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Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    12/06/2024, 07:45

General

  • Target

    Device/HarddiskVolume3/Users/tomphilip/AppData/Local/Temp/NER86D7.tmp/Toolbar.exe

  • Size

    472KB

  • MD5

    0f53d59df42827e7af4fc207e600a999

  • SHA1

    bee96291323d129cf104d0fa8ecbe8aab5e4bca5

  • SHA256

    784ad117dc1cd965a561ee729f086049fe47694aa3545ea6408d2ff31917827f

  • SHA512

    1cc407b30c60b7ba865daa2036573c8c205b3710de86a8921c0c47b8e9889bd0d97512ab31160fdeb68220ff8a742fccb3230b74ca65f97c5b019acac8708cfe

  • SSDEEP

    12288:vTOAkRj7IqoRHaxYmzzxrFdLh/20lRSgi:v6AkRjyaxYmdxdLxt

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 8 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in Program Files directory 4 IoCs
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume3\Users\tomphilip\AppData\Local\Temp\NER86D7.tmp\Toolbar.exe
    "C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume3\Users\tomphilip\AppData\Local\Temp\NER86D7.tmp\Toolbar.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2276
    • C:\Users\Admin\AppData\Local\Temp\bar.0\A5SETUP.EXE
      "C:\Users\Admin\AppData\Local\Temp\bar.0\A5SETUP.EXE" "C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume3\Users\tomphilip\AppData\Local\Temp\NER86D7.tmp\Toolbar.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Drops file in Program Files directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      PID:2300
    • C:\Users\Admin\AppData\Local\Temp\bar.0\A5SRCSP.EXE
      "C:\Users\Admin\AppData\Local\Temp\bar.0\A5SRCSP.EXE" "C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume3\Users\tomphilip\AppData\Local\Temp\NER86D7.tmp\Toolbar.exe"
      2⤵
      • Executes dropped EXE
      PID:2508

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Program Files (x86)\AskTBar\bar\1.bin\A5POPSWT.DLL

    Filesize

    116KB

    MD5

    69a3eb924678bb23047e6248648e6534

    SHA1

    844949940edfa51d38c5fa3294892b92c8d3cf8e

    SHA256

    8150669b6e743bdc725abfd4e51c3da721e4b1a2a86ee2cda4d61f8e2bbee851

    SHA512

    6f3c3b4a81965a6cf462943f1c0b0c8db1fbe7b89e24459411dc279cb18d534568c2cf0097bfea6848ceca9818bf10f86c1ea4aaf601f1b1e42dbd9ec696dd06

  • \Program Files (x86)\AskTBar\bar\1.bin\ASKTBAR.DLL

    Filesize

    240KB

    MD5

    59dbfe16aa20144cb11e7fc8b2d21eaa

    SHA1

    b4403810c1db8482c5a26b418499a8643e4a6410

    SHA256

    809bbfa3fb67c79f1901b159b754dd955c5defe28d5879f91972d269d706d55c

    SHA512

    83ce6c1631d36ebc19be3fc178932f41fdef7c7f8a9dd5d3631527a25f894936477a053ad96d65ba58b8775732741b52af1edc390b260009775406b05df36297

  • \Users\Admin\AppData\Local\Temp\bar.0\A5SETUP.EXE

    Filesize

    376KB

    MD5

    f90f8e211bb2ba49218188caa1dc2f3a

    SHA1

    8a18eb5ec6f37f9c4f0654069815f30f651b1d8c

    SHA256

    024fe6f1d33edbdb2a9064564273db5e4e2bf87fa6b6380b8a118a7b110b7035

    SHA512

    107889d1a470a4a622a3a09ee39077d12a444c6bb90e2897e56720c722db8e926f0853bc5cbc435d211105335ea0db1d334f8811c2c6d5ad63b7072742eb4f7e

  • \Users\Admin\AppData\Local\Temp\bar.0\A5SRCSP.EXE

    Filesize

    76KB

    MD5

    e7d9ce28eae7d5ce00878a39a7d2584f

    SHA1

    73b4be59997f90e3bb3e87df47efe76b10fa6a92

    SHA256

    87f40724067f8e3bfbb2d78962f9925ec77b83fb7763513387a016b6b1683439

    SHA512

    c7bffecd908007e2b53e83f444e3a685f525c022f12d8e2e3733a47f64c00e2165737450ccca4d86738c79d2104cf3ed6652803eb8fd78f36a2a26423600acd5