njrat | b2d090c9279fd27fa992ed729f8aa6311a220358cea1b0f9f72245e2c3ab62df

General

Target

b2d090c9279fd27fa992ed729f8aa6311a220358cea1b0f9f72245e2c3ab62dfN.exe
Size

23KB
MD5

fb451379d4a930fa6d32653df80f04c0
SHA1

5b4415ed12c887fa9654e2020a2cbba35caeb2d5
SHA256

b2d090c9279fd27fa992ed729f8aa6311a220358cea1b0f9f72245e2c3ab62df
SHA512

845d2979721f37c3d8c3662b74e0ff018d5230e98c1a53fc76ed49e9f17f7bcfc85184d849e8d4e14f6194662b05bfed49d172f9a72a5859e8fef1a1039f42ed
SSDEEP

384:D8aY1ia0N/IH+WUiWiLcXyUTly2Rc87po6ngB8W+tqlf5mRvR6JZlbw8hqIusZzW:q1Re/E+WUiW6ci6NR7tZRpcnu/

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
1912	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	b2d090c9279fd27fa992ed729f8aa6311a220358cea1b0f9f72245e2c3ab62dfN.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\626e4dfbf3e3dd60d6fbf80bed03d249.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\626e4dfbf3e3dd60d6fbf80bed03d249.exe	server.exe

Executes dropped EXE 1 IoCs

pid	Process
2220	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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\626e4dfbf3e3dd60d6fbf80bed03d249 = "\"C:\\ProgramData\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\626e4dfbf3e3dd60d6fbf80bed03d249 = "\"C:\\ProgramData\\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 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	b2d090c9279fd27fa992ed729f8aa6311a220358cea1b0f9f72245e2c3ab62dfN.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	2220	server.exe
Token: 33	2220	server.exe
Token: SeIncBasePriorityPrivilege	2220	server.exe
Token: 33	2220	server.exe
Token: SeIncBasePriorityPrivilege	2220	server.exe
Token: 33	2220	server.exe
Token: SeIncBasePriorityPrivilege	2220	server.exe
Token: 33	2220	server.exe
Token: SeIncBasePriorityPrivilege	2220	server.exe
Token: 33	2220	server.exe
Token: SeIncBasePriorityPrivilege	2220	server.exe
Token: 33	2220	server.exe
Token: SeIncBasePriorityPrivilege	2220	server.exe
Token: 33	2220	server.exe
Token: SeIncBasePriorityPrivilege	2220	server.exe
Token: 33	2220	server.exe
Token: SeIncBasePriorityPrivilege	2220	server.exe
Token: 33	2220	server.exe
Token: SeIncBasePriorityPrivilege	2220	server.exe
Token: 33	2220	server.exe
Token: SeIncBasePriorityPrivilege	2220	server.exe
Token: 33	2220	server.exe
Token: SeIncBasePriorityPrivilege	2220	server.exe
Token: 33	2220	server.exe
Token: SeIncBasePriorityPrivilege	2220	server.exe
Token: 33	2220	server.exe
Token: SeIncBasePriorityPrivilege	2220	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2988 wrote to memory of 2220	2988	b2d090c9279fd27fa992ed729f8aa6311a220358cea1b0f9f72245e2c3ab62dfN.exe	84
PID 2988 wrote to memory of 2220	2988	b2d090c9279fd27fa992ed729f8aa6311a220358cea1b0f9f72245e2c3ab62dfN.exe	84
PID 2988 wrote to memory of 2220	2988	b2d090c9279fd27fa992ed729f8aa6311a220358cea1b0f9f72245e2c3ab62dfN.exe	84
PID 2220 wrote to memory of 1912	2220	server.exe	88
PID 2220 wrote to memory of 1912	2220	server.exe	88
PID 2220 wrote to memory of 1912	2220	server.exe	88

C:\Users\Admin\AppData\Local\Temp\b2d090c9279fd27fa992ed729f8aa6311a220358cea1b0f9f72245e2c3ab62dfN.exe
"C:\Users\Admin\AppData\Local\Temp\b2d090c9279fd27fa992ed729f8aa6311a220358cea1b0f9f72245e2c3ab62dfN.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2988
- C:\ProgramData\server.exe
  "C:\ProgramData\server.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:2220
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\ProgramData\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:1912

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\server.exe

Filesize
23KB

MD5
fb451379d4a930fa6d32653df80f04c0

SHA1
5b4415ed12c887fa9654e2020a2cbba35caeb2d5

SHA256
b2d090c9279fd27fa992ed729f8aa6311a220358cea1b0f9f72245e2c3ab62df

SHA512
845d2979721f37c3d8c3662b74e0ff018d5230e98c1a53fc76ed49e9f17f7bcfc85184d849e8d4e14f6194662b05bfed49d172f9a72a5859e8fef1a1039f42ed

Download Submit
memory/2220-12-0x00000000750E0000-0x0000000075691000-memory.dmp

Filesize
5.7MB

Download
memory/2220-14-0x00000000750E0000-0x0000000075691000-memory.dmp

Filesize
5.7MB

Download
memory/2220-16-0x00000000750E0000-0x0000000075691000-memory.dmp

Filesize
5.7MB

Download
memory/2988-0-0x00000000750E2000-0x00000000750E3000-memory.dmp

Filesize
4KB

Download
memory/2988-1-0x00000000750E0000-0x0000000075691000-memory.dmp

Filesize
5.7MB

Download
memory/2988-2-0x00000000750E0000-0x0000000075691000-memory.dmp

Filesize
5.7MB

Download
memory/2988-13-0x00000000750E0000-0x0000000075691000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads