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Analysis

  • max time kernel
    147s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/12/2023, 13:50

General

  • Target

    38b30e46b383413eea7cafd9a87b3e9a.exe

  • Size

    29KB

  • MD5

    38b30e46b383413eea7cafd9a87b3e9a

  • SHA1

    3b1e44bbaf087db7dd35162b2d58a0f8d91b377b

  • SHA256

    9db75c3e599c1f73c42a5b0eeb3bdcf27be8e55da0cdf2d1fddcacc79bdf2756

  • SHA512

    9f5d0d2b9afe3a097f2c6379833cb12e758dea19bc5994fe0f3162e61792fc3a64da1bf7328cd299a64bdd237d744fb7962657f7be89c3ad5e9939dce162ce96

  • SSDEEP

    768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFF:SKcR4mjD9r823FF

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 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\38b30e46b383413eea7cafd9a87b3e9a.exe
    "C:\Users\Admin\AppData\Local\Temp\38b30e46b383413eea7cafd9a87b3e9a.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5052
    • 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:4412

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\CTS.exe

    Filesize

    29KB

    MD5

    70aa23c9229741a9b52e5ce388a883ac

    SHA1

    b42683e21e13de3f71db26635954d992ebe7119e

    SHA256

    9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

    SHA512

    be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

  • memory/4412-9-0x0000000000490000-0x00000000004A7000-memory.dmp

    Filesize

    92KB

  • memory/4412-33-0x0000000000490000-0x00000000004A7000-memory.dmp

    Filesize

    92KB

  • memory/5052-0-0x00000000003A0000-0x00000000003B7000-memory.dmp

    Filesize

    92KB

  • memory/5052-7-0x00000000003A0000-0x00000000003B7000-memory.dmp

    Filesize

    92KB