Analysis

  • max time kernel
    150s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-03-2024 21:41

General

  • Target

    stub.exe

  • Size

    3.8MB

  • MD5

    4443b57c1262fbc156765ba2a9019391

  • SHA1

    b02b8b4c0ee1f8b850e420d754ef1f398c1ebf4d

  • SHA256

    f6631cb0b90dad50436e54e1626d6684bb4188a451dd1168e72df5ca67583af7

  • SHA512

    84e4854c82c5fbd789ce1973b73d60aef138cee9b492a693a8a9d49a24488cdc719d54a8434fdc4b8e7057be33126e09aae2f04a88d9bfbb7abb9264aa0d596d

  • SSDEEP

    98304:d77Pmq33rE/JDLPWZADUGer7B6iY74M/emlwXVZ4FB:5+R/eZADUXR

Malware Config

Extracted

Family

bitrat

Version

1.38

C2

103.153.182.247:6161

Attributes
  • communication_password

    81dc9bdb52d04dc20036dbd8313ed055

  • install_dir

    Install path

  • install_file

    Install name

  • tor_process

    tor

Signatures

  • BitRAT

    BitRAT is a remote access tool written in C++ and uses leaked source code from other families.

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
  • Suspicious behavior: RenamesItself 30 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\stub.exe
    "C:\Users\Admin\AppData\Local\Temp\stub.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: RenamesItself
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:1936
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1400 --field-trial-handle=2432,i,12161922670941700748,3348345705955601576,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1456

    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

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1936-0-0x0000000000400000-0x00000000007CE000-memory.dmp
      Filesize

      3.8MB

    • memory/1936-1-0x0000000074EC0000-0x0000000074EF9000-memory.dmp
      Filesize

      228KB

    • memory/1936-2-0x0000000074B80000-0x0000000074BB9000-memory.dmp
      Filesize

      228KB

    • memory/1936-3-0x0000000074B80000-0x0000000074BB9000-memory.dmp
      Filesize

      228KB

    • memory/1936-4-0x0000000074B80000-0x0000000074BB9000-memory.dmp
      Filesize

      228KB

    • memory/1936-5-0x0000000074B80000-0x0000000074BB9000-memory.dmp
      Filesize

      228KB

    • memory/1936-6-0x0000000074B80000-0x0000000074BB9000-memory.dmp
      Filesize

      228KB