njrat | d1713e9424b42abbed93b8bac931a31f466348cedbe3d2e46e652a49993aea62

General

Target

a21cd16a5faaa5ac61b4aa8cda835451.exe
Size

23KB
MD5

a21cd16a5faaa5ac61b4aa8cda835451
SHA1

f083f24510d1a33f7a1227b8373d87f971017331
SHA256

d1713e9424b42abbed93b8bac931a31f466348cedbe3d2e46e652a49993aea62
SHA512

bf418dd3f52c34cb84385bf4c1252b350f5a567b78ce9690d287bacdbf291fccda177cac40e13530d3b86841dd8891e8f9cd1bfea9e4a7258cb37858eb787b67
SSDEEP

384:KYmCsw/yJrQ7tRGSQCY1r46JgfCcBjdhmRvR6JZlbw8hqIusZzZhY:d7GktQBRpcnu1

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
4540	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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	a21cd16a5faaa5ac61b4aa8cda835451.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a4aceb606a3a78450684efc8d6569205.exe	dym.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a4aceb606a3a78450684efc8d6569205.exe	dym.exe

Executes dropped EXE 1 IoCs

pid	Process
3000	dym.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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a4aceb606a3a78450684efc8d6569205 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\dym.exe\" .."	dym.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\a4aceb606a3a78450684efc8d6569205 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\dym.exe\" .."	dym.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	a21cd16a5faaa5ac61b4aa8cda835451.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dym.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	3000	dym.exe
Token: 33	3000	dym.exe
Token: SeIncBasePriorityPrivilege	3000	dym.exe
Token: 33	3000	dym.exe
Token: SeIncBasePriorityPrivilege	3000	dym.exe
Token: 33	3000	dym.exe
Token: SeIncBasePriorityPrivilege	3000	dym.exe
Token: 33	3000	dym.exe
Token: SeIncBasePriorityPrivilege	3000	dym.exe
Token: 33	3000	dym.exe
Token: SeIncBasePriorityPrivilege	3000	dym.exe
Token: 33	3000	dym.exe
Token: SeIncBasePriorityPrivilege	3000	dym.exe
Token: 33	3000	dym.exe
Token: SeIncBasePriorityPrivilege	3000	dym.exe
Token: 33	3000	dym.exe
Token: SeIncBasePriorityPrivilege	3000	dym.exe
Token: 33	3000	dym.exe
Token: SeIncBasePriorityPrivilege	3000	dym.exe
Token: 33	3000	dym.exe
Token: SeIncBasePriorityPrivilege	3000	dym.exe
Token: 33	3000	dym.exe
Token: SeIncBasePriorityPrivilege	3000	dym.exe
Token: 33	3000	dym.exe
Token: SeIncBasePriorityPrivilege	3000	dym.exe
Token: 33	3000	dym.exe
Token: SeIncBasePriorityPrivilege	3000	dym.exe
Token: 33	3000	dym.exe
Token: SeIncBasePriorityPrivilege	3000	dym.exe
Token: 33	3000	dym.exe
Token: SeIncBasePriorityPrivilege	3000	dym.exe
Token: 33	3000	dym.exe
Token: SeIncBasePriorityPrivilege	3000	dym.exe
Token: 33	3000	dym.exe
Token: SeIncBasePriorityPrivilege	3000	dym.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 3000	2348	a21cd16a5faaa5ac61b4aa8cda835451.exe	92
PID 2348 wrote to memory of 3000	2348	a21cd16a5faaa5ac61b4aa8cda835451.exe	92
PID 2348 wrote to memory of 3000	2348	a21cd16a5faaa5ac61b4aa8cda835451.exe	92
PID 3000 wrote to memory of 4540	3000	dym.exe	99
PID 3000 wrote to memory of 4540	3000	dym.exe	99
PID 3000 wrote to memory of 4540	3000	dym.exe	99

C:\Users\Admin\AppData\Local\Temp\a21cd16a5faaa5ac61b4aa8cda835451.exe
"C:\Users\Admin\AppData\Local\Temp\a21cd16a5faaa5ac61b4aa8cda835451.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Users\Admin\AppData\Local\Temp\dym.exe
  "C:\Users\Admin\AppData\Local\Temp\dym.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:3000
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\dym.exe" "dym.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:4540

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\dym.exe

Filesize
23KB

MD5
a21cd16a5faaa5ac61b4aa8cda835451

SHA1
f083f24510d1a33f7a1227b8373d87f971017331

SHA256
d1713e9424b42abbed93b8bac931a31f466348cedbe3d2e46e652a49993aea62

SHA512
bf418dd3f52c34cb84385bf4c1252b350f5a567b78ce9690d287bacdbf291fccda177cac40e13530d3b86841dd8891e8f9cd1bfea9e4a7258cb37858eb787b67

Download Submit
memory/2348-0-0x0000000075532000-0x0000000075533000-memory.dmp

Filesize
4KB

Download
memory/2348-1-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/2348-2-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/2348-13-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/3000-12-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/3000-15-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads