njrat | 3aa2c676f88dc69b493d18a5da4a849186d335575abf3842fa5af567f2ce404e

General

Target

3aa2c676f88dc69b493d18a5da4a849186d335575abf3842fa5af567f2ce404eN.exe
Size

500KB
MD5

8d99fd4b1b5a30d593fbf8691342c330
SHA1

3da6189f17ecf7ee4b05298cf3da765a287b7dcf
SHA256

3aa2c676f88dc69b493d18a5da4a849186d335575abf3842fa5af567f2ce404e
SHA512

c7a9e57c41852fb26466bfbe40705074e2a66dc9682c06d215a480b40c76dacc8e2d3777b78e0919afb5e6544c1275f2a1f632cd5a020261046a6ff4e779360a
SSDEEP

6144:os/C8LWBALoYVqgoaQpa1TJJhbGM0/TqdGqJ4UWB95CmdA3VN1lV:os7LWADXQpaTJON/TqZ+zzwVn

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
4204	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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	3aa2c676f88dc69b493d18a5da4a849186d335575abf3842fa5af567f2ce404eN.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1c071193a393bd32478dc180e73ee37c.exe	msi.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1c071193a393bd32478dc180e73ee37c.exe	msi.exe

Executes dropped EXE 1 IoCs

pid	Process
4760	msi.exe

Adds Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\1c071193a393bd32478dc180e73ee37c = "\"C:\\Windows\\msi.exe\" .."	msi.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\18.exe = "C:\\Users\\Admin\\AppData\\RoamingMicrosoft\\System\\Services\\18.exe"	3aa2c676f88dc69b493d18a5da4a849186d335575abf3842fa5af567f2ce404eN.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\18.exe = "C:\\Users\\Admin\\AppData\\RoamingMicrosoft\\System\\Services\\18.exe"	3aa2c676f88dc69b493d18a5da4a849186d335575abf3842fa5af567f2ce404eN.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\18.exe = "C:\\Users\\Admin\\AppData\\RoamingMicrosoft\\System\\Services\\18.exe"	msi.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\18.exe = "C:\\Users\\Admin\\AppData\\RoamingMicrosoft\\System\\Services\\18.exe"	msi.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\1c071193a393bd32478dc180e73ee37c = "\"C:\\Windows\\msi.exe\" .."	msi.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\msi.exe	3aa2c676f88dc69b493d18a5da4a849186d335575abf3842fa5af567f2ce404eN.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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	3aa2c676f88dc69b493d18a5da4a849186d335575abf3842fa5af567f2ce404eN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	4760	msi.exe
Token: 33	4760	msi.exe
Token: SeIncBasePriorityPrivilege	4760	msi.exe
Token: 33	4760	msi.exe
Token: SeIncBasePriorityPrivilege	4760	msi.exe
Token: 33	4760	msi.exe
Token: SeIncBasePriorityPrivilege	4760	msi.exe
Token: 33	4760	msi.exe
Token: SeIncBasePriorityPrivilege	4760	msi.exe
Token: 33	4760	msi.exe
Token: SeIncBasePriorityPrivilege	4760	msi.exe
Token: 33	4760	msi.exe
Token: SeIncBasePriorityPrivilege	4760	msi.exe
Token: 33	4760	msi.exe
Token: SeIncBasePriorityPrivilege	4760	msi.exe
Token: 33	4760	msi.exe
Token: SeIncBasePriorityPrivilege	4760	msi.exe
Token: 33	4760	msi.exe
Token: SeIncBasePriorityPrivilege	4760	msi.exe
Token: 33	4760	msi.exe
Token: SeIncBasePriorityPrivilege	4760	msi.exe
Token: 33	4760	msi.exe
Token: SeIncBasePriorityPrivilege	4760	msi.exe
Token: 33	4760	msi.exe
Token: SeIncBasePriorityPrivilege	4760	msi.exe
Token: 33	4760	msi.exe
Token: SeIncBasePriorityPrivilege	4760	msi.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4808 wrote to memory of 4760	4808	3aa2c676f88dc69b493d18a5da4a849186d335575abf3842fa5af567f2ce404eN.exe	82
PID 4808 wrote to memory of 4760	4808	3aa2c676f88dc69b493d18a5da4a849186d335575abf3842fa5af567f2ce404eN.exe	82
PID 4808 wrote to memory of 4760	4808	3aa2c676f88dc69b493d18a5da4a849186d335575abf3842fa5af567f2ce404eN.exe	82
PID 4760 wrote to memory of 4204	4760	msi.exe	87
PID 4760 wrote to memory of 4204	4760	msi.exe	87
PID 4760 wrote to memory of 4204	4760	msi.exe	87

C:\Users\Admin\AppData\Local\Temp\3aa2c676f88dc69b493d18a5da4a849186d335575abf3842fa5af567f2ce404eN.exe
"C:\Users\Admin\AppData\Local\Temp\3aa2c676f88dc69b493d18a5da4a849186d335575abf3842fa5af567f2ce404eN.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4808
- C:\Windows\msi.exe
  "C:\Windows\msi.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:4760
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Windows\msi.exe" "msi.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:4204

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:\Windows\msi.exe

Filesize
500KB

MD5
8d99fd4b1b5a30d593fbf8691342c330

SHA1
3da6189f17ecf7ee4b05298cf3da765a287b7dcf

SHA256
3aa2c676f88dc69b493d18a5da4a849186d335575abf3842fa5af567f2ce404e

SHA512
c7a9e57c41852fb26466bfbe40705074e2a66dc9682c06d215a480b40c76dacc8e2d3777b78e0919afb5e6544c1275f2a1f632cd5a020261046a6ff4e779360a

Download Submit
memory/4760-18-0x00000000754B0000-0x0000000075A61000-memory.dmp

Filesize
5.7MB

Download
memory/4760-20-0x00000000754B0000-0x0000000075A61000-memory.dmp

Filesize
5.7MB

Download
memory/4760-22-0x00000000754B0000-0x0000000075A61000-memory.dmp

Filesize
5.7MB

Download
memory/4808-0-0x00000000754B2000-0x00000000754B3000-memory.dmp

Filesize
4KB

Download
memory/4808-1-0x00000000754B0000-0x0000000075A61000-memory.dmp

Filesize
5.7MB

Download
memory/4808-2-0x00000000754B0000-0x0000000075A61000-memory.dmp

Filesize
5.7MB

Download
memory/4808-17-0x00000000754B0000-0x0000000075A61000-memory.dmp

Filesize
5.7MB

Download
memory/4808-16-0x00000000754B2000-0x00000000754B3000-memory.dmp

Filesize
4KB

Download
memory/4808-19-0x00000000754B0000-0x0000000075A61000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads