njrat | ecedda5e5b8289ca6a2934482d13106d0c5faa7cb5fb7b2f1685bc2cc4147f02

General

Target

2INJECT BYPASS BP.exe
Size

141KB
MD5

80d2c46d0860242b374567bee889b360
SHA1

1824af121d54fb6a9f27e60177e6dfd51a1e5005
SHA256

ecedda5e5b8289ca6a2934482d13106d0c5faa7cb5fb7b2f1685bc2cc4147f02
SHA512

cfc23f37fe2ef6be6de9445bd969eb1d7edb0289aa1180f1f42ee3ef0214fc986e8ea07d458c307f09b66df387c97c3ac8e411b98c192b3f5559b8eabb3c563f
SSDEEP

3072:osSasVMY3+pWOwarL59GoPTMajtQ9RWVtoH8qDT4bfGFkGS+b03mD7XY:oBVMY3+p9l7tQKfqDTcYkFmD7X

Score

10^/10

njrat hacked defense_evasion discovery persistence trojan

Malware Config

Extracted

Family

njrat

Version

Platinum

Botnet

HacKed

C2

127.0.0.1:36597

Mutex

realtek.exe

Attributes

reg_key
realtek.exe
splitter
|Ghost|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

.NET Reactor proctector 1 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral1/memory/5096-1-0x0000000000520000-0x000000000054A000-memory.dmp	net_reactor

Checks computer location settings 2 TTPs 2 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-1-5-21-2629364133-3182087385-364449604-1000\Control Panel\International\Geo\Nation	2INJECT BYPASS BP.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\Control Panel\International\Geo\Nation	njrat client.exe

Drops startup file 3 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2596	njrat client.exe
5000	realtek.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-1-5-21-2629364133-3182087385-364449604-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\realtek.exe = "\"C:\\Users\\Admin\\realtek.exe\" .."	realtek.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\realtek.exe = "\"C:\\Users\\Admin\\realtek.exe\" .."	realtek.exe

Obfuscated Files or Information: Command Obfuscation 1 TTPs
Adversaries may obfuscate content during command execution to impede detection.
defense_evasion

Command Obfuscation
T1027.010
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	realtek.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	choice.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	njrat client.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4744	schtasks.exe
3952	schtasks.exe

Suspicious behavior: EnumeratesProcesses 39 IoCs

pid	Process
2224	powershell.exe
2224	powershell.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe
5000	realtek.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeDebugPrivilege	2224	powershell.exe
Token: SeDebugPrivilege	5000	realtek.exe
Token: 33	5000	realtek.exe
Token: SeIncBasePriorityPrivilege	5000	realtek.exe
Token: 33	5000	realtek.exe
Token: SeIncBasePriorityPrivilege	5000	realtek.exe
Token: 33	5000	realtek.exe
Token: SeIncBasePriorityPrivilege	5000	realtek.exe
Token: 33	5000	realtek.exe
Token: SeIncBasePriorityPrivilege	5000	realtek.exe
Token: 33	5000	realtek.exe
Token: SeIncBasePriorityPrivilege	5000	realtek.exe
Token: 33	5000	realtek.exe
Token: SeIncBasePriorityPrivilege	5000	realtek.exe
Token: 33	5000	realtek.exe
Token: SeIncBasePriorityPrivilege	5000	realtek.exe
Token: 33	5000	realtek.exe
Token: SeIncBasePriorityPrivilege	5000	realtek.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 5096 wrote to memory of 2224	5096	2INJECT BYPASS BP.exe	85
PID 5096 wrote to memory of 2224	5096	2INJECT BYPASS BP.exe	85
PID 5096 wrote to memory of 2596	5096	2INJECT BYPASS BP.exe	87
PID 5096 wrote to memory of 2596	5096	2INJECT BYPASS BP.exe	87
PID 5096 wrote to memory of 2596	5096	2INJECT BYPASS BP.exe	87
PID 2596 wrote to memory of 4744	2596	njrat client.exe	88
PID 2596 wrote to memory of 4744	2596	njrat client.exe	88
PID 2596 wrote to memory of 4744	2596	njrat client.exe	88
PID 2596 wrote to memory of 5000	2596	njrat client.exe	98
PID 2596 wrote to memory of 5000	2596	njrat client.exe	98
PID 2596 wrote to memory of 5000	2596	njrat client.exe	98
PID 2596 wrote to memory of 4704	2596	njrat client.exe	99
PID 2596 wrote to memory of 4704	2596	njrat client.exe	99
PID 2596 wrote to memory of 4704	2596	njrat client.exe	99
PID 5000 wrote to memory of 3952	5000	realtek.exe	101
PID 5000 wrote to memory of 3952	5000	realtek.exe	101
PID 5000 wrote to memory of 3952	5000	realtek.exe	101
PID 4704 wrote to memory of 1520	4704	cmd.exe	103
PID 4704 wrote to memory of 1520	4704	cmd.exe	103
PID 4704 wrote to memory of 1520	4704	cmd.exe	103

C:\Users\Admin\AppData\Local\Temp\2INJECT BYPASS BP.exe
"C:\Users\Admin\AppData\Local\Temp\2INJECT BYPASS BP.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5096
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHcAdwBiACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAG4AcQBsACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAGIAeABuACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAG0AbQB3ACMAPgA="
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2224
- C:\Users\Admin\njrat client.exe
  "C:\Users\Admin\njrat client.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2596
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc onstart /mo 1 /tn nyan /tr C:\Users\Admin\realtek.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4744
- - C:\Users\Admin\realtek.exe
    "C:\Users\Admin\realtek.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:5000
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /sc onstart /mo 1 /tn nyan /tr C:\Users\Admin\realtek.exe
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:3952
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C choice /C Y /N /D Y /T 5 & Del "C:\Users\Admin\njrat client.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4704
  - - C:\Windows\SysWOW64\choice.exe
      choice /C Y /N /D Y /T 5
      4⤵
      System Location Discovery: System Language Discovery
      PID:1520

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Obfuscated Files or Information

1

T1027

Command Obfuscation

1

T1027.010

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\__PSScriptPolicyTest_jfp4dwgs.pnj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\njrat client.exe

Filesize
61KB

MD5
2e035b66646cbe48b7258081d5c8015c

SHA1
3f97c139013951c074516f7f3e5336f68a55e9b0

SHA256
2758dde61d7d514e5154ae6c54ea12514f0d16a14e4849e711a958b253e6642f

SHA512
7cd2d03e92fca485565548ec32fe1b971fb49faa120affd3ebfcc95ceaac3f9492aa2c712f56f425651b33e61938e52398aa0223b109cca855c51e3e65ba3d31

Download Submit
memory/2224-39-0x00007FF8B2A50000-0x00007FF8B3511000-memory.dmp

Filesize
10.8MB

Download
memory/2224-32-0x00007FF8B2A50000-0x00007FF8B3511000-memory.dmp

Filesize
10.8MB

Download
memory/2224-36-0x00007FF8B2A50000-0x00007FF8B3511000-memory.dmp

Filesize
10.8MB

Download
memory/2224-30-0x00000211A8340000-0x00000211A8362000-memory.dmp

Filesize
136KB

Download
memory/2224-31-0x00007FF8B2A50000-0x00007FF8B3511000-memory.dmp

Filesize
10.8MB

Download
memory/2596-34-0x00000000058F0000-0x000000000598C000-memory.dmp

Filesize
624KB

Download
memory/2596-33-0x0000000000F00000-0x0000000000F16000-memory.dmp

Filesize
88KB

Download
memory/2596-35-0x0000000005F40000-0x00000000064E4000-memory.dmp

Filesize
5.6MB

Download
memory/5000-62-0x00000000052F0000-0x0000000005382000-memory.dmp

Filesize
584KB

Download
memory/5000-63-0x00000000052B0000-0x00000000052BA000-memory.dmp

Filesize
40KB

Download
memory/5096-2-0x00007FF8B2A50000-0x00007FF8B3511000-memory.dmp

Filesize
10.8MB

Download
memory/5096-1-0x0000000000520000-0x000000000054A000-memory.dmp

Filesize
168KB

Download
memory/5096-0-0x00007FF8B2A53000-0x00007FF8B2A55000-memory.dmp

Filesize
8KB

Download
memory/5096-58-0x00007FF8B2A50000-0x00007FF8B3511000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads