njrat | 3b9c2a7e03861bd5d8517b76cc36c790042f1ca6e8c663c694dc5ed842f66fb8

General

Target

JaffaCakes118_61e4d01fd25bad27e4c44cb7d58f00b0.exe
Size

40KB
MD5

61e4d01fd25bad27e4c44cb7d58f00b0
SHA1

84c980d9850a1d556ebe3e4785af60110e2cc529
SHA256

3b9c2a7e03861bd5d8517b76cc36c790042f1ca6e8c663c694dc5ed842f66fb8
SHA512

4fc85e2d2808d12ef1b3d51bd1a3b5f7b9ca245e9b1cd27703b99124e6110f24d2fb02e3daa6b136ace713f70ecea73f7402b239213df3c15c5a1d456b9eaca1
SSDEEP

384:r8aSyS9gB3Y1KIay2X8cLZI6XgxsGJVPpmRvR6JZlbw8hqIusZzZ37sBRrqaWATG:A589tXvRpcnuworK7s65vLDK

Score

10^/10

njrat tily discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

Tily

C2

tilybrasil.zapto.org:5050

Mutex

754e7a8d48f7f5caf366855bb6973558

Attributes

reg_key
754e7a8d48f7f5caf366855bb6973558
splitter
|'|'|

Signatures

Njrat family
njrat
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2948	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\754e7a8d48f7f5caf366855bb6973558.exe	chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\754e7a8d48f7f5caf366855bb6973558.exe	chrome.exe

Executes dropped EXE 1 IoCs

pid	Process
1716	chrome.exe

Loads dropped DLL 1 IoCs

pid	Process
2604	JaffaCakes118_61e4d01fd25bad27e4c44cb7d58f00b0.exe

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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\754e7a8d48f7f5caf366855bb6973558 = "\"C:\\ProgramData\\chrome.exe\" .."	chrome.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\754e7a8d48f7f5caf366855bb6973558 = "\"C:\\ProgramData\\chrome.exe\" .."	chrome.exe

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

System Information Discovery
T1082

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_61e4d01fd25bad27e4c44cb7d58f00b0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chrome.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	1716	chrome.exe
Token: 33	1716	chrome.exe
Token: SeIncBasePriorityPrivilege	1716	chrome.exe
Token: 33	1716	chrome.exe
Token: SeIncBasePriorityPrivilege	1716	chrome.exe
Token: 33	1716	chrome.exe
Token: SeIncBasePriorityPrivilege	1716	chrome.exe
Token: 33	1716	chrome.exe
Token: SeIncBasePriorityPrivilege	1716	chrome.exe
Token: 33	1716	chrome.exe
Token: SeIncBasePriorityPrivilege	1716	chrome.exe
Token: 33	1716	chrome.exe
Token: SeIncBasePriorityPrivilege	1716	chrome.exe
Token: 33	1716	chrome.exe
Token: SeIncBasePriorityPrivilege	1716	chrome.exe
Token: 33	1716	chrome.exe
Token: SeIncBasePriorityPrivilege	1716	chrome.exe
Token: 33	1716	chrome.exe
Token: SeIncBasePriorityPrivilege	1716	chrome.exe
Token: 33	1716	chrome.exe
Token: SeIncBasePriorityPrivilege	1716	chrome.exe
Token: 33	1716	chrome.exe
Token: SeIncBasePriorityPrivilege	1716	chrome.exe
Token: 33	1716	chrome.exe
Token: SeIncBasePriorityPrivilege	1716	chrome.exe
Token: 33	1716	chrome.exe
Token: SeIncBasePriorityPrivilege	1716	chrome.exe
Token: 33	1716	chrome.exe
Token: SeIncBasePriorityPrivilege	1716	chrome.exe
Token: 33	1716	chrome.exe
Token: SeIncBasePriorityPrivilege	1716	chrome.exe
Token: 33	1716	chrome.exe
Token: SeIncBasePriorityPrivilege	1716	chrome.exe
Token: 33	1716	chrome.exe
Token: SeIncBasePriorityPrivilege	1716	chrome.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2604 wrote to memory of 1716	2604	JaffaCakes118_61e4d01fd25bad27e4c44cb7d58f00b0.exe	29
PID 2604 wrote to memory of 1716	2604	JaffaCakes118_61e4d01fd25bad27e4c44cb7d58f00b0.exe	29
PID 2604 wrote to memory of 1716	2604	JaffaCakes118_61e4d01fd25bad27e4c44cb7d58f00b0.exe	29
PID 2604 wrote to memory of 1716	2604	JaffaCakes118_61e4d01fd25bad27e4c44cb7d58f00b0.exe	29
PID 1716 wrote to memory of 2948	1716	chrome.exe	30
PID 1716 wrote to memory of 2948	1716	chrome.exe	30
PID 1716 wrote to memory of 2948	1716	chrome.exe	30
PID 1716 wrote to memory of 2948	1716	chrome.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61e4d01fd25bad27e4c44cb7d58f00b0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61e4d01fd25bad27e4c44cb7d58f00b0.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2604
- C:\ProgramData\chrome.exe
  "C:\ProgramData\chrome.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1716
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\ProgramData\chrome.exe" "chrome.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2948

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

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

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

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 Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\ProgramData\chrome.exe

Filesize
40KB

MD5
61e4d01fd25bad27e4c44cb7d58f00b0

SHA1
84c980d9850a1d556ebe3e4785af60110e2cc529

SHA256
3b9c2a7e03861bd5d8517b76cc36c790042f1ca6e8c663c694dc5ed842f66fb8

SHA512
4fc85e2d2808d12ef1b3d51bd1a3b5f7b9ca245e9b1cd27703b99124e6110f24d2fb02e3daa6b136ace713f70ecea73f7402b239213df3c15c5a1d456b9eaca1

Download Submit
memory/1716-12-0x0000000074B30000-0x00000000750DB000-memory.dmp

Filesize
5.7MB

Download
memory/1716-13-0x0000000074B30000-0x00000000750DB000-memory.dmp

Filesize
5.7MB

Download
memory/1716-15-0x0000000074B30000-0x00000000750DB000-memory.dmp

Filesize
5.7MB

Download
memory/2604-0-0x0000000074B31000-0x0000000074B32000-memory.dmp

Filesize
4KB

Download
memory/2604-1-0x0000000074B30000-0x00000000750DB000-memory.dmp

Filesize
5.7MB

Download
memory/2604-2-0x0000000074B30000-0x00000000750DB000-memory.dmp

Filesize
5.7MB

Download
memory/2604-11-0x0000000074B30000-0x00000000750DB000-memory.dmp

Filesize
5.7MB

Download
memory/2604-10-0x0000000074B30000-0x00000000750DB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads