ca6c591318dbbd36b8c994df6e860ea608e6755c40a23c377fc5f2c6b0719656

General

Target

266df457680dbb2703b81c68ae19769a_JaffaCakes118.exe
Size

135KB
MD5

266df457680dbb2703b81c68ae19769a
SHA1

fc830bbe22a2cc47c4c9dd9519496d4fe9f6ca71
SHA256

ca6c591318dbbd36b8c994df6e860ea608e6755c40a23c377fc5f2c6b0719656
SHA512

fa3d0ab60d597b6c673fbde149df21498898e52ad9261504d9a7725627bb72f39f2f912cd6fc616238ab1aa191cf98f70f1fda1b5c8bde3bc2c0286de581d95f
SSDEEP

3072:fYirQae1xlrVwqNAd8f7IpX+/GDCypO0Fy9:fXQaKxIqNAd8DIpX++uypO0FO

Score

7^/10

discovery persistence upx

Malware Config

Signatures

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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	266df457680dbb2703b81c68ae19769a_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
5028	mmtask0.exe
2336	mmtask1.exe

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\explorer = "C:\\Windows\\system32\\explorer.exe"	mmtask0.exe

Modifies WinLogon 2 TTPs 13 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\Notify\explorer\Startup = "WLEStartup"	mmtask0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\explorer\Unlock = "WLEUnlock"	mmtask0.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify	mmtask0.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\explorer\Impersonate = "0"	mmtask0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\explorer\Lock = "WLELock"	mmtask0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\explorer\Logoff = "WLELogoff"	mmtask0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\explorer\Shutdown = "WLEShutdown"	mmtask0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\explorer\StopScreenSaver = "WLEStopScreenSaver"	mmtask0.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\explorer	mmtask0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\explorer\DllName = "explorer.dll"	mmtask0.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\explorer\Asynchronous = "0"	mmtask0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\explorer\Logon = "WLELogon"	mmtask0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\explorer\StartScreenSaver = "WLEStartScreenSaver"	mmtask0.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\explorer.exe	mmtask0.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3296-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/memory/3296-21-0x0000000000400000-0x000000000040A000-memory.dmp	upx

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 4 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	266df457680dbb2703b81c68ae19769a_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mmtask0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mmtask1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000_Classes\Local Settings	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2336	mmtask1.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3296 wrote to memory of 5028	3296	266df457680dbb2703b81c68ae19769a_JaffaCakes118.exe	86
PID 3296 wrote to memory of 5028	3296	266df457680dbb2703b81c68ae19769a_JaffaCakes118.exe	86
PID 3296 wrote to memory of 5028	3296	266df457680dbb2703b81c68ae19769a_JaffaCakes118.exe	86
PID 3296 wrote to memory of 2336	3296	266df457680dbb2703b81c68ae19769a_JaffaCakes118.exe	87
PID 3296 wrote to memory of 2336	3296	266df457680dbb2703b81c68ae19769a_JaffaCakes118.exe	87
PID 3296 wrote to memory of 2336	3296	266df457680dbb2703b81c68ae19769a_JaffaCakes118.exe	87
PID 5028 wrote to memory of 4548	5028	mmtask0.exe	88
PID 5028 wrote to memory of 4548	5028	mmtask0.exe	88
PID 5028 wrote to memory of 4548	5028	mmtask0.exe	88

C:\Users\Admin\AppData\Local\Temp\266df457680dbb2703b81c68ae19769a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\266df457680dbb2703b81c68ae19769a_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3296
- C:\Users\Admin\AppData\Local\Temp\mmtask0.exe
  "C:\Users\Admin\AppData\Local\Temp\mmtask0.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Modifies WinLogon
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5028
- - C:\Windows\SysWOW64\explorer.exe
    C:\Windows\system32\explorer.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    PID:4548
- C:\Users\Admin\AppData\Local\Temp\mmtask1.exe
  "C:\Users\Admin\AppData\Local\Temp\mmtask1.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2336

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

2

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\mmtask0.exe

Filesize
43KB

MD5
8c013abdafa94cbe994f89e5cf4f305a

SHA1
8bf39c61ae43813f8d9a50127f227282415e23cc

SHA256
0f5dfbef0841983ba865c5e0b8d145b39d2001152416c800e916dc2d06da5960

SHA512
cc7735a34f014dd99ab7a7646b57478b9862d13ff7e97660e2f026793a2f3d9ca65e3ff07fc51d681d848cbf6a3c2bcd6aa9093399125fcdd7010073a7206c2f

Download Submit
C:\Users\Admin\AppData\Local\Temp\mmtask1.exe

Filesize
80KB

MD5
83dc2617f82f6066dace3bafea4c9471

SHA1
131aeb2e3b4b38a038ee046337ced57d91e714ce

SHA256
bfa542cca1fbadf9ec4b5a268302152b0cc9dededadb3f067001c725207d8821

SHA512
3ce9e0f8bc389dbf32caefa5dcf42afbd126cdd380563a7b63d3c11fa06c8a16bfc60046984dcac0d2bd4bdbc4d46d7b8bfcd383db273ac7adb858d7782cd487

Download Submit
memory/3296-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/3296-21-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads