njrat | 827a131eaaa2f5af4541749f1c65a6a0614d7f6c82c14e01a029dbd707965fe0

General

Target

827a131eaaa2f5af4541749f1c65a6a0614d7f6c82c14e01a029dbd707965fe0N.exe
Size

23KB
MD5

1cbf681698dfec44a46f50b891017170
SHA1

5fa4fbcc952d2cf973d7c15b7dad2523f09edc23
SHA256

827a131eaaa2f5af4541749f1c65a6a0614d7f6c82c14e01a029dbd707965fe0
SHA512

611fcdb8a4148549dbf7e0a539ecdf1c49187c4b0ae0e606aec634f09abb3df6460c1c4c7dedb2f65d30a89c86157a090ef674a41b32cf3a88a46bde56d3f40d
SSDEEP

384:foWtkEwn65rgjAsGipk55D16xgXakhbZD0mRvR6JZlbw8hqIusZzZIB:47O89p2rRpcnu7

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

pid	Process
4764	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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	827a131eaaa2f5af4541749f1c65a6a0614d7f6c82c14e01a029dbd707965fe0N.exe

Executes dropped EXE 1 IoCs

pid	Process
4184	server.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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\7657c14284185fbd3fb108b43c7467ba = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\7657c14284185fbd3fb108b43c7467ba = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.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	827a131eaaa2f5af4541749f1c65a6a0614d7f6c82c14e01a029dbd707965fe0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	4184	server.exe
Token: 33	4184	server.exe
Token: SeIncBasePriorityPrivilege	4184	server.exe
Token: 33	4184	server.exe
Token: SeIncBasePriorityPrivilege	4184	server.exe
Token: 33	4184	server.exe
Token: SeIncBasePriorityPrivilege	4184	server.exe
Token: 33	4184	server.exe
Token: SeIncBasePriorityPrivilege	4184	server.exe
Token: 33	4184	server.exe
Token: SeIncBasePriorityPrivilege	4184	server.exe
Token: 33	4184	server.exe
Token: SeIncBasePriorityPrivilege	4184	server.exe
Token: 33	4184	server.exe
Token: SeIncBasePriorityPrivilege	4184	server.exe
Token: 33	4184	server.exe
Token: SeIncBasePriorityPrivilege	4184	server.exe
Token: 33	4184	server.exe
Token: SeIncBasePriorityPrivilege	4184	server.exe
Token: 33	4184	server.exe
Token: SeIncBasePriorityPrivilege	4184	server.exe
Token: 33	4184	server.exe
Token: SeIncBasePriorityPrivilege	4184	server.exe
Token: 33	4184	server.exe
Token: SeIncBasePriorityPrivilege	4184	server.exe
Token: 33	4184	server.exe
Token: SeIncBasePriorityPrivilege	4184	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1244 wrote to memory of 4184	1244	827a131eaaa2f5af4541749f1c65a6a0614d7f6c82c14e01a029dbd707965fe0N.exe	95
PID 1244 wrote to memory of 4184	1244	827a131eaaa2f5af4541749f1c65a6a0614d7f6c82c14e01a029dbd707965fe0N.exe	95
PID 1244 wrote to memory of 4184	1244	827a131eaaa2f5af4541749f1c65a6a0614d7f6c82c14e01a029dbd707965fe0N.exe	95
PID 4184 wrote to memory of 4764	4184	server.exe	100
PID 4184 wrote to memory of 4764	4184	server.exe	100
PID 4184 wrote to memory of 4764	4184	server.exe	100

C:\Users\Admin\AppData\Local\Temp\827a131eaaa2f5af4541749f1c65a6a0614d7f6c82c14e01a029dbd707965fe0N.exe
"C:\Users\Admin\AppData\Local\Temp\827a131eaaa2f5af4541749f1c65a6a0614d7f6c82c14e01a029dbd707965fe0N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1244
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4184
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:4764

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\server.exe

Filesize
23KB

MD5
1cbf681698dfec44a46f50b891017170

SHA1
5fa4fbcc952d2cf973d7c15b7dad2523f09edc23

SHA256
827a131eaaa2f5af4541749f1c65a6a0614d7f6c82c14e01a029dbd707965fe0

SHA512
611fcdb8a4148549dbf7e0a539ecdf1c49187c4b0ae0e606aec634f09abb3df6460c1c4c7dedb2f65d30a89c86157a090ef674a41b32cf3a88a46bde56d3f40d

Download Submit
memory/1244-0-0x0000000074712000-0x0000000074713000-memory.dmp

Filesize
4KB

Download
memory/1244-1-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/1244-2-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/1244-13-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4184-12-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4184-14-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4184-15-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4184-16-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads