5636ea8ba3dc2b5778fb9582a7bac8d15402243476cedad2be814272fcbde418

General

Target

b2d597e090ca0cb921a2148fe7f746ab_JaffaCakes118.exe
Size

312KB
MD5

b2d597e090ca0cb921a2148fe7f746ab
SHA1

1eadeee9fffdb5483db8b3b1d2d8e78ad3d0f1ac
SHA256

5636ea8ba3dc2b5778fb9582a7bac8d15402243476cedad2be814272fcbde418
SHA512

920bf3fdaf9c4a6ab15036d6d1d021dac2bbafa3f040d7acbeee69f485a3579725f115039b5af6fe2d8f5e41d967e90222484d69c80de57f87ff9cacbf500b05
SSDEEP

6144:kk7tvTlIpr1f+XqO5aOmSGFDbeOjLPmUSgF:r1TlIB1f+55SpNPmUHF

Score

10^/10

discovery evasion persistence

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	b2d597e090ca0cb921a2148fe7f746ab_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	letil.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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	b2d597e090ca0cb921a2148fe7f746ab_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
4968	letil.exe

Adds Run key to start application 2 TTPs 14 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\letil = "C:\\Users\\Admin\\letil.exe /j"	letil.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\letil = "C:\\Users\\Admin\\letil.exe /p"	letil.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\letil = "C:\\Users\\Admin\\letil.exe /r"	letil.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\letil = "C:\\Users\\Admin\\letil.exe /t"	letil.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\letil = "C:\\Users\\Admin\\letil.exe /i"	letil.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\letil = "C:\\Users\\Admin\\letil.exe /x"	letil.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\letil = "C:\\Users\\Admin\\letil.exe /h"	b2d597e090ca0cb921a2148fe7f746ab_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\letil = "C:\\Users\\Admin\\letil.exe /u"	letil.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\letil = "C:\\Users\\Admin\\letil.exe /h"	letil.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\letil = "C:\\Users\\Admin\\letil.exe /n"	letil.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\letil = "C:\\Users\\Admin\\letil.exe /v"	letil.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\letil = "C:\\Users\\Admin\\letil.exe /b"	letil.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\letil = "C:\\Users\\Admin\\letil.exe /l"	letil.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\letil = "C:\\Users\\Admin\\letil.exe /o"	letil.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 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	b2d597e090ca0cb921a2148fe7f746ab_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	letil.exe

Suspicious behavior: EnumeratesProcesses 40 IoCs

pid	Process
1048	b2d597e090ca0cb921a2148fe7f746ab_JaffaCakes118.exe
1048	b2d597e090ca0cb921a2148fe7f746ab_JaffaCakes118.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe
4968	letil.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1048	b2d597e090ca0cb921a2148fe7f746ab_JaffaCakes118.exe
4968	letil.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1048 wrote to memory of 4968	1048	b2d597e090ca0cb921a2148fe7f746ab_JaffaCakes118.exe	99
PID 1048 wrote to memory of 4968	1048	b2d597e090ca0cb921a2148fe7f746ab_JaffaCakes118.exe	99
PID 1048 wrote to memory of 4968	1048	b2d597e090ca0cb921a2148fe7f746ab_JaffaCakes118.exe	99

C:\Users\Admin\AppData\Local\Temp\b2d597e090ca0cb921a2148fe7f746ab_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b2d597e090ca0cb921a2148fe7f746ab_JaffaCakes118.exe"
1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Users\Admin\letil.exe
  "C:\Users\Admin\letil.exe"
  2⤵
  - Modifies visiblity of hidden/system files in Explorer
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:4968

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Hide Artifacts

1

T1564

Hidden Files and Directories

Modify Registry

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

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Downloads

C:\Users\Admin\letil.exe

Filesize
312KB

MD5
1824f0f9044520912d04f83d21c0e50a

SHA1
455e7aad419810f4b00290efb000c10d9cdd8288

SHA256
35f10825afccb3ea3207eecedd3e136e011dbc0d98733d1154f55093ab541071

SHA512
a1f7341139e080fa8288b94331d7cf8131677f18aff7ce36b46b9ca9857ea35f866fcd5aefec1de14426b7a66409255951f8f9c876e0b1e3122b990d7a3e4e00

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads