Overview

overview

10

Static

static

10

ff91001ef2...66.exe

windows7-x64

9

ff91001ef2...66.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    159s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-03-2024 01:00

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General

  • Target

    ff91001ef2853c17052d86b1d0f9469086e7bf7ef28f4bb4a39042ab42d8c966.exe

  • Size

    2.0MB

  • MD5

    352f1cf7fce68112687c09346bf100d5

  • SHA1

    6c113f3977f132bf7e932fb706db2ff2859de5e1

  • SHA256

    ff91001ef2853c17052d86b1d0f9469086e7bf7ef28f4bb4a39042ab42d8c966

  • SHA512

    de2b1cf91d6f5d6b58ff47bb2b2f518228c6999bee021fa60f8676e29d4e0a1b8d73aa865aea9759730acf003edeff0aaf9281945bc530636d3eb52356779e0f

  • SSDEEP

    49152:BO0umU+9cxGHBJ+hvueIDpMXkLMU0XqcWTeLEY:VumUGcx0WvqDB4U0Xqc8wEY

Score
9/10
persistencespywarestealer

Malware Config

Signatures

  • Detects executables containing possible sandbox analysis VM usernames 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 12 IoCs
  • Drops file in Program Files directory 18 IoCs
  • Drops file in Windows directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ff91001ef2853c17052d86b1d0f9469086e7bf7ef28f4bb4a39042ab42d8c966.exe
    "C:\Users\Admin\AppData\Local\Temp\ff91001ef2853c17052d86b1d0f9469086e7bf7ef28f4bb4a39042ab42d8c966.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1720
    • C:\Users\Admin\AppData\Local\Temp\ff91001ef2853c17052d86b1d0f9469086e7bf7ef28f4bb4a39042ab42d8c966.exe
      "C:\Users\Admin\AppData\Local\Temp\ff91001ef2853c17052d86b1d0f9469086e7bf7ef28f4bb4a39042ab42d8c966.exe"
      2⤵
      • Checks computer location settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5080
      • C:\Users\Admin\AppData\Local\Temp\ff91001ef2853c17052d86b1d0f9469086e7bf7ef28f4bb4a39042ab42d8c966.exe
        "C:\Users\Admin\AppData\Local\Temp\ff91001ef2853c17052d86b1d0f9469086e7bf7ef28f4bb4a39042ab42d8c966.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2992
    • C:\Users\Admin\AppData\Local\Temp\ff91001ef2853c17052d86b1d0f9469086e7bf7ef28f4bb4a39042ab42d8c966.exe
      "C:\Users\Admin\AppData\Local\Temp\ff91001ef2853c17052d86b1d0f9469086e7bf7ef28f4bb4a39042ab42d8c966.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:4708
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1720 -s 1200
      2⤵
      • Program crash
      PID:4928
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1720 -ip 1720
    1⤵
      PID:3156

    Network

    MITRE ATT&CK Enterprise v15

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    Downloads

    • C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\beast uncut legs traffic (Sarah).zip.exe
      Filesize

      355KB

      MD5

      f6382305f2c94bce220366191ec4f8c5

      SHA1

      09f9c4dbd59dd02747bbd24c2c4b2bea4b1a9120

      SHA256

      607196f722d461884d18273a53667da0268997609b28fee132b6a82e6431d5bf

      SHA512

      a25bc5f252069717aad26b676468cd8cec7b97238a2aa6fd046506984b2185748149da84fafdeee69df65029596dc615aee5a5829e855a1415f0b1dd16d10972

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