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Analysis

  • max time kernel
    141s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/01/2024, 20:27

General

  • Target

    75706464b91635ce44a02c121de61c3d.exe

  • Size

    46KB

  • MD5

    75706464b91635ce44a02c121de61c3d

  • SHA1

    23d5fdfe8f0ccbcbc37654b5677ae12d409bfd5e

  • SHA256

    a406b3a2ef6709e23aa0c124935dac8c089d980f17d8b1fd83e4f4e9ccab7950

  • SHA512

    891397de1d697f2f4aa6f04de330b07f1e8ef836040d6b707ad9d6a6954db4b9163ba59dc559b2312ecb9becafe84f89768662d0ba8dfa3d2717057e98467e0c

  • SSDEEP

    768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFjFPEmpoCl0ziyHcDq2L:SKcR4mjD9r823FemKCmiy8Dq2gZhs

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\75706464b91635ce44a02c121de61c3d.exe
    "C:\Users\Admin\AppData\Local\Temp\75706464b91635ce44a02c121de61c3d.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1660
    • C:\Users\Admin\AppData\Local\Temp\xYZO9Hmb2EMiKCK.exe
      C:\Users\Admin\AppData\Local\Temp\xYZO9Hmb2EMiKCK.exe
      2⤵
      • Executes dropped EXE
      PID:3428
    • 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:4812

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    352KB

    MD5

    2fa3999ac1b0154e2fd68a12721b5172

    SHA1

    a907c170efd1dff8efa7e1394b35b75b686f9680

    SHA256

    285bdf3971521310abd38e4c7ae75802ff94c3da7137f3ee02c24a6623c8641d

    SHA512

    c2f5ac490d146d39130a1e0a3802d28fd58ec2aadb8badcbed464d7cf444c11acc559bfc2629ec2528ce04cfe05071957fb635fd7be8e5b8d4bb7d8ee0338400

  • C:\Users\Admin\AppData\Local\Temp\xYZO9Hmb2EMiKCK.exe

    Filesize

    16KB

    MD5

    95c9a037d3b01a21275aa6cc73b122a2

    SHA1

    c19ed8afc95b91d0cc6bc075047de30eae015386

    SHA256

    1d5edcbae3258efb07cc57ba8d7cd1ebe2eb5106ef1a894b787ed2857952c523

    SHA512

    761bb76261712a597f610e3162fa1514d2f56d69d03d1b76b51c6b2a7b0c88bbd385b7dc849c6913f7d861fb3aed8551f26f640d90b621e8629abe2e4bfb6160

  • C:\Windows\CTS.exe

    Filesize

    29KB

    MD5

    70aa23c9229741a9b52e5ce388a883ac

    SHA1

    b42683e21e13de3f71db26635954d992ebe7119e

    SHA256

    9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

    SHA512

    be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

  • memory/1660-0-0x0000000000590000-0x00000000005A7000-memory.dmp

    Filesize

    92KB

  • memory/1660-7-0x0000000000590000-0x00000000005A7000-memory.dmp

    Filesize

    92KB

  • memory/4812-9-0x0000000000560000-0x0000000000577000-memory.dmp

    Filesize

    92KB