Analysis

  • max time kernel
    133s
  • max time network
    152s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    08-06-2024 17:19

General

  • Target

    install_all/vcredist2005_x86.exe

  • Size

    2.6MB

  • MD5

    ce2922f83fb4b170affce0ea448b107b

  • SHA1

    b8fab0bb7f62a24ddfe77b19cd9a1451abd7b847

  • SHA256

    4ee4da0fe62d5fa1b5e80c6e6d88a4a2f8b3b140c35da51053d0d7b72a381d29

  • SHA512

    e94b077e054bd8992374d359f3adc4d1d78d42118d878556715d77182f7d03635850b2b2f06c012ccb7c410e2b3c124cf6508473efe150d3c51a51857ce1c6b0

  • SSDEEP

    49152:rqGRIgg2SirwkF9xdtb43lyGKCafpKkiwnaDahmPzpY4FPyaza:rxxLFfY/KCCpKk9aWMzZyau

Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Blocklisted process makes network request 1 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 Program Files directory 1 IoCs
  • Drops file in Windows directory 61 IoCs
  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 3 IoCs
  • Modifies registry class 56 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 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:\Users\Admin\AppData\Local\Temp\install_all\vcredist2005_x86.exe
    "C:\Users\Admin\AppData\Local\Temp\install_all\vcredist2005_x86.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:3660
    • C:\Windows\SysWOW64\msiexec.exe
      msiexec /i vcredist.msi
      2⤵
      • Blocklisted process makes network request
      • Enumerates connected drives
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:3536
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4872
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:740
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding AE1ECA8DEE4D630A12FD2A17C801ADEB
        2⤵
        • Loads dropped DLL
        PID:1356
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:2496

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\vcredis1.cab

      Filesize

      247KB

      MD5

      cc064d4b81619991de8131a86ad77681

      SHA1

      88d80d86cc20c27d7d2a872af719300bd2bb73f9

      SHA256

      913ee5a1cae3e5a1872b3a5efaaa00c58e4beb692492b138f76967da671b0477

      SHA512

      5aff0eb26cfc187bf58721b2b6d73357d9f1e66d1ac5340ad9ddc08b40ad0eda27a144cb3b650604637a7476c282ded83ed890de98a73ccaf0cc021da3a9eb25

    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\vcredist.msi

      Filesize

      2.6MB

      MD5

      b20bbeb818222b657df49a9cfe4fed79

      SHA1

      3f6508e880b86502773a3275bc9527f046d45502

      SHA256

      91bdd063f6c53126737791c9eccf0b2f4cf44927831527245bc89a0be06c0cb4

      SHA512

      f534bc7bf1597e728940e6c3b77f864adfaa413bb1e080458326b692b0f96bddf4fbd294eeed36d7764a3578e6c8e919488bbf63b8fe2d4355ab3efd685424a4

    • C:\Windows\Installer\MSI7CB.tmp

      Filesize

      28KB

      MD5

      85221b3bcba8dbe4b4a46581aa49f760

      SHA1

      746645c92594bfc739f77812d67cfd85f4b92474

      SHA256

      f6e34a4550e499346f5ab1d245508f16bf765ff24c4988984b89e049ca55737f

      SHA512

      060e35c4de14a03a2cda313f968e372291866cc4acd59977d7a48ac3745494abc54df83fff63cf30be4e10ff69a3b3c8b6c38f43ebd2a8d23d6c86fbee7ba87d

    • \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2

      Filesize

      24.6MB

      MD5

      70eb3f39643d2688001fc52e0b6a714e

      SHA1

      f38a8cb3b9d3531f225cf1a20fd8418e0be0cea9

      SHA256

      aa3b7c4c39c56ce2462da44bc6c782788434f55cf9190cba073431c6f685b856

      SHA512

      2662da3faaefcd163f224f893cab65ed152960fbad0e83f877d60ae9cb756c49b0e56b956f4aeef83160609203630492636639370a44d7f9b5d37dbf2f76dc4d

    • \??\Volume{e9075ed3-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{f4fb5d64-2622-4c49-a446-309e721e4206}_OnDiskSnapshotProp

      Filesize

      6KB

      MD5

      12ae972f8b801841d0f450a224575446

      SHA1

      6b75b35d7d0e692a5a1a786e83ce805305ac7c6c

      SHA256

      a0f8bcb72b90cfde73fe6ec7d94d298287e5877f5942f6576b26599b03e8d5ab

      SHA512

      d86c675c4268baadba229fbe9dafe6af9935c1dbf663f609b53a74317949170d6e08e1eaf0185545d10cee9ea8abc45718e9f7fa3e599fc873749f93f0d68136