njrat | 06042fb2e2cfd5dedfb3f2be4a12d316a2cdace1afacf669375957e1ca4fa996

General

Target

fsaaopaa.exe
Size

226KB
MD5

b7f58f62502a5155ac07a646870581df
SHA1

a35f597849a966bbcec1f56c1aef1fa8e3482042
SHA256

b75c6dd35858b8ff2b92e8c3a0f78e81187a4d2f32a13983b80cf83a714a9d9a
SHA512

34b928d4aafd3bf459ac927128b5f50468fe234dd7a3dc2be55b72f4b30f8f9ae327bc35901541043418e8d492805c781c3cb64e3391a5a5bcd19c86de58a836
SSDEEP

3072:Ifmk3zW4A+BzItKKUhl3J8eltXkOzzj8oUK9PfRku3pxcrt60r1qyATz:FcGMfl6OzvS6+u/Y60BhA

Score

10^/10

njrat hacked discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

HacKed

C2

fkfgjfgfgg234.no-ip.biz:1177

Mutex

43ff622bd8ca58a32c991fc1ae88370d

Attributes

reg_key
43ff622bd8ca58a32c991fc1ae88370d
splitter
|'|'|

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
1672	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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	fsaaopaa.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\43ff622bd8ca58a32c991fc1ae88370d.exe	[Cool][Name][Facebook].exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\43ff622bd8ca58a32c991fc1ae88370d.exe	[Cool][Name][Facebook].exe

Executes dropped EXE 1 IoCs

pid	Process
4672	[Cool][Name][Facebook].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-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\43ff622bd8ca58a32c991fc1ae88370d = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\[Cool][Name][Facebook].exe\" .."	[Cool][Name][Facebook].exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\43ff622bd8ca58a32c991fc1ae88370d = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\[Cool][Name][Facebook].exe\" .."	[Cool][Name][Facebook].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	fsaaopaa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	[Cool][Name][Facebook].exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe
4672	[Cool][Name][Facebook].exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4672	[Cool][Name][Facebook].exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3988 wrote to memory of 4672	3988	fsaaopaa.exe	85
PID 3988 wrote to memory of 4672	3988	fsaaopaa.exe	85
PID 3988 wrote to memory of 4672	3988	fsaaopaa.exe	85
PID 4672 wrote to memory of 1672	4672	[Cool][Name][Facebook].exe	86
PID 4672 wrote to memory of 1672	4672	[Cool][Name][Facebook].exe	86
PID 4672 wrote to memory of 1672	4672	[Cool][Name][Facebook].exe	86

C:\Users\Admin\AppData\Local\Temp\fsaaopaa.exe
"C:\Users\Admin\AppData\Local\Temp\fsaaopaa.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3988
- C:\Users\Admin\AppData\Local\Temp\[Cool][Name][Facebook].exe
  "C:\Users\Admin\AppData\Local\Temp\[Cool][Name][Facebook].exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4672
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\[Cool][Name][Facebook].exe" "[Cool][Name][Facebook].exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:1672

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\[Cool][Name][Facebook].exe

Filesize
226KB

MD5
b7f58f62502a5155ac07a646870581df

SHA1
a35f597849a966bbcec1f56c1aef1fa8e3482042

SHA256
b75c6dd35858b8ff2b92e8c3a0f78e81187a4d2f32a13983b80cf83a714a9d9a

SHA512
34b928d4aafd3bf459ac927128b5f50468fe234dd7a3dc2be55b72f4b30f8f9ae327bc35901541043418e8d492805c781c3cb64e3391a5a5bcd19c86de58a836

Download Submit
memory/3988-19-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/3988-0-0x000000007523E000-0x000000007523F000-memory.dmp

Filesize
4KB

Download
memory/3988-3-0x00000000015A0000-0x00000000015AE000-memory.dmp

Filesize
56KB

Download
memory/3988-4-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/3988-5-0x0000000005C30000-0x00000000061D4000-memory.dmp

Filesize
5.6MB

Download
memory/3988-1-0x0000000000AB0000-0x0000000000AF0000-memory.dmp

Filesize
256KB

Download
memory/3988-2-0x00000000054E0000-0x000000000557C000-memory.dmp

Filesize
624KB

Download
memory/4672-20-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/4672-18-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/4672-22-0x0000000005430000-0x00000000054C2000-memory.dmp

Filesize
584KB

Download
memory/4672-23-0x00000000053F0000-0x00000000053FA000-memory.dmp

Filesize
40KB

Download
memory/4672-24-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/4672-25-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/4672-26-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/4672-27-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads