njrat | 7f937fc5584fdf37ae832713d9e96ef8978b8056d35ff07d23a4c17cc22bbdcf

General

Target

7f937fc5584fdf37ae832713d9e96ef8978b8056d35ff07d23a4c17cc22bbdcf.exe
Size

621KB
MD5

47661c26a409fcb5cb55ebc4848a9ea8
SHA1

049dc4b672e2f0b1ed88d9aeb9036f575fca3dc0
SHA256

7f937fc5584fdf37ae832713d9e96ef8978b8056d35ff07d23a4c17cc22bbdcf
SHA512

ba70500436e1544db0374241ecaa3eebc7bae5433b0c862c93a3f94cfa25d0e11ad90cd65c7dd8079ea701b169b5c686a7768a6800ab604fa8e865eacdc99693
SSDEEP

12288:pW4dm3jps4Gg0I8jJdrA/K8i5z4gcOv/xGrHzHiTZH/svVU+w:KjpsdI4/rhX4gLv/xGXCTZH/sq+w

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
4624	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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	7f937fc5584fdf37ae832713d9e96ef8978b8056d35ff07d23a4c17cc22bbdcf.exe

Executes dropped EXE 1 IoCs

pid	Process
920	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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b644c8acdfbc8f6fea9078ad31527136 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\b644c8acdfbc8f6fea9078ad31527136 = "\"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	7f937fc5584fdf37ae832713d9e96ef8978b8056d35ff07d23a4c17cc22bbdcf.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	920	server.exe
Token: 33	920	server.exe
Token: SeIncBasePriorityPrivilege	920	server.exe
Token: 33	920	server.exe
Token: SeIncBasePriorityPrivilege	920	server.exe
Token: 33	920	server.exe
Token: SeIncBasePriorityPrivilege	920	server.exe
Token: 33	920	server.exe
Token: SeIncBasePriorityPrivilege	920	server.exe
Token: 33	920	server.exe
Token: SeIncBasePriorityPrivilege	920	server.exe
Token: 33	920	server.exe
Token: SeIncBasePriorityPrivilege	920	server.exe
Token: 33	920	server.exe
Token: SeIncBasePriorityPrivilege	920	server.exe
Token: 33	920	server.exe
Token: SeIncBasePriorityPrivilege	920	server.exe
Token: 33	920	server.exe
Token: SeIncBasePriorityPrivilege	920	server.exe
Token: 33	920	server.exe
Token: SeIncBasePriorityPrivilege	920	server.exe
Token: 33	920	server.exe
Token: SeIncBasePriorityPrivilege	920	server.exe
Token: 33	920	server.exe
Token: SeIncBasePriorityPrivilege	920	server.exe
Token: 33	920	server.exe
Token: SeIncBasePriorityPrivilege	920	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1876 wrote to memory of 920	1876	7f937fc5584fdf37ae832713d9e96ef8978b8056d35ff07d23a4c17cc22bbdcf.exe	84
PID 1876 wrote to memory of 920	1876	7f937fc5584fdf37ae832713d9e96ef8978b8056d35ff07d23a4c17cc22bbdcf.exe	84
PID 1876 wrote to memory of 920	1876	7f937fc5584fdf37ae832713d9e96ef8978b8056d35ff07d23a4c17cc22bbdcf.exe	84
PID 920 wrote to memory of 4624	920	server.exe	92
PID 920 wrote to memory of 4624	920	server.exe	92
PID 920 wrote to memory of 4624	920	server.exe	92

C:\Users\Admin\AppData\Local\Temp\7f937fc5584fdf37ae832713d9e96ef8978b8056d35ff07d23a4c17cc22bbdcf.exe
"C:\Users\Admin\AppData\Local\Temp\7f937fc5584fdf37ae832713d9e96ef8978b8056d35ff07d23a4c17cc22bbdcf.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1876
- 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:920
- - 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:4624

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
621KB

MD5
47661c26a409fcb5cb55ebc4848a9ea8

SHA1
049dc4b672e2f0b1ed88d9aeb9036f575fca3dc0

SHA256
7f937fc5584fdf37ae832713d9e96ef8978b8056d35ff07d23a4c17cc22bbdcf

SHA512
ba70500436e1544db0374241ecaa3eebc7bae5433b0c862c93a3f94cfa25d0e11ad90cd65c7dd8079ea701b169b5c686a7768a6800ab604fa8e865eacdc99693

Download Submit
memory/920-14-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/920-13-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/920-15-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/1876-0-0x0000000074F52000-0x0000000074F53000-memory.dmp

Filesize
4KB

Download
memory/1876-1-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/1876-2-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/1876-12-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads