njrat | f747150ab61965f0a0d5bfca6c190795733eb46671a3dd500073f51c2457075b

General

Target

f747150ab61965f0a0d5bfca6c190795733eb46671a3dd500073f51c2457075b.exe
Size

432KB
MD5

57a9c69d63266d547a59f374abe187ea
SHA1

c3f628d6fa93a1c89c1adb7e9ca9c913395de44a
SHA256

f747150ab61965f0a0d5bfca6c190795733eb46671a3dd500073f51c2457075b
SHA512

d971f3f0a1c9e003d3c32b937a84cf9f0f8b50df0946b4c342df5682f009a5bffab318e3edb66f5e0bb2fd0436f9d0fb88b0813206007c04c63b8ddc3c7fb943
SSDEEP

96:fsDYb94x6pIEYaXcwhx5zWLYxT9FS7Z0epAIb+zNtp:UEb94x8pYapz1WLOxU7Z0dcYv

Score

10^/10

njrat 2021 evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

2021

C2

aqq.linkpc.net:999

Mutex

a1776750d898d3976ceabc94432acfb1

Attributes

reg_key
a1776750d898d3976ceabc94432acfb1
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

pid	Process
2696	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
2052	System64.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\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a1776750d898d3976ceabc94432acfb1 = "\"C:\\Users\\Admin\\AppData\\Roaming\\System64.exe\" .."	System64.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\a1776750d898d3976ceabc94432acfb1 = "\"C:\\Users\\Admin\\AppData\\Roaming\\System64.exe\" .."	System64.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\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 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	2052	System64.exe
Token: 33	2052	System64.exe
Token: SeIncBasePriorityPrivilege	2052	System64.exe
Token: 33	2052	System64.exe
Token: SeIncBasePriorityPrivilege	2052	System64.exe
Token: 33	2052	System64.exe
Token: SeIncBasePriorityPrivilege	2052	System64.exe
Token: 33	2052	System64.exe
Token: SeIncBasePriorityPrivilege	2052	System64.exe
Token: 33	2052	System64.exe
Token: SeIncBasePriorityPrivilege	2052	System64.exe
Token: 33	2052	System64.exe
Token: SeIncBasePriorityPrivilege	2052	System64.exe
Token: 33	2052	System64.exe
Token: SeIncBasePriorityPrivilege	2052	System64.exe
Token: 33	2052	System64.exe
Token: SeIncBasePriorityPrivilege	2052	System64.exe
Token: 33	2052	System64.exe
Token: SeIncBasePriorityPrivilege	2052	System64.exe
Token: 33	2052	System64.exe
Token: SeIncBasePriorityPrivilege	2052	System64.exe
Token: 33	2052	System64.exe
Token: SeIncBasePriorityPrivilege	2052	System64.exe
Token: 33	2052	System64.exe
Token: SeIncBasePriorityPrivilege	2052	System64.exe
Token: 33	2052	System64.exe
Token: SeIncBasePriorityPrivilege	2052	System64.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2736 wrote to memory of 2052	2736	f747150ab61965f0a0d5bfca6c190795733eb46671a3dd500073f51c2457075b.exe	30
PID 2736 wrote to memory of 2052	2736	f747150ab61965f0a0d5bfca6c190795733eb46671a3dd500073f51c2457075b.exe	30
PID 2736 wrote to memory of 2052	2736	f747150ab61965f0a0d5bfca6c190795733eb46671a3dd500073f51c2457075b.exe	30
PID 2052 wrote to memory of 2696	2052	System64.exe	31
PID 2052 wrote to memory of 2696	2052	System64.exe	31
PID 2052 wrote to memory of 2696	2052	System64.exe	31

C:\Users\Admin\AppData\Local\Temp\f747150ab61965f0a0d5bfca6c190795733eb46671a3dd500073f51c2457075b.exe
"C:\Users\Admin\AppData\Local\Temp\f747150ab61965f0a0d5bfca6c190795733eb46671a3dd500073f51c2457075b.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2736
- C:\Users\Admin\AppData\Roaming\System64.exe
  "C:\Users\Admin\AppData\Roaming\System64.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2052
- - C:\Windows\system32\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\System64.exe" "System64.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    PID:2696

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\System64.exe

Filesize
432KB

MD5
57a9c69d63266d547a59f374abe187ea

SHA1
c3f628d6fa93a1c89c1adb7e9ca9c913395de44a

SHA256
f747150ab61965f0a0d5bfca6c190795733eb46671a3dd500073f51c2457075b

SHA512
d971f3f0a1c9e003d3c32b937a84cf9f0f8b50df0946b4c342df5682f009a5bffab318e3edb66f5e0bb2fd0436f9d0fb88b0813206007c04c63b8ddc3c7fb943

Download Submit
memory/2052-8-0x0000000000F60000-0x0000000000FD2000-memory.dmp

Filesize
456KB

Download
memory/2052-9-0x000007FEF5FF0000-0x000007FEF69DC000-memory.dmp

Filesize
9.9MB

Download
memory/2052-10-0x000007FEF5FF0000-0x000007FEF69DC000-memory.dmp

Filesize
9.9MB

Download
memory/2052-11-0x000007FEF5FF0000-0x000007FEF69DC000-memory.dmp

Filesize
9.9MB

Download
memory/2052-12-0x000007FEF5FF0000-0x000007FEF69DC000-memory.dmp

Filesize
9.9MB

Download
memory/2736-0-0x000007FEF5FF3000-0x000007FEF5FF4000-memory.dmp

Filesize
4KB

Download
memory/2736-1-0x00000000012B0000-0x0000000001322000-memory.dmp

Filesize
456KB

Download
memory/2736-2-0x00000000004D0000-0x00000000004DC000-memory.dmp

Filesize
48KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads