njrat | c5f73cf6bc2e63a457b85ce51a71588a20ed957fdd3d022f8bd23ebc63f0cfc3

General

Target

c5f73cf6bc2e63a457b85ce51a71588a20ed957fdd3d022f8bd23ebc63f0cfc3N.exe
Size

23KB
MD5

c6193fc3f383717b32c9ddce4d922510
SHA1

3d93360f80eb8eecbc1b0048917fb35100e4b0b2
SHA256

c5f73cf6bc2e63a457b85ce51a71588a20ed957fdd3d022f8bd23ebc63f0cfc3
SHA512

c50d7d64595fa4f4d4ad2a94d41fbe66f93bb866e7647cf1c7ca3517acffa5436fa675e94ae1fa7d3d61218996c94de69a12a3126777227f4b3e4bfdfc296aab
SSDEEP

384:2QeCo2zmZbQHkJeCdUwBvQ61gjuQBnB9mRvR6JZlbw8hqIusZzZ3F:h5yBVd7Rpcnu6

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
3244	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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	c5f73cf6bc2e63a457b85ce51a71588a20ed957fdd3d022f8bd23ebc63f0cfc3N.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8e27539cbb14d942aad0b409f9d9f56f.exe	system.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8e27539cbb14d942aad0b409f9d9f56f.exe	system.exe

Executes dropped EXE 1 IoCs

pid	Process
3704	system.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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\8e27539cbb14d942aad0b409f9d9f56f = "\"C:\\Users\\Admin\\system.exe\" .."	system.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\8e27539cbb14d942aad0b409f9d9f56f = "\"C:\\Users\\Admin\\system.exe\" .."	system.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	c5f73cf6bc2e63a457b85ce51a71588a20ed957fdd3d022f8bd23ebc63f0cfc3N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	system.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	3704	system.exe
Token: 33	3704	system.exe
Token: SeIncBasePriorityPrivilege	3704	system.exe
Token: 33	3704	system.exe
Token: SeIncBasePriorityPrivilege	3704	system.exe
Token: 33	3704	system.exe
Token: SeIncBasePriorityPrivilege	3704	system.exe
Token: 33	3704	system.exe
Token: SeIncBasePriorityPrivilege	3704	system.exe
Token: 33	3704	system.exe
Token: SeIncBasePriorityPrivilege	3704	system.exe
Token: 33	3704	system.exe
Token: SeIncBasePriorityPrivilege	3704	system.exe
Token: 33	3704	system.exe
Token: SeIncBasePriorityPrivilege	3704	system.exe
Token: 33	3704	system.exe
Token: SeIncBasePriorityPrivilege	3704	system.exe
Token: 33	3704	system.exe
Token: SeIncBasePriorityPrivilege	3704	system.exe
Token: 33	3704	system.exe
Token: SeIncBasePriorityPrivilege	3704	system.exe
Token: 33	3704	system.exe
Token: SeIncBasePriorityPrivilege	3704	system.exe
Token: 33	3704	system.exe
Token: SeIncBasePriorityPrivilege	3704	system.exe
Token: 33	3704	system.exe
Token: SeIncBasePriorityPrivilege	3704	system.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4532 wrote to memory of 3704	4532	c5f73cf6bc2e63a457b85ce51a71588a20ed957fdd3d022f8bd23ebc63f0cfc3N.exe	82
PID 4532 wrote to memory of 3704	4532	c5f73cf6bc2e63a457b85ce51a71588a20ed957fdd3d022f8bd23ebc63f0cfc3N.exe	82
PID 4532 wrote to memory of 3704	4532	c5f73cf6bc2e63a457b85ce51a71588a20ed957fdd3d022f8bd23ebc63f0cfc3N.exe	82
PID 3704 wrote to memory of 3244	3704	system.exe	83
PID 3704 wrote to memory of 3244	3704	system.exe	83
PID 3704 wrote to memory of 3244	3704	system.exe	83

C:\Users\Admin\AppData\Local\Temp\c5f73cf6bc2e63a457b85ce51a71588a20ed957fdd3d022f8bd23ebc63f0cfc3N.exe
"C:\Users\Admin\AppData\Local\Temp\c5f73cf6bc2e63a457b85ce51a71588a20ed957fdd3d022f8bd23ebc63f0cfc3N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4532
- C:\Users\Admin\system.exe
  "C:\Users\Admin\system.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:3704
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\system.exe" "system.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:3244

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\system.exe

Filesize
23KB

MD5
c6193fc3f383717b32c9ddce4d922510

SHA1
3d93360f80eb8eecbc1b0048917fb35100e4b0b2

SHA256
c5f73cf6bc2e63a457b85ce51a71588a20ed957fdd3d022f8bd23ebc63f0cfc3

SHA512
c50d7d64595fa4f4d4ad2a94d41fbe66f93bb866e7647cf1c7ca3517acffa5436fa675e94ae1fa7d3d61218996c94de69a12a3126777227f4b3e4bfdfc296aab

Download Submit
memory/3704-21-0x00000000750E0000-0x0000000075691000-memory.dmp

Filesize
5.7MB

Download
memory/3704-23-0x00000000750E0000-0x0000000075691000-memory.dmp

Filesize
5.7MB

Download
memory/3704-25-0x00000000750E0000-0x0000000075691000-memory.dmp

Filesize
5.7MB

Download
memory/4532-0-0x00000000750E2000-0x00000000750E3000-memory.dmp

Filesize
4KB

Download
memory/4532-1-0x00000000750E0000-0x0000000075691000-memory.dmp

Filesize
5.7MB

Download
memory/4532-2-0x00000000750E0000-0x0000000075691000-memory.dmp

Filesize
5.7MB

Download
memory/4532-22-0x00000000750E0000-0x0000000075691000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads