Overview

overview

10

Static

static

6beb38b239...19.exe

windows7-x64

10

6beb38b239...19.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    140s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-10-2022 19:25

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General

  • Target

    6beb38b23964322e9fcc881ef51e7819.exe

  • Size

    408KB

  • MD5

    6beb38b23964322e9fcc881ef51e7819

  • SHA1

    71277568877c51cbb7a741a21cf96fc2e18d9e18

  • SHA256

    85cfd8c4a34c7552ab58def454a0a286195f0522238406e4ab40e39724194c7a

  • SHA512

    93b9d0ef14d9bf0437936f1c83c3b028e767c9a95287e4d7eaf6d32d123e91cd47dbf15c9f6735378752c4523cba530ca949b7f3b780fe31007886bd612f77df

  • SSDEEP

    12288:4XgvmzFHi0mo5aH0qMzd58+7FksPJQPDHvd:4XgvOHi0mGaH0qSdlFkG4V

Score
10/10
evasionpersistencetrojan

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 3 IoCs
    persistence
  • UAC bypass 3 TTPs 12 IoCs
    evasiontrojan
  • Adds policy Run key to start application 2 TTPs 25 IoCs
    persistence
  • Disables RegEdit via registry modification 6 IoCs
    evasion
  • Executes dropped EXE 2 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 64 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 6 IoCs
    evasiontrojan
  • Looks up external IP address via web service 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • System policy modification 1 TTPs 39 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\6beb38b23964322e9fcc881ef51e7819.exe
    "C:\Users\Admin\AppData\Local\Temp\6beb38b23964322e9fcc881ef51e7819.exe"
    1⤵
    • Modifies WinLogon for persistence
    • UAC bypass
    • Adds policy Run key to start application
    • Disables RegEdit via registry modification
    • Checks computer location settings
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:1604
    • C:\Users\Admin\AppData\Local\Temp\viltvem.exe
      "C:\Users\Admin\AppData\Local\Temp\viltvem.exe" "-"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • System policy modification
      PID:3048
    • C:\Users\Admin\AppData\Local\Temp\viltvem.exe
      "C:\Users\Admin\AppData\Local\Temp\viltvem.exe" "-"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Modifies registry class
      • Suspicious behavior: GetForegroundWindowSpam
      • System policy modification
      PID:632
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:4276

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\viltvem.exe
      Filesize

      808KB

      MD5

      a8427d2ac070322b517b804eef7d436a

      SHA1

      2d35c0b497def6333a9f70710270073c6a6fe0d6

      SHA256

      a89f454c24da2e5492889294de01afeebe5b75a102a94a5c3b676705cfe30dfd

      SHA512

      42a5025a516c39cca0ae1c3acc8c974bc733ec634935931463ab35ad86c2469a7b4433477160d7fbd33c367c1ccc3bf4c6a5c3bcaa01481abced9129fcff58f6

      Download Submit

    • C:\Users\Admin\AppData\Local\Temp\viltvem.exe
      Filesize

      808KB

      MD5

      a8427d2ac070322b517b804eef7d436a

      SHA1

      2d35c0b497def6333a9f70710270073c6a6fe0d6

      SHA256

      a89f454c24da2e5492889294de01afeebe5b75a102a94a5c3b676705cfe30dfd

      SHA512

      42a5025a516c39cca0ae1c3acc8c974bc733ec634935931463ab35ad86c2469a7b4433477160d7fbd33c367c1ccc3bf4c6a5c3bcaa01481abced9129fcff58f6

      Download Submit

    • C:\Users\Admin\AppData\Local\Temp\viltvem.exe
      Filesize

      808KB

      MD5

      a8427d2ac070322b517b804eef7d436a

      SHA1

      2d35c0b497def6333a9f70710270073c6a6fe0d6

      SHA256

      a89f454c24da2e5492889294de01afeebe5b75a102a94a5c3b676705cfe30dfd

      SHA512

      42a5025a516c39cca0ae1c3acc8c974bc733ec634935931463ab35ad86c2469a7b4433477160d7fbd33c367c1ccc3bf4c6a5c3bcaa01481abced9129fcff58f6

      Download Submit

    • memory/632-135-0x0000000000000000-mapping.dmp

      Download

    • memory/3048-132-0x0000000000000000-mapping.dmp

      Download