njrat | b1af76b2d3590dba6bd0ab22e7a5000fcc1e4a743ea072468c8d8e92cb262219

General

Target

b1af76b2d3590dba6bd0ab22e7a5000fcc1e4a743ea072468c8d8e92cb262219.exe
Size

23KB
MD5

3d5b00a426b53804963d22bb5237b259
SHA1

b78a096054006d4d7337d232ca3562f2a5d2890e
SHA256

b1af76b2d3590dba6bd0ab22e7a5000fcc1e4a743ea072468c8d8e92cb262219
SHA512

44985f22750cd3632f56d2bf4a0d2fe5d15a14680ace15563a37320ede95b5776cf22843c9cc859be06f2b52eb80468da9f3fd233be32c7536cb2e10e73c46f7
SSDEEP

384:0oWtkEwn65rgjAsGipk55D16HgXakhbZD0mRvR6JZlbw8hqIusZzZI+:j7O89pErRpcnu8

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
372	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	b1af76b2d3590dba6bd0ab22e7a5000fcc1e4a743ea072468c8d8e92cb262219.exe

Executes dropped EXE 1 IoCs

pid	Process
1164	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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\7657c14284185fbd3fb108b43c7467ba = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\7657c14284185fbd3fb108b43c7467ba = "\"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	b1af76b2d3590dba6bd0ab22e7a5000fcc1e4a743ea072468c8d8e92cb262219.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 34 IoCs

description	pid	Process
Token: SeDebugPrivilege	1164	server.exe
Token: 33	1164	server.exe
Token: SeIncBasePriorityPrivilege	1164	server.exe
Token: 33	1164	server.exe
Token: SeIncBasePriorityPrivilege	1164	server.exe
Token: 33	1164	server.exe
Token: SeIncBasePriorityPrivilege	1164	server.exe
Token: 33	1164	server.exe
Token: SeIncBasePriorityPrivilege	1164	server.exe
Token: 33	1164	server.exe
Token: SeIncBasePriorityPrivilege	1164	server.exe
Token: 33	1164	server.exe
Token: SeIncBasePriorityPrivilege	1164	server.exe
Token: 33	1164	server.exe
Token: SeIncBasePriorityPrivilege	1164	server.exe
Token: 33	1164	server.exe
Token: SeIncBasePriorityPrivilege	1164	server.exe
Token: 33	1164	server.exe
Token: SeIncBasePriorityPrivilege	1164	server.exe
Token: 33	1164	server.exe
Token: SeIncBasePriorityPrivilege	1164	server.exe
Token: 33	1164	server.exe
Token: SeIncBasePriorityPrivilege	1164	server.exe
Token: 33	1164	server.exe
Token: SeIncBasePriorityPrivilege	1164	server.exe
Token: 33	1164	server.exe
Token: SeIncBasePriorityPrivilege	1164	server.exe
Token: 33	1164	server.exe
Token: SeIncBasePriorityPrivilege	1164	server.exe
Token: 33	1164	server.exe
Token: SeIncBasePriorityPrivilege	1164	server.exe
Token: 33	1164	server.exe
Token: SeIncBasePriorityPrivilege	1164	server.exe
Token: 33	1164	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2936 wrote to memory of 1164	2936	b1af76b2d3590dba6bd0ab22e7a5000fcc1e4a743ea072468c8d8e92cb262219.exe	95
PID 2936 wrote to memory of 1164	2936	b1af76b2d3590dba6bd0ab22e7a5000fcc1e4a743ea072468c8d8e92cb262219.exe	95
PID 2936 wrote to memory of 1164	2936	b1af76b2d3590dba6bd0ab22e7a5000fcc1e4a743ea072468c8d8e92cb262219.exe	95
PID 1164 wrote to memory of 372	1164	server.exe	98
PID 1164 wrote to memory of 372	1164	server.exe	98
PID 1164 wrote to memory of 372	1164	server.exe	98

C:\Users\Admin\AppData\Local\Temp\b1af76b2d3590dba6bd0ab22e7a5000fcc1e4a743ea072468c8d8e92cb262219.exe
"C:\Users\Admin\AppData\Local\Temp\b1af76b2d3590dba6bd0ab22e7a5000fcc1e4a743ea072468c8d8e92cb262219.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2936
- 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:1164
- - 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:372

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
3d5b00a426b53804963d22bb5237b259

SHA1
b78a096054006d4d7337d232ca3562f2a5d2890e

SHA256
b1af76b2d3590dba6bd0ab22e7a5000fcc1e4a743ea072468c8d8e92cb262219

SHA512
44985f22750cd3632f56d2bf4a0d2fe5d15a14680ace15563a37320ede95b5776cf22843c9cc859be06f2b52eb80468da9f3fd233be32c7536cb2e10e73c46f7

Download Submit
memory/1164-13-0x0000000074EE0000-0x0000000075491000-memory.dmp

Filesize
5.7MB

Download
memory/1164-14-0x0000000074EE0000-0x0000000075491000-memory.dmp

Filesize
5.7MB

Download
memory/1164-15-0x0000000074EE0000-0x0000000075491000-memory.dmp

Filesize
5.7MB

Download
memory/1164-16-0x0000000074EE0000-0x0000000075491000-memory.dmp

Filesize
5.7MB

Download
memory/2936-0-0x0000000074EE2000-0x0000000074EE3000-memory.dmp

Filesize
4KB

Download
memory/2936-1-0x0000000074EE0000-0x0000000075491000-memory.dmp

Filesize
5.7MB

Download
memory/2936-2-0x0000000074EE0000-0x0000000075491000-memory.dmp

Filesize
5.7MB

Download
memory/2936-12-0x0000000074EE0000-0x0000000075491000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads