njrat | 4e5f87a86f5857c39f3d3ac954425ab4be4a2d685d559ba6221fe605b97d0d71

General

Target

4e5f87a86f5857c39f3d3ac954425ab4be4a2d685d559ba6221fe605b97d0d71.exe
Size

36KB
MD5

5d584e11f24d562eb1c7f62194b0fc22
SHA1

58fe1759358180144f1f69f27aefe29f4135ca91
SHA256

4e5f87a86f5857c39f3d3ac954425ab4be4a2d685d559ba6221fe605b97d0d71
SHA512

94526a3e042f17677083cc796a18cfa0f07b016640be6aa90bf4d6fe3a93f32425b36fe18e3920f5da4da4f42b6152d7dfdd82b4782585da6c1b89b0bda1e3b0
SSDEEP

768:GEv5CfJ9ixM3b+5oZTQWBC0XDxtcuuhfCV0aBQMDTjzGnn:GEvsfKxB5oZTF7+PfC6aBQQTkn

Score

10^/10

njrat hacker evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

Hacker

C2

154.176.114.158:1177

Mutex

8b8934ec24fc05c5f20511aa61ac2fa9

Attributes

reg_key
8b8934ec24fc05c5f20511aa61ac2fa9
splitter
|'|'|

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
4008	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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	4e5f87a86f5857c39f3d3ac954425ab4be4a2d685d559ba6221fe605b97d0d71.exe

Executes dropped EXE 1 IoCs

pid	Process
1308	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\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\8b8934ec24fc05c5f20511aa61ac2fa9 = "\"C:\\Users\\Admin\\AppData\\Roaming\\Server.exe\" .."	Server.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\8b8934ec24fc05c5f20511aa61ac2fa9 = "\"C:\\Users\\Admin\\AppData\\Roaming\\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\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe

Suspicious behavior: EnumeratesProcesses 36 IoCs

pid	Process
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe
1308	Server.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1308	Server.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1608 wrote to memory of 1308	1608	4e5f87a86f5857c39f3d3ac954425ab4be4a2d685d559ba6221fe605b97d0d71.exe	83
PID 1608 wrote to memory of 1308	1608	4e5f87a86f5857c39f3d3ac954425ab4be4a2d685d559ba6221fe605b97d0d71.exe	83
PID 1308 wrote to memory of 4008	1308	Server.exe	84
PID 1308 wrote to memory of 4008	1308	Server.exe	84

C:\Users\Admin\AppData\Local\Temp\4e5f87a86f5857c39f3d3ac954425ab4be4a2d685d559ba6221fe605b97d0d71.exe
"C:\Users\Admin\AppData\Local\Temp\4e5f87a86f5857c39f3d3ac954425ab4be4a2d685d559ba6221fe605b97d0d71.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1608
- C:\Users\Admin\AppData\Roaming\Server.exe
  "C:\Users\Admin\AppData\Roaming\Server.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1308
- - C:\Windows\SYSTEM32\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Server.exe" "Server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    PID:4008

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Server.exe

Filesize
36KB

MD5
5d584e11f24d562eb1c7f62194b0fc22

SHA1
58fe1759358180144f1f69f27aefe29f4135ca91

SHA256
4e5f87a86f5857c39f3d3ac954425ab4be4a2d685d559ba6221fe605b97d0d71

SHA512
94526a3e042f17677083cc796a18cfa0f07b016640be6aa90bf4d6fe3a93f32425b36fe18e3920f5da4da4f42b6152d7dfdd82b4782585da6c1b89b0bda1e3b0

Download Submit
memory/1308-17-0x00007FFF30BE0000-0x00007FFF31581000-memory.dmp

Filesize
9.6MB

Download
memory/1308-16-0x00007FFF30BE0000-0x00007FFF31581000-memory.dmp

Filesize
9.6MB

Download
memory/1308-18-0x00007FFF30BE0000-0x00007FFF31581000-memory.dmp

Filesize
9.6MB

Download
memory/1308-19-0x000000001C140000-0x000000001C1DC000-memory.dmp

Filesize
624KB

Download
memory/1308-20-0x0000000000F10000-0x0000000000F18000-memory.dmp

Filesize
32KB

Download
memory/1308-21-0x00007FFF30BE0000-0x00007FFF31581000-memory.dmp

Filesize
9.6MB

Download
memory/1608-1-0x00007FFF30BE0000-0x00007FFF31581000-memory.dmp

Filesize
9.6MB

Download
memory/1608-3-0x00007FFF30BE0000-0x00007FFF31581000-memory.dmp

Filesize
9.6MB

Download
memory/1608-4-0x0000000000910000-0x000000000091E000-memory.dmp

Filesize
56KB

Download
memory/1608-5-0x000000001BB50000-0x000000001BBF6000-memory.dmp

Filesize
664KB

Download
memory/1608-2-0x000000001B680000-0x000000001BB4E000-memory.dmp

Filesize
4.8MB

Download
memory/1608-15-0x00007FFF30BE0000-0x00007FFF31581000-memory.dmp

Filesize
9.6MB

Download
memory/1608-0-0x00007FFF30E95000-0x00007FFF30E96000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads