njrat | b58ab675e6430d8d9eeb6d316a635f5eb62fb19cd1120b3d1376136df5c8a44e

General

Target

Payload.exe
Size

55KB
MD5

5c56be92df69c8add408d506c5532239
SHA1

0dad011e6ddbd559d30217bf8b9da634a72c2023
SHA256

b58ab675e6430d8d9eeb6d316a635f5eb62fb19cd1120b3d1376136df5c8a44e
SHA512

85ebfc2be987a011bb4db28842a90a7be26560ee843600f0b39b0805980ba27cc00db7cd635305dfdeecb6333576c6ba501fe0f79d56f0cbe8eaa12ecc3560cf
SSDEEP

1536:qPsoDnb4DNQ7SCCHDrwsNMDxXExI3pm9m:noDnEWOrHDrwsNMDxXExI3pm

Score

10^/10

njrat discovery persistence trojan

Malware Config

Signatures

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

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-1-5-21-584106483-899802418-1877852863-1000\Control Panel\International\Geo\Nation	Payload.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4c4f4a71cf4fc204c1ef58ead9ffcdec.exe	dllhost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4c4f4a71cf4fc204c1ef58ead9ffcdec.exe	dllhost.exe

Executes dropped EXE 1 IoCs

pid	Process
3024	dllhost.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\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\4c4f4a71cf4fc204c1ef58ead9ffcdec = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\dllhost.exe\" .."	dllhost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-584106483-899802418-1877852863-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\4c4f4a71cf4fc204c1ef58ead9ffcdec = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\dllhost.exe\" .."	dllhost.exe

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 5 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Payload.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dllhost.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4068	cmd.exe
2008	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2008	PING.EXE

Suspicious use of AdjustPrivilegeToken 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	3024	dllhost.exe
Token: 33	3024	dllhost.exe
Token: SeIncBasePriorityPrivilege	3024	dllhost.exe
Token: 33	3024	dllhost.exe
Token: SeIncBasePriorityPrivilege	3024	dllhost.exe
Token: 33	3024	dllhost.exe
Token: SeIncBasePriorityPrivilege	3024	dllhost.exe
Token: 33	3024	dllhost.exe
Token: SeIncBasePriorityPrivilege	3024	dllhost.exe
Token: 33	3024	dllhost.exe
Token: SeIncBasePriorityPrivilege	3024	dllhost.exe
Token: 33	3024	dllhost.exe
Token: SeIncBasePriorityPrivilege	3024	dllhost.exe
Token: 33	3024	dllhost.exe
Token: SeIncBasePriorityPrivilege	3024	dllhost.exe
Token: 33	3024	dllhost.exe
Token: SeIncBasePriorityPrivilege	3024	dllhost.exe
Token: 33	3024	dllhost.exe
Token: SeIncBasePriorityPrivilege	3024	dllhost.exe
Token: 33	3024	dllhost.exe
Token: SeIncBasePriorityPrivilege	3024	dllhost.exe
Token: 33	3024	dllhost.exe
Token: SeIncBasePriorityPrivilege	3024	dllhost.exe
Token: 33	3024	dllhost.exe
Token: SeIncBasePriorityPrivilege	3024	dllhost.exe
Token: 33	3024	dllhost.exe
Token: SeIncBasePriorityPrivilege	3024	dllhost.exe
Token: 33	3024	dllhost.exe
Token: SeIncBasePriorityPrivilege	3024	dllhost.exe
Token: 33	3024	dllhost.exe
Token: SeIncBasePriorityPrivilege	3024	dllhost.exe
Token: 33	3024	dllhost.exe
Token: SeIncBasePriorityPrivilege	3024	dllhost.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2556 wrote to memory of 3024	2556	Payload.exe	85
PID 2556 wrote to memory of 3024	2556	Payload.exe	85
PID 2556 wrote to memory of 3024	2556	Payload.exe	85
PID 3024 wrote to memory of 3876	3024	dllhost.exe	89
PID 3024 wrote to memory of 3876	3024	dllhost.exe	89
PID 3024 wrote to memory of 3876	3024	dllhost.exe	89
PID 3024 wrote to memory of 4068	3024	dllhost.exe	91
PID 3024 wrote to memory of 4068	3024	dllhost.exe	91
PID 3024 wrote to memory of 4068	3024	dllhost.exe	91
PID 4068 wrote to memory of 2008	4068	cmd.exe	93
PID 4068 wrote to memory of 2008	4068	cmd.exe	93
PID 4068 wrote to memory of 2008	4068	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\Payload.exe
"C:\Users\Admin\AppData\Local\Temp\Payload.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2556
- C:\Users\Admin\AppData\Local\Temp\dllhost.exe
  "C:\Users\Admin\AppData\Local\Temp\dllhost.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:3024
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /delete /tn CleanSweepCheck /f
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3876
- - C:\Windows\SysWOW64\cmd.exe
    cmd.exe /c ping 0 -n 2 & del "C:\Users\Admin\AppData\Local\Temp\dllhost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:4068
  - - C:\Windows\SysWOW64\PING.EXE
      ping 0 -n 2
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:2008

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

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\dllhost.exe

Filesize
55KB

MD5
5c56be92df69c8add408d506c5532239

SHA1
0dad011e6ddbd559d30217bf8b9da634a72c2023

SHA256
b58ab675e6430d8d9eeb6d316a635f5eb62fb19cd1120b3d1376136df5c8a44e

SHA512
85ebfc2be987a011bb4db28842a90a7be26560ee843600f0b39b0805980ba27cc00db7cd635305dfdeecb6333576c6ba501fe0f79d56f0cbe8eaa12ecc3560cf

Download Submit
memory/2556-0-0x00000000753A2000-0x00000000753A3000-memory.dmp

Filesize
4KB

Download
memory/2556-1-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/2556-2-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/2556-16-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/3024-15-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/3024-18-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/3024-17-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/3024-19-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/3024-20-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/3024-21-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/3024-23-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads