njrat | 313662b6a9b6613afb7c3b37a2141d94bebe5e169dbd4c8a773d33cb6381f9d3

General

Target

313662b6a9b6613afb7c3b37a2141d94bebe5e169dbd4c8a773d33cb6381f9d3.exe
Size

29KB
MD5

ab8a42aea9c378614d53d141878b2f27
SHA1

49dac93e91fc8aecbf364113af01cb91fb7dac31
SHA256

313662b6a9b6613afb7c3b37a2141d94bebe5e169dbd4c8a773d33cb6381f9d3
SHA512

4ece3d425c62b223641a6eb458475fcf8b88fb7605ee097780744d206907ce39329dee34018ed80f317a12884daf330b8233e0a2486edff19d5b2a73f15a3dfd
SSDEEP

384:aUHEBl7p3hUw2s7bD55gEKemqDSqre/IDGBsbh0w4wlAokw9OhgOL1vYRGOZzWZz:K7bUw2C3kEcqNreHBKh0p29SgRQNx

Score

10^/10

njrat bust3d discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

bust3d

C2

10.11.12.213:32000

Mutex

e303f2aa81ce0ce9f1459769fc7d89ee

Attributes

reg_key
e303f2aa81ce0ce9f1459769fc7d89ee
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
1548	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e303f2aa81ce0ce9f1459769fc7d89ee.exe	winUpdate.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e303f2aa81ce0ce9f1459769fc7d89ee.exe	winUpdate.exe

Executes dropped EXE 1 IoCs

pid	Process
1800	winUpdate.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\e303f2aa81ce0ce9f1459769fc7d89ee = "\"C:\\Windows\\winUpdate.exe\" .."	winUpdate.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\e303f2aa81ce0ce9f1459769fc7d89ee = "\"C:\\Windows\\winUpdate.exe\" .."	winUpdate.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\winUpdate.exe	313662b6a9b6613afb7c3b37a2141d94bebe5e169dbd4c8a773d33cb6381f9d3.exe
File opened for modification	C:\Windows\winUpdate.exe	313662b6a9b6613afb7c3b37a2141d94bebe5e169dbd4c8a773d33cb6381f9d3.exe
File created	C:\Windows\winUpdate.exe.tmp	winUpdate.exe
File opened for modification	C:\Windows\winUpdate.exe.tmp	winUpdate.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	winUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	313662b6a9b6613afb7c3b37a2141d94bebe5e169dbd4c8a773d33cb6381f9d3.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe
1800	winUpdate.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1800	winUpdate.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 1800	1968	313662b6a9b6613afb7c3b37a2141d94bebe5e169dbd4c8a773d33cb6381f9d3.exe	30
PID 1968 wrote to memory of 1800	1968	313662b6a9b6613afb7c3b37a2141d94bebe5e169dbd4c8a773d33cb6381f9d3.exe	30
PID 1968 wrote to memory of 1800	1968	313662b6a9b6613afb7c3b37a2141d94bebe5e169dbd4c8a773d33cb6381f9d3.exe	30
PID 1968 wrote to memory of 1800	1968	313662b6a9b6613afb7c3b37a2141d94bebe5e169dbd4c8a773d33cb6381f9d3.exe	30
PID 1968 wrote to memory of 1800	1968	313662b6a9b6613afb7c3b37a2141d94bebe5e169dbd4c8a773d33cb6381f9d3.exe	30
PID 1968 wrote to memory of 1800	1968	313662b6a9b6613afb7c3b37a2141d94bebe5e169dbd4c8a773d33cb6381f9d3.exe	30
PID 1968 wrote to memory of 1800	1968	313662b6a9b6613afb7c3b37a2141d94bebe5e169dbd4c8a773d33cb6381f9d3.exe	30
PID 1800 wrote to memory of 1548	1800	winUpdate.exe	31
PID 1800 wrote to memory of 1548	1800	winUpdate.exe	31
PID 1800 wrote to memory of 1548	1800	winUpdate.exe	31
PID 1800 wrote to memory of 1548	1800	winUpdate.exe	31

C:\Users\Admin\AppData\Local\Temp\313662b6a9b6613afb7c3b37a2141d94bebe5e169dbd4c8a773d33cb6381f9d3.exe
"C:\Users\Admin\AppData\Local\Temp\313662b6a9b6613afb7c3b37a2141d94bebe5e169dbd4c8a773d33cb6381f9d3.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Windows\winUpdate.exe
  "C:\Windows\winUpdate.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1800
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Windows\winUpdate.exe" "winUpdate.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:1548

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

System Information Discovery

1

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:\Windows\winUpdate.exe

Filesize
29KB

MD5
ab8a42aea9c378614d53d141878b2f27

SHA1
49dac93e91fc8aecbf364113af01cb91fb7dac31

SHA256
313662b6a9b6613afb7c3b37a2141d94bebe5e169dbd4c8a773d33cb6381f9d3

SHA512
4ece3d425c62b223641a6eb458475fcf8b88fb7605ee097780744d206907ce39329dee34018ed80f317a12884daf330b8233e0a2486edff19d5b2a73f15a3dfd

Download Submit
memory/1800-11-0x00000000749B0000-0x0000000074F5B000-memory.dmp

Filesize
5.7MB

Download
memory/1800-10-0x00000000749B0000-0x0000000074F5B000-memory.dmp

Filesize
5.7MB

Download
memory/1800-13-0x00000000749B0000-0x0000000074F5B000-memory.dmp

Filesize
5.7MB

Download
memory/1968-0-0x00000000749B1000-0x00000000749B2000-memory.dmp

Filesize
4KB

Download
memory/1968-1-0x00000000749B0000-0x0000000074F5B000-memory.dmp

Filesize
5.7MB

Download
memory/1968-2-0x00000000749B0000-0x0000000074F5B000-memory.dmp

Filesize
5.7MB

Download
memory/1968-9-0x00000000749B0000-0x0000000074F5B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads