Resubmissions

03-03-2024 01:34

240303-by6ttsbe94 10

03-03-2024 01:31

240303-bxkj7sbe62 7

Analysis

  • max time kernel
    144s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-03-2024 01:34

General

  • Target

    Ransomware/Birele.exe

  • Size

    116KB

  • MD5

    41789c704a0eecfdd0048b4b4193e752

  • SHA1

    fb1e8385691fa3293b7cbfb9b2656cf09f20e722

  • SHA256

    b2dcfdf9e7b09f2aa5004668370e77982963ace820e7285b2e264a294441da23

  • SHA512

    76391ac85fdc3be75441fcd6e19bed08b807d3946c7281c647f16a3be5388f7be307e6323fac8502430a4a6d800d52a88709592a49011ecc89de4f19102435ea

  • SSDEEP

    3072:pYV/aVHN9ySTn34w33FVTyuGAxsvBLSqAKZqoqrxy031l3y:8adNlltyu3Pa5gr33

Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Ransomware\Birele.exe
    "C:\Users\Admin\AppData\Local\Temp\Ransomware\Birele.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1788
    • C:\Windows\SysWOW64\taskkill.exe
      taskkill /F /IM explorer.exe
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:1668

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/1788-0-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1788-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/1788-2-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1788-4-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1788-5-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1788-6-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB