njrat | 66a1743f5791c9746a988bb1e5c250f25941a3122430be24380d9a9cb3484961

General

Target

66a1743f5791c9746a988bb1e5c250f25941a3122430be24380d9a9cb3484961.exe
Size

489KB
MD5

3dbe30b615ca39afbc28c4e00fb5941d
SHA1

199f664cf6d92a172c2e2d8cbfcd71f2884f2906
SHA256

66a1743f5791c9746a988bb1e5c250f25941a3122430be24380d9a9cb3484961
SHA512

2fd60508dfbe0942363bdd1183df0e2c43d628af036462d9ab648bce15209ef39061e64b162174b500fb5c79a3dcb07a6098bb365c9eea76dcd4fb0ab62110e8
SSDEEP

12288:tar1ua/gY5dCTiJ5njy4NR/9M4OZp75vl07sOxc:ohn5QyNykI4AVly7

Score

10^/10

njrat vip@dump evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

VIP@DUMP

C2

volkatv500.sytes.net:999

Mutex

e0bb29bc288c4cac846ed6aff410e0c6

Attributes

reg_key
e0bb29bc288c4cac846ed6aff410e0c6
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

Processes:

netsh.exe

pid	Process
2016	netsh.exe

Drops startup file 2 IoCs

Processes:

winhelp.bat

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e0bb29bc288c4cac846ed6aff410e0c6.exe	winhelp.bat
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e0bb29bc288c4cac846ed6aff410e0c6.exe	winhelp.bat

Executes dropped EXE 1 IoCs

Processes:

winhelp.bat

pid	Process
2160	winhelp.bat

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

winhelp.bat

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\e0bb29bc288c4cac846ed6aff410e0c6 = "\"C:\\Users\\Admin\\AppData\\Roaming\\winhelp.bat\" .."	winhelp.bat
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\e0bb29bc288c4cac846ed6aff410e0c6 = "\"C:\\Users\\Admin\\AppData\\Roaming\\winhelp.bat\" .."	winhelp.bat

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

Processes:

netsh.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe

Suspicious use of AdjustPrivilegeToken 29 IoCs

Processes:

winhelp.bat

description	pid	Process
Token: SeDebugPrivilege	2160	winhelp.bat
Token: 33	2160	winhelp.bat
Token: SeIncBasePriorityPrivilege	2160	winhelp.bat
Token: 33	2160	winhelp.bat
Token: SeIncBasePriorityPrivilege	2160	winhelp.bat
Token: 33	2160	winhelp.bat
Token: SeIncBasePriorityPrivilege	2160	winhelp.bat
Token: 33	2160	winhelp.bat
Token: SeIncBasePriorityPrivilege	2160	winhelp.bat
Token: 33	2160	winhelp.bat
Token: SeIncBasePriorityPrivilege	2160	winhelp.bat
Token: 33	2160	winhelp.bat
Token: SeIncBasePriorityPrivilege	2160	winhelp.bat
Token: 33	2160	winhelp.bat
Token: SeIncBasePriorityPrivilege	2160	winhelp.bat
Token: 33	2160	winhelp.bat
Token: SeIncBasePriorityPrivilege	2160	winhelp.bat
Token: 33	2160	winhelp.bat
Token: SeIncBasePriorityPrivilege	2160	winhelp.bat
Token: 33	2160	winhelp.bat
Token: SeIncBasePriorityPrivilege	2160	winhelp.bat
Token: 33	2160	winhelp.bat
Token: SeIncBasePriorityPrivilege	2160	winhelp.bat
Token: 33	2160	winhelp.bat
Token: SeIncBasePriorityPrivilege	2160	winhelp.bat
Token: 33	2160	winhelp.bat
Token: SeIncBasePriorityPrivilege	2160	winhelp.bat
Token: 33	2160	winhelp.bat
Token: SeIncBasePriorityPrivilege	2160	winhelp.bat

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

66a1743f5791c9746a988bb1e5c250f25941a3122430be24380d9a9cb3484961.exewinhelp.bat

description	pid	Process	procid_target
PID 2116 wrote to memory of 2160	2116	66a1743f5791c9746a988bb1e5c250f25941a3122430be24380d9a9cb3484961.exe	30
PID 2116 wrote to memory of 2160	2116	66a1743f5791c9746a988bb1e5c250f25941a3122430be24380d9a9cb3484961.exe	30
PID 2116 wrote to memory of 2160	2116	66a1743f5791c9746a988bb1e5c250f25941a3122430be24380d9a9cb3484961.exe	30
PID 2160 wrote to memory of 2016	2160	winhelp.bat	31
PID 2160 wrote to memory of 2016	2160	winhelp.bat	31
PID 2160 wrote to memory of 2016	2160	winhelp.bat	31

C:\Users\Admin\AppData\Local\Temp\66a1743f5791c9746a988bb1e5c250f25941a3122430be24380d9a9cb3484961.exe
"C:\Users\Admin\AppData\Local\Temp\66a1743f5791c9746a988bb1e5c250f25941a3122430be24380d9a9cb3484961.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2116
- C:\Users\Admin\AppData\Roaming\winhelp.bat
  "C:\Users\Admin\AppData\Roaming\winhelp.bat"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2160
- - C:\Windows\system32\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\winhelp.bat" "winhelp.bat" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    PID:2016

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\winhelp.bat

Filesize
489KB

MD5
3dbe30b615ca39afbc28c4e00fb5941d

SHA1
199f664cf6d92a172c2e2d8cbfcd71f2884f2906

SHA256
66a1743f5791c9746a988bb1e5c250f25941a3122430be24380d9a9cb3484961

SHA512
2fd60508dfbe0942363bdd1183df0e2c43d628af036462d9ab648bce15209ef39061e64b162174b500fb5c79a3dcb07a6098bb365c9eea76dcd4fb0ab62110e8

Download Submit
memory/2116-12-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download
memory/2116-2-0x0000000001ED0000-0x0000000001F58000-memory.dmp

Filesize
544KB

Download
memory/2116-1-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download
memory/2116-4-0x0000000001FA0000-0x0000000001FA6000-memory.dmp

Filesize
24KB

Download
memory/2116-19-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download
memory/2116-6-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download
memory/2116-7-0x000007FEF53CE000-0x000007FEF53CF000-memory.dmp

Filesize
4KB

Download
memory/2116-8-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download
memory/2116-9-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download
memory/2116-10-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download
memory/2116-11-0x0000000000870000-0x000000000087C000-memory.dmp

Filesize
48KB

Download
memory/2116-0-0x000007FEF53CE000-0x000007FEF53CF000-memory.dmp

Filesize
4KB

Download
memory/2116-3-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download
memory/2116-5-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download
memory/2160-20-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download
memory/2160-21-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download
memory/2160-18-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download
memory/2160-22-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download
memory/2160-23-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download
memory/2160-24-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download
memory/2160-25-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download
memory/2160-26-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download
memory/2160-28-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download
memory/2160-29-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download
memory/2160-30-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

Filesize
9.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads