Resubmissions

09/01/2024, 08:27

240109-kcd2csbfcp 7

Analysis

  • max time kernel
    119s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    09/01/2024, 08:27

General

  • Target

    1.msi

  • Size

    2.0MB

  • MD5

    8226bd1f1703049b0e55f5d8aa89d9ba

  • SHA1

    8f5768635c9de9b4955aff22ccc738106d9293eb

  • SHA256

    160ac866b22f6ffc7b5ee6067dd0ee514ca989c24d92d04778024875053c6d22

  • SHA512

    abee7a2c44ad234010d2cab2b9d0249b67f39c463424ab993833d79eed73c7e783a212baef0e1d5656c6c948e43126943e17b2795e25869611258d87d901f386

  • SSDEEP

    49152:jSMcyy91hUbeMGDquvhwhMEMjOETmDWJfJD/wzRZXDiy/QYVxF1NXZRc6k5EH:fytUbelDquvhwhMEcIDWJ4Rwy/QYVxFG

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

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

  • Drops file in Windows directory 11 IoCs
  • Modifies data under HKEY_USERS 43 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 61 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\1.msi
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1712
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2320
    • C:\Windows\Installer\MSI1E8A.tmp
      "C:\Windows\Installer\MSI1E8A.tmp"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2904
      • C:\Users\Default\Links\QtUpDaDa.exe
        C:\Users\Default\Links\QtUpDaDa.exe
        3⤵
        • Executes dropped EXE
        PID:1800
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2544
  • C:\Windows\system32\DrvInst.exe
    DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000003A8" "0000000000000584"
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:2784

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Windows\Installer\MSI1E8A.tmp

          Filesize

          1.9MB

          MD5

          63b047b8a800e448b947c977107d46df

          SHA1

          6902f160dde7ebde42c6c6bfa3360324b23e0b42

          SHA256

          10575209de737c80e72ace550b296879399cdff2057c27c9577c1cfb4e3201e6

          SHA512

          9c10560a42c6395b450b745bd7ffcb4200073c1eeb63360384b801cc20fe4b89c3da075e4e1f5e6c85ffe910132ca2e959a01446fe51b7135280f73d1be0c1e9

        • \Users\Default\Links\QtUpDaDa.exe

          Filesize

          92KB

          MD5

          79eb958751eab61722b457a2dbf587fa

          SHA1

          dc0cccb6802a2147bde645205c6e90a9fa288e8a

          SHA256

          15238585413ed82e07f28eefb1d2570f926e9bbae33f837220c7e5e9c9f889c4

          SHA512

          aa644d2d466a496720ec115544615fd99b9770dc73651fb7fe4ca5c6d1dbe5ef1dfdf82c0ca5f1cdf1f1756aab37188e01cca9e3eb914b9a6d0870b5edd60537