njrat | a1912487964fbfa6a9004a0889bde004a7b3d007e98706b79688bbb6229af557

Analysis

max time kernel
151s
max time network
189s
platform
windows7_x64
resource
win7v20210410
submitted
13-08-2021 12:39

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General

Target

37A8EE92838E77CF667250CEDD0CECF8.exe
Size

501KB
MD5

37a8ee92838e77cf667250cedd0cecf8
SHA1

1c63553822af742ee07fb27865c51b54b74f1a27
SHA256

a1912487964fbfa6a9004a0889bde004a7b3d007e98706b79688bbb6229af557
SHA512

d943bcfccfa3710a6c311dfb4f13325a1fb39f77392897928e196b07d4c2209aa44e959d9b265530a7c0adfdf87db9950997d729b9811c541c2ff531f69e115c

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

imfares.ddns.net:9090

doza122.con-ip.com:5552

Mutex

21010c58298d9aa69d2fa375e98ef354

Attributes

reg_key
21010c58298d9aa69d2fa375e98ef354
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Executes dropped EXE 4 IoCs

pid	Process
1968	Server.exe
1696	ss.exe
576	windowsdefender.exe
936	midia.exe

Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\84398377c5556d3df54a82be74cfa960.exe	midia.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\84398377c5556d3df54a82be74cfa960.exe	midia.exe

Loads dropped DLL 1 IoCs

pid	Process
1968	Server.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\21010c58298d9aa69d2fa375e98ef354 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\ss.exe\" .."	ss.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\21010c58298d9aa69d2fa375e98ef354 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\ss.exe\" .."	ss.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\84398377c5556d3df54a82be74cfa960 = "\"C:\\Users\\Admin\\AppData\\Roaming\\midia.exe\" .."	midia.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\84398377c5556d3df54a82be74cfa960 = "\"C:\\Users\\Admin\\AppData\\Roaming\\midia.exe\" .."	midia.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 60 IoCs

description	pid	Process
Token: SeDebugPrivilege	1696	ss.exe
Token: 33	1696	ss.exe
Token: SeIncBasePriorityPrivilege	1696	ss.exe
Token: SeDebugPrivilege	936	midia.exe
Token: 33	1696	ss.exe
Token: SeIncBasePriorityPrivilege	1696	ss.exe
Token: 33	936	midia.exe
Token: SeIncBasePriorityPrivilege	936	midia.exe
Token: 33	1696	ss.exe
Token: SeIncBasePriorityPrivilege	1696	ss.exe
Token: 33	936	midia.exe
Token: SeIncBasePriorityPrivilege	936	midia.exe
Token: 33	1696	ss.exe
Token: SeIncBasePriorityPrivilege	1696	ss.exe
Token: 33	936	midia.exe
Token: SeIncBasePriorityPrivilege	936	midia.exe
Token: 33	1696	ss.exe
Token: SeIncBasePriorityPrivilege	1696	ss.exe
Token: 33	936	midia.exe
Token: SeIncBasePriorityPrivilege	936	midia.exe
Token: 33	1696	ss.exe
Token: SeIncBasePriorityPrivilege	1696	ss.exe
Token: 33	936	midia.exe
Token: SeIncBasePriorityPrivilege	936	midia.exe
Token: 33	1696	ss.exe
Token: SeIncBasePriorityPrivilege	1696	ss.exe
Token: 33	936	midia.exe
Token: SeIncBasePriorityPrivilege	936	midia.exe
Token: 33	1696	ss.exe
Token: SeIncBasePriorityPrivilege	1696	ss.exe
Token: 33	936	midia.exe
Token: SeIncBasePriorityPrivilege	936	midia.exe
Token: 33	1696	ss.exe
Token: SeIncBasePriorityPrivilege	1696	ss.exe
Token: 33	936	midia.exe
Token: SeIncBasePriorityPrivilege	936	midia.exe
Token: 33	1696	ss.exe
Token: SeIncBasePriorityPrivilege	1696	ss.exe
Token: 33	936	midia.exe
Token: SeIncBasePriorityPrivilege	936	midia.exe
Token: 33	1696	ss.exe
Token: SeIncBasePriorityPrivilege	1696	ss.exe
Token: 33	936	midia.exe
Token: SeIncBasePriorityPrivilege	936	midia.exe
Token: 33	1696	ss.exe
Token: SeIncBasePriorityPrivilege	1696	ss.exe
Token: 33	936	midia.exe
Token: SeIncBasePriorityPrivilege	936	midia.exe
Token: 33	1696	ss.exe
Token: SeIncBasePriorityPrivilege	1696	ss.exe
Token: 33	936	midia.exe
Token: SeIncBasePriorityPrivilege	936	midia.exe
Token: 33	1696	ss.exe
Token: SeIncBasePriorityPrivilege	1696	ss.exe
Token: 33	936	midia.exe
Token: SeIncBasePriorityPrivilege	936	midia.exe
Token: 33	1696	ss.exe
Token: SeIncBasePriorityPrivilege	1696	ss.exe
Token: 33	936	midia.exe
Token: SeIncBasePriorityPrivilege	936	midia.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1668 wrote to memory of 1968	1668	37A8EE92838E77CF667250CEDD0CECF8.exe	26
PID 1668 wrote to memory of 1968	1668	37A8EE92838E77CF667250CEDD0CECF8.exe	26
PID 1668 wrote to memory of 1968	1668	37A8EE92838E77CF667250CEDD0CECF8.exe	26
PID 1668 wrote to memory of 1968	1668	37A8EE92838E77CF667250CEDD0CECF8.exe	26
PID 1968 wrote to memory of 1696	1968	Server.exe	30
PID 1968 wrote to memory of 1696	1968	Server.exe	30
PID 1968 wrote to memory of 1696	1968	Server.exe	30
PID 1968 wrote to memory of 1696	1968	Server.exe	30
PID 1668 wrote to memory of 576	1668	37A8EE92838E77CF667250CEDD0CECF8.exe	31
PID 1668 wrote to memory of 576	1668	37A8EE92838E77CF667250CEDD0CECF8.exe	31
PID 1668 wrote to memory of 576	1668	37A8EE92838E77CF667250CEDD0CECF8.exe	31
PID 1696 wrote to memory of 528	1696	ss.exe	32
PID 1696 wrote to memory of 528	1696	ss.exe	32
PID 1696 wrote to memory of 528	1696	ss.exe	32
PID 1696 wrote to memory of 528	1696	ss.exe	32
PID 576 wrote to memory of 936	576	windowsdefender.exe	34
PID 576 wrote to memory of 936	576	windowsdefender.exe	34
PID 576 wrote to memory of 936	576	windowsdefender.exe	34
PID 936 wrote to memory of 904	936	midia.exe	35
PID 936 wrote to memory of 904	936	midia.exe	35
PID 936 wrote to memory of 904	936	midia.exe	35

C:\Users\Admin\AppData\Local\Temp\37A8EE92838E77CF667250CEDD0CECF8.exe
"C:\Users\Admin\AppData\Local\Temp\37A8EE92838E77CF667250CEDD0CECF8.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1668
- C:\Users\Admin\AppData\Local\Temp\Server.exe
  "C:\Users\Admin\AppData\Local\Temp\Server.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1968
- - C:\Users\Admin\AppData\Local\Temp\ss.exe
    "C:\Users\Admin\AppData\Local\Temp\ss.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1696
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\ss.exe" "ss.exe" ENABLE
      4⤵
      PID:528
- C:\Users\Admin\AppData\Local\Temp\windowsdefender.exe
  "C:\Users\Admin\AppData\Local\Temp\windowsdefender.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:576
- - C:\Users\Admin\AppData\Roaming\midia.exe
    "C:\Users\Admin\AppData\Roaming\midia.exe"
    3⤵
    - Executes dropped EXE
    - Drops startup file
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:936
  - - C:\Windows\system32\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\midia.exe" "midia.exe" ENABLE
      4⤵
      PID:904

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/576-78-0x00000000003F0000-0x00000000003F2000-memory.dmp

Filesize
8KB

Download
memory/576-75-0x0000000001290000-0x0000000001291000-memory.dmp

Filesize
4KB

Download
memory/576-77-0x00000000003D0000-0x00000000003D6000-memory.dmp

Filesize
24KB

Download
memory/904-89-0x000007FEFC221000-0x000007FEFC223000-memory.dmp

Filesize
8KB

Download
memory/936-84-0x0000000000F60000-0x0000000000F61000-memory.dmp

Filesize
4KB

Download
memory/936-87-0x0000000000460000-0x0000000000462000-memory.dmp

Filesize
8KB

Download
memory/1668-64-0x0000000000960000-0x0000000000962000-memory.dmp

Filesize
8KB

Download
memory/1696-71-0x0000000000B40000-0x0000000000B41000-memory.dmp

Filesize
4KB

Download
memory/1968-63-0x00000000768B1000-0x00000000768B3000-memory.dmp

Filesize
8KB

Download
memory/1968-65-0x00000000004D0000-0x00000000004D1000-memory.dmp

Filesize
4KB

Download