njrat | 7256e439e5ff785baeadc6e50ea4963bedab6ae9f905997d7ea66f0890fc58e7

General

Target

7256e439e5ff785baeadc6e50ea4963bedab6ae9f905997d7ea66f0890fc58e7.exe
Size

23KB
MD5

da1105d020250be0792d3bf21c51dc38
SHA1

54249230c23dc70a52450405bbd8ce648c9765eb
SHA256

7256e439e5ff785baeadc6e50ea4963bedab6ae9f905997d7ea66f0890fc58e7
SHA512

f2b18e924fef4a2a65e1ce399c7ad108d881ddece7272bbd7e5d1f6e93543d0df8ea67948a4aacaa244b0e499a047a91fe36b030f64dc63ab3655f5ec27ac8b9
SSDEEP

384:D8aY1ia0N/IH+WUiWiLcXyUTly2Rc87po6ngB8W+tqlf5mRvR6JZlbw8hqIusZzc:q1Re/E+WUiW6ci6NR7tZRpcnu/7

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
1480	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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	7256e439e5ff785baeadc6e50ea4963bedab6ae9f905997d7ea66f0890fc58e7.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\626e4dfbf3e3dd60d6fbf80bed03d249.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\626e4dfbf3e3dd60d6fbf80bed03d249.exe	server.exe

Executes dropped EXE 1 IoCs

pid	Process
4048	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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\626e4dfbf3e3dd60d6fbf80bed03d249 = "\"C:\\ProgramData\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\626e4dfbf3e3dd60d6fbf80bed03d249 = "\"C:\\ProgramData\\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	7256e439e5ff785baeadc6e50ea4963bedab6ae9f905997d7ea66f0890fc58e7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	4048	server.exe
Token: 33	4048	server.exe
Token: SeIncBasePriorityPrivilege	4048	server.exe
Token: 33	4048	server.exe
Token: SeIncBasePriorityPrivilege	4048	server.exe
Token: 33	4048	server.exe
Token: SeIncBasePriorityPrivilege	4048	server.exe
Token: 33	4048	server.exe
Token: SeIncBasePriorityPrivilege	4048	server.exe
Token: 33	4048	server.exe
Token: SeIncBasePriorityPrivilege	4048	server.exe
Token: 33	4048	server.exe
Token: SeIncBasePriorityPrivilege	4048	server.exe
Token: 33	4048	server.exe
Token: SeIncBasePriorityPrivilege	4048	server.exe
Token: 33	4048	server.exe
Token: SeIncBasePriorityPrivilege	4048	server.exe
Token: 33	4048	server.exe
Token: SeIncBasePriorityPrivilege	4048	server.exe
Token: 33	4048	server.exe
Token: SeIncBasePriorityPrivilege	4048	server.exe
Token: 33	4048	server.exe
Token: SeIncBasePriorityPrivilege	4048	server.exe
Token: 33	4048	server.exe
Token: SeIncBasePriorityPrivilege	4048	server.exe
Token: 33	4048	server.exe
Token: SeIncBasePriorityPrivilege	4048	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 4048	4912	7256e439e5ff785baeadc6e50ea4963bedab6ae9f905997d7ea66f0890fc58e7.exe	84
PID 4912 wrote to memory of 4048	4912	7256e439e5ff785baeadc6e50ea4963bedab6ae9f905997d7ea66f0890fc58e7.exe	84
PID 4912 wrote to memory of 4048	4912	7256e439e5ff785baeadc6e50ea4963bedab6ae9f905997d7ea66f0890fc58e7.exe	84
PID 4048 wrote to memory of 1480	4048	server.exe	94
PID 4048 wrote to memory of 1480	4048	server.exe	94
PID 4048 wrote to memory of 1480	4048	server.exe	94

C:\Users\Admin\AppData\Local\Temp\7256e439e5ff785baeadc6e50ea4963bedab6ae9f905997d7ea66f0890fc58e7.exe
"C:\Users\Admin\AppData\Local\Temp\7256e439e5ff785baeadc6e50ea4963bedab6ae9f905997d7ea66f0890fc58e7.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4912
- C:\ProgramData\server.exe
  "C:\ProgramData\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:4048
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\ProgramData\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:1480

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:\ProgramData\server.exe

Filesize
23KB

MD5
da1105d020250be0792d3bf21c51dc38

SHA1
54249230c23dc70a52450405bbd8ce648c9765eb

SHA256
7256e439e5ff785baeadc6e50ea4963bedab6ae9f905997d7ea66f0890fc58e7

SHA512
f2b18e924fef4a2a65e1ce399c7ad108d881ddece7272bbd7e5d1f6e93543d0df8ea67948a4aacaa244b0e499a047a91fe36b030f64dc63ab3655f5ec27ac8b9

Download Submit
memory/4048-12-0x0000000075230000-0x00000000757E1000-memory.dmp

Filesize
5.7MB

Download
memory/4048-15-0x0000000075230000-0x00000000757E1000-memory.dmp

Filesize
5.7MB

Download
memory/4048-16-0x0000000075230000-0x00000000757E1000-memory.dmp

Filesize
5.7MB

Download
memory/4048-17-0x0000000075230000-0x00000000757E1000-memory.dmp

Filesize
5.7MB

Download
memory/4912-0-0x0000000075232000-0x0000000075233000-memory.dmp

Filesize
4KB

Download
memory/4912-1-0x0000000075230000-0x00000000757E1000-memory.dmp

Filesize
5.7MB

Download
memory/4912-2-0x0000000075230000-0x00000000757E1000-memory.dmp

Filesize
5.7MB

Download
memory/4912-13-0x0000000075230000-0x00000000757E1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads