njrat | f224346929620555fc8ffea8a7814cccd5073434c3607583e4e87414cb599352

General

Target

f224346929620555fc8ffea8a7814cccd5073434c3607583e4e87414cb599352.exe
Size

37KB
MD5

fdf0546d58297a6e51596876a12239b8
SHA1

e3a107f3f5a3d42548a1be0e8a23fc24206f70e5
SHA256

f224346929620555fc8ffea8a7814cccd5073434c3607583e4e87414cb599352
SHA512

56ab06704bb457c332afb7ea0703c826c1bf94dcc83912d8478d9b81d67e7e3eaffe25ba8883df39fb9ee3c0b0644b87cd0970274a6fc1717fa620af9e9deac7
SSDEEP

768:pulv2NWtkr+kJruz5irrM+rMRa8Nujp8t:kluNWiqk1u80+gRJNq

Score

10^/10

njrat ktx discovery trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

ktx

C2

kartoxamc.ga:4726

Mutex

9bce47647dc8a6718dc5325121b298da

Attributes

reg_key
9bce47647dc8a6718dc5325121b298da
splitter
|'|'|

Signatures

Njrat family
njrat
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	AcroRd32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f224346929620555fc8ffea8a7814cccd5073434c3607583e4e87414cb599352.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies registry class 7 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
888	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
888	AcroRd32.exe
888	AcroRd32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1944 wrote to memory of 2404	1944	f224346929620555fc8ffea8a7814cccd5073434c3607583e4e87414cb599352.exe	30
PID 1944 wrote to memory of 2404	1944	f224346929620555fc8ffea8a7814cccd5073434c3607583e4e87414cb599352.exe	30
PID 1944 wrote to memory of 2404	1944	f224346929620555fc8ffea8a7814cccd5073434c3607583e4e87414cb599352.exe	30
PID 1944 wrote to memory of 2404	1944	f224346929620555fc8ffea8a7814cccd5073434c3607583e4e87414cb599352.exe	30
PID 1944 wrote to memory of 2404	1944	f224346929620555fc8ffea8a7814cccd5073434c3607583e4e87414cb599352.exe	30
PID 1944 wrote to memory of 2404	1944	f224346929620555fc8ffea8a7814cccd5073434c3607583e4e87414cb599352.exe	30
PID 1944 wrote to memory of 2404	1944	f224346929620555fc8ffea8a7814cccd5073434c3607583e4e87414cb599352.exe	30
PID 2404 wrote to memory of 888	2404	rundll32.exe	31
PID 2404 wrote to memory of 888	2404	rundll32.exe	31
PID 2404 wrote to memory of 888	2404	rundll32.exe	31
PID 2404 wrote to memory of 888	2404	rundll32.exe	31

C:\Users\Admin\AppData\Local\Temp\f224346929620555fc8ffea8a7814cccd5073434c3607583e4e87414cb599352.exe
"C:\Users\Admin\AppData\Local\Temp\f224346929620555fc8ffea8a7814cccd5073434c3607583e4e87414cb599352.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1944
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\microsp
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2404
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\microsp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:888

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\microsp

Filesize
37KB

MD5
fdf0546d58297a6e51596876a12239b8

SHA1
e3a107f3f5a3d42548a1be0e8a23fc24206f70e5

SHA256
f224346929620555fc8ffea8a7814cccd5073434c3607583e4e87414cb599352

SHA512
56ab06704bb457c332afb7ea0703c826c1bf94dcc83912d8478d9b81d67e7e3eaffe25ba8883df39fb9ee3c0b0644b87cd0970274a6fc1717fa620af9e9deac7

Download Submit
C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
2154711eaec971049646fb9e074451ea

SHA1
b67e87b3ef15f27eb4f3ae04c1db70ef73ae5b2d

SHA256
5f6706567069641649e8fc98f3cc3e0b94c82bb2853a5c2a1cca5f9a2c027758

SHA512
c7c2c507cc126da79a8e40da467ad6fac6a3a8fb7f6d7cb75bd30ab80f956830954436f45586dfe4bb489b64210e1ff015f3537814033c358e0d4ae3e0d80cff

Download Submit
memory/1944-0-0x0000000074DA1000-0x0000000074DA2000-memory.dmp

Filesize
4KB

Download
memory/1944-1-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/1944-2-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/1944-5-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download

Analysis

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