njrat | d87c996cfd1abbc02cdadb745437e39c8b2fc85e496a1afce48da8710b077602

General

Target

d87c996cfd1abbc02cdadb745437e39c8b2fc85e496a1afce48da8710b077602N.exe
Size

3.6MB
MD5

dc72ce4f3e15374078c0d2c2df64d100
SHA1

3069cab976c91dcf1db4945db5091f39f4dcfebc
SHA256

d87c996cfd1abbc02cdadb745437e39c8b2fc85e496a1afce48da8710b077602
SHA512

31ec1c2bde073b17ad93c07f4b2f50562da6d1f62818888d471115fc26a4c5508e3f63f3fa71b773a08680c102ee1bae0107f84d1326f531024119a8a65c052b
SSDEEP

98304:wsHPc4s96Pp7mdzFbRWR1K9ch0DplaeMDmmJ6q:w/6PSyechFeMDX

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
4016	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	d87c996cfd1abbc02cdadb745437e39c8b2fc85e496a1afce48da8710b077602N.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\0fc74e1b3981e83f4bddb92a1de55882.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\0fc74e1b3981e83f4bddb92a1de55882.exe	server.exe

Executes dropped EXE 1 IoCs

pid	Process
5060	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\0fc74e1b3981e83f4bddb92a1de55882 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\0fc74e1b3981e83f4bddb92a1de55882 = "\"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	d87c996cfd1abbc02cdadb745437e39c8b2fc85e496a1afce48da8710b077602N.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	5060	server.exe
Token: 33	5060	server.exe
Token: SeIncBasePriorityPrivilege	5060	server.exe
Token: 33	5060	server.exe
Token: SeIncBasePriorityPrivilege	5060	server.exe
Token: 33	5060	server.exe
Token: SeIncBasePriorityPrivilege	5060	server.exe
Token: 33	5060	server.exe
Token: SeIncBasePriorityPrivilege	5060	server.exe
Token: 33	5060	server.exe
Token: SeIncBasePriorityPrivilege	5060	server.exe
Token: 33	5060	server.exe
Token: SeIncBasePriorityPrivilege	5060	server.exe
Token: 33	5060	server.exe
Token: SeIncBasePriorityPrivilege	5060	server.exe
Token: 33	5060	server.exe
Token: SeIncBasePriorityPrivilege	5060	server.exe
Token: 33	5060	server.exe
Token: SeIncBasePriorityPrivilege	5060	server.exe
Token: 33	5060	server.exe
Token: SeIncBasePriorityPrivilege	5060	server.exe
Token: 33	5060	server.exe
Token: SeIncBasePriorityPrivilege	5060	server.exe
Token: 33	5060	server.exe
Token: SeIncBasePriorityPrivilege	5060	server.exe
Token: 33	5060	server.exe
Token: SeIncBasePriorityPrivilege	5060	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4772 wrote to memory of 5060	4772	d87c996cfd1abbc02cdadb745437e39c8b2fc85e496a1afce48da8710b077602N.exe	89
PID 4772 wrote to memory of 5060	4772	d87c996cfd1abbc02cdadb745437e39c8b2fc85e496a1afce48da8710b077602N.exe	89
PID 4772 wrote to memory of 5060	4772	d87c996cfd1abbc02cdadb745437e39c8b2fc85e496a1afce48da8710b077602N.exe	89
PID 5060 wrote to memory of 4016	5060	server.exe	97
PID 5060 wrote to memory of 4016	5060	server.exe	97
PID 5060 wrote to memory of 4016	5060	server.exe	97

C:\Users\Admin\AppData\Local\Temp\d87c996cfd1abbc02cdadb745437e39c8b2fc85e496a1afce48da8710b077602N.exe
"C:\Users\Admin\AppData\Local\Temp\d87c996cfd1abbc02cdadb745437e39c8b2fc85e496a1afce48da8710b077602N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4772
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.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:5060
- - 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:4016

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
3.6MB

MD5
dc72ce4f3e15374078c0d2c2df64d100

SHA1
3069cab976c91dcf1db4945db5091f39f4dcfebc

SHA256
d87c996cfd1abbc02cdadb745437e39c8b2fc85e496a1afce48da8710b077602

SHA512
31ec1c2bde073b17ad93c07f4b2f50562da6d1f62818888d471115fc26a4c5508e3f63f3fa71b773a08680c102ee1bae0107f84d1326f531024119a8a65c052b

Download Submit
memory/4772-0-0x00000000745E2000-0x00000000745E3000-memory.dmp

Filesize
4KB

Download
memory/4772-1-0x00000000745E0000-0x0000000074B91000-memory.dmp

Filesize
5.7MB

Download
memory/4772-2-0x00000000745E0000-0x0000000074B91000-memory.dmp

Filesize
5.7MB

Download
memory/4772-11-0x00000000745E2000-0x00000000745E3000-memory.dmp

Filesize
4KB

Download
memory/4772-13-0x00000000745E0000-0x0000000074B91000-memory.dmp

Filesize
5.7MB

Download
memory/4772-15-0x00000000745E0000-0x0000000074B91000-memory.dmp

Filesize
5.7MB

Download
memory/5060-14-0x00000000745E0000-0x0000000074B91000-memory.dmp

Filesize
5.7MB

Download
memory/5060-16-0x00000000745E0000-0x0000000074B91000-memory.dmp

Filesize
5.7MB

Download
memory/5060-17-0x00000000745E0000-0x0000000074B91000-memory.dmp

Filesize
5.7MB

Download
memory/5060-19-0x00000000745E0000-0x0000000074B91000-memory.dmp

Filesize
5.7MB

Download
memory/5060-20-0x00000000745E0000-0x0000000074B91000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads