Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-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: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 38 IoCs
  • Suspicious use of WriteProcessMemory 11 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 behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3652
    • 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:3660
    • C:\Users\Admin\AppData\Local\Temp\a3ff56835b4bd0e80f6e95fbfc741a8e.exe
      "C:\Users\Admin\AppData\Local\Temp\a3ff56835b4bd0e80f6e95fbfc741a8e.exe"
      2⤵
        PID:1120

    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

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\a3ff56835b4bd0e80f6e95fbfc741a8e.exe.log
      Filesize

      507B

      MD5

      8cf94b5356be60247d331660005941ec

      SHA1

      fdedb361f40f22cb6a086c808fc0056d4e421131

      SHA256

      52a5b2d36f2b72cb02c695cf7ef46444dda73d4ea82a73e0894c805fa9987bc0

      SHA512

      b886dfc8bf03f8627f051fb6e2ac40ae2e7713584695a365728eb2e2c87217830029aa35bd129c642fa03dde3f7a7dd5690b16248676be60a6bb5f497fb23651

    • memory/3652-4-0x00000000051D0000-0x0000000005262000-memory.dmp
      Filesize

      584KB

    • memory/3652-2-0x0000000005100000-0x0000000005110000-memory.dmp
      Filesize

      64KB

    • memory/3652-0-0x0000000000710000-0x0000000000730000-memory.dmp
      Filesize

      128KB

    • memory/3652-5-0x0000000005270000-0x000000000530C000-memory.dmp
      Filesize

      624KB

    • memory/3652-7-0x00000000050D0000-0x00000000050DA000-memory.dmp
      Filesize

      40KB

    • memory/3652-16-0x00000000751C0000-0x0000000075970000-memory.dmp
      Filesize

      7.7MB

    • memory/3652-3-0x0000000005780000-0x0000000005D24000-memory.dmp
      Filesize

      5.6MB

    • memory/3652-1-0x00000000751C0000-0x0000000075970000-memory.dmp
      Filesize

      7.7MB

    • memory/3660-8-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB

    • memory/3660-11-0x00000000751C0000-0x0000000075970000-memory.dmp
      Filesize

      7.7MB

    • memory/3660-13-0x00000000055A0000-0x00000000055AA000-memory.dmp
      Filesize

      40KB

    • memory/3660-14-0x0000000005910000-0x0000000005976000-memory.dmp
      Filesize

      408KB

    • memory/3660-15-0x0000000006930000-0x0000000006948000-memory.dmp
      Filesize

      96KB

    • memory/3660-12-0x00000000055C0000-0x00000000055D0000-memory.dmp
      Filesize

      64KB

    • memory/3660-17-0x00000000751C0000-0x0000000075970000-memory.dmp
      Filesize

      7.7MB

    • memory/3660-18-0x00000000055C0000-0x00000000055D0000-memory.dmp
      Filesize

      64KB