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Analysis

  • max time kernel
    148s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/02/2024, 02:17

General

  • Target

    983aa7e3a64a30fd99e86256621ff73b.exe

  • Size

    30KB

  • MD5

    983aa7e3a64a30fd99e86256621ff73b

  • SHA1

    48f5c5b8d84be0e0a4419e0fce28bf608106ba1e

  • SHA256

    c6480c74c34abc54c38d99ef959693728439be2f5861276e8021b55b260624fc

  • SHA512

    9a48208c48975bfd06f307ec52fa8b569ba53494a87b056d5527f8fab4d93d826f2b9cc60c92b75bafaa72cc265fd2361cc99cdff8b2d97e76abad5d68d1e10b

  • SSDEEP

    768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFua:SKcR4mjD9r823Fua

Malware Config

Signatures

  • Executes dropped EXE 1 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 6 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\983aa7e3a64a30fd99e86256621ff73b.exe
    "C:\Users\Admin\AppData\Local\Temp\983aa7e3a64a30fd99e86256621ff73b.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4876
    • 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:4472

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

    39b3f21284e6a9c9473de7b0eff7941e

    SHA1

    a6569b7dd06e9b44b0d216a1ed282472dc69bc3b

    SHA256

    4fc2036c6056a7b7b3ce0b58abe2c353c6255380ebe8ec8a950ded144a613a8c

    SHA512

    28255e9a87ebd6bbbcbce361cc4887995cddcfb2f1891dad5554c97706bd86154baa7a4f061d436b7e88a14545f0d7dd11f79692481be4a9fbed9a5c6a2ed075

  • C:\Users\Admin\AppData\Local\Temp\pBJqkwwtYPX2hia.exe

    Filesize

    942B

    MD5

    8c9eabd80e5faef315faf3ee956f9ace

    SHA1

    b6ef9b3abfdaf613c3b20a1af803f2f9b9656816

    SHA256

    56fb55c099a5f8b3f230f7492a906daf56fa5cad86716ac32c4e87338410a1db

    SHA512

    8569bb2b2b7999274cab2c89d2fc10d9e76dad1f7802a203cf29fd09f1827a2dbdcbef39f8240ecfaebee6370da9a2edc23d2cc146916088743faa0c60e9e0ec

  • C:\Windows\CTS.exe

    Filesize

    29KB

    MD5

    70aa23c9229741a9b52e5ce388a883ac

    SHA1

    b42683e21e13de3f71db26635954d992ebe7119e

    SHA256

    9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

    SHA512

    be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

  • memory/4472-7-0x00000000002A0000-0x00000000002B7000-memory.dmp

    Filesize

    92KB

  • memory/4472-31-0x00000000002A0000-0x00000000002B7000-memory.dmp

    Filesize

    92KB

  • memory/4876-0-0x0000000000760000-0x0000000000777000-memory.dmp

    Filesize

    92KB

  • memory/4876-9-0x0000000000760000-0x0000000000777000-memory.dmp

    Filesize

    92KB