Resubmissions

14-07-2022 15:43

220714-s55nsacbd4 10

17-06-2022 01:34

220617-by4dpscea6 10

Analysis

  • max time kernel
    143s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    14-07-2022 15:43

General

  • Target

    SecuriteInfo.com.Variant.Symmi.62789.30802.exe

  • Size

    1.1MB

  • MD5

    88b1e9514adcdc4941f53ac88aa7db69

  • SHA1

    f53bc85c538a7ac70ab66c6f9598e8f3fd003d38

  • SHA256

    6d0cf17f8f261b8c65feef7b2dbec93ceac870ca0daf6f400625c89744a4f710

  • SHA512

    0636e75ad959a39da231cf416070f9541f9a04cec740937c21a5981d2ff7b3cbb090f78e792a819c18608e8acaf98310e02dfefe36269b2b956a779f03021853

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Symmi.62789.30802.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Symmi.62789.30802.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:888
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c C:\Users\Admin\AppData\Local\Temp\877976.bmp
      2⤵
      • Checks computer location settings
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:2248
      • C:\Windows\SysWOW64\mspaint.exe
        "C:\Windows\system32\mspaint.exe" "C:\Users\Admin\AppData\Local\Temp\877976.bmp"
        3⤵
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        PID:3988
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DeviceAssociationService
    1⤵
      PID:3472

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2248-132-0x0000000000000000-mapping.dmp
    • memory/3988-133-0x0000000000000000-mapping.dmp