njrat | fbb535e2e819ac62a2210a66835e401bab27787198639c8b5fb1e6b4abdc95a6

General

Target

fbb535e2e819ac62a2210a66835e401bab27787198639c8b5fb1e6b4abdc95a6N.exe
Size

23KB
MD5

0ae2ed9254e3174c7e8d46f1f4ebafe0
SHA1

e9f0a59c76f1b4687b4fe6174abd581b393ba9e1
SHA256

fbb535e2e819ac62a2210a66835e401bab27787198639c8b5fb1e6b4abdc95a6
SHA512

f67894a4c6e42f0cde53230419431717aead8c3b2e50d3a90166fc6cc40f9a8d74e7da7a6b76f168ed69b352b0237358ac76f687a83b7230da20bc88858c7605
SSDEEP

384:+oWtkEwn65rgjAsGipk55D16xgXakhbZD0mRvR6JZlbw8hqIusZzZIn:x7O89p2rRpcnuN

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
1408	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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	fbb535e2e819ac62a2210a66835e401bab27787198639c8b5fb1e6b4abdc95a6N.exe

Executes dropped EXE 1 IoCs

pid	Process
1972	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-1-5-21-493223053-2004649691-1575712786-1000\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	fbb535e2e819ac62a2210a66835e401bab27787198639c8b5fb1e6b4abdc95a6N.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

description	pid	Process
Token: SeDebugPrivilege	1972	server.exe
Token: 33	1972	server.exe
Token: SeIncBasePriorityPrivilege	1972	server.exe
Token: 33	1972	server.exe
Token: SeIncBasePriorityPrivilege	1972	server.exe
Token: 33	1972	server.exe
Token: SeIncBasePriorityPrivilege	1972	server.exe
Token: 33	1972	server.exe
Token: SeIncBasePriorityPrivilege	1972	server.exe
Token: 33	1972	server.exe
Token: SeIncBasePriorityPrivilege	1972	server.exe
Token: 33	1972	server.exe
Token: SeIncBasePriorityPrivilege	1972	server.exe
Token: 33	1972	server.exe
Token: SeIncBasePriorityPrivilege	1972	server.exe
Token: 33	1972	server.exe
Token: SeIncBasePriorityPrivilege	1972	server.exe
Token: 33	1972	server.exe
Token: SeIncBasePriorityPrivilege	1972	server.exe
Token: 33	1972	server.exe
Token: SeIncBasePriorityPrivilege	1972	server.exe
Token: 33	1972	server.exe
Token: SeIncBasePriorityPrivilege	1972	server.exe
Token: 33	1972	server.exe
Token: SeIncBasePriorityPrivilege	1972	server.exe
Token: 33	1972	server.exe
Token: SeIncBasePriorityPrivilege	1972	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 560 wrote to memory of 1972	560	fbb535e2e819ac62a2210a66835e401bab27787198639c8b5fb1e6b4abdc95a6N.exe	83
PID 560 wrote to memory of 1972	560	fbb535e2e819ac62a2210a66835e401bab27787198639c8b5fb1e6b4abdc95a6N.exe	83
PID 560 wrote to memory of 1972	560	fbb535e2e819ac62a2210a66835e401bab27787198639c8b5fb1e6b4abdc95a6N.exe	83
PID 1972 wrote to memory of 1408	1972	server.exe	92
PID 1972 wrote to memory of 1408	1972	server.exe	92
PID 1972 wrote to memory of 1408	1972	server.exe	92

C:\Users\Admin\AppData\Local\Temp\fbb535e2e819ac62a2210a66835e401bab27787198639c8b5fb1e6b4abdc95a6N.exe
"C:\Users\Admin\AppData\Local\Temp\fbb535e2e819ac62a2210a66835e401bab27787198639c8b5fb1e6b4abdc95a6N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:560
- 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:1972
- - 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:1408

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
0ae2ed9254e3174c7e8d46f1f4ebafe0

SHA1
e9f0a59c76f1b4687b4fe6174abd581b393ba9e1

SHA256
fbb535e2e819ac62a2210a66835e401bab27787198639c8b5fb1e6b4abdc95a6

SHA512
f67894a4c6e42f0cde53230419431717aead8c3b2e50d3a90166fc6cc40f9a8d74e7da7a6b76f168ed69b352b0237358ac76f687a83b7230da20bc88858c7605

Download Submit
memory/560-0-0x0000000074BB2000-0x0000000074BB3000-memory.dmp

Filesize
4KB

Download
memory/560-1-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/560-2-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/560-13-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/1972-12-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/1972-15-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/1972-14-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/1972-16-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads