njrat | 1a7705e4ee662a1a109036423bda269d1371656c06768e124fe7bd085cf08e09

General

Target

Lammer.exe
Size

23KB
MD5

a243b07b76f9c3a6e48cd979b9810ffb
SHA1

05b3f0104e0e21292a03caca19dddaccf09f4197
SHA256

1a7705e4ee662a1a109036423bda269d1371656c06768e124fe7bd085cf08e09
SHA512

cd3d37b29bbb8683fc45f5203857d6ef72a799b024dfdd10214388013e420f7c4590ae58f51d3b331a14547a3c94e725dbf53ff461f5a09b03942c4f0758bcee
SSDEEP

384:2MK6b2GZsx/Yr1+liORH1kcPFQ6Lg9gSOYRr9mRvR6JZlbw8hqIusZzZXA78:hb9glF51LRpcnuwAw

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
912	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-1-5-21-3756129449-3121373848-4276368241-1000\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\277eeba8e4d607fd5a1ce4ab98deed79.exe	Trojan.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\277eeba8e4d607fd5a1ce4ab98deed79.exe	Trojan.exe

Executes dropped EXE 1 IoCs

pid	Process
4148	Trojan.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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\277eeba8e4d607fd5a1ce4ab98deed79 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Trojan.exe\" .."	Trojan.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\277eeba8e4d607fd5a1ce4ab98deed79 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Trojan.exe\" .."	Trojan.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Lammer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Trojan.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	4148	Trojan.exe
Token: 33	4148	Trojan.exe
Token: SeIncBasePriorityPrivilege	4148	Trojan.exe
Token: 33	4148	Trojan.exe
Token: SeIncBasePriorityPrivilege	4148	Trojan.exe
Token: 33	4148	Trojan.exe
Token: SeIncBasePriorityPrivilege	4148	Trojan.exe
Token: 33	4148	Trojan.exe
Token: SeIncBasePriorityPrivilege	4148	Trojan.exe
Token: 33	4148	Trojan.exe
Token: SeIncBasePriorityPrivilege	4148	Trojan.exe
Token: 33	4148	Trojan.exe
Token: SeIncBasePriorityPrivilege	4148	Trojan.exe
Token: 33	4148	Trojan.exe
Token: SeIncBasePriorityPrivilege	4148	Trojan.exe
Token: 33	4148	Trojan.exe
Token: SeIncBasePriorityPrivilege	4148	Trojan.exe
Token: 33	4148	Trojan.exe
Token: SeIncBasePriorityPrivilege	4148	Trojan.exe
Token: 33	4148	Trojan.exe
Token: SeIncBasePriorityPrivilege	4148	Trojan.exe
Token: 33	4148	Trojan.exe
Token: SeIncBasePriorityPrivilege	4148	Trojan.exe
Token: 33	4148	Trojan.exe
Token: SeIncBasePriorityPrivilege	4148	Trojan.exe
Token: 33	4148	Trojan.exe
Token: SeIncBasePriorityPrivilege	4148	Trojan.exe
Token: 33	4148	Trojan.exe
Token: SeIncBasePriorityPrivilege	4148	Trojan.exe
Token: 33	4148	Trojan.exe
Token: SeIncBasePriorityPrivilege	4148	Trojan.exe
Token: 33	4148	Trojan.exe
Token: SeIncBasePriorityPrivilege	4148	Trojan.exe
Token: 33	4148	Trojan.exe
Token: SeIncBasePriorityPrivilege	4148	Trojan.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4072 wrote to memory of 4148	4072	Lammer.exe	83
PID 4072 wrote to memory of 4148	4072	Lammer.exe	83
PID 4072 wrote to memory of 4148	4072	Lammer.exe	83
PID 4148 wrote to memory of 912	4148	Trojan.exe	84
PID 4148 wrote to memory of 912	4148	Trojan.exe	84
PID 4148 wrote to memory of 912	4148	Trojan.exe	84

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:4072
- C:\Users\Admin\AppData\Local\Temp\Trojan.exe
  "C:\Users\Admin\AppData\Local\Temp\Trojan.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:4148
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Trojan.exe" "Trojan.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:912

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\Trojan.exe

Filesize
23KB

MD5
a243b07b76f9c3a6e48cd979b9810ffb

SHA1
05b3f0104e0e21292a03caca19dddaccf09f4197

SHA256
1a7705e4ee662a1a109036423bda269d1371656c06768e124fe7bd085cf08e09

SHA512
cd3d37b29bbb8683fc45f5203857d6ef72a799b024dfdd10214388013e420f7c4590ae58f51d3b331a14547a3c94e725dbf53ff461f5a09b03942c4f0758bcee

Download Submit
memory/4072-0-0x0000000075562000-0x0000000075563000-memory.dmp

Filesize
4KB

Download
memory/4072-1-0x0000000075560000-0x0000000075B11000-memory.dmp

Filesize
5.7MB

Download
memory/4072-2-0x0000000075560000-0x0000000075B11000-memory.dmp

Filesize
5.7MB

Download
memory/4072-12-0x0000000075560000-0x0000000075B11000-memory.dmp

Filesize
5.7MB

Download
memory/4148-13-0x0000000075560000-0x0000000075B11000-memory.dmp

Filesize
5.7MB

Download
memory/4148-14-0x0000000075560000-0x0000000075B11000-memory.dmp

Filesize
5.7MB

Download
memory/4148-16-0x0000000075560000-0x0000000075B11000-memory.dmp

Filesize
5.7MB

Download
memory/4148-17-0x0000000075560000-0x0000000075B11000-memory.dmp

Filesize
5.7MB

Download
memory/4148-18-0x0000000075560000-0x0000000075B11000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads