Resubmissions

13-07-2024 09:54

240713-lxbx6swdmm 10

13-07-2024 09:50

240713-lvbvdsyapd 10

13-07-2024 09:46

240713-lr1dksyajd 10

Analysis

  • max time kernel
    92s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-07-2024 09:46

General

  • Target

    15cb04fa5c58299e320c833b62a6e44ec67423aed9fcc969d5b90f4380ccf24f.exe

  • Size

    213KB

  • MD5

    3271867f57a7ddd53d2f36210f79b241

  • SHA1

    04ccf49f32406c6a0d61745bae090a9426a1500d

  • SHA256

    15cb04fa5c58299e320c833b62a6e44ec67423aed9fcc969d5b90f4380ccf24f

  • SHA512

    a0a0725b6023cab53363303db4aa0c6c1c1916a6b178b1f3a6301e779c67a2b1d68202a696ee328ffa9080f2f7236f581cbf8aadef4eadebb748ed6fcf35baa9

  • SSDEEP

    3072:XBkGJ8YXmHDZLWlTSMu/9laSnsBOSrXo0hL5VNWrIV9Y5cYE3vqY:uGuYXeDZW4MuVgUsBOchL5LWrIV9ugq

Malware Config

Signatures

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Renames multiple (153) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • 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 1 IoCs
  • Drops desktop.ini file(s) 10 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • NTFS ADS 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\15cb04fa5c58299e320c833b62a6e44ec67423aed9fcc969d5b90f4380ccf24f.exe
    "C:\Users\Admin\AppData\Local\Temp\15cb04fa5c58299e320c833b62a6e44ec67423aed9fcc969d5b90f4380ccf24f.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:3244
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\README.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:4380
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin delete shadows /all /quiet & wmic shadowcopy delete & bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4352
      • C:\Windows\SysWOW64\Wbem\WMIC.exe
        wmic shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2000
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\usb_maker.bat" "
      2⤵
      • NTFS ADS
      PID:2072
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2620

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\usb_maker.bat

    Filesize

    3KB

    MD5

    c0c5ea4a87cf257e1bb8e00a12c07547

    SHA1

    a19b220f995c1fa20543923826dad36c3a93cb9d

    SHA256

    a621983b68c548c7474d8bebae8d21cf3c475cc5c88ae56a14e49c0dda1596b2

    SHA512

    f8f77fd675dc8e2fc5c617c92a091f3e84f915bfd272d193ef26e90747505c9153f53eedf2ba7879099f986895576c7dfef30a82a03612db5f1ad136685bf0ab

  • C:\Users\Admin\Pictures\Camera Roll\README.txt

    Filesize

    59B

    MD5

    09b2d4bb8bdb6e27426041856d3dd047

    SHA1

    403fc705e8db8e37d8a0f8356e21766df22aa7f7

    SHA256

    b411b13301ba7e00525cf9bc6e29e48a3d0d4c68be2a67807aa395b52cb78ae9

    SHA512

    75eea188e4586ce1a46ea8e7f24d7f3f30fcdd832e2af4d2ead6fe6cdfbeda31f7082b6aadcd4cfba059edce59f494e51163e0e02d26160d759dc31f6e37a080

  • memory/3244-0-0x00000000745FE000-0x00000000745FF000-memory.dmp

    Filesize

    4KB

  • memory/3244-1-0x0000000000C10000-0x0000000000C4A000-memory.dmp

    Filesize

    232KB

  • memory/3244-2-0x00000000059F0000-0x0000000005F94000-memory.dmp

    Filesize

    5.6MB

  • memory/3244-3-0x00000000054F0000-0x0000000005582000-memory.dmp

    Filesize

    584KB

  • memory/3244-4-0x00000000745F0000-0x0000000074DA0000-memory.dmp

    Filesize

    7.7MB

  • memory/3244-5-0x0000000005630000-0x000000000563A000-memory.dmp

    Filesize

    40KB

  • memory/3244-341-0x00000000745FE000-0x00000000745FF000-memory.dmp

    Filesize

    4KB

  • memory/3244-342-0x00000000745F0000-0x0000000074DA0000-memory.dmp

    Filesize

    7.7MB