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

Processes:

netsh.exe

pid process

2252 netsh.exe

pid	process
2252	netsh.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

f747150ab61965f0a0d5bfca6c190795733eb46671a3dd500073f51c2457075b.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	f747150ab61965f0a0d5bfca6c190795733eb46671a3dd500073f51c2457075b.exe

Executes dropped EXE 1 IoCs

Processes:

System64.exe

pid process

2340 System64.exe

pid	process
2340	System64.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

System64.exe

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-1-5-21-2437139445-1151884604-3026847218-1000\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

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 35 IoCs

Processes:

System64.exe

description	pid	process
Token: SeDebugPrivilege	2340	System64.exe
Token: 33	2340	System64.exe
Token: SeIncBasePriorityPrivilege	2340	System64.exe
Token: 33	2340	System64.exe
Token: SeIncBasePriorityPrivilege	2340	System64.exe
Token: 33	2340	System64.exe
Token: SeIncBasePriorityPrivilege	2340	System64.exe
Token: 33	2340	System64.exe
Token: SeIncBasePriorityPrivilege	2340	System64.exe
Token: 33	2340	System64.exe
Token: SeIncBasePriorityPrivilege	2340	System64.exe
Token: 33	2340	System64.exe
Token: SeIncBasePriorityPrivilege	2340	System64.exe
Token: 33	2340	System64.exe
Token: SeIncBasePriorityPrivilege	2340	System64.exe
Token: 33	2340	System64.exe
Token: SeIncBasePriorityPrivilege	2340	System64.exe
Token: 33	2340	System64.exe
Token: SeIncBasePriorityPrivilege	2340	System64.exe
Token: 33	2340	System64.exe
Token: SeIncBasePriorityPrivilege	2340	System64.exe
Token: 33	2340	System64.exe
Token: SeIncBasePriorityPrivilege	2340	System64.exe
Token: 33	2340	System64.exe
Token: SeIncBasePriorityPrivilege	2340	System64.exe
Token: 33	2340	System64.exe
Token: SeIncBasePriorityPrivilege	2340	System64.exe
Token: 33	2340	System64.exe
Token: SeIncBasePriorityPrivilege	2340	System64.exe
Token: 33	2340	System64.exe
Token: SeIncBasePriorityPrivilege	2340	System64.exe
Token: 33	2340	System64.exe
Token: SeIncBasePriorityPrivilege	2340	System64.exe
Token: 33	2340	System64.exe
Token: SeIncBasePriorityPrivilege	2340	System64.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

f747150ab61965f0a0d5bfca6c190795733eb46671a3dd500073f51c2457075b.exeSystem64.exe

description	pid	process	target process
PID 5004 wrote to memory of 2340	5004	f747150ab61965f0a0d5bfca6c190795733eb46671a3dd500073f51c2457075b.exe	System64.exe
PID 5004 wrote to memory of 2340	5004	f747150ab61965f0a0d5bfca6c190795733eb46671a3dd500073f51c2457075b.exe	System64.exe
PID 2340 wrote to memory of 2252	2340	System64.exe	netsh.exe
PID 2340 wrote to memory of 2252	2340	System64.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\f747150ab61965f0a0d5bfca6c190795733eb46671a3dd500073f51c2457075b.exe
"C:\Users\Admin\AppData\Local\Temp\f747150ab61965f0a0d5bfca6c190795733eb46671a3dd500073f51c2457075b.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5004
- 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:2340
- - 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:2252

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

Query Registry

1

T1012

System Information Discovery

2

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/2340-15-0x00007FFCBD1D0000-0x00007FFCBDC91000-memory.dmp

Filesize
10.8MB

Download
memory/2340-16-0x00007FFCBD1D0000-0x00007FFCBDC91000-memory.dmp

Filesize
10.8MB

Download
memory/2340-17-0x00007FFCBD1D0000-0x00007FFCBDC91000-memory.dmp

Filesize
10.8MB

Download
memory/2340-18-0x00007FFCBD1D0000-0x00007FFCBDC91000-memory.dmp

Filesize
10.8MB

Download
memory/5004-0-0x00007FFCBD1D3000-0x00007FFCBD1D5000-memory.dmp

Filesize
8KB

Download
memory/5004-1-0x00000000003D0000-0x0000000000442000-memory.dmp

Filesize
456KB

Download
memory/5004-2-0x0000000000CF0000-0x0000000000CFC000-memory.dmp

Filesize
48KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads