njrat | 29f8c93f21a18e330efa775ee246240a9733b77d7e18536f09784042807ee923

General

Target

JaffaCakes118_76cea7a749931e08fbd7653b5a508ba0.exe
Size

621KB
MD5

76cea7a749931e08fbd7653b5a508ba0
SHA1

e00319cf77e9a3ef06f3a8c17f5a4c6b2b202635
SHA256

29f8c93f21a18e330efa775ee246240a9733b77d7e18536f09784042807ee923
SHA512

bcc4313cfd9335f5f4b22fa48a9190463e8fb89e33b728a324882c0639310cc518a9086d9a44645002442739425ec42c2093ce4901b3e8f24678d60610c9e60f
SSDEEP

12288:pW4dm3jps4Gg0I8jJdrA/K8i5z4gcOv/xGrHzHiTZH/svVU+:KjpsdI4/rhX4gLv/xGXCTZH/sq+

Score

10^/10

njrat discovery evasion persistence privilege_escalation trojan

Malware Config

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
2876	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
1712	server.exe

Loads dropped DLL 1 IoCs

pid	Process
1692	JaffaCakes118_76cea7a749931e08fbd7653b5a508ba0.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\b644c8acdfbc8f6fea9078ad31527136 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\b644c8acdfbc8f6fea9078ad31527136 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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_76cea7a749931e08fbd7653b5a508ba0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	1712	server.exe
Token: 33	1712	server.exe
Token: SeIncBasePriorityPrivilege	1712	server.exe
Token: 33	1712	server.exe
Token: SeIncBasePriorityPrivilege	1712	server.exe
Token: 33	1712	server.exe
Token: SeIncBasePriorityPrivilege	1712	server.exe
Token: 33	1712	server.exe
Token: SeIncBasePriorityPrivilege	1712	server.exe
Token: 33	1712	server.exe
Token: SeIncBasePriorityPrivilege	1712	server.exe
Token: 33	1712	server.exe
Token: SeIncBasePriorityPrivilege	1712	server.exe
Token: 33	1712	server.exe
Token: SeIncBasePriorityPrivilege	1712	server.exe
Token: 33	1712	server.exe
Token: SeIncBasePriorityPrivilege	1712	server.exe
Token: 33	1712	server.exe
Token: SeIncBasePriorityPrivilege	1712	server.exe
Token: 33	1712	server.exe
Token: SeIncBasePriorityPrivilege	1712	server.exe
Token: 33	1712	server.exe
Token: SeIncBasePriorityPrivilege	1712	server.exe
Token: 33	1712	server.exe
Token: SeIncBasePriorityPrivilege	1712	server.exe
Token: 33	1712	server.exe
Token: SeIncBasePriorityPrivilege	1712	server.exe
Token: 33	1712	server.exe
Token: SeIncBasePriorityPrivilege	1712	server.exe
Token: 33	1712	server.exe
Token: SeIncBasePriorityPrivilege	1712	server.exe
Token: 33	1712	server.exe
Token: SeIncBasePriorityPrivilege	1712	server.exe
Token: 33	1712	server.exe
Token: SeIncBasePriorityPrivilege	1712	server.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1692 wrote to memory of 1712	1692	JaffaCakes118_76cea7a749931e08fbd7653b5a508ba0.exe	31
PID 1692 wrote to memory of 1712	1692	JaffaCakes118_76cea7a749931e08fbd7653b5a508ba0.exe	31
PID 1692 wrote to memory of 1712	1692	JaffaCakes118_76cea7a749931e08fbd7653b5a508ba0.exe	31
PID 1692 wrote to memory of 1712	1692	JaffaCakes118_76cea7a749931e08fbd7653b5a508ba0.exe	31
PID 1712 wrote to memory of 2876	1712	server.exe	32
PID 1712 wrote to memory of 2876	1712	server.exe	32
PID 1712 wrote to memory of 2876	1712	server.exe	32
PID 1712 wrote to memory of 2876	1712	server.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_76cea7a749931e08fbd7653b5a508ba0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_76cea7a749931e08fbd7653b5a508ba0.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1692
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1712
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2876

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

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Downloads

\Users\Admin\AppData\Local\Temp\server.exe

Filesize
621KB

MD5
76cea7a749931e08fbd7653b5a508ba0

SHA1
e00319cf77e9a3ef06f3a8c17f5a4c6b2b202635

SHA256
29f8c93f21a18e330efa775ee246240a9733b77d7e18536f09784042807ee923

SHA512
bcc4313cfd9335f5f4b22fa48a9190463e8fb89e33b728a324882c0639310cc518a9086d9a44645002442739425ec42c2093ce4901b3e8f24678d60610c9e60f

Download Submit
memory/1692-0-0x0000000074F21000-0x0000000074F22000-memory.dmp

Filesize
4KB

Download
memory/1692-1-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/1692-2-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/1692-13-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/1712-12-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/1712-11-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/1712-10-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/1712-14-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/1712-17-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/1712-16-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/1712-15-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/1712-18-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads