njrat | 4ec101b6dab91b614add947231a13c7aac3ab4aab435d21526e4a617352d1871

General

Target

4ec101b6dab91b614add947231a13c7aac3ab4aab435d21526e4a617352d1871.exe
Size

592KB
MD5

080ee44ce7177a12b721893a83ca33e3
SHA1

3e0dbf3a0eb29aa12bd8219839da9528614b8dac
SHA256

4ec101b6dab91b614add947231a13c7aac3ab4aab435d21526e4a617352d1871
SHA512

ee63b1b3a0195e8d292f66c925ad9c4743a14cc130faac6f56cb2d7b30ed9a3c1fd2021e40adb298ed0075a56cea7ac3267011073b9b73c23608be906e2d7afe
SSDEEP

12288:I2ry2AV+JpMUd+9VRvB0WgqvgVtpcbpQsc5FyHi7KdyanL1MppFrcNplW50yTFyP:msJdQH70WgqvQMbc5Idyan+pbCb

Score

10^/10

njrat defense_evasion discovery 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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4976	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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	4ec101b6dab91b614add947231a13c7aac3ab4aab435d21526e4a617352d1871.exe

Executes dropped EXE 1 IoCs

pid	Process
2932	express.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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ae26d9119b6d109c4a5d3926a6dd6cc2 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\express.exe\" .."	express.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ae26d9119b6d109c4a5d3926a6dd6cc2 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\express.exe\" .."	express.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	4ec101b6dab91b614add947231a13c7aac3ab4aab435d21526e4a617352d1871.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	express.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	2932	express.exe
Token: 33	2932	express.exe
Token: SeIncBasePriorityPrivilege	2932	express.exe
Token: 33	2932	express.exe
Token: SeIncBasePriorityPrivilege	2932	express.exe
Token: 33	2932	express.exe
Token: SeIncBasePriorityPrivilege	2932	express.exe
Token: 33	2932	express.exe
Token: SeIncBasePriorityPrivilege	2932	express.exe
Token: 33	2932	express.exe
Token: SeIncBasePriorityPrivilege	2932	express.exe
Token: 33	2932	express.exe
Token: SeIncBasePriorityPrivilege	2932	express.exe
Token: 33	2932	express.exe
Token: SeIncBasePriorityPrivilege	2932	express.exe
Token: 33	2932	express.exe
Token: SeIncBasePriorityPrivilege	2932	express.exe
Token: 33	2932	express.exe
Token: SeIncBasePriorityPrivilege	2932	express.exe
Token: 33	2932	express.exe
Token: SeIncBasePriorityPrivilege	2932	express.exe
Token: 33	2932	express.exe
Token: SeIncBasePriorityPrivilege	2932	express.exe
Token: 33	2932	express.exe
Token: SeIncBasePriorityPrivilege	2932	express.exe
Token: 33	2932	express.exe
Token: SeIncBasePriorityPrivilege	2932	express.exe
Token: 33	2932	express.exe
Token: SeIncBasePriorityPrivilege	2932	express.exe
Token: 33	2932	express.exe
Token: SeIncBasePriorityPrivilege	2932	express.exe
Token: 33	2932	express.exe
Token: SeIncBasePriorityPrivilege	2932	express.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1180 wrote to memory of 2932	1180	4ec101b6dab91b614add947231a13c7aac3ab4aab435d21526e4a617352d1871.exe	82
PID 1180 wrote to memory of 2932	1180	4ec101b6dab91b614add947231a13c7aac3ab4aab435d21526e4a617352d1871.exe	82
PID 1180 wrote to memory of 2932	1180	4ec101b6dab91b614add947231a13c7aac3ab4aab435d21526e4a617352d1871.exe	82
PID 2932 wrote to memory of 4976	2932	express.exe	87
PID 2932 wrote to memory of 4976	2932	express.exe	87
PID 2932 wrote to memory of 4976	2932	express.exe	87

C:\Users\Admin\AppData\Local\Temp\4ec101b6dab91b614add947231a13c7aac3ab4aab435d21526e4a617352d1871.exe
"C:\Users\Admin\AppData\Local\Temp\4ec101b6dab91b614add947231a13c7aac3ab4aab435d21526e4a617352d1871.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1180
- C:\Users\Admin\AppData\Local\Temp\express.exe
  "C:\Users\Admin\AppData\Local\Temp\express.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:2932
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\express.exe" "express.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:4976

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\express.exe

Filesize
592KB

MD5
080ee44ce7177a12b721893a83ca33e3

SHA1
3e0dbf3a0eb29aa12bd8219839da9528614b8dac

SHA256
4ec101b6dab91b614add947231a13c7aac3ab4aab435d21526e4a617352d1871

SHA512
ee63b1b3a0195e8d292f66c925ad9c4743a14cc130faac6f56cb2d7b30ed9a3c1fd2021e40adb298ed0075a56cea7ac3267011073b9b73c23608be906e2d7afe

Download Submit
memory/1180-0-0x0000000074BB2000-0x0000000074BB3000-memory.dmp

Filesize
4KB

Download
memory/1180-1-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/1180-2-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/1180-3-0x0000000074BB2000-0x0000000074BB3000-memory.dmp

Filesize
4KB

Download
memory/1180-4-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/1180-14-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/2932-15-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/2932-17-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/2932-16-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/2932-18-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads