Overview

overview

10

Static

static

10

bee8ffd869...22.exe

windows7-x64

10

bee8ffd869...22.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    138s
  • max time network
    107s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/05/2024, 01:25

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General

  • Target
    bee8ffd8698ff75f8c46b2fad4fba84fecf4baa1b6669128a181055605bbe922.exe
  • Size 471KB
  • Sample240518-btdbqade69
  • SHA256 bee8ffd8698ff75f8c46b2fad4fba84fecf4baa1b6669128a181055605bbe922
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
defense_evasionevasionexecutionimpactransomwaretrojanupx

Malware Config

Signatures

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 2 IoCs
    evasiontrojan
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • UPX dump on OEP (original entry point) 3 IoCs
  • Disables use of System Restore points 1 TTPs
    evasion
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • UPX packed file 3 IoCs

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

    upx
  • Drops desktop.ini file(s) 28 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Modifies registry class 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\bee8ffd8698ff75f8c46b2fad4fba84fecf4baa1b6669128a181055605bbe922.exe
    "C:\Users\Admin\AppData\Local\Temp\bee8ffd8698ff75f8c46b2fad4fba84fecf4baa1b6669128a181055605bbe922.exe"
    1⤵
    • Modifies Windows Defender Real-time Protection settings
    • Checks computer location settings
    • Drops startup file
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:532
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin Delete Shadows /All /Quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2740
      • C:\Windows\system32\vssadmin.exe
        vssadmin Delete Shadows /All /Quiet
        3⤵
        • Interacts with shadow copies
        PID:4024
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {default} recoveryenabled No
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1136
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} recoveryenabled No
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:4904
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {default} bootstatuspolicy ignoreallfailures
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2760
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2624
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c wmic SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4912
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic SHADOWCOPY /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2328
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c for /F "tokens = *" %1 in ('wevtutil.exe el') DO wevtutil.exe cl "%1"
      2⤵
        PID:5904
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\dotnet\#OPIX-Help.txt
        2⤵
          PID:1328
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" (/c ping 127.0.0.1 -n 5 > nul & del "C:\Users\Admin\AppData\Local\Temp\bee8ffd8698ff75f8c46b2fad4fba84fecf4baa1b6669128a181055605bbe922.exe"
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4272
          • C:\Windows\system32\PING.EXE
            ping 127.0.0.1 -n 5
            3⤵
            • Runs ping.exe
            PID:6696
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1680

      Network

            MITRE ATT&CK Enterprise v15

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            Downloads

            #OPIX-Help.txt
            • Path C:\Program Files\#OPIX-Help.txt
            • Size 593B
            • SHA256 a7bc89a51f90eb26d292c188713d740df740a68d9fca0b54a5597831976b65e7
            • MD5 SHA1 SHA512
            Submit Download

            memory/532-0-0x00007FF70F410000-0x00007FF70F54F000-memory.dmp
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            memory/532-13742-0x00007FF70F410000-0x00007FF70F54F000-memory.dmp
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            memory/532-13750-0x00007FF70F410000-0x00007FF70F54F000-memory.dmp
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