njrat | 99f1de16413844a0134292c235e03d19abbeebcec7a61848f73b46fbe19b8d43

Analysis

max time kernel
178s
max time network
187s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
13/10/2023, 03:13

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General

Target

Client.exe
Size

157KB
MD5

3d8e8076e9669284ecf79adf28a3c589
SHA1

7728302139e6e14e62e91988b694bb7f07c50839
SHA256

99f1de16413844a0134292c235e03d19abbeebcec7a61848f73b46fbe19b8d43
SHA512

d83ff3873753221fad73131262fbf9f7ec3d331ce26f75a2cf65ccd2aede75f761fd4f2d17d1f9300805564fa28ec92d11343ed65045ed1772f5280f6aebbca7
SSDEEP

3072:KXeUZVaLio9hPFkpMVn/sMM1hn1DYAPR6h2g:JLt9cMV/sMMpDYa6Eg

Score

10^/10

njrat evasion persistence trojan

Malware Config

Signatures

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

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Windows Service

T1543.003

pid	Process
1424	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9cb8a477ea820d2170e87a43e56f71f4.exe	Client.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9cb8a477ea820d2170e87a43e56f71f4.exe	Client.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-1-5-21-919254492-3979293997-764407192-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\9cb8a477ea820d2170e87a43e56f71f4 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Client.exe\" .."	Client.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\9cb8a477ea820d2170e87a43e56f71f4 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Client.exe\" .."	Client.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of AdjustPrivilegeToken 31 IoCs

description	pid	Process
Token: SeDebugPrivilege	3436	Client.exe
Token: 33	3436	Client.exe
Token: SeIncBasePriorityPrivilege	3436	Client.exe
Token: 33	3436	Client.exe
Token: SeIncBasePriorityPrivilege	3436	Client.exe
Token: 33	3436	Client.exe
Token: SeIncBasePriorityPrivilege	3436	Client.exe
Token: 33	3436	Client.exe
Token: SeIncBasePriorityPrivilege	3436	Client.exe
Token: 33	3436	Client.exe
Token: SeIncBasePriorityPrivilege	3436	Client.exe
Token: 33	3436	Client.exe
Token: SeIncBasePriorityPrivilege	3436	Client.exe
Token: 33	3436	Client.exe
Token: SeIncBasePriorityPrivilege	3436	Client.exe
Token: 33	3436	Client.exe
Token: SeIncBasePriorityPrivilege	3436	Client.exe
Token: 33	3436	Client.exe
Token: SeIncBasePriorityPrivilege	3436	Client.exe
Token: 33	3436	Client.exe
Token: SeIncBasePriorityPrivilege	3436	Client.exe
Token: 33	3436	Client.exe
Token: SeIncBasePriorityPrivilege	3436	Client.exe
Token: 33	3436	Client.exe
Token: SeIncBasePriorityPrivilege	3436	Client.exe
Token: 33	3436	Client.exe
Token: SeIncBasePriorityPrivilege	3436	Client.exe
Token: 33	3436	Client.exe
Token: SeIncBasePriorityPrivilege	3436	Client.exe
Token: 33	3436	Client.exe
Token: SeIncBasePriorityPrivilege	3436	Client.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3436 wrote to memory of 1424	3436	Client.exe	90
PID 3436 wrote to memory of 1424	3436	Client.exe	90
PID 3436 wrote to memory of 1424	3436	Client.exe	90

C:\Users\Admin\AppData\Local\Temp\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3436
- C:\Windows\SysWOW64\netsh.exe
  netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Client.exe" "Client.exe" ENABLE
  2⤵
  - Modifies Windows Firewall
  PID:1424

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

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

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

memory/3436-0-0x00000000745E0000-0x0000000074B91000-memory.dmp

Filesize
5.7MB

Download
memory/3436-1-0x00000000745E0000-0x0000000074B91000-memory.dmp

Filesize
5.7MB

Download
memory/3436-2-0x0000000000C00000-0x0000000000C10000-memory.dmp

Filesize
64KB

Download
memory/3436-3-0x00000000745E0000-0x0000000074B91000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads