Analysis

  • max time kernel
    152s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-12-2022 08:30

General

  • Target

    a4b0296526c8fde8a88fe8659a2971dc0ff862841cb912ad4498c57396a5a520.exe

  • Size

    256KB

  • MD5

    2689ae1d29f424425270ce563b5bc725

  • SHA1

    966db0527364b87d94bcc2d6c6b42ec08531e7d0

  • SHA256

    a4b0296526c8fde8a88fe8659a2971dc0ff862841cb912ad4498c57396a5a520

  • SHA512

    07403bdf801e3aaede66c56fca816faef249cd7e22fb173660fcda763495ed98c74c3b142d3ec131590f5ea4f0fc8313bf95b0b340f1da811d57fd6f9db79e32

  • SSDEEP

    3072:gcnPoBqY+1kIJG/rhwow1wGQWDxy97g86X6dvYjoNWF1Wv0df+0jR57tn7:rPoBdfdKIWy7oENgWqxR57tn

Score
10/10

Malware Config

Signatures

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

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a4b0296526c8fde8a88fe8659a2971dc0ff862841cb912ad4498c57396a5a520.exe
    "C:\Users\Admin\AppData\Local\Temp\a4b0296526c8fde8a88fe8659a2971dc0ff862841cb912ad4498c57396a5a520.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3996
    • C:\Users\Admin\teoof.exe
      "C:\Users\Admin\teoof.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:5080

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\teoof.exe

    Filesize

    256KB

    MD5

    2fd7c3b715301d64b5dec8b925b73b74

    SHA1

    2d4292972b04b325966141eb5dae4562b173ae86

    SHA256

    dba9e3cc4866b8791c3d964e0fda51e1d3a898d956693fa124aefb14cdc2b92a

    SHA512

    a315ad478e3452ad879a73327d64dfc6c2c40f679ed728efdd6428e78dd39b71085f24e1af66788c3890587eb1bbbe98f1d5845927fc3799ea774a5edc14c394

  • C:\Users\Admin\teoof.exe

    Filesize

    256KB

    MD5

    2fd7c3b715301d64b5dec8b925b73b74

    SHA1

    2d4292972b04b325966141eb5dae4562b173ae86

    SHA256

    dba9e3cc4866b8791c3d964e0fda51e1d3a898d956693fa124aefb14cdc2b92a

    SHA512

    a315ad478e3452ad879a73327d64dfc6c2c40f679ed728efdd6428e78dd39b71085f24e1af66788c3890587eb1bbbe98f1d5845927fc3799ea774a5edc14c394

  • memory/3996-132-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/3996-141-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/5080-140-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/5080-142-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB