njrat | 356efbd5427f7b4079a0efaec5b72ce36fea23fdaa22331ae35c7e15323df2ae

General

Target

356efbd5427f7b4079a0efaec5b72ce36fea23fdaa22331ae35c7e15323df2ae.exe
Size

23KB
MD5

a590cf933af43e45adc2bc0490366cb5
SHA1

3d11acef56ca27cfe356ac55444a6197ea064cfa
SHA256

356efbd5427f7b4079a0efaec5b72ce36fea23fdaa22331ae35c7e15323df2ae
SHA512

453774c11a029731bfd749406d076c7987c4a57603e890fd12c8585e59b33ea7b79ab79c330a4a33d4b17ce693a3f74e31a464055268d9ba0b0a76e7bc3efa82
SSDEEP

384:WzmicUDPiJUQrlRGSHCYlbY6ZgvSMBTtxmRvR6JZlbw8hqIusZzZ68:CpD2btHxRpcnuQ

Score

10^/10

njrat discovery evasion persistence privilege_escalation trojan

Malware Config

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
1528	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:

356efbd5427f7b4079a0efaec5b72ce36fea23fdaa22331ae35c7e15323df2ae.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	356efbd5427f7b4079a0efaec5b72ce36fea23fdaa22331ae35c7e15323df2ae.exe

Drops startup file 2 IoCs

Processes:

chrome.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\29cb34d147658b14ff9d42936a5ab9ee.exe	chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\29cb34d147658b14ff9d42936a5ab9ee.exe	chrome.exe

Executes dropped EXE 1 IoCs

Processes:

chrome.exe

pid	Process
4944	chrome.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

chrome.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\29cb34d147658b14ff9d42936a5ab9ee = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\chrome.exe\" .."	chrome.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\29cb34d147658b14ff9d42936a5ab9ee = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\chrome.exe\" .."	chrome.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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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

Processes:

356efbd5427f7b4079a0efaec5b72ce36fea23fdaa22331ae35c7e15323df2ae.exechrome.exenetsh.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	356efbd5427f7b4079a0efaec5b72ce36fea23fdaa22331ae35c7e15323df2ae.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chrome.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

Processes:

chrome.exe

description	pid	Process
Token: SeDebugPrivilege	4944	chrome.exe
Token: 33	4944	chrome.exe
Token: SeIncBasePriorityPrivilege	4944	chrome.exe
Token: 33	4944	chrome.exe
Token: SeIncBasePriorityPrivilege	4944	chrome.exe
Token: 33	4944	chrome.exe
Token: SeIncBasePriorityPrivilege	4944	chrome.exe
Token: 33	4944	chrome.exe
Token: SeIncBasePriorityPrivilege	4944	chrome.exe
Token: 33	4944	chrome.exe
Token: SeIncBasePriorityPrivilege	4944	chrome.exe
Token: 33	4944	chrome.exe
Token: SeIncBasePriorityPrivilege	4944	chrome.exe
Token: 33	4944	chrome.exe
Token: SeIncBasePriorityPrivilege	4944	chrome.exe
Token: 33	4944	chrome.exe
Token: SeIncBasePriorityPrivilege	4944	chrome.exe
Token: 33	4944	chrome.exe
Token: SeIncBasePriorityPrivilege	4944	chrome.exe
Token: 33	4944	chrome.exe
Token: SeIncBasePriorityPrivilege	4944	chrome.exe
Token: 33	4944	chrome.exe
Token: SeIncBasePriorityPrivilege	4944	chrome.exe
Token: 33	4944	chrome.exe
Token: SeIncBasePriorityPrivilege	4944	chrome.exe
Token: 33	4944	chrome.exe
Token: SeIncBasePriorityPrivilege	4944	chrome.exe
Token: 33	4944	chrome.exe
Token: SeIncBasePriorityPrivilege	4944	chrome.exe
Token: 33	4944	chrome.exe
Token: SeIncBasePriorityPrivilege	4944	chrome.exe
Token: 33	4944	chrome.exe
Token: SeIncBasePriorityPrivilege	4944	chrome.exe
Token: 33	4944	chrome.exe
Token: SeIncBasePriorityPrivilege	4944	chrome.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

356efbd5427f7b4079a0efaec5b72ce36fea23fdaa22331ae35c7e15323df2ae.exechrome.exe

description	pid	Process	procid_target
PID 4604 wrote to memory of 4944	4604	356efbd5427f7b4079a0efaec5b72ce36fea23fdaa22331ae35c7e15323df2ae.exe	92
PID 4604 wrote to memory of 4944	4604	356efbd5427f7b4079a0efaec5b72ce36fea23fdaa22331ae35c7e15323df2ae.exe	92
PID 4604 wrote to memory of 4944	4604	356efbd5427f7b4079a0efaec5b72ce36fea23fdaa22331ae35c7e15323df2ae.exe	92
PID 4944 wrote to memory of 1528	4944	chrome.exe	96
PID 4944 wrote to memory of 1528	4944	chrome.exe	96
PID 4944 wrote to memory of 1528	4944	chrome.exe	96

C:\Users\Admin\AppData\Local\Temp\356efbd5427f7b4079a0efaec5b72ce36fea23fdaa22331ae35c7e15323df2ae.exe
"C:\Users\Admin\AppData\Local\Temp\356efbd5427f7b4079a0efaec5b72ce36fea23fdaa22331ae35c7e15323df2ae.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4604
- C:\Users\Admin\AppData\Local\Temp\chrome.exe
  "C:\Users\Admin\AppData\Local\Temp\chrome.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4944
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\chrome.exe" "chrome.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:1528

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\chrome.exe

Filesize
23KB

MD5
a590cf933af43e45adc2bc0490366cb5

SHA1
3d11acef56ca27cfe356ac55444a6197ea064cfa

SHA256
356efbd5427f7b4079a0efaec5b72ce36fea23fdaa22331ae35c7e15323df2ae

SHA512
453774c11a029731bfd749406d076c7987c4a57603e890fd12c8585e59b33ea7b79ab79c330a4a33d4b17ce693a3f74e31a464055268d9ba0b0a76e7bc3efa82

Download Submit
memory/4604-0-0x0000000074812000-0x0000000074813000-memory.dmp

Filesize
4KB

Download
memory/4604-1-0x0000000074810000-0x0000000074DC1000-memory.dmp

Filesize
5.7MB

Download
memory/4604-2-0x0000000074810000-0x0000000074DC1000-memory.dmp

Filesize
5.7MB

Download
memory/4604-13-0x0000000074810000-0x0000000074DC1000-memory.dmp

Filesize
5.7MB

Download
memory/4944-12-0x0000000074810000-0x0000000074DC1000-memory.dmp

Filesize
5.7MB

Download
memory/4944-14-0x0000000074810000-0x0000000074DC1000-memory.dmp

Filesize
5.7MB

Download
memory/4944-15-0x0000000074810000-0x0000000074DC1000-memory.dmp

Filesize
5.7MB

Download
memory/4944-17-0x0000000074810000-0x0000000074DC1000-memory.dmp

Filesize
5.7MB

Download
memory/4944-18-0x0000000074810000-0x0000000074DC1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads