njrat | f224346929620555fc8ffea8a7814cccd5073434c3607583e4e87414cb599352

General

Target

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

Modifies registry class 7 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000_CLASSES\_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000_CLASSES\_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000_CLASSES\_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000_CLASSES\_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000_CLASSES\_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000_CLASSES\_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2756	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2756	AcroRd32.exe
2756	AcroRd32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2772 wrote to memory of 2960	2772	spofrln.exe	31
PID 2772 wrote to memory of 2960	2772	spofrln.exe	31
PID 2772 wrote to memory of 2960	2772	spofrln.exe	31
PID 2772 wrote to memory of 2960	2772	spofrln.exe	31
PID 2772 wrote to memory of 2960	2772	spofrln.exe	31
PID 2772 wrote to memory of 2960	2772	spofrln.exe	31
PID 2772 wrote to memory of 2960	2772	spofrln.exe	31
PID 2960 wrote to memory of 2756	2960	rundll32.exe	32
PID 2960 wrote to memory of 2756	2960	rundll32.exe	32
PID 2960 wrote to memory of 2756	2960	rundll32.exe	32
PID 2960 wrote to memory of 2756	2960	rundll32.exe	32

C:\Users\Admin\AppData\Local\Temp\spofrln.exe
"C:\Users\Admin\AppData\Local\Temp\spofrln.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2772
- 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:2960
- - 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:2756

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

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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
4a93134af102b6d19ccf96f1e7843f72

SHA1
730a4a52d091cd2e8b694a7df15453d231a37d13

SHA256
c2e08fb2f006deaab80da3a1e475031c9533190ca6c58f4a1f35118804e3eac4

SHA512
88550e7db14e9c0b55c8ec75d02752a183fce76c912505b00f66237b88daeff71345ac8ee5a3e2b4ce3079be517be5bc8bfb92c14acb5c89a20d92ee26d4472b

Download Submit
memory/2772-0-0x0000000074981000-0x0000000074982000-memory.dmp

Filesize
4KB

Download
memory/2772-1-0x0000000074980000-0x0000000074F2B000-memory.dmp

Filesize
5.7MB

Download
memory/2772-2-0x0000000074980000-0x0000000074F2B000-memory.dmp

Filesize
5.7MB

Download
memory/2772-5-0x0000000074980000-0x0000000074F2B000-memory.dmp

Filesize
5.7MB

Download

Analysis

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