njrat | 3cb3302cf03974aa75e3ad4f0fcc3423589b1aa4ef881f8e160666b5447914bf

General

Target

3cb3302cf03974aa75e3ad4f0fcc3423589b1aa4ef881f8e160666b5447914bfN.exe
Size

2.0MB
MD5

c44af1be988c6ec6974c084c1809b000
SHA1

0aecdaaf890bc38c506a0a2449d8e489c44c1f52
SHA256

3cb3302cf03974aa75e3ad4f0fcc3423589b1aa4ef881f8e160666b5447914bf
SHA512

d1060afcf8b81eb2d7a9b82bdda8607597511d7965d76e4ac3ccb2e6a9bbb297f6f8e3f943e16b8ae405abce8a6494fbb9df6f077a4228d66592c65dcd06bf63
SSDEEP

49152:ckEGhFigxRw0Cm2LQrhTbBpKmT1To2nZ:pDwVLQrhTbamSsZ

Score

10^/10

njrat === + _ + === %windir%discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

=== + _ + === %WinDir%

C2

microsofthost.freeddns.org:40575

Mutex

bb20f14510d5756907e67527a3de9460

Attributes

reg_key
bb20f14510d5756907e67527a3de9460
splitter
|'|'|

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
1384	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	2.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bb20f14510d5756907e67527a3de9460.exe	System32.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bb20f14510d5756907e67527a3de9460.exe	System32.exe

Executes dropped EXE 2 IoCs

pid	Process
1640	2.exe
4780	System32.exe

Adds Run key to start application 2 TTPs 3 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\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	3cb3302cf03974aa75e3ad4f0fcc3423589b1aa4ef881f8e160666b5447914bfN.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bb20f14510d5756907e67527a3de9460 = "\"C:\\Windows\\System32.exe\" .."	System32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bb20f14510d5756907e67527a3de9460 = "\"C:\\Windows\\System32.exe\" .."	System32.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\System32.exe	2.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\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	3cb3302cf03974aa75e3ad4f0fcc3423589b1aa4ef881f8e160666b5447914bfN.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	4780	System32.exe
Token: 33	4780	System32.exe
Token: SeIncBasePriorityPrivilege	4780	System32.exe
Token: 33	4780	System32.exe
Token: SeIncBasePriorityPrivilege	4780	System32.exe
Token: 33	4780	System32.exe
Token: SeIncBasePriorityPrivilege	4780	System32.exe
Token: 33	4780	System32.exe
Token: SeIncBasePriorityPrivilege	4780	System32.exe
Token: 33	4780	System32.exe
Token: SeIncBasePriorityPrivilege	4780	System32.exe
Token: 33	4780	System32.exe
Token: SeIncBasePriorityPrivilege	4780	System32.exe
Token: 33	4780	System32.exe
Token: SeIncBasePriorityPrivilege	4780	System32.exe
Token: 33	4780	System32.exe
Token: SeIncBasePriorityPrivilege	4780	System32.exe
Token: 33	4780	System32.exe
Token: SeIncBasePriorityPrivilege	4780	System32.exe
Token: 33	4780	System32.exe
Token: SeIncBasePriorityPrivilege	4780	System32.exe
Token: 33	4780	System32.exe
Token: SeIncBasePriorityPrivilege	4780	System32.exe
Token: 33	4780	System32.exe
Token: SeIncBasePriorityPrivilege	4780	System32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 676 wrote to memory of 1640	676	3cb3302cf03974aa75e3ad4f0fcc3423589b1aa4ef881f8e160666b5447914bfN.exe	83
PID 676 wrote to memory of 1640	676	3cb3302cf03974aa75e3ad4f0fcc3423589b1aa4ef881f8e160666b5447914bfN.exe	83
PID 1640 wrote to memory of 4780	1640	2.exe	84
PID 1640 wrote to memory of 4780	1640	2.exe	84
PID 4780 wrote to memory of 1384	4780	System32.exe	85
PID 4780 wrote to memory of 1384	4780	System32.exe	85

C:\Users\Admin\AppData\Local\Temp\3cb3302cf03974aa75e3ad4f0fcc3423589b1aa4ef881f8e160666b5447914bfN.exe
"C:\Users\Admin\AppData\Local\Temp\3cb3302cf03974aa75e3ad4f0fcc3423589b1aa4ef881f8e160666b5447914bfN.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:676
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:1640
- - C:\Windows\System32.exe
    "C:\Windows\System32.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4780
  - - C:\Windows\SYSTEM32\netsh.exe
      netsh firewall add allowedprogram "C:\Windows\System32.exe" "System32.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      Event Triggered Execution: Netsh Helper DLL
      PID:1384

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\IXP000.TMP\2.exe

Filesize
4.3MB

MD5
fa16238baa9af4712b078fe6615943a1

SHA1
0b6095eac869126f1304e23eab30db6e1ce485db

SHA256
ec153e5c5b3227c010e17944335779d934136c7c14cca4a05a0665954e4321d3

SHA512
27110cb650a0eab8789a1e1a1db71bde0cf059cc4892e735f3c49fca15c4dc5192082429817d9236cffc11e570ef65e25a3f371b80e2d297e87efbca6e39e87c

Download Submit
memory/1640-5-0x00007FFE10493000-0x00007FFE10495000-memory.dmp

Filesize
8KB

Download
memory/1640-6-0x0000000000050000-0x0000000000498000-memory.dmp

Filesize
4.3MB

Download
memory/1640-7-0x00007FFE10490000-0x00007FFE10F51000-memory.dmp

Filesize
10.8MB

Download
memory/1640-8-0x0000000000B40000-0x0000000000B4A000-memory.dmp

Filesize
40KB

Download
memory/1640-9-0x0000000000B80000-0x0000000000B8C000-memory.dmp

Filesize
48KB

Download
memory/1640-10-0x0000000000B90000-0x0000000000B9A000-memory.dmp

Filesize
40KB

Download
memory/1640-11-0x0000000000BA0000-0x0000000000BAA000-memory.dmp

Filesize
40KB

Download
memory/1640-12-0x00007FFE10493000-0x00007FFE10495000-memory.dmp

Filesize
8KB

Download
memory/1640-25-0x00007FFE10490000-0x00007FFE10F51000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads