Analysis

  • max time kernel
    88s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-02-2024 02:05

General

  • Target

    dependencies/vcredist2005_x64.exe

  • Size

    3.0MB

  • MD5

    56eaf4e1237c974f6984edc93972c123

  • SHA1

    ee916012783024dac67fc606457377932c826f05

  • SHA256

    0551a61c85b718e1fa015b0c3e3f4c4eea0637055536c00e7969286b4fa663e0

  • SHA512

    f8e15363e34db5b5445c41eea4dd80b2f682642cb8f1046f30ea4fb5f4f51b0b604f7bcb3000a35a7d3ba1d1bcc07df9b25e4533170c65640b2d137c19916736

  • SSDEEP

    49152:+r67+stI6RWGTAdyvlADUrpTmcOgohwJpEM5grO3oc1OXZViFeRyDErkLUMHzkRN:AM9l8pUr9m30L5grOQXZKAsErkbQRN

Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 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 57 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 45 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\dependencies\vcredist2005_x64.exe
    "C:\Users\Admin\AppData\Local\Temp\dependencies\vcredist2005_x64.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:2252
    • C:\Windows\SysWOW64\msiexec.exe
      msiexec /i vcredist.msi
      2⤵
      • Enumerates connected drives
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:3608
  • 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:1168
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1500
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding D918A204433ABA8B229A6308A313573D
        2⤵
        • Loads dropped DLL
        PID:3144
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:3472

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Config.Msi\e57a3d4.rbs

      Filesize

      73KB

      MD5

      9baa1b59e427206b1dfdaa640195ebf8

      SHA1

      d9b80cd9d1ea712a1322dfe29ba038fbf6914522

      SHA256

      9096ae9bcf6fca210d662a33af69afb5efc687f17351c3e027a894060bbd8358

      SHA512

      8a244a78fad069d470eebce306b2569cfec114454b8187e09f76af6c066dee12c7f5a9faab0e38e5229ed1d6c17cbb27ef84f6d4123ea11ebfcc93a00696535e

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

      Filesize

      312KB

      MD5

      77a9bff5af149160775741e204734d47

      SHA1

      7b5126af69b5a79593f39db94180f1ff11b0e39d

      SHA256

      20a26ed9a1edf7763a9b515522c5e29720048a482c7fbc8b7ff6bbdd27e61038

      SHA512

      bb0440f58f07e113bddd9a0afb5aab8af6493218784fe5fa6f4032e3a37088f91b7e766dee87cec4a9ea11d425d27b3b536430de3a52222e8bca3e0247d81e3b

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

      Filesize

      3.0MB

      MD5

      6dbdf338a0a25cdb236d43ea3ca2395e

      SHA1

      685b6ea61e574e628392eaac8b10aff4309f1081

      SHA256

      200fef5d4994523a02c4daa00060db28eb289b99d47fc6c1305183101e72bdeb

      SHA512

      6b5b31c55cf72ab92b17fb6074b3901a1e6afe0796ef9bc831e4dfb97450376d2889cd24b1cf3fce60eb3c1bcd1b31254b5cfa3ef6107974dfa0b35c233daf5a

    • C:\Windows\Installer\MSIA75C.tmp

      Filesize

      28KB

      MD5

      85221b3bcba8dbe4b4a46581aa49f760

      SHA1

      746645c92594bfc739f77812d67cfd85f4b92474

      SHA256

      f6e34a4550e499346f5ab1d245508f16bf765ff24c4988984b89e049ca55737f

      SHA512

      060e35c4de14a03a2cda313f968e372291866cc4acd59977d7a48ac3745494abc54df83fff63cf30be4e10ff69a3b3c8b6c38f43ebd2a8d23d6c86fbee7ba87d

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

      Filesize

      23.0MB

      MD5

      0563a0a3d02df60d8ae0bb66938238f4

      SHA1

      338ac5f6e22a283be31bc713e9daf7db60b84bda

      SHA256

      e3cc589e92cb142f0359256fe87c559f2567a3fa5d4fb7329e934813e00aefe9

      SHA512

      fdd8ebebbd2e23ec04e50f145d319c75658b919c3c76d8a4e9ff214f162a0566eb6bd2e630391f163c33ba0fe70170b06afb2a7b072339d96019dc3c1d089afd

    • \??\Volume{14f6f45c-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{a71a7abc-0247-4e99-a2a8-2b38e13f4fc5}_OnDiskSnapshotProp

      Filesize

      6KB

      MD5

      4bfb6d239921685dc419228dd904e237

      SHA1

      468bb31c443f264794dbf73813f74f8d2c7655f2

      SHA256

      d237566b7d4dac15c92932d3845751341a1bcf5e1d8937496d20c7ccc93cc68f

      SHA512

      7e03f52b7b753e1d2d83d3a4e9b133ec6191c667737bf30ac1aee73798c5ec212c4f3367100a3de720861da8cdb15dd3dce28eca060edbb3abb8038221d4daaa