Resubmissions

18-04-2024 18:50

240418-xha8wabh29 10

01-01-2024 15:12

240101-slnwxsfeh4 10

Analysis

  • max time kernel
    181s
  • max time network
    211s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-01-2024 15:12

General

  • Target

    4fcaca23e9cfb7e5448f41bb520c9c35c68fd795ac6b3707d0c64cf92738acf2.exe

  • Size

    4.7MB

  • MD5

    e86893b92eca6e8dfbcfb9bbc08ee973

  • SHA1

    acaf1392ea344a074cd4dd47faa6a7e1530747f3

  • SHA256

    4fcaca23e9cfb7e5448f41bb520c9c35c68fd795ac6b3707d0c64cf92738acf2

  • SHA512

    24f258fb7f088b9c139ef83dd90c63248eee3e85b871841406765386dad20e48d2b8cdd19a0e165e10ff5eeb4494bafd3c84989f3f73112c1273399f7b23f635

  • SSDEEP

    98304:0s7ZE5JsxXe8NpqBjkZxHJMAM0hsEfIOC34SSPl0V1Eo7N3grvl0iqN+XW0FUlK0:0srXe8NEMMAZhsXOCYe3P7NuI4WHlK8

Malware Config

Signatures

  • Dharma

    Dharma is a ransomware that uses security software installation to hide malicious activities.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Drops startup file 1 IoCs
  • VMProtect packed file 3 IoCs

    Detects executables packed with VMProtect commercial packer.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 4 IoCs
  • Drops file in System32 directory 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 6 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\4fcaca23e9cfb7e5448f41bb520c9c35c68fd795ac6b3707d0c64cf92738acf2.exe
    "C:\Users\Admin\AppData\Local\Temp\4fcaca23e9cfb7e5448f41bb520c9c35c68fd795ac6b3707d0c64cf92738acf2.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2848
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1580
      • C:\Windows\system32\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:748
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:4092
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1820

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe.id-DB0F6175.[[email protected]].vanss

      Filesize

      35KB

      MD5

      b1b24712b88f2a67ad95b0f3af973cca

      SHA1

      a0fff89909b74a3aa40fbed27bba93f3dbd8b8d6

      SHA256

      714a8f436e700fab03b146582522ecab60ae4c0aff7016a73acaced65701c459

      SHA512

      e7026457e65faecc024fff6d20b6ea7b19f98b5470f51188365b04c401642aa0b9d19b8afbe88b6be11f90433e60861c7a32d83e5da4f2640f5b34653129b635

    • memory/2848-2-0x0000000000400000-0x0000000000B90000-memory.dmp

      Filesize

      7.6MB

    • memory/2848-0-0x00000000012C0000-0x00000000012C1000-memory.dmp

      Filesize

      4KB

    • memory/2848-1-0x0000000000400000-0x0000000000B90000-memory.dmp

      Filesize

      7.6MB

    • memory/2848-1458-0x0000000000400000-0x0000000000B90000-memory.dmp

      Filesize

      7.6MB