njrat | 021949b2262a1f7d726c781b8c97fdc5575aa47896d50fc9f219b3b917acb9d1

General

Target

021949b2262a1f7d726c781b8c97fdc5575aa47896d50fc9f219b3b917acb9d1.exe
Size

23KB
MD5

61e8f0db5df386c96963bfc588efe149
SHA1

0e45b53e1c6eb706da05a60a401ed6d12fead55b
SHA256

021949b2262a1f7d726c781b8c97fdc5575aa47896d50fc9f219b3b917acb9d1
SHA512

e7ced392c2b2fd021a2d8101c616efa3bfe1873b9fec268efc784f20e9778309f996112dbb8ed065ef7a0250d9514fa151c6d5c0c965dbfa7a6e96e5a5690575
SSDEEP

384:ioWtkEwn65rgjAsGipk55D16xgXakhbZD0mRvR6JZlbw8hqIusZzZIpx:l7O89p2rRpcnufx

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
4556	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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	021949b2262a1f7d726c781b8c97fdc5575aa47896d50fc9f219b3b917acb9d1.exe

Executes dropped EXE 1 IoCs

pid	Process
2592	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-1-5-21-2878641211-696417878-3864914810-1000\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	021949b2262a1f7d726c781b8c97fdc5575aa47896d50fc9f219b3b917acb9d1.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	2592	server.exe
Token: 33	2592	server.exe
Token: SeIncBasePriorityPrivilege	2592	server.exe
Token: 33	2592	server.exe
Token: SeIncBasePriorityPrivilege	2592	server.exe
Token: 33	2592	server.exe
Token: SeIncBasePriorityPrivilege	2592	server.exe
Token: 33	2592	server.exe
Token: SeIncBasePriorityPrivilege	2592	server.exe
Token: 33	2592	server.exe
Token: SeIncBasePriorityPrivilege	2592	server.exe
Token: 33	2592	server.exe
Token: SeIncBasePriorityPrivilege	2592	server.exe
Token: 33	2592	server.exe
Token: SeIncBasePriorityPrivilege	2592	server.exe
Token: 33	2592	server.exe
Token: SeIncBasePriorityPrivilege	2592	server.exe
Token: 33	2592	server.exe
Token: SeIncBasePriorityPrivilege	2592	server.exe
Token: 33	2592	server.exe
Token: SeIncBasePriorityPrivilege	2592	server.exe
Token: 33	2592	server.exe
Token: SeIncBasePriorityPrivilege	2592	server.exe
Token: 33	2592	server.exe
Token: SeIncBasePriorityPrivilege	2592	server.exe
Token: 33	2592	server.exe
Token: SeIncBasePriorityPrivilege	2592	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4068 wrote to memory of 2592	4068	021949b2262a1f7d726c781b8c97fdc5575aa47896d50fc9f219b3b917acb9d1.exe	84
PID 4068 wrote to memory of 2592	4068	021949b2262a1f7d726c781b8c97fdc5575aa47896d50fc9f219b3b917acb9d1.exe	84
PID 4068 wrote to memory of 2592	4068	021949b2262a1f7d726c781b8c97fdc5575aa47896d50fc9f219b3b917acb9d1.exe	84
PID 2592 wrote to memory of 4556	2592	server.exe	85
PID 2592 wrote to memory of 4556	2592	server.exe	85
PID 2592 wrote to memory of 4556	2592	server.exe	85

C:\Users\Admin\AppData\Local\Temp\021949b2262a1f7d726c781b8c97fdc5575aa47896d50fc9f219b3b917acb9d1.exe
"C:\Users\Admin\AppData\Local\Temp\021949b2262a1f7d726c781b8c97fdc5575aa47896d50fc9f219b3b917acb9d1.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4068
- 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:2592
- - 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:4556

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
61e8f0db5df386c96963bfc588efe149

SHA1
0e45b53e1c6eb706da05a60a401ed6d12fead55b

SHA256
021949b2262a1f7d726c781b8c97fdc5575aa47896d50fc9f219b3b917acb9d1

SHA512
e7ced392c2b2fd021a2d8101c616efa3bfe1873b9fec268efc784f20e9778309f996112dbb8ed065ef7a0250d9514fa151c6d5c0c965dbfa7a6e96e5a5690575

Download Submit
memory/2592-12-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/2592-14-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/2592-15-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/4068-0-0x0000000074FD2000-0x0000000074FD3000-memory.dmp

Filesize
4KB

Download
memory/4068-1-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/4068-2-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/4068-13-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads