Analysis

  • max time kernel
    149s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-11-2022 17:08

General

  • Target

    f15fb297fe10b72d5ffb922cdc6763294d159d4738b560a16412202637553dec.exe

  • Size

    492KB

  • MD5

    87684be9142decfc12aa4d596a930d04

  • SHA1

    f55050ac6bbee10762fe3a9895da6424ea52b0a5

  • SHA256

    f15fb297fe10b72d5ffb922cdc6763294d159d4738b560a16412202637553dec

  • SHA512

    2fd74f2e0ec9b7eccace85f35736b9359aec2607e7fd100a488b83fac5c4516dbf91de98fefbc5b9150ffdb876540e0e2bcb22c7ebbd91b31cd1dd794903e931

  • SSDEEP

    6144:3O1cMQw34hlljnJawGWtVaoi42UkBSSDER0u+GIIIIIIIhIIIIIIIIIIIIIIIU8:e2mTIt642d9gm58

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f15fb297fe10b72d5ffb922cdc6763294d159d4738b560a16412202637553dec.exe
    "C:\Users\Admin\AppData\Local\Temp\f15fb297fe10b72d5ffb922cdc6763294d159d4738b560a16412202637553dec.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2620
    • C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe
      "C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:880

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe

    Filesize

    492KB

    MD5

    87684be9142decfc12aa4d596a930d04

    SHA1

    f55050ac6bbee10762fe3a9895da6424ea52b0a5

    SHA256

    f15fb297fe10b72d5ffb922cdc6763294d159d4738b560a16412202637553dec

    SHA512

    2fd74f2e0ec9b7eccace85f35736b9359aec2607e7fd100a488b83fac5c4516dbf91de98fefbc5b9150ffdb876540e0e2bcb22c7ebbd91b31cd1dd794903e931

  • C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe

    Filesize

    492KB

    MD5

    87684be9142decfc12aa4d596a930d04

    SHA1

    f55050ac6bbee10762fe3a9895da6424ea52b0a5

    SHA256

    f15fb297fe10b72d5ffb922cdc6763294d159d4738b560a16412202637553dec

    SHA512

    2fd74f2e0ec9b7eccace85f35736b9359aec2607e7fd100a488b83fac5c4516dbf91de98fefbc5b9150ffdb876540e0e2bcb22c7ebbd91b31cd1dd794903e931

  • memory/880-134-0x0000000000000000-mapping.dmp

  • memory/880-138-0x00007FFE4F090000-0x00007FFE4FB51000-memory.dmp

    Filesize

    10.8MB

  • memory/880-139-0x00007FFE4F090000-0x00007FFE4FB51000-memory.dmp

    Filesize

    10.8MB

  • memory/2620-132-0x0000000000F90000-0x0000000001010000-memory.dmp

    Filesize

    512KB

  • memory/2620-133-0x00007FFE4F090000-0x00007FFE4FB51000-memory.dmp

    Filesize

    10.8MB

  • memory/2620-137-0x00007FFE4F090000-0x00007FFE4FB51000-memory.dmp

    Filesize

    10.8MB