njrat | 4b421db93299565c4a136f1219339f3c7c3e19a8bd215c911a98066715ac3fd3

General

Target

4b421db93299565c4a136f1219339f3c7c3e19a8bd215c911a98066715ac3fd3N.exe
Size

23KB
MD5

d3c4e56ec73b0276ca00a93aa39464f0
SHA1

06b8581db422422554a2c5a0356ebb3fa7860c65
SHA256

4b421db93299565c4a136f1219339f3c7c3e19a8bd215c911a98066715ac3fd3
SHA512

39c9c05754c7588f4dbf8261bd1aec98bf7c7c46a80e22be842d458cbc3a5eacd25efc5e2ecdebc9835347cdfe64016b7174c9b03e38c81d45bd919c1f0973b3
SSDEEP

384:XcqbCK0l4h7o9SVyDGvENuh46/gJkOmMSW38mRvR6JZlbw8hqIusZzZmhz:s30py6vhxaRpcnulJ

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
4816	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	4b421db93299565c4a136f1219339f3c7c3e19a8bd215c911a98066715ac3fd3N.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bb9e9fd0a962e09ebc4f64fb10159bf7.exe	update.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bb9e9fd0a962e09ebc4f64fb10159bf7.exe	update.exe

Executes dropped EXE 1 IoCs

pid	Process
5048	update.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-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bb9e9fd0a962e09ebc4f64fb10159bf7 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\update.exe\" .."	update.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\bb9e9fd0a962e09ebc4f64fb10159bf7 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\update.exe\" .."	update.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\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	4b421db93299565c4a136f1219339f3c7c3e19a8bd215c911a98066715ac3fd3N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	update.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	5048	update.exe
Token: 33	5048	update.exe
Token: SeIncBasePriorityPrivilege	5048	update.exe
Token: 33	5048	update.exe
Token: SeIncBasePriorityPrivilege	5048	update.exe
Token: 33	5048	update.exe
Token: SeIncBasePriorityPrivilege	5048	update.exe
Token: 33	5048	update.exe
Token: SeIncBasePriorityPrivilege	5048	update.exe
Token: 33	5048	update.exe
Token: SeIncBasePriorityPrivilege	5048	update.exe
Token: 33	5048	update.exe
Token: SeIncBasePriorityPrivilege	5048	update.exe
Token: 33	5048	update.exe
Token: SeIncBasePriorityPrivilege	5048	update.exe
Token: 33	5048	update.exe
Token: SeIncBasePriorityPrivilege	5048	update.exe
Token: 33	5048	update.exe
Token: SeIncBasePriorityPrivilege	5048	update.exe
Token: 33	5048	update.exe
Token: SeIncBasePriorityPrivilege	5048	update.exe
Token: 33	5048	update.exe
Token: SeIncBasePriorityPrivilege	5048	update.exe
Token: 33	5048	update.exe
Token: SeIncBasePriorityPrivilege	5048	update.exe
Token: 33	5048	update.exe
Token: SeIncBasePriorityPrivilege	5048	update.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 5048	2044	4b421db93299565c4a136f1219339f3c7c3e19a8bd215c911a98066715ac3fd3N.exe	82
PID 2044 wrote to memory of 5048	2044	4b421db93299565c4a136f1219339f3c7c3e19a8bd215c911a98066715ac3fd3N.exe	82
PID 2044 wrote to memory of 5048	2044	4b421db93299565c4a136f1219339f3c7c3e19a8bd215c911a98066715ac3fd3N.exe	82
PID 5048 wrote to memory of 4816	5048	update.exe	83
PID 5048 wrote to memory of 4816	5048	update.exe	83
PID 5048 wrote to memory of 4816	5048	update.exe	83

C:\Users\Admin\AppData\Local\Temp\4b421db93299565c4a136f1219339f3c7c3e19a8bd215c911a98066715ac3fd3N.exe
"C:\Users\Admin\AppData\Local\Temp\4b421db93299565c4a136f1219339f3c7c3e19a8bd215c911a98066715ac3fd3N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2044
- C:\Users\Admin\AppData\Local\Temp\update.exe
  "C:\Users\Admin\AppData\Local\Temp\update.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:5048
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\update.exe" "update.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:4816

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\update.exe

Filesize
23KB

MD5
d3c4e56ec73b0276ca00a93aa39464f0

SHA1
06b8581db422422554a2c5a0356ebb3fa7860c65

SHA256
4b421db93299565c4a136f1219339f3c7c3e19a8bd215c911a98066715ac3fd3

SHA512
39c9c05754c7588f4dbf8261bd1aec98bf7c7c46a80e22be842d458cbc3a5eacd25efc5e2ecdebc9835347cdfe64016b7174c9b03e38c81d45bd919c1f0973b3

Download Submit
memory/2044-0-0x0000000074CA2000-0x0000000074CA3000-memory.dmp

Filesize
4KB

Download
memory/2044-1-0x0000000074CA0000-0x0000000075251000-memory.dmp

Filesize
5.7MB

Download
memory/2044-2-0x0000000074CA0000-0x0000000075251000-memory.dmp

Filesize
5.7MB

Download
memory/2044-13-0x0000000074CA0000-0x0000000075251000-memory.dmp

Filesize
5.7MB

Download
memory/5048-12-0x0000000074CA0000-0x0000000075251000-memory.dmp

Filesize
5.7MB

Download
memory/5048-14-0x0000000074CA0000-0x0000000075251000-memory.dmp

Filesize
5.7MB

Download
memory/5048-16-0x0000000074CA0000-0x0000000075251000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads