njrat | 527b60425a9940022ff0c9a446927b6c9dee71749213ed19ecd97b668e967d6e

General

Target

527b60425a9940022ff0c9a446927b6c9dee71749213ed19ecd97b668e967d6eN.exe
Size

23KB
MD5

08d49959d736c76656d9e90b8fb788e0
SHA1

d4df1f27b9276d43f2ea98f888120cdd766d1b03
SHA256

527b60425a9940022ff0c9a446927b6c9dee71749213ed19ecd97b668e967d6e
SHA512

23ca456b18d840bf2d5ad64fc55fcf14f74eaf2c5bcfba3788d2d20c3f6eaba16f471f423719cdefe4b059661d234d133277f3eaf7e4e692e281209344cfa359
SSDEEP

384:nY324bcgPiJLQrfARGSRUJsbY6vgvSMBD3t8mRvR6JZlbw8hqIusZzZB5kFy:wL2s+tRARpcnu/U

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
2212	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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	527b60425a9940022ff0c9a446927b6c9dee71749213ed19ecd97b668e967d6eN.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ebec477e4946c68d62200c31c3c088a1.exe	server.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ebec477e4946c68d62200c31c3c088a1.exe	server.exe

Executes dropped EXE 1 IoCs

pid	Process
2980	server.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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ebec477e4946c68d62200c31c3c088a1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ebec477e4946c68d62200c31c3c088a1 = "\"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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	527b60425a9940022ff0c9a446927b6c9dee71749213ed19ecd97b668e967d6eN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	2980	server.exe
Token: 33	2980	server.exe
Token: SeIncBasePriorityPrivilege	2980	server.exe
Token: 33	2980	server.exe
Token: SeIncBasePriorityPrivilege	2980	server.exe
Token: 33	2980	server.exe
Token: SeIncBasePriorityPrivilege	2980	server.exe
Token: 33	2980	server.exe
Token: SeIncBasePriorityPrivilege	2980	server.exe
Token: 33	2980	server.exe
Token: SeIncBasePriorityPrivilege	2980	server.exe
Token: 33	2980	server.exe
Token: SeIncBasePriorityPrivilege	2980	server.exe
Token: 33	2980	server.exe
Token: SeIncBasePriorityPrivilege	2980	server.exe
Token: 33	2980	server.exe
Token: SeIncBasePriorityPrivilege	2980	server.exe
Token: 33	2980	server.exe
Token: SeIncBasePriorityPrivilege	2980	server.exe
Token: 33	2980	server.exe
Token: SeIncBasePriorityPrivilege	2980	server.exe
Token: 33	2980	server.exe
Token: SeIncBasePriorityPrivilege	2980	server.exe
Token: 33	2980	server.exe
Token: SeIncBasePriorityPrivilege	2980	server.exe
Token: 33	2980	server.exe
Token: SeIncBasePriorityPrivilege	2980	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3300 wrote to memory of 2980	3300	527b60425a9940022ff0c9a446927b6c9dee71749213ed19ecd97b668e967d6eN.exe	94
PID 3300 wrote to memory of 2980	3300	527b60425a9940022ff0c9a446927b6c9dee71749213ed19ecd97b668e967d6eN.exe	94
PID 3300 wrote to memory of 2980	3300	527b60425a9940022ff0c9a446927b6c9dee71749213ed19ecd97b668e967d6eN.exe	94
PID 2980 wrote to memory of 2212	2980	server.exe	99
PID 2980 wrote to memory of 2212	2980	server.exe	99
PID 2980 wrote to memory of 2212	2980	server.exe	99

C:\Users\Admin\AppData\Local\Temp\527b60425a9940022ff0c9a446927b6c9dee71749213ed19ecd97b668e967d6eN.exe
"C:\Users\Admin\AppData\Local\Temp\527b60425a9940022ff0c9a446927b6c9dee71749213ed19ecd97b668e967d6eN.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3300
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.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:2980
- - 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:2212

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\server.exe

Filesize
23KB

MD5
08d49959d736c76656d9e90b8fb788e0

SHA1
d4df1f27b9276d43f2ea98f888120cdd766d1b03

SHA256
527b60425a9940022ff0c9a446927b6c9dee71749213ed19ecd97b668e967d6e

SHA512
23ca456b18d840bf2d5ad64fc55fcf14f74eaf2c5bcfba3788d2d20c3f6eaba16f471f423719cdefe4b059661d234d133277f3eaf7e4e692e281209344cfa359

Download Submit
memory/2980-13-0x00000000751F0000-0x00000000757A1000-memory.dmp

Filesize
5.7MB

Download
memory/2980-14-0x00000000751F0000-0x00000000757A1000-memory.dmp

Filesize
5.7MB

Download
memory/2980-16-0x00000000751F0000-0x00000000757A1000-memory.dmp

Filesize
5.7MB

Download
memory/3300-0-0x00000000751F2000-0x00000000751F3000-memory.dmp

Filesize
4KB

Download
memory/3300-1-0x00000000751F0000-0x00000000757A1000-memory.dmp

Filesize
5.7MB

Download
memory/3300-2-0x00000000751F0000-0x00000000757A1000-memory.dmp

Filesize
5.7MB

Download
memory/3300-12-0x00000000751F0000-0x00000000757A1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads