njrat | 23d041615509c122bc7ecebae1a6ccc7c92d1cd8ac166904e98a030c271a5d16

General

Target
Server.exe
Size 23KB
Sample240727-tkcb6sxbpm
SHA256 23d041615509c122bc7ecebae1a6ccc7c92d1cd8ac166904e98a030c271a5d16
MD5 eefce7d017206bb0427ddec59dce0c24
SHA1 c588ceb9388eecabd9eaded2a4791a433dc0f617
SHA512 b7e66ee0a1a090f866e584ba0eefe7424072a306b00f9817fabc882325012218477905105dbc52cfa89bcf2bdecd7fb27c29566da3177072bf7486e3d842bfab
SSDEEP 384:VY324bcgPiJLQrfARGSRUJ5bY6ZgvSMBD3t8mRvR6JZlbw8hqIusZzZ3a:qL2s+tRpRpcnuJ
MD5 SHA1 SHA512 SSDEEP

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
1308	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-1-5-21-3419463127-3903270268-2580331543-1000\Control Panel\International\Geo\Nation	Server.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9e9ca6907ecb9894c8165310b4f83b54.exe	Testing.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9e9ca6907ecb9894c8165310b4f83b54.exe	Testing.exe

Executes dropped EXE 1 IoCs

pid	Process
3824	Testing.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-1-5-21-3419463127-3903270268-2580331543-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\9e9ca6907ecb9894c8165310b4f83b54 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Testing.exe\" .."	Testing.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\9e9ca6907ecb9894c8165310b4f83b54 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Testing.exe\" .."	Testing.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	Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Testing.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 31 IoCs

description	pid	Process
Token: SeDebugPrivilege	3824	Testing.exe
Token: 33	3824	Testing.exe
Token: SeIncBasePriorityPrivilege	3824	Testing.exe
Token: 33	3824	Testing.exe
Token: SeIncBasePriorityPrivilege	3824	Testing.exe
Token: 33	3824	Testing.exe
Token: SeIncBasePriorityPrivilege	3824	Testing.exe
Token: 33	3824	Testing.exe
Token: SeIncBasePriorityPrivilege	3824	Testing.exe
Token: 33	3824	Testing.exe
Token: SeIncBasePriorityPrivilege	3824	Testing.exe
Token: 33	3824	Testing.exe
Token: SeIncBasePriorityPrivilege	3824	Testing.exe
Token: 33	3824	Testing.exe
Token: SeIncBasePriorityPrivilege	3824	Testing.exe
Token: 33	3824	Testing.exe
Token: SeIncBasePriorityPrivilege	3824	Testing.exe
Token: 33	3824	Testing.exe
Token: SeIncBasePriorityPrivilege	3824	Testing.exe
Token: 33	3824	Testing.exe
Token: SeIncBasePriorityPrivilege	3824	Testing.exe
Token: 33	3824	Testing.exe
Token: SeIncBasePriorityPrivilege	3824	Testing.exe
Token: 33	3824	Testing.exe
Token: SeIncBasePriorityPrivilege	3824	Testing.exe
Token: 33	3824	Testing.exe
Token: SeIncBasePriorityPrivilege	3824	Testing.exe
Token: 33	3824	Testing.exe
Token: SeIncBasePriorityPrivilege	3824	Testing.exe
Token: 33	3824	Testing.exe
Token: SeIncBasePriorityPrivilege	3824	Testing.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 376 wrote to memory of 3824	376	Server.exe	91
PID 376 wrote to memory of 3824	376	Server.exe	91
PID 376 wrote to memory of 3824	376	Server.exe	91
PID 3824 wrote to memory of 1308	3824	Testing.exe	95
PID 3824 wrote to memory of 1308	3824	Testing.exe	95
PID 3824 wrote to memory of 1308	3824	Testing.exe	95

C:\Users\Admin\AppData\Local\Temp\Server.exe
"C:\Users\Admin\AppData\Local\Temp\Server.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:376
- C:\Users\Admin\AppData\Local\Temp\Testing.exe
  "C:\Users\Admin\AppData\Local\Temp\Testing.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:3824
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Testing.exe" "Testing.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:1308

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

Testing.exe

Path C:\Users\Admin\AppData\Local\Temp\Testing.exe
Size 23KB
SHA256 23d041615509c122bc7ecebae1a6ccc7c92d1cd8ac166904e98a030c271a5d16
MD5 eefce7d017206bb0427ddec59dce0c24
SHA1 c588ceb9388eecabd9eaded2a4791a433dc0f617
SHA512 b7e66ee0a1a090f866e584ba0eefe7424072a306b00f9817fabc882325012218477905105dbc52cfa89bcf2bdecd7fb27c29566da3177072bf7486e3d842bfab
SSDEEP 384:VY324bcgPiJLQrfARGSRUJ5bY6ZgvSMBD3t8mRvR6JZlbw8hqIusZzZ3a:qL2s+tRpRpcnuJ
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/376-0-0x0000000074912000-0x0000000074913000-memory.dmp

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memory/376-1-0x0000000074910000-0x0000000074EC1000-memory.dmp

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memory/376-2-0x0000000074910000-0x0000000074EC1000-memory.dmp

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memory/376-14-0x0000000074910000-0x0000000074EC1000-memory.dmp

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memory/3824-11-0x0000000074910000-0x0000000074EC1000-memory.dmp

Download

memory/3824-12-0x0000000074910000-0x0000000074EC1000-memory.dmp

Download

memory/3824-16-0x0000000074910000-0x0000000074EC1000-memory.dmp

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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