000-memory.dmp

Filesize
9.4MB

Download
memory/2060-8-0x0000000000400000-0x0000000000D71000-memory.dmp

Filesize
9.4MB

Download
memory/2060-10-0x0000000000400000-0x0000000000D71000-memory.dmp

Filesize
9.4MB

Download
memory/2060-13-0x0000000000400000-0x0000000000D71000-memory.dmp

Filesize
9.4MB

Download
memory/3684-0-0x0000000000FE0000-0x0000000000FE2000-memory.dmp

Filesize
8KB

Download
memory/3684-1-0x0000000000400000-0x0000000000D71000-memory.dmp

Filesize
9.4MB

Download
memory/3684-2-0x0000000000400000-0x0000000000D71000-memory.dmp

Filesize
9.4MB

Download
memory/3684-12-0x0000000000400000-0x0000000000D71000-memory.dmp

Filesize
9.4MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads