73b2d2f0caa972984dbc38c16aa1adedab68b3971f8aa752355828c1faa30a53

General

Target

b8ffbfaf0c19ed0ee6ff197c42e47865_JaffaCakes118.exe
Size

77KB
MD5

b8ffbfaf0c19ed0ee6ff197c42e47865
SHA1

38819d7ad06cd8c22beffc5ee79bcb56cdc384de
SHA256

73b2d2f0caa972984dbc38c16aa1adedab68b3971f8aa752355828c1faa30a53
SHA512

d14f2ca6234b7e64c9f0f1ffaad04612a13bac6448b434ce36e2a8fbd8b9171e196fc520eb21af5cdb5e1ecad294fb1cc0781da2f5f55ca9b4ffc4d52c7015ea
SSDEEP

1536:ei9M/SEATV63VDpwm1f5MyKIU593RsA5kVfXPXy581U6GPEsl:eimETV6fwm1RKjswkVHP1U64Esl

Score

10^/10

discovery evasion persistence

Malware Config

Signatures

Modifies firewall policy service 3 TTPs 1 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\Microsoft Windows Hosting Service = "C:\\Users\\Admin\\AppData\\Local\\Temp\\csrssr.exe"	csrssr.exe

Deletes itself 1 IoCs

pid	Process
2844	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2768	csrssr.exe

Loads dropped DLL 2 IoCs

pid	Process
2936	b8ffbfaf0c19ed0ee6ff197c42e47865_JaffaCakes118.exe
2936	b8ffbfaf0c19ed0ee6ff197c42e47865_JaffaCakes118.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\Microsoft Windows Hosting Service = "C:\\Users\\Admin\\AppData\\Local\\Temp\\csrssr.exe"	csrssr.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	b8ffbfaf0c19ed0ee6ff197c42e47865_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2936 wrote to memory of 2844	2936	b8ffbfaf0c19ed0ee6ff197c42e47865_JaffaCakes118.exe	30
PID 2936 wrote to memory of 2844	2936	b8ffbfaf0c19ed0ee6ff197c42e47865_JaffaCakes118.exe	30
PID 2936 wrote to memory of 2844	2936	b8ffbfaf0c19ed0ee6ff197c42e47865_JaffaCakes118.exe	30
PID 2936 wrote to memory of 2844	2936	b8ffbfaf0c19ed0ee6ff197c42e47865_JaffaCakes118.exe	30
PID 2936 wrote to memory of 2768	2936	b8ffbfaf0c19ed0ee6ff197c42e47865_JaffaCakes118.exe	32
PID 2936 wrote to memory of 2768	2936	b8ffbfaf0c19ed0ee6ff197c42e47865_JaffaCakes118.exe	32
PID 2936 wrote to memory of 2768	2936	b8ffbfaf0c19ed0ee6ff197c42e47865_JaffaCakes118.exe	32
PID 2936 wrote to memory of 2768	2936	b8ffbfaf0c19ed0ee6ff197c42e47865_JaffaCakes118.exe	32

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Associations\LowRiskFileTypes = ".exe"	csrssr.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Associations	csrssr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Associations\DefaultFileTypeRisk = "808464432"	csrssr.exe

C:\Users\Admin\AppData\Local\Temp\b8ffbfaf0c19ed0ee6ff197c42e47865_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b8ffbfaf0c19ed0ee6ff197c42e47865_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2936
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\rm.bat" C:\Users\Admin\AppData\Local\Temp\b8ffbfaf0c19ed0ee6ff197c42e47865_JaffaCakes118.exe"
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2844
- C:\Users\Admin\AppData\Local\Temp\csrssr.exe
  "C:\Users\Admin\AppData\Local\Temp\csrssr.exe"
  2⤵
  - Modifies firewall policy service
  - Executes dropped EXE
  - Adds Run key to start application
  - System policy modification
  PID:2768

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

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

System Information Discovery

1

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\csrssr.exe

Filesize
77KB

MD5
b8ffbfaf0c19ed0ee6ff197c42e47865

SHA1
38819d7ad06cd8c22beffc5ee79bcb56cdc384de

SHA256
73b2d2f0caa972984dbc38c16aa1adedab68b3971f8aa752355828c1faa30a53

SHA512
d14f2ca6234b7e64c9f0f1ffaad04612a13bac6448b434ce36e2a8fbd8b9171e196fc520eb21af5cdb5e1ecad294fb1cc0781da2f5f55ca9b4ffc4d52c7015ea

Download Submit
C:\Users\Admin\AppData\Local\Temp\rm.bat

Filesize
243B

MD5
c2d5f80f7f874b29a206c9f5c3259bc0

SHA1
ffdb45a5d040352a748390d580decdba27e5214a

SHA256
5340bc4b84de1eadd0d57ce2182a1724ed83ef54cb5d76f165e128e750a806e5

SHA512
f4b3d938c4ac201a0f5c6cbf02910cd7cb611fb61d463fc07b74e9b3cf777a798b84108143a14b2073a70291a11d700c0e1b290d7135e7469942119e91b0c76c

Download Submit
memory/2768-22-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2936-0-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2936-21-0x00000000026E0000-0x0000000002700000-memory.dmp

Filesize
128KB

Download
memory/2936-20-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2936-23-0x00000000026E0000-0x0000000002700000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads