njrat | defd912d2b33ea4b31f6f193e36b3e514554d852b31c049b874b278c07918522

General

Target

JaffaCakes118_7ba4ffa0740b412578acb4c24f853d40.exe
Size

177KB
MD5

7ba4ffa0740b412578acb4c24f853d40
SHA1

8dbbffa1d65d3b985905a0e22a9754811dd1af49
SHA256

defd912d2b33ea4b31f6f193e36b3e514554d852b31c049b874b278c07918522
SHA512

4f3b132b8cd30feaab842b24216d5c08ebd104ce57da3572c244f3a2385338c04cfb247039f39ac25a4b660fad1332c0e806f1ace60af7201559afa31af8bac9
SSDEEP

3072:D6B9aPtQGsf83liZFmHmfxY0i9BMl/MTEXytgI+v:VyG8ZFUmfxY0i9BMlUWIgL

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
4776	netsh.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_7ba4ffa0740b412578acb4c24f853d40.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	Tempserver.exe

Executes dropped EXE 2 IoCs

pid	Process
3944	Tempserver.exe
2668	System32.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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\37f1338ec45da9d70b63db6a43be0d4a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System32.exe\" .."	System32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\37f1338ec45da9d70b63db6a43be0d4a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System32.exe\" .."	System32.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly\Desktop.ini	JaffaCakes118_7ba4ffa0740b412578acb4c24f853d40.exe
File created	C:\Windows\assembly\Desktop.ini	JaffaCakes118_7ba4ffa0740b412578acb4c24f853d40.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	JaffaCakes118_7ba4ffa0740b412578acb4c24f853d40.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	JaffaCakes118_7ba4ffa0740b412578acb4c24f853d40.exe
File opened for modification	C:\Windows\assembly	JaffaCakes118_7ba4ffa0740b412578acb4c24f853d40.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	Tempserver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	System32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	2668	System32.exe
Token: 33	2668	System32.exe
Token: SeIncBasePriorityPrivilege	2668	System32.exe
Token: 33	2668	System32.exe
Token: SeIncBasePriorityPrivilege	2668	System32.exe
Token: 33	2668	System32.exe
Token: SeIncBasePriorityPrivilege	2668	System32.exe
Token: 33	2668	System32.exe
Token: SeIncBasePriorityPrivilege	2668	System32.exe
Token: 33	2668	System32.exe
Token: SeIncBasePriorityPrivilege	2668	System32.exe
Token: 33	2668	System32.exe
Token: SeIncBasePriorityPrivilege	2668	System32.exe
Token: 33	2668	System32.exe
Token: SeIncBasePriorityPrivilege	2668	System32.exe
Token: 33	2668	System32.exe
Token: SeIncBasePriorityPrivilege	2668	System32.exe
Token: 33	2668	System32.exe
Token: SeIncBasePriorityPrivilege	2668	System32.exe
Token: 33	2668	System32.exe
Token: SeIncBasePriorityPrivilege	2668	System32.exe
Token: 33	2668	System32.exe
Token: SeIncBasePriorityPrivilege	2668	System32.exe
Token: 33	2668	System32.exe
Token: SeIncBasePriorityPrivilege	2668	System32.exe
Token: 33	2668	System32.exe
Token: SeIncBasePriorityPrivilege	2668	System32.exe
Token: 33	2668	System32.exe
Token: SeIncBasePriorityPrivilege	2668	System32.exe
Token: 33	2668	System32.exe
Token: SeIncBasePriorityPrivilege	2668	System32.exe
Token: 33	2668	System32.exe
Token: SeIncBasePriorityPrivilege	2668	System32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3640 wrote to memory of 3944	3640	JaffaCakes118_7ba4ffa0740b412578acb4c24f853d40.exe	83
PID 3640 wrote to memory of 3944	3640	JaffaCakes118_7ba4ffa0740b412578acb4c24f853d40.exe	83
PID 3640 wrote to memory of 3944	3640	JaffaCakes118_7ba4ffa0740b412578acb4c24f853d40.exe	83
PID 3944 wrote to memory of 2668	3944	Tempserver.exe	84
PID 3944 wrote to memory of 2668	3944	Tempserver.exe	84
PID 3944 wrote to memory of 2668	3944	Tempserver.exe	84
PID 2668 wrote to memory of 4776	2668	System32.exe	85
PID 2668 wrote to memory of 4776	2668	System32.exe	85
PID 2668 wrote to memory of 4776	2668	System32.exe	85

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7ba4ffa0740b412578acb4c24f853d40.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7ba4ffa0740b412578acb4c24f853d40.exe"
1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3640
- C:\Users\Admin\AppData\Local\Tempserver.exe
  "C:\Users\Admin\AppData\Local\Tempserver.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3944
- - C:\Users\Admin\AppData\Local\Temp\System32.exe
    "C:\Users\Admin\AppData\Local\Temp\System32.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2668
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\System32.exe" "System32.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      Event Triggered Execution: Netsh Helper DLL
      System Location Discovery: System Language Discovery
      PID:4776

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

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\Tempserver.exe

Filesize
80KB

MD5
15f624896f84aa416e9d8c5f8a2abe0d

SHA1
e4e07029346f67e51b0936829d3fe1338cb96a00

SHA256
e725989ed9b323949b681450c981ba973cc9f3c6b0368733b0d09f8e83183301

SHA512
aa54de0f43ce7edc0b3525db300190925fa2da2e133ab9154db972dd5c305602a17475a66960a0c06a3320e8a93d998e2653b984095196f0c0fecd3fd302fa92

Download Submit
memory/2668-38-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/2668-37-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/2668-36-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/3640-12-0x00007FFDD3620000-0x00007FFDD3FC1000-memory.dmp

Filesize
9.6MB

Download
memory/3640-5-0x000000001BCF0000-0x000000001BD96000-memory.dmp

Filesize
664KB

Download
memory/3640-8-0x000000001C8B0000-0x000000001C94C000-memory.dmp

Filesize
624KB

Download
memory/3640-9-0x0000000001490000-0x0000000001498000-memory.dmp

Filesize
32KB

Download
memory/3640-10-0x000000001CB40000-0x000000001CB8C000-memory.dmp

Filesize
304KB

Download
memory/3640-11-0x00007FFDD3620000-0x00007FFDD3FC1000-memory.dmp

Filesize
9.6MB

Download
memory/3640-0-0x00007FFDD38D5000-0x00007FFDD38D6000-memory.dmp

Filesize
4KB

Download
memory/3640-7-0x000000001C280000-0x000000001C74E000-memory.dmp

Filesize
4.8MB

Download
memory/3640-22-0x00007FFDD3620000-0x00007FFDD3FC1000-memory.dmp

Filesize
9.6MB

Download
memory/3640-1-0x00007FFDD3620000-0x00007FFDD3FC1000-memory.dmp

Filesize
9.6MB

Download
memory/3640-2-0x000000001BAB0000-0x000000001BACC000-memory.dmp

Filesize
112KB

Download
memory/3640-6-0x00007FFDD3620000-0x00007FFDD3FC1000-memory.dmp

Filesize
9.6MB

Download
memory/3944-25-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/3944-35-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/3944-24-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/3944-23-0x0000000074CD2000-0x0000000074CD3000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads