njrat | 88bdb766f6f09104c43b54e1226d8ae2ea734b8117276a40741099ec79dceff3

General

Target

JaffaCakes118_77d9701431d20caa93469771d6f44dc0.exe
Size

438KB
MD5

77d9701431d20caa93469771d6f44dc0
SHA1

6dc0cfcec96c55f3d3f6667f5f95040d9f8aa39b
SHA256

88bdb766f6f09104c43b54e1226d8ae2ea734b8117276a40741099ec79dceff3
SHA512

b7cf14d91c9fb5f36669e8396a449a9efbe6f5e972cc23776579120126a613f10248fcf6fe91f4567ca960c3d11ab945376dbb0fdbc29dd66114ec7ef706db3b
SSDEEP

6144:nHnMBnkOZHpp+6rbwwQjKUsIS4KTYChXod2YX5iWD1c00R9XnaLzrvZRTJRm:HnMBhp+6rbwLKUsF4KYClpYAuSdcZBJ

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
5064	netsh.exe

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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_77d9701431d20caa93469771d6f44dc0.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\45ca55fc1756e880072f0dde4455397b.exe	win32.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\45ca55fc1756e880072f0dde4455397b.exe	win32.exe

Executes dropped EXE 1 IoCs

pid	Process
4076	win32.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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\45ca55fc1756e880072f0dde4455397b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\win32.exe\" .."	win32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\45ca55fc1756e880072f0dde4455397b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\win32.exe\" .."	win32.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	JaffaCakes118_77d9701431d20caa93469771d6f44dc0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe
4076	win32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4076	win32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1572 wrote to memory of 4076	1572	JaffaCakes118_77d9701431d20caa93469771d6f44dc0.exe	82
PID 1572 wrote to memory of 4076	1572	JaffaCakes118_77d9701431d20caa93469771d6f44dc0.exe	82
PID 1572 wrote to memory of 4076	1572	JaffaCakes118_77d9701431d20caa93469771d6f44dc0.exe	82
PID 4076 wrote to memory of 5064	4076	win32.exe	83
PID 4076 wrote to memory of 5064	4076	win32.exe	83
PID 4076 wrote to memory of 5064	4076	win32.exe	83

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_77d9701431d20caa93469771d6f44dc0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_77d9701431d20caa93469771d6f44dc0.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1572
- C:\Users\Admin\AppData\Local\Temp\win32.exe
  "C:\Users\Admin\AppData\Local\Temp\win32.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4076
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\win32.exe" "win32.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:5064

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\Temp\win32.exe

Filesize
438KB

MD5
77d9701431d20caa93469771d6f44dc0

SHA1
6dc0cfcec96c55f3d3f6667f5f95040d9f8aa39b

SHA256
88bdb766f6f09104c43b54e1226d8ae2ea734b8117276a40741099ec79dceff3

SHA512
b7cf14d91c9fb5f36669e8396a449a9efbe6f5e972cc23776579120126a613f10248fcf6fe91f4567ca960c3d11ab945376dbb0fdbc29dd66114ec7ef706db3b

Download Submit
memory/1572-6-0x0000000005220000-0x000000000522A000-memory.dmp

Filesize
40KB

Download
memory/1572-2-0x0000000005690000-0x0000000005C34000-memory.dmp

Filesize
5.6MB

Download
memory/1572-3-0x0000000005180000-0x0000000005212000-memory.dmp

Filesize
584KB

Download
memory/1572-4-0x00000000052C0000-0x000000000535C000-memory.dmp

Filesize
624KB

Download
memory/1572-5-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/1572-0-0x000000007476E000-0x000000007476F000-memory.dmp

Filesize
4KB

Download
memory/1572-7-0x0000000005680000-0x000000000568E000-memory.dmp

Filesize
56KB

Download
memory/1572-1-0x0000000000750000-0x00000000007C4000-memory.dmp

Filesize
464KB

Download
memory/1572-23-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/4076-20-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/4076-21-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/4076-24-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads