njrat | 24a6454cbfebd84b0cfb7d0fc0ec2c7f55bd1c9c58a885149dac151d3c5f02f3

General

Target

5ce0e5243691b94f82a7542be0e53243.exe
Size

1.1MB
MD5

5ce0e5243691b94f82a7542be0e53243
SHA1

90ee1a7d39a907c0818aabc87a07de90d3a73958
SHA256

24a6454cbfebd84b0cfb7d0fc0ec2c7f55bd1c9c58a885149dac151d3c5f02f3
SHA512

ce899bd04209c28b9e7aa3b31b75ff1620bde39470f02f902de67d3a2a8c989d37e635e3e01a631f15ea2e7fbf243b3d1172d154f7acd836abd86a68f5a76dce
SSDEEP

24576:v0Pzhh+oPYTreyJrpBpyq/l5eXcdzURv/fjRUqH/XnOKtyK:cnbsJBt5shnfFUqfXnOKty

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-1-5-21-2278412438-3475196406-3686434223-1000\Control Panel\International\Geo\Nation	5ce0e5243691b94f82a7542be0e53243.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
3944	Dllhost.exe
1500	Server.exe
3444	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\USER\S-1-5-21-2278412438-3475196406-3686434223-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Dllhost.exe\" .."	Dllhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Dllhost.exe\" .."	Dllhost.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 19 IoCs

pid	Process
5240	5ce0e5243691b94f82a7542be0e53243.exe
3944	Dllhost.exe
3944	Dllhost.exe
3944	Dllhost.exe
3944	Dllhost.exe
3944	Dllhost.exe
1500	Server.exe
3944	Dllhost.exe
1500	Server.exe
3944	Dllhost.exe
3944	Dllhost.exe
3944	Dllhost.exe
3944	Dllhost.exe
3944	Dllhost.exe
3444	Server.exe
3944	Dllhost.exe
3944	Dllhost.exe
3944	Dllhost.exe
3944	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	5ce0e5243691b94f82a7542be0e53243.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Dllhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Server.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
1080	schtasks.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
5240	5ce0e5243691b94f82a7542be0e53243.exe
3944	Dllhost.exe

Suspicious use of AdjustPrivilegeToken 31 IoCs

description	pid	Process
Token: SeDebugPrivilege	3944	Dllhost.exe
Token: 33	3944	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3944	Dllhost.exe
Token: 33	3944	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3944	Dllhost.exe
Token: 33	3944	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3944	Dllhost.exe
Token: 33	3944	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3944	Dllhost.exe
Token: 33	3944	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3944	Dllhost.exe
Token: 33	3944	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3944	Dllhost.exe
Token: 33	3944	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3944	Dllhost.exe
Token: 33	3944	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3944	Dllhost.exe
Token: 33	3944	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3944	Dllhost.exe
Token: 33	3944	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3944	Dllhost.exe
Token: 33	3944	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3944	Dllhost.exe
Token: 33	3944	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3944	Dllhost.exe
Token: 33	3944	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3944	Dllhost.exe
Token: 33	3944	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3944	Dllhost.exe
Token: 33	3944	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3944	Dllhost.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
5240	5ce0e5243691b94f82a7542be0e53243.exe
3944	Dllhost.exe
1500	Server.exe
3444	Server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5240 wrote to memory of 3944	5240	5ce0e5243691b94f82a7542be0e53243.exe	96
PID 5240 wrote to memory of 3944	5240	5ce0e5243691b94f82a7542be0e53243.exe	96
PID 5240 wrote to memory of 3944	5240	5ce0e5243691b94f82a7542be0e53243.exe	96
PID 3944 wrote to memory of 1080	3944	Dllhost.exe	99
PID 3944 wrote to memory of 1080	3944	Dllhost.exe	99
PID 3944 wrote to memory of 1080	3944	Dllhost.exe	99

C:\Users\Admin\AppData\Local\Temp\5ce0e5243691b94f82a7542be0e53243.exe
"C:\Users\Admin\AppData\Local\Temp\5ce0e5243691b94f82a7542be0e53243.exe"
1⤵
- Checks computer location settings
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5240
- 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
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3944
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1080

C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
1⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:1500

C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
1⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:3444

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

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\Microsoft\CLR_v4.0_32\UsageLogs\Server.exe.log

Filesize
507B

MD5
25d1b50e7c0d451f3d850eb54d27ca05

SHA1
a238807715c70a335f54e80d4855644b21a9e870

SHA256
650faa13e983c9046c9030f63a5fa1c33900432ec7cb3762e015da2e7c5b34a5

SHA512
4223a26b2fabefdf1c01443ccc7bd887464d27f02694379895a040c66db472d541218d501f1c01e1bd31012d079a31baf24e20882c32cf652a09a74e3bf385f5

Download Submit
C:\Users\Admin\AppData\Local\Temp\Dllhost.exe

Filesize
1.1MB

MD5
5ce0e5243691b94f82a7542be0e53243

SHA1
90ee1a7d39a907c0818aabc87a07de90d3a73958

SHA256
24a6454cbfebd84b0cfb7d0fc0ec2c7f55bd1c9c58a885149dac151d3c5f02f3

SHA512
ce899bd04209c28b9e7aa3b31b75ff1620bde39470f02f902de67d3a2a8c989d37e635e3e01a631f15ea2e7fbf243b3d1172d154f7acd836abd86a68f5a76dce

Download Submit
memory/1500-38-0x0000000000C50000-0x0000000000FC6000-memory.dmp

Filesize
3.5MB

Download
memory/1500-36-0x0000000000C50000-0x0000000000FC6000-memory.dmp

Filesize
3.5MB

Download
memory/1500-41-0x0000000000C50000-0x0000000000FC6000-memory.dmp

Filesize
3.5MB

Download
memory/3444-49-0x0000000000C50000-0x0000000000FC6000-memory.dmp

Filesize
3.5MB

Download
memory/3444-54-0x0000000000C50000-0x0000000000FC6000-memory.dmp

Filesize
3.5MB

Download
memory/3444-52-0x0000000000C50000-0x0000000000FC6000-memory.dmp

Filesize
3.5MB

Download
memory/3444-51-0x0000000000C50000-0x0000000000FC6000-memory.dmp

Filesize
3.5MB

Download
memory/3944-20-0x00000000006B0000-0x0000000000A26000-memory.dmp

Filesize
3.5MB

Download
memory/3944-16-0x00000000006B0000-0x0000000000A26000-memory.dmp

Filesize
3.5MB

Download
memory/3944-31-0x0000000005B50000-0x0000000005B68000-memory.dmp

Filesize
96KB

Download
memory/3944-21-0x0000000074570000-0x0000000074D20000-memory.dmp

Filesize
7.7MB

Download
memory/3944-22-0x0000000074570000-0x0000000074D20000-memory.dmp

Filesize
7.7MB

Download
memory/3944-28-0x0000000074570000-0x0000000074D20000-memory.dmp

Filesize
7.7MB

Download
memory/3944-25-0x00000000006B0000-0x0000000000A26000-memory.dmp

Filesize
3.5MB

Download
memory/3944-26-0x0000000074570000-0x0000000074D20000-memory.dmp

Filesize
7.7MB

Download
memory/3944-29-0x0000000002CB0000-0x0000000002CBA000-memory.dmp

Filesize
40KB

Download
memory/3944-30-0x00000000057B0000-0x0000000005816000-memory.dmp

Filesize
408KB

Download
memory/5240-1-0x000000007457E000-0x000000007457F000-memory.dmp

Filesize
4KB

Download
memory/5240-3-0x00000000056A0000-0x000000000573C000-memory.dmp

Filesize
624KB

Download
memory/5240-0-0x0000000000060000-0x00000000003D6000-memory.dmp

Filesize
3.5MB

Download
memory/5240-19-0x0000000074570000-0x0000000074D20000-memory.dmp

Filesize
7.7MB

Download
memory/5240-18-0x0000000000060000-0x00000000003D6000-memory.dmp

Filesize
3.5MB

Download
memory/5240-2-0x0000000000060000-0x00000000003D6000-memory.dmp

Filesize
3.5MB

Download
memory/5240-5-0x0000000005A70000-0x0000000005B02000-memory.dmp

Filesize
584KB

Download
memory/5240-6-0x0000000074570000-0x0000000074D20000-memory.dmp

Filesize
7.7MB

Download
memory/5240-4-0x0000000005F80000-0x0000000006524000-memory.dmp

Filesize
5.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads