Analysis

  • max time kernel
    147s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-12-2023 08:15

General

  • Target

    Syences.exe

  • Size

    3.1MB

  • MD5

    f0207a4a17b47cba7d87142363b12477

  • SHA1

    c2203e69e92e6ba6394e6f711429fadf8b65845e

  • SHA256

    d2835aa9243d529d8d44846d383f97f1bb7b976bc4c378d29d2387d1ba6c1d09

  • SHA512

    35f37bb38a070220dbe9f6511ab5bf8bca07fae46b5edefa5356a9294fc98b97735719410887b40776a7232711620f5c92f6bb45a7a54d597faef675196da810

  • SSDEEP

    49152:Kvpt62XlaSFNWPjljiFa2RoUYIAunRJ65bR3LoGdcTHHB72eh2NT:Kvj62XlaSFNWPjljiFXRoUYIAunRJ67

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

127.0.0.1:4782

Mutex

4b2195e4-fb92-4868-914b-7332837f4388

Attributes
  • encryption_key

    26FFD71DADD23C1D90404D858942E1C47093C7CF

  • install_name

    Synecs.exe

  • log_directory

    pergs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Syences.exe
    "C:\Users\Admin\AppData\Local\Temp\Syences.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2804
    • C:\Users\Admin\AppData\Roaming\SubDir\Synecs.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\Synecs.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2300

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\SubDir\Synecs.exe

    Filesize

    1.9MB

    MD5

    f6e7f94b768e105a8f9ad2360b51b658

    SHA1

    a0e121e1747a8623010ca53ee5cc5fb31f61420c

    SHA256

    46f40e435e6c00c0b355a8fdc711a20cbb8998c48221a038fe818745246c1e8a

    SHA512

    c23656a9e954800a1fa0629e13ea6b62d4336cc17d5754b0401344a24eb6f105b745ded3fa65a9f7c6ca144cc43c807a59bd2a1c052adeecae811a1003932e4d

  • C:\Users\Admin\AppData\Roaming\SubDir\Synecs.exe

    Filesize

    1.2MB

    MD5

    523ebf55bb54cad7f0c3b4eacfcd8b22

    SHA1

    73ea23668211e458f724aebc555ec239e8a79d94

    SHA256

    c7a497234ef3234ff24926a4a5100a6bf4ecc535d07929c797f3f00a3283c73c

    SHA512

    109c3d758f9e8cef2599b8e4b6a8bc6f0574dcda4e8a204364effe85d381a2eae4626e00296ea7946395d3f0ad07b57b7bf8dbd032a0779d5a3bd6911e533636

  • memory/2300-8-0x00007FFE7E760000-0x00007FFE7F221000-memory.dmp

    Filesize

    10.8MB

  • memory/2300-9-0x00000000019C0000-0x00000000019D0000-memory.dmp

    Filesize

    64KB

  • memory/2300-11-0x000000001BBC0000-0x000000001BC10000-memory.dmp

    Filesize

    320KB

  • memory/2300-12-0x000000001C2E0000-0x000000001C392000-memory.dmp

    Filesize

    712KB

  • memory/2300-13-0x00007FFE7E760000-0x00007FFE7F221000-memory.dmp

    Filesize

    10.8MB

  • memory/2300-14-0x00000000019C0000-0x00000000019D0000-memory.dmp

    Filesize

    64KB

  • memory/2804-0-0x0000000000530000-0x0000000000856000-memory.dmp

    Filesize

    3.1MB

  • memory/2804-2-0x000000001B310000-0x000000001B320000-memory.dmp

    Filesize

    64KB

  • memory/2804-1-0x00007FFE7E760000-0x00007FFE7F221000-memory.dmp

    Filesize

    10.8MB

  • memory/2804-10-0x00007FFE7E760000-0x00007FFE7F221000-memory.dmp

    Filesize

    10.8MB