njrat | ab42f9e59fc9aca2b23beaa1921a9b8fa5985234911ef51655cc3dda78a6345a

General

Target

b5d03791152af32112680be74464a370d201c41e.exe
Size

23KB
MD5

820f5a17e8cefe2eda0c7ed051c5060e
SHA1

b5d03791152af32112680be74464a370d201c41e
SHA256

ab42f9e59fc9aca2b23beaa1921a9b8fa5985234911ef51655cc3dda78a6345a
SHA512

d9f2a3fe2add82e2e20390c0e1ea9b0574aa0bbccdca435f492c91fe33be95f49c7799a8dc65796f582ad4857fbb54e176b9821b2b29e0a009fdae742c5a6951
SSDEEP

384:CoWtkEwn65rgjAsGipk55D16xgXakhbZD0mRvR6JZlbw8hqIusZzZI+:F7O89p2rRpcnuM

Score

10^/10

njrat discovery evasion persistence privilege_escalation trojan

Malware Config

Signatures

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
3852	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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	b5d03791152af32112680be74464a370d201c41e.exe

Executes dropped EXE 1 IoCs

pid	Process
5104	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-1-5-21-1194130065-3471212556-1656947724-1000\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 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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b5d03791152af32112680be74464a370d201c41e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	5104	server.exe
Token: 33	5104	server.exe
Token: SeIncBasePriorityPrivilege	5104	server.exe
Token: 33	5104	server.exe
Token: SeIncBasePriorityPrivilege	5104	server.exe
Token: 33	5104	server.exe
Token: SeIncBasePriorityPrivilege	5104	server.exe
Token: 33	5104	server.exe
Token: SeIncBasePriorityPrivilege	5104	server.exe
Token: 33	5104	server.exe
Token: SeIncBasePriorityPrivilege	5104	server.exe
Token: 33	5104	server.exe
Token: SeIncBasePriorityPrivilege	5104	server.exe
Token: 33	5104	server.exe
Token: SeIncBasePriorityPrivilege	5104	server.exe
Token: 33	5104	server.exe
Token: SeIncBasePriorityPrivilege	5104	server.exe
Token: 33	5104	server.exe
Token: SeIncBasePriorityPrivilege	5104	server.exe
Token: 33	5104	server.exe
Token: SeIncBasePriorityPrivilege	5104	server.exe
Token: 33	5104	server.exe
Token: SeIncBasePriorityPrivilege	5104	server.exe
Token: 33	5104	server.exe
Token: SeIncBasePriorityPrivilege	5104	server.exe
Token: 33	5104	server.exe
Token: SeIncBasePriorityPrivilege	5104	server.exe
Token: 33	5104	server.exe
Token: SeIncBasePriorityPrivilege	5104	server.exe
Token: 33	5104	server.exe
Token: SeIncBasePriorityPrivilege	5104	server.exe
Token: 33	5104	server.exe
Token: SeIncBasePriorityPrivilege	5104	server.exe
Token: 33	5104	server.exe
Token: SeIncBasePriorityPrivilege	5104	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4472 wrote to memory of 5104	4472	b5d03791152af32112680be74464a370d201c41e.exe	87
PID 4472 wrote to memory of 5104	4472	b5d03791152af32112680be74464a370d201c41e.exe	87
PID 4472 wrote to memory of 5104	4472	b5d03791152af32112680be74464a370d201c41e.exe	87
PID 5104 wrote to memory of 3852	5104	server.exe	90
PID 5104 wrote to memory of 3852	5104	server.exe	90
PID 5104 wrote to memory of 3852	5104	server.exe	90

C:\Users\Admin\AppData\Local\Temp\b5d03791152af32112680be74464a370d201c41e.exe
"C:\Users\Admin\AppData\Local\Temp\b5d03791152af32112680be74464a370d201c41e.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4472
- 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:5104
- - 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:3852

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
820f5a17e8cefe2eda0c7ed051c5060e

SHA1
b5d03791152af32112680be74464a370d201c41e

SHA256
ab42f9e59fc9aca2b23beaa1921a9b8fa5985234911ef51655cc3dda78a6345a

SHA512
d9f2a3fe2add82e2e20390c0e1ea9b0574aa0bbccdca435f492c91fe33be95f49c7799a8dc65796f582ad4857fbb54e176b9821b2b29e0a009fdae742c5a6951

Download Submit
memory/4472-0-0x0000000074882000-0x0000000074883000-memory.dmp

Filesize
4KB

Download
memory/4472-1-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/4472-2-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/4472-13-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/5104-12-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/5104-14-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/5104-15-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/5104-16-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads