Analysis

  • max time kernel
    142s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/02/2024, 14:17

General

  • Target

    8c8a12ad071e2916f1601a12879c14dd.exe

  • Size

    115KB

  • MD5

    8c8a12ad071e2916f1601a12879c14dd

  • SHA1

    33c46d051870a085f7731626fc327975134a1559

  • SHA256

    f71318cf8ed1b720cae18bbbc39486327f4d982d6ff02ec0b571ac2b6945c195

  • SHA512

    ef9c89ed4c86d2b899b7785ba1417b3d53053baea0947107e32e92433416b03fa7238ee6bf3b9f35701881143c7868b3e950d0d267e6ef52790ed1f2dfabc055

  • SSDEEP

    3072:W1+MJKrUnFYY5z1i0Nmbi5fJBNIVFr5eoutu:eIrPj0NmWtNIDr5eoSu

Malware Config

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • UAC bypass 3 TTPs 1 IoCs
  • ModiLoader Second Stage 16 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • UPX packed file 18 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 3 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • System policy modification 1 TTPs 1 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\8c8a12ad071e2916f1601a12879c14dd.exe
    "C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe"
    1⤵
    • Checks computer location settings
    • Checks whether UAC is enabled
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4488
    • C:\Windows\mstwain32.exe
      "C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.exe"
      2⤵
      • UAC bypass
      • Deletes itself
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • System policy modification
      PID:1692
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4896

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Windows\cmsetac.dll

          Filesize

          32KB

          MD5

          c200deb575126b97609d020897aaa5ac

          SHA1

          9d086f32f5e6a134c5a9dffe35d29c2a3261a42f

          SHA256

          a4a0c6545cd3990fcfb973ff5b76517520edf142d9f09fbcb118c92574ed2762

          SHA512

          c8040e3997967d4c25401b53b9fb97545709829876031cdd985c46cf0cccb467a546c8563441b2fbe2e03de0c9829732a345eb629e2eb2eecb87026794e4b7d7

        • C:\Windows\mstwain32.exe

          Filesize

          115KB

          MD5

          8c8a12ad071e2916f1601a12879c14dd

          SHA1

          33c46d051870a085f7731626fc327975134a1559

          SHA256

          f71318cf8ed1b720cae18bbbc39486327f4d982d6ff02ec0b571ac2b6945c195

          SHA512

          ef9c89ed4c86d2b899b7785ba1417b3d53053baea0947107e32e92433416b03fa7238ee6bf3b9f35701881143c7868b3e950d0d267e6ef52790ed1f2dfabc055

        • C:\Windows\ntdtcstp.dll

          Filesize

          7KB

          MD5

          67587e25a971a141628d7f07bd40ffa0

          SHA1

          76fcd014539a3bb247cc0b761225f68bd6055f6b

          SHA256

          e6829866322d68d5c5b78e3d48dcec70a41cdc42c6f357a44fd329f74a8b4378

          SHA512

          6e6de7aa02c48f8b96b06e5f1160fbc5c95312320636e138cc997ef3362a61bc50ec03db1f06292eb964cd71915ddb2ec2eb741432c7da44215a4acbb576a350

        • memory/1692-31-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/1692-35-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/1692-20-0x0000000000730000-0x0000000000731000-memory.dmp

          Filesize

          4KB

        • memory/1692-68-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/1692-24-0x00000000009C0000-0x00000000009CE000-memory.dmp

          Filesize

          56KB

        • memory/1692-27-0x00000000009B0000-0x00000000009B1000-memory.dmp

          Filesize

          4KB

        • memory/1692-28-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/1692-29-0x0000000000790000-0x0000000000798000-memory.dmp

          Filesize

          32KB

        • memory/1692-30-0x00000000009C0000-0x00000000009CE000-memory.dmp

          Filesize

          56KB

        • memory/1692-65-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/1692-32-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/1692-62-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/1692-38-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/1692-41-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/1692-44-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/1692-47-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/1692-50-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/1692-53-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/1692-56-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/1692-59-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/4488-11-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/4488-0-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/4488-1-0x00000000005A0000-0x00000000005A1000-memory.dmp

          Filesize

          4KB