njrat | a904e933f2c99838633aa43bbdda3b260be7d9a5ae3bc419cdf62acee8429a8e

General

Target

a904e933f2c99838633aa43bbdda3b260be7d9a5ae3bc419cdf62acee8429a8eN.exe
Size

23KB
MD5

7b9a65228b56ac8de52b81c782d8ede0
SHA1

44439199c37e64fb2ca280d4522f72247aa654d9
SHA256

a904e933f2c99838633aa43bbdda3b260be7d9a5ae3bc419cdf62acee8429a8e
SHA512

7e0d9b3e051a7dc262303015c15575f5b4f128aea19614b524ff96799d9f878f7003f9f955fa34bcda488f60c49dab5f3e2255f3d467504b558cf004cb1d96ad
SSDEEP

384:aoWtkEwn65rgjAsGipk55D16xgXakhbZD0mRvR6JZlbw8hqIusZzZIld:97O89p2rRpcnujd

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

Processes:

netsh.exe

pid process

2848 netsh.exe

pid	process
2848	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

Processes:

a904e933f2c99838633aa43bbdda3b260be7d9a5ae3bc419cdf62acee8429a8eN.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	a904e933f2c99838633aa43bbdda3b260be7d9a5ae3bc419cdf62acee8429a8eN.exe

Executes dropped EXE 1 IoCs

Processes:

server.exe

pid process

4544 server.exe

pid	process
4544	server.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

server.exe

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

Processes:

netsh.exe

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

Processes:

a904e933f2c99838633aa43bbdda3b260be7d9a5ae3bc419cdf62acee8429a8eN.exeserver.exenetsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a904e933f2c99838633aa43bbdda3b260be7d9a5ae3bc419cdf62acee8429a8eN.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 27 IoCs

Processes:

server.exe

description	pid	process
Token: SeDebugPrivilege	4544	server.exe
Token: 33	4544	server.exe
Token: SeIncBasePriorityPrivilege	4544	server.exe
Token: 33	4544	server.exe
Token: SeIncBasePriorityPrivilege	4544	server.exe
Token: 33	4544	server.exe
Token: SeIncBasePriorityPrivilege	4544	server.exe
Token: 33	4544	server.exe
Token: SeIncBasePriorityPrivilege	4544	server.exe
Token: 33	4544	server.exe
Token: SeIncBasePriorityPrivilege	4544	server.exe
Token: 33	4544	server.exe
Token: SeIncBasePriorityPrivilege	4544	server.exe
Token: 33	4544	server.exe
Token: SeIncBasePriorityPrivilege	4544	server.exe
Token: 33	4544	server.exe
Token: SeIncBasePriorityPrivilege	4544	server.exe
Token: 33	4544	server.exe
Token: SeIncBasePriorityPrivilege	4544	server.exe
Token: 33	4544	server.exe
Token: SeIncBasePriorityPrivilege	4544	server.exe
Token: 33	4544	server.exe
Token: SeIncBasePriorityPrivilege	4544	server.exe
Token: 33	4544	server.exe
Token: SeIncBasePriorityPrivilege	4544	server.exe
Token: 33	4544	server.exe
Token: SeIncBasePriorityPrivilege	4544	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

a904e933f2c99838633aa43bbdda3b260be7d9a5ae3bc419cdf62acee8429a8eN.exeserver.exe

description	pid	process	target process
PID 116 wrote to memory of 4544	116	a904e933f2c99838633aa43bbdda3b260be7d9a5ae3bc419cdf62acee8429a8eN.exe	server.exe
PID 116 wrote to memory of 4544	116	a904e933f2c99838633aa43bbdda3b260be7d9a5ae3bc419cdf62acee8429a8eN.exe	server.exe
PID 116 wrote to memory of 4544	116	a904e933f2c99838633aa43bbdda3b260be7d9a5ae3bc419cdf62acee8429a8eN.exe	server.exe
PID 4544 wrote to memory of 2848	4544	server.exe	netsh.exe
PID 4544 wrote to memory of 2848	4544	server.exe	netsh.exe
PID 4544 wrote to memory of 2848	4544	server.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\a904e933f2c99838633aa43bbdda3b260be7d9a5ae3bc419cdf62acee8429a8eN.exe
"C:\Users\Admin\AppData\Local\Temp\a904e933f2c99838633aa43bbdda3b260be7d9a5ae3bc419cdf62acee8429a8eN.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:116
- 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:4544
- - 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:2848

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
7b9a65228b56ac8de52b81c782d8ede0

SHA1
44439199c37e64fb2ca280d4522f72247aa654d9

SHA256
a904e933f2c99838633aa43bbdda3b260be7d9a5ae3bc419cdf62acee8429a8e

SHA512
7e0d9b3e051a7dc262303015c15575f5b4f128aea19614b524ff96799d9f878f7003f9f955fa34bcda488f60c49dab5f3e2255f3d467504b558cf004cb1d96ad

Download Submit
memory/116-0-0x0000000075372000-0x0000000075373000-memory.dmp

Filesize
4KB

Download
memory/116-1-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/116-2-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/116-12-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/4544-13-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/4544-14-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/4544-15-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads