njrat | 6f201afc797370ac6e33fafec41a794a2eb44c1bfd7d9079e3633ebe7bbb41e1

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-10-2024 14:56

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General

Target

hostr.exe
Size

105KB
MD5

5a559b6d223c79f3736dc52794636cfd
SHA1

5c4676b37fcd49990d21960a2df57af72ceef29a
SHA256

6f201afc797370ac6e33fafec41a794a2eb44c1bfd7d9079e3633ebe7bbb41e1
SHA512

7a12510fe2104a1860bccdd12d96449eb8b02e30f9757bf3fbb4aef3373c710afbaef380ad7f4b1f9fa8129d8bdc096b8f16cb6b1aada0495dba80db33fb9ce2
SSDEEP

1536:aDYEasJqkUssXOcfaAJzYU4r/1CbSYlIePDVFkhgIJZH:aasJjUfFOderYRH

Score

10^/10

njrat discovery evasion persistence privilege_escalation trojan

Malware Config

Signatures

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
2708	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ec83b2d446200dcd0392570446c898a3.exe	hostr.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ec83b2d446200dcd0392570446c898a3.exe	hostr.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\ec83b2d446200dcd0392570446c898a3 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\hostr.exe\" .."	hostr.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ec83b2d446200dcd0392570446c898a3 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\hostr.exe\" .."	hostr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2532 set thread context of 2468	2532	hostr.exe	30

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 3 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	hostr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hostr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe
2468	hostr.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2532	hostr.exe
Token: SeDebugPrivilege	2468	hostr.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 2468	2532	hostr.exe	30
PID 2532 wrote to memory of 2468	2532	hostr.exe	30
PID 2532 wrote to memory of 2468	2532	hostr.exe	30
PID 2532 wrote to memory of 2468	2532	hostr.exe	30
PID 2532 wrote to memory of 2468	2532	hostr.exe	30
PID 2532 wrote to memory of 2468	2532	hostr.exe	30
PID 2532 wrote to memory of 2468	2532	hostr.exe	30
PID 2532 wrote to memory of 2468	2532	hostr.exe	30
PID 2532 wrote to memory of 2468	2532	hostr.exe	30
PID 2468 wrote to memory of 2708	2468	hostr.exe	31
PID 2468 wrote to memory of 2708	2468	hostr.exe	31
PID 2468 wrote to memory of 2708	2468	hostr.exe	31
PID 2468 wrote to memory of 2708	2468	hostr.exe	31

C:\Users\Admin\AppData\Local\Temp\hostr.exe
"C:\Users\Admin\AppData\Local\Temp\hostr.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Users\Admin\AppData\Local\Temp\hostr.exe
  C:\Users\Admin\AppData\Local\Temp\hostr.exe
  2⤵
  - Drops startup file
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2468
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\hostr.exe" "hostr.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2708

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hostr.exe.tmp

Filesize
7B

MD5
5075140835d0bc504791c76b04c33d2b

SHA1
c2e2d6621334dc890bbd8a69430012c45a83bf65

SHA256
19ed40bf62c399b8492efda5b9a9184b68cf4d9d4a165b38557b9d14201d0c03

SHA512
5e25d90ad403ef6a41195dea27e7019046a2dfeca02625a92bff115b0f76baac4c38333586c41a2277e549fa86e7bf148e02d0a4486573a501f969ed57a74afb

Download Submit
memory/2468-3-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2468-7-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2468-5-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2468-8-0x00000000741E0000-0x000000007478B000-memory.dmp

Filesize
5.7MB

Download
memory/2468-11-0x00000000741E0000-0x000000007478B000-memory.dmp

Filesize
5.7MB

Download
memory/2532-0-0x00000000741E1000-0x00000000741E2000-memory.dmp

Filesize
4KB

Download
memory/2532-1-0x00000000741E0000-0x000000007478B000-memory.dmp

Filesize
5.7MB

Download
memory/2532-2-0x00000000741E0000-0x000000007478B000-memory.dmp

Filesize
5.7MB

Download
memory/2532-9-0x00000000741E0000-0x000000007478B000-memory.dmp

Filesize
5.7MB

Download