njrat | f92b8e334fa7d646f9f34336d340075c8b607727be46290d5b5d04346de3c257

Analysis

max time kernel
147s
max time network
152s
platform
windows11-21h2_x64
resource
win11-20241023-en
resource tags

arch:x64arch:x86image:win11-20241023-enlocale:en-usos:windows11-21h2-x64system
submitted
07/01/2025, 19:11

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General

Target

Server.exe
Size

790KB
MD5

f8d0d5a67123a19bbda3691836a8aabc
SHA1

0170e410957f3208932abb3c42780b383f47f93f
SHA256

f92b8e334fa7d646f9f34336d340075c8b607727be46290d5b5d04346de3c257
SHA512

5b4aa252812e57390a23ea11117ad3a624969c6c0310c18e92cc099f752c2af184bd85bee29a8699366e0f6dae0825646e9392ee0cfe555fd0fcbb47f3fe12d9
SSDEEP

12288:mMSApJVYG5lDLyjsb0eOzkv4R7QnvUUilQ35+6G75V9nSN/j:mnsJ39LyjbJkQFMhmC+6GD9e

Score

10^/10

njrat xred backdoor discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

xred

xred.mooo.com

Attributes

email
[email protected]
payload_url
http://freedns.afraid.org/api/?action=getdyndns&sha=a30fa98efc092684e8d1c5cff797bcc613562978

https://docs.google.com/uc?id=0BxsMXGfPIZfSVlVsOGlEVGxuZVk&export=download

https://www.dropbox.com/s/n1w4p8gc6jzo0sg/SUpdate.ini?dl=1

http://xred.site50.net/syn/SUpdate.ini

https://docs.google.com/uc?id=0BxsMXGfPIZfSVzUyaHFYVkQxeFk&export=download

https://www.dropbox.com/s/zhp1b06imehwylq/Synaptics.rar?dl=1

http://xred.site50.net/syn/Synaptics.rar

https://docs.google.com/uc?id=0BxsMXGfPIZfSTmlVYkxhSDg5TzQ&export=download

https://www.dropbox.com/s/fzj752whr3ontsm/SSLLibrary.dll?dl=1

http://xred.site50.net/syn/SSLLibrary.dll

Signatures

Njrat family
njrat
Xred
Xred is backdoor written in Delphi.
backdoor xred
Xred family
xred
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
2868	netsh.exe

Executes dropped EXE 3 IoCs

pid	Process
3744	._cache_Server.exe
3000	Synaptics.exe
3980	._cache_Synaptics.exe

Adds Run key to start application 2 TTPs 1 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\Synaptics Pointing Device Driver = "C:\\ProgramData\\Synaptics\\Synaptics.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\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 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	._cache_Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Synaptics.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Server.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Synaptics.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4616	EXCEL.EXE

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	3744	._cache_Server.exe
Token: 33	3744	._cache_Server.exe
Token: SeIncBasePriorityPrivilege	3744	._cache_Server.exe
Token: 33	3744	._cache_Server.exe
Token: SeIncBasePriorityPrivilege	3744	._cache_Server.exe
Token: 33	3744	._cache_Server.exe
Token: SeIncBasePriorityPrivilege	3744	._cache_Server.exe
Token: 33	3744	._cache_Server.exe
Token: SeIncBasePriorityPrivilege	3744	._cache_Server.exe
Token: 33	3744	._cache_Server.exe
Token: SeIncBasePriorityPrivilege	3744	._cache_Server.exe
Token: 33	3744	._cache_Server.exe
Token: SeIncBasePriorityPrivilege	3744	._cache_Server.exe
Token: 33	3744	._cache_Server.exe
Token: SeIncBasePriorityPrivilege	3744	._cache_Server.exe
Token: 33	3744	._cache_Server.exe
Token: SeIncBasePriorityPrivilege	3744	._cache_Server.exe
Token: 33	3744	._cache_Server.exe
Token: SeIncBasePriorityPrivilege	3744	._cache_Server.exe
Token: 33	3744	._cache_Server.exe
Token: SeIncBasePriorityPrivilege	3744	._cache_Server.exe
Token: 33	3744	._cache_Server.exe
Token: SeIncBasePriorityPrivilege	3744	._cache_Server.exe
Token: 33	3744	._cache_Server.exe
Token: SeIncBasePriorityPrivilege	3744	._cache_Server.exe
Token: 33	3744	._cache_Server.exe
Token: SeIncBasePriorityPrivilege	3744	._cache_Server.exe
Token: 33	3744	._cache_Server.exe
Token: SeIncBasePriorityPrivilege	3744	._cache_Server.exe
Token: 33	3744	._cache_Server.exe
Token: SeIncBasePriorityPrivilege	3744	._cache_Server.exe
Token: 33	3744	._cache_Server.exe
Token: SeIncBasePriorityPrivilege	3744	._cache_Server.exe
Token: 33	3744	._cache_Server.exe
Token: SeIncBasePriorityPrivilege	3744	._cache_Server.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4616	EXCEL.EXE
4616	EXCEL.EXE
4616	EXCEL.EXE
4616	EXCEL.EXE
4616	EXCEL.EXE
4616	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4952 wrote to memory of 3744	4952	Server.exe	77
PID 4952 wrote to memory of 3744	4952	Server.exe	77
PID 4952 wrote to memory of 3744	4952	Server.exe	77
PID 4952 wrote to memory of 3000	4952	Server.exe	78
PID 4952 wrote to memory of 3000	4952	Server.exe	78
PID 4952 wrote to memory of 3000	4952	Server.exe	78
PID 3000 wrote to memory of 3980	3000	Synaptics.exe	79
PID 3000 wrote to memory of 3980	3000	Synaptics.exe	79
PID 3000 wrote to memory of 3980	3000	Synaptics.exe	79
PID 3744 wrote to memory of 2868	3744	._cache_Server.exe	82
PID 3744 wrote to memory of 2868	3744	._cache_Server.exe	82
PID 3744 wrote to memory of 2868	3744	._cache_Server.exe	82

C:\Users\Admin\AppData\Local\Temp\Server.exe
"C:\Users\Admin\AppData\Local\Temp\Server.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4952
- C:\Users\Admin\AppData\Local\Temp\._cache_Server.exe
  "C:\Users\Admin\AppData\Local\Temp\._cache_Server.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3744
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\._cache_Server.exe" "._cache_Server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2868
- C:\ProgramData\Synaptics\Synaptics.exe
  "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3000
- - C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
    "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe" InjUpdate
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3980

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" /automation -Embedding
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:4616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Synaptics\Synaptics.exe

Filesize
790KB

MD5
f8d0d5a67123a19bbda3691836a8aabc

SHA1
0170e410957f3208932abb3c42780b383f47f93f

SHA256
f92b8e334fa7d646f9f34336d340075c8b607727be46290d5b5d04346de3c257

SHA512
5b4aa252812e57390a23ea11117ad3a624969c6c0310c18e92cc099f752c2af184bd85bee29a8699366e0f6dae0825646e9392ee0cfe555fd0fcbb47f3fe12d9

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

Filesize
37KB

MD5
28c6f96db52b32c32f25ef6c0ac2717d

SHA1
4eaf024711d5dbaf641ae52eacb6e745f9f12bb2

SHA256
2cd48d626ada71c84e1db58049bf428794e8854011e0d2bf6d6b62f8bde4ac9e

SHA512
b506ef288d3e733c1b0b3cf631a4727c23923609aa07d910322dd65518aeca68e976f279726b0b31a774da2283ba3d561894a0c055abed274bd7d9f0767afc16

Download Submit
C:\Users\Admin\AppData\Local\Temp\BEC75E00

Filesize
23KB

MD5
bb830b30ff64bf5ddfa7da997a5d60ff

SHA1
94145d07148f11e8e84a214d1f46eb93d0b66c13

SHA256
f922786db4463a791b3b1253326334034f84880f470ee5d5af10bd0e953d9f01

SHA512
5556380d42aa5e7a05795c7e28f126d80261ad0d7bee2f8fd2d222eac50a61810fd2fcb4530d55e8010613893e5a35f45787ae0118486ebde59ab8e09fbee817

Download Submit
C:\Users\Admin\AppData\Local\Temp\nBqynwSE.xlsm

Filesize
17KB

MD5
e566fc53051035e1e6fd0ed1823de0f9

SHA1
00bc96c48b98676ecd67e81a6f1d7754e4156044

SHA256
8e574b4ae6502230c0829e2319a6c146aebd51b7008bf5bbfb731424d7952c15

SHA512
a12f56ff30ea35381c2b8f8af2446cf1daa21ee872e98cad4b863db060acd4c33c5760918c277dadb7a490cb4ca2f925d59c70dc5171e16601a11bc4a6542b04

Download Submit
memory/3000-221-0x0000000000400000-0x00000000004CC000-memory.dmp

Filesize
816KB

Download
memory/3000-190-0x0000000002230000-0x0000000002231000-memory.dmp

Filesize
4KB

Download
memory/3000-189-0x0000000000400000-0x00000000004CC000-memory.dmp

Filesize
816KB

Download
memory/3000-106-0x0000000002230000-0x0000000002231000-memory.dmp

Filesize
4KB

Download
memory/3744-107-0x0000000072B52000-0x0000000072B54000-memory.dmp

Filesize
8KB

Download
memory/3744-105-0x0000000072B50000-0x0000000073101000-memory.dmp

Filesize
5.7MB

Download
memory/3744-188-0x0000000072B50000-0x0000000073101000-memory.dmp

Filesize
5.7MB

Download
memory/3744-91-0x0000000072B51000-0x0000000072B52000-memory.dmp

Filesize
4KB

Download
memory/4616-141-0x00007FFF05630000-0x00007FFF05640000-memory.dmp

Filesize
64KB

Download
memory/4616-140-0x00007FFF05630000-0x00007FFF05640000-memory.dmp

Filesize
64KB

Download
memory/4616-143-0x00007FFF05630000-0x00007FFF05640000-memory.dmp

Filesize
64KB

Download
memory/4616-142-0x00007FFF05630000-0x00007FFF05640000-memory.dmp

Filesize
64KB

Download
memory/4616-144-0x00007FFF02FF0000-0x00007FFF03000000-memory.dmp

Filesize
64KB

Download
memory/4616-145-0x00007FFF02FF0000-0x00007FFF03000000-memory.dmp

Filesize
64KB

Download
memory/4616-139-0x00007FFF05630000-0x00007FFF05640000-memory.dmp

Filesize
64KB

Download
memory/4952-0-0x0000000002360000-0x0000000002361000-memory.dmp

Filesize
4KB

Download
memory/4952-102-0x0000000000400000-0x00000000004CC000-memory.dmp

Filesize
816KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads