njrat | d363d69f8947b9f5bf764be843fac0fff046bfad8fc11ca742cdf154580af3ec

General

Target

Lammer.exe
Size

23KB
MD5

4dce52dbc5ba59345d903b75dc4f5744
SHA1

2a60662589763af37112be6f6a106e0cdf9e1ef1
SHA256

d363d69f8947b9f5bf764be843fac0fff046bfad8fc11ca742cdf154580af3ec
SHA512

c64dc39aeae9a1dcedf9e92528cf5559dd5c8c0ba371e4440306cd475bb0188e94e5c29dfc0f2dfd6a80b0eacb4c27fecf6ead2cab976b64515023a227a3dcdf
SSDEEP

384:7QeCo2zmZbQHkJeCdUwBvQ61gjuQBnB9mRvR6JZlbw8hqIusZzZEfk:85yBVd7Rpcnuxk

Score

10^/10

njrat defense_evasion discovery 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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1332	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-1-5-21-1898866115-3160784972-1217720036-1000\Control Panel\International\Geo\Nation	Lammer.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4bb89cc54f6ee116b30b245f35856c5a.exe	Registry.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4bb89cc54f6ee116b30b245f35856c5a.exe	Registry.exe

Executes dropped EXE 1 IoCs

pid	Process
1328	Registry.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-1-5-21-1898866115-3160784972-1217720036-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\4bb89cc54f6ee116b30b245f35856c5a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Registry.exe\" .."	Registry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\4bb89cc54f6ee116b30b245f35856c5a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Registry.exe\" .."	Registry.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	Lammer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Registry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	1328	Registry.exe
Token: 33	1328	Registry.exe
Token: SeIncBasePriorityPrivilege	1328	Registry.exe
Token: 33	1328	Registry.exe
Token: SeIncBasePriorityPrivilege	1328	Registry.exe
Token: 33	1328	Registry.exe
Token: SeIncBasePriorityPrivilege	1328	Registry.exe
Token: 33	1328	Registry.exe
Token: SeIncBasePriorityPrivilege	1328	Registry.exe
Token: 33	1328	Registry.exe
Token: SeIncBasePriorityPrivilege	1328	Registry.exe
Token: 33	1328	Registry.exe
Token: SeIncBasePriorityPrivilege	1328	Registry.exe
Token: 33	1328	Registry.exe
Token: SeIncBasePriorityPrivilege	1328	Registry.exe
Token: 33	1328	Registry.exe
Token: SeIncBasePriorityPrivilege	1328	Registry.exe
Token: 33	1328	Registry.exe
Token: SeIncBasePriorityPrivilege	1328	Registry.exe
Token: 33	1328	Registry.exe
Token: SeIncBasePriorityPrivilege	1328	Registry.exe
Token: 33	1328	Registry.exe
Token: SeIncBasePriorityPrivilege	1328	Registry.exe
Token: 33	1328	Registry.exe
Token: SeIncBasePriorityPrivilege	1328	Registry.exe
Token: 33	1328	Registry.exe
Token: SeIncBasePriorityPrivilege	1328	Registry.exe
Token: 33	1328	Registry.exe
Token: SeIncBasePriorityPrivilege	1328	Registry.exe
Token: 33	1328	Registry.exe
Token: SeIncBasePriorityPrivilege	1328	Registry.exe
Token: 33	1328	Registry.exe
Token: SeIncBasePriorityPrivilege	1328	Registry.exe
Token: 33	1328	Registry.exe
Token: SeIncBasePriorityPrivilege	1328	Registry.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4436 wrote to memory of 1328	4436	Lammer.exe	87
PID 4436 wrote to memory of 1328	4436	Lammer.exe	87
PID 4436 wrote to memory of 1328	4436	Lammer.exe	87
PID 1328 wrote to memory of 1332	1328	Registry.exe	90
PID 1328 wrote to memory of 1332	1328	Registry.exe	90
PID 1328 wrote to memory of 1332	1328	Registry.exe	90

C:\Users\Admin\AppData\Local\Temp\Lammer.exe
"C:\Users\Admin\AppData\Local\Temp\Lammer.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4436
- C:\Users\Admin\AppData\Local\Temp\Registry.exe
  "C:\Users\Admin\AppData\Local\Temp\Registry.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:1328
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Registry.exe" "Registry.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:1332

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\Registry.exe

Filesize
23KB

MD5
4dce52dbc5ba59345d903b75dc4f5744

SHA1
2a60662589763af37112be6f6a106e0cdf9e1ef1

SHA256
d363d69f8947b9f5bf764be843fac0fff046bfad8fc11ca742cdf154580af3ec

SHA512
c64dc39aeae9a1dcedf9e92528cf5559dd5c8c0ba371e4440306cd475bb0188e94e5c29dfc0f2dfd6a80b0eacb4c27fecf6ead2cab976b64515023a227a3dcdf

Download Submit
memory/1328-15-0x0000000075280000-0x0000000075831000-memory.dmp

Filesize
5.7MB

Download
memory/1328-17-0x0000000075280000-0x0000000075831000-memory.dmp

Filesize
5.7MB

Download
memory/1328-18-0x0000000075280000-0x0000000075831000-memory.dmp

Filesize
5.7MB

Download
memory/4436-0-0x0000000075282000-0x0000000075283000-memory.dmp

Filesize
4KB

Download
memory/4436-1-0x0000000075280000-0x0000000075831000-memory.dmp

Filesize
5.7MB

Download
memory/4436-2-0x0000000075280000-0x0000000075831000-memory.dmp

Filesize
5.7MB

Download
memory/4436-16-0x0000000075280000-0x0000000075831000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads