Overview

overview

10

Static

static

b753bdf2ac...9d.exe

windows7-x64

10

b753bdf2ac...9d.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/12/2022, 18:55

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General

  • Target

    b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d.exe

  • Size

    80KB

  • MD5

    597f2accb7c2beb1507fad27ac999b48

  • SHA1

    61c2135b0d9055a31cad71c4292281d4cf899353

  • SHA256

    b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d

  • SHA512

    65efb6ab30829fec2940be8b37b63d1feed607533fdb50a132f413e16bfdfc0235a0b23ead186906f89ae7c88ff1e277c5aa5a3b2fad4e22d958ff6b8cf7c36c

  • SSDEEP

    768:ev6nMfqQ24MFSCujc8ebdtF5EmpW/p/hxRSH9NxIkL9v/Q6sWD:evrMKmZKmpSFhxRSHdL9bsS

Score
10/10
evasionpersistence

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
    evasion
  • 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
    persistence
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d.exe
    "C:\Users\Admin\AppData\Local\Temp\b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2764
    • C:\Users\Admin\tiofii.exe
      "C:\Users\Admin\tiofii.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4064
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2764 -s 1484
      2⤵
      • Program crash
      PID:2000
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 2764 -ip 2764
    1⤵
      PID:3164

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\tiofii.exe
      Filesize

      80KB

      MD5

      0bcb5e87462ceb94929a7d9913918f75

      SHA1

      24355e8adbea29d11b7e4d744a000ba7c8110409

      SHA256

      c7b812217251146b7ed45ad985dbd819bdea9d188570b45689af1d1ce220b370

      SHA512

      3204a986b3e4a495e2504c8b760c0eaa18681f7c10d158d0218dd6ff8403554cc673e0a8408b32a2f4ff8f3e92160206a07af1a3c09e61f515ece8d9a7606ce7

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    • C:\Users\Admin\tiofii.exe
      Filesize

      80KB

      MD5

      0bcb5e87462ceb94929a7d9913918f75

      SHA1

      24355e8adbea29d11b7e4d744a000ba7c8110409

      SHA256

      c7b812217251146b7ed45ad985dbd819bdea9d188570b45689af1d1ce220b370

      SHA512

      3204a986b3e4a495e2504c8b760c0eaa18681f7c10d158d0218dd6ff8403554cc673e0a8408b32a2f4ff8f3e92160206a07af1a3c09e61f515ece8d9a7606ce7

      Download Submit