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Analysis

  • max time kernel
    57s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    18/12/2022, 15:15

General

  • Target

    tmp.exe

  • Size

    652KB

  • MD5

    31549917cdc6e3f9d40a48ea5998493f

  • SHA1

    c0f7e826645b1ba2ba1fed866992beb9de7a31df

  • SHA256

    73f03b369e9df60c2dc97baefcdc4ba920da3a2126c873a4654e1a83510d3b87

  • SHA512

    709737c36ef4fe96e99dcac210854a760cbbcff7af428620a0a83f16a5db09af4dbe2b52ccd4cff08fe0d5d4e544ddd9474c7c45005938a32705960c3581dad1

  • SSDEEP

    12288:pC6wyk1nvfBP0FQoOd/566f81qjbravk7o3xLWAB8TMfo+aqwFtaif8dHOqPNspj:pC6wp1vfhboOb66Uyavk8hdo+g8BOONu

Malware Config

Signatures

  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies Internet Explorer settings 1 TTPs 9 IoCs
  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    1⤵
    • Writes to the Master Boot Record (MBR)
    • Modifies Internet Explorer settings
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:2044

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/2044-54-0x0000000075A91000-0x0000000075A93000-memory.dmp

    Filesize

    8KB

  • memory/2044-55-0x000000006CF90000-0x000000006CFA0000-memory.dmp

    Filesize

    64KB

  • memory/2044-56-0x0000000000400000-0x00000000005AC000-memory.dmp

    Filesize

    1.7MB

  • memory/2044-57-0x0000000001EF0000-0x0000000001EFA000-memory.dmp

    Filesize

    40KB

  • memory/2044-58-0x0000000001EF0000-0x0000000001EFA000-memory.dmp

    Filesize

    40KB

  • memory/2044-60-0x0000000000400000-0x00000000005AC000-memory.dmp

    Filesize

    1.7MB

  • memory/2044-61-0x0000000001EF0000-0x0000000001EFA000-memory.dmp

    Filesize

    40KB

  • memory/2044-62-0x0000000001EF0000-0x0000000001EFA000-memory.dmp

    Filesize

    40KB