Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    27-12-2023 04:47

General

  • Target

    a3ff56835b4bd0e80f6e95fbfc741a8e.exe

  • Size

    104KB

  • MD5

    a3ff56835b4bd0e80f6e95fbfc741a8e

  • SHA1

    8af2b8e66107890df87a3c6ee9a5712228f95d8a

  • SHA256

    ee9fd41093ef9d4e21a78ab987df6ad42a6fa5dcea7ebd9c5ff1e1f388720d8e

  • SHA512

    1dbc80bccb87b4f1330a783fb4c2c7840cec6d9c280c261c8df2d8bdd4188ca1e779665f00cb35440660f70e95a06f178387aa113803ef0581dd2d658694107b

  • SSDEEP

    1536:+eS3Yzxx6ZTD9Um9UoCONGAho+nuzGHRbVV3jEbgkxpPNOf5uze3S:+eS3Yzxx6R63ahJn9RStUYzeC

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

system

C2

4.tcp.ngrok.io:14964

Mutex

Windows Update

Attributes
  • reg_key

    Windows Update

  • splitter

    |Hassan|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a3ff56835b4bd0e80f6e95fbfc741a8e.exe
    "C:\Users\Admin\AppData\Local\Temp\a3ff56835b4bd0e80f6e95fbfc741a8e.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:848
    • C:\Users\Admin\AppData\Local\Temp\a3ff56835b4bd0e80f6e95fbfc741a8e.exe
      "C:\Users\Admin\AppData\Local\Temp\a3ff56835b4bd0e80f6e95fbfc741a8e.exe"
      2⤵
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:2444

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Command and Control

Web Service

1
T1102

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/848-0-0x00000000011C0000-0x00000000011E0000-memory.dmp
    Filesize

    128KB

  • memory/848-1-0x0000000074B90000-0x000000007527E000-memory.dmp
    Filesize

    6.9MB

  • memory/848-2-0x00000000049E0000-0x0000000004A20000-memory.dmp
    Filesize

    256KB

  • memory/848-4-0x0000000000430000-0x000000000043A000-memory.dmp
    Filesize

    40KB

  • memory/848-13-0x0000000074B90000-0x000000007527E000-memory.dmp
    Filesize

    6.9MB

  • memory/2444-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/2444-7-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/2444-8-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/2444-6-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/2444-11-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/2444-5-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/2444-14-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/2444-16-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/2444-17-0x00000000744A0000-0x0000000074B8E000-memory.dmp
    Filesize

    6.9MB

  • memory/2444-18-0x0000000005040000-0x0000000005080000-memory.dmp
    Filesize

    256KB

  • memory/2444-19-0x00000000744A0000-0x0000000074B8E000-memory.dmp
    Filesize

    6.9MB

  • memory/2444-20-0x0000000005040000-0x0000000005080000-memory.dmp
    Filesize

    256KB