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Analysis

  • max time kernel
    142s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/03/2024, 14:02

General

  • Target

    b24f3629767e95aa88e064dbe3480f9a.exe

  • Size

    52KB

  • MD5

    b24f3629767e95aa88e064dbe3480f9a

  • SHA1

    6d3670b669317a1b8b1e1ac55f86f1526a9424c8

  • SHA256

    e920922b09518fb34a15c2dcb673c66a1034de0463f5400270da6dfeab381202

  • SHA512

    5bf398fa9f96a756befc1a2faf60e2a7c1888410d6e9fe6ad7467b63d4b231d03bcfb93e101cba6e0762799aa6770a4993edd32dd5260d450dbf92fb7bd45103

  • SSDEEP

    768:X8Q2ZDX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIom46+IsRF9fFoFict+kRaXP:s9Z3KcR4mjD9r8226+3RFFFoFNtD78kq

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b24f3629767e95aa88e064dbe3480f9a.exe
    "C:\Users\Admin\AppData\Local\Temp\b24f3629767e95aa88e064dbe3480f9a.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3192
    • C:\Users\Admin\AppData\Local\Temp\TopkhXiSrLju4Jw.exe
      C:\Users\Admin\AppData\Local\Temp\TopkhXiSrLju4Jw.exe
      2⤵
      • Executes dropped EXE
      PID:5060
    • C:\Windows\CTS.exe
      "C:\Windows\CTS.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:1800
  • 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=4392 --field-trial-handle=2972,i,4036376905309803364,5412922217215781933,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1212

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

      Filesize

      358KB

      MD5

      c6bb5f16e2c24d0f96a2956f58f80148

      SHA1

      65d07c3ab62a91bb6be36f7fd7b9ecff8bac596d

      SHA256

      bb3f5b1d532db732912109070d8208ecaeff1a0dce59a16cf2015df20bb25071

      SHA512

      f8b5a3eac7570a842d67d2ea01e12c2ab5dd12bda0f68816df1e4c805efdd212b83beec071febce6493dec22a29e7262a50ec86243bea411bcc23bb2e8b522b0

    • C:\Users\Admin\AppData\Local\Temp\TopkhXiSrLju4Jw.exe

      Filesize

      16KB

      MD5

      95c9a037d3b01a21275aa6cc73b122a2

      SHA1

      c19ed8afc95b91d0cc6bc075047de30eae015386

      SHA256

      1d5edcbae3258efb07cc57ba8d7cd1ebe2eb5106ef1a894b787ed2857952c523

      SHA512

      761bb76261712a597f610e3162fa1514d2f56d69d03d1b76b51c6b2a7b0c88bbd385b7dc849c6913f7d861fb3aed8551f26f640d90b621e8629abe2e4bfb6160

    • C:\Windows\CTS.exe

      Filesize

      35KB

      MD5

      93e5f18caebd8d4a2c893e40e5f38232

      SHA1

      fd55c4e6bcd108bce60ea719c06dc9c4d0adafa6

      SHA256

      a66c4b98becac2f69cb107cd087d7a2ca9ef511bc3b83367b1f440f11dd159a8

      SHA512

      986583610d27caae2080834301d072557c5d2c85e33f0d19ab1245d7eae8db146397461572ddb3d491be16f3af210720d54267dac838fdad8fe34afa3d6b7f54

    • memory/1800-9-0x00000000001C0000-0x00000000001D7000-memory.dmp

      Filesize

      92KB

    • memory/3192-0-0x00000000002A0000-0x00000000002B7000-memory.dmp

      Filesize

      92KB

    • memory/3192-8-0x00000000002A0000-0x00000000002B7000-memory.dmp

      Filesize

      92KB