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Analysis

  • max time kernel
    140s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    21/05/2024, 04:31

General

  • Target

    d385358cdcdc02a55682f4c3bbb9054784672c161f28ea7e7415b771dffa2265.exe

  • Size

    27KB

  • MD5

    8a2229063faf7e0e7771817b21a8d605

  • SHA1

    0423780da80d35013f66c0c08af9d03bae7c6e94

  • SHA256

    d385358cdcdc02a55682f4c3bbb9054784672c161f28ea7e7415b771dffa2265

  • SHA512

    7db67aead1b32d759c75529984708d957b36c54d6c19107afbf39d1e18659f25c422931a08448cf431dcddfe5a6aff9f77ba6fd5dd15d65b1fcde3fe7f996e05

  • SSDEEP

    768:X9J/3FzjgfanEGx8V36unjv88tznuRU65Y4gpph1ePVCMy:N5VzcfA/6LrVpL74gfh16ny

Malware Config

Signatures

  • UPX dump on OEP (original entry point) 5 IoCs
  • 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 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d385358cdcdc02a55682f4c3bbb9054784672c161f28ea7e7415b771dffa2265.exe
    "C:\Users\Admin\AppData\Local\Temp\d385358cdcdc02a55682f4c3bbb9054784672c161f28ea7e7415b771dffa2265.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1728
    • 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:1628

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\xX6c95EcYjqOSSP.exe

    Filesize

    27KB

    MD5

    61165aa8f440a0556036bb4c70cd0c59

    SHA1

    52d7cc66872f6dd6b219c28f0898e2d28bf75c01

    SHA256

    8fc2ab376c2674c4ee6f64a796e952f257182836714f56732250e99935767ce1

    SHA512

    1f88f01aeac0528bdbda7e2ab6d8d28bd3cad6dee33e26d06e0c8aa4c6d81ca0bf3b758de581684a58b2bbfb3c086f93d6f1877b9ad92059081b6aeadda2f1c8

  • C:\Windows\CTS.exe

    Filesize

    27KB

    MD5

    a6749b968461644db5cc0ecceffb224a

    SHA1

    2795aa37b8586986a34437081351cdd791749a90

    SHA256

    720023737d7ff700818f55612ba069a609a5ddea646bb3509b615ee3523a4ca2

    SHA512

    2a276816290746ed914af9cf6427aef31ce9395b8e9937090e329a8f74fb84c62d15b196e13346caa086842b3f5f549b9eb20cbf422d18c9c1b63e6342ea90b4

  • memory/1628-14-0x00000000002E0000-0x00000000002F8000-memory.dmp

    Filesize

    96KB

  • memory/1728-0-0x0000000000E90000-0x0000000000EA8000-memory.dmp

    Filesize

    96KB

  • memory/1728-10-0x0000000000170000-0x0000000000188000-memory.dmp

    Filesize

    96KB

  • memory/1728-12-0x0000000000E90000-0x0000000000EA8000-memory.dmp

    Filesize

    96KB

  • memory/1728-8-0x0000000000170000-0x0000000000188000-memory.dmp

    Filesize

    96KB