Analysis

  • max time kernel
    92s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-11-2024 17:59

General

  • Target

    a6b7839d287c71e8c724df8cc024c4f7d7ae9057.msi

  • Size

    4.5MB

  • MD5

    999440b3b0609a7fa2f06f4d07fa8e6e

  • SHA1

    a6b7839d287c71e8c724df8cc024c4f7d7ae9057

  • SHA256

    2a0f495cd25dcbf02b2b0b11032d32a0460c9b7c5ad491afa4060ea3ca675f90

  • SHA512

    c98a2dc0d1aba3b4e8488461caba4fa09656b623914161c7956a09c98c1d12835cddf5d499f97535c4886b104bd0870e4f2fd27a7e69ba9c4d58165e3907bb7d

  • SSDEEP

    98304:DAowTTYcM2Pewg9Y6mnjZpLhL8QaQs74iQlSKsrM18o4bbmo+IW/+b:DAouq2PW9YJjjLhPq4VlSKuMkb7r++b

Malware Config

Signatures

  • NetSupport

    NetSupport is a remote access tool sold as a legitimate system administration software.

  • Netsupport family
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Blocklisted process makes network request 5 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 8 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 5 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

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

  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of WriteProcessMemory 7 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\a6b7839d287c71e8c724df8cc024c4f7d7ae9057.msi
    1⤵
    • Blocklisted process makes network request
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2736
  • 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:4792
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1980
      • C:\Windows\system32\reg.exe
        reg add HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v ScreenConnect /t REG_SZ /d "C:\ProgramData\MScreenConnect\client32.exe"
        2⤵
        • Adds Run key to start application
        • Modifies registry key
        PID:2780
      • C:\ProgramData\MScreenConnect\client32.exe
        "C:\ProgramData\MScreenConnect\client32.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of FindShellTrayWindow
        PID:3576
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:2172

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Config.Msi\e580be3.rbs

      Filesize

      10KB

      MD5

      e94331497c4141836c099907b771d93f

      SHA1

      8983ea16cf9af528de77ad26f78e941a7c3dc0a0

      SHA256

      b32dd6521e5b812ff04411597599d0ea3bcb55bbb218dc8fce9d813edf3537ee

      SHA512

      37a05dbc29bf29c8c41b8add58002ae404393ccbf93f8d0390e50ea95a7c66e983473df7df0281678ab23ecf55b8d15eaba0961716b9ce143c8208efc1725637

    • C:\ProgramData\MScreenConnect\HTCTL32.DLL

      Filesize

      306KB

      MD5

      3eed18b47412d3f91a394ae880b56ed2

      SHA1

      1b521a3ed4a577a33cce78eee627ae02445694ab

      SHA256

      13a17f2ad9288aac8941d895251604beb9524fa3c65c781197841ee15480a13f

      SHA512

      835f35af4fd241caa8b6a639626b8762db8525ccceb43afe8fffc24dffad76ca10852a5a8e9fc114bfbf7d1dc1950130a67037fc09b63a74374517a1f5448990

    • C:\ProgramData\MScreenConnect\NSM.LIC

      Filesize

      262B

      MD5

      b9956282a0fed076ed083892e498ac69

      SHA1

      d14a665438385203283030a189ff6c5e7c4bf518

      SHA256

      fcc6afd664a8045bd61c398be3c37a97536a199a48d277e11977f93868ae1acc

      SHA512

      7daa09113c0e8a36c91cc6d657c65851a20dff6b60ac3d2f40c5737c12c1613c553955f84d131ba2139959973fef9fc616ca5e968cb16c25acf2d4739eed87eb

    • C:\ProgramData\MScreenConnect\PCICL32.DLL

      Filesize

      3.3MB

      MD5

      f782c24a376285c9b8a3a116175093f8

      SHA1

      b8fdb6e95c7313cf31f14a3a31cc334b56e6df09

      SHA256

      c7baf1647f6fef1b1a4231c9743f20f7a4b524ca4eb987a0acbeeef7e037d7e3

      SHA512

      256385a6663dcf70a5a9a1b766d1f826760f07efa9b9248047dc43d41f6a9f4dd56ca2b218c222ea1d441e2f7ba9bb114cde6954827b9761ebb1f23bba7ad1bb

    • C:\ProgramData\MScreenConnect\client32.exe

      Filesize

      104KB

      MD5

      f6abef857450c97ea74cd8f0eb9a8c0a

      SHA1

      a1acdd10f5a8f8b086e293c6a60c53630ad319fb

      SHA256

      db0acb4a3082edc19ca9a78b059258ea36b4be16eee4f1172115fc83e693a903

      SHA512

      b6a2196ebfa51bb3fb8fb2b95ad5275828ab5435fd859fc993e2b3ed92a74799fe1c8b178270f99c79432f39aa9dbc0090038f037fcb651ab75c14b18102671f

    • C:\ProgramData\MScreenConnect\client32.ini

      Filesize

      664B

      MD5

      14f6ebed5e1176f17c18d00a2dc64b2e

      SHA1

      cb9c079373658ce098e1d07d4a2c997bf3141b4b

      SHA256

      d4c1f00382f01abbb3142ef6d9c3e51557d0ced12a52861d8c5df44d1ce723ac

      SHA512

      e5f24a695749d693e873ea60b8caaff5cb3b306887721e3f9f308afe697fba37f3a6226322aedebb46764d6bbbaf21df44d4c6a02db49b067437d7e7d0cceaf9

    • C:\ProgramData\MScreenConnect\msvcr100.dll

      Filesize

      755KB

      MD5

      0e37fbfa79d349d672456923ec5fbbe3

      SHA1

      4e880fc7625ccf8d9ca799d5b94ce2b1e7597335

      SHA256

      8793353461826fbd48f25ea8b835be204b758ce7510db2af631b28850355bd18

      SHA512

      2bea9bd528513a3c6a54beac25096ee200a4e6ccfc2a308ae9cfd1ad8738e2e2defd477d59db527a048e5e9a4fe1fc1d771701de14ef82b4dbcdc90df0387630

    • C:\ProgramData\MScreenConnect\pcicapi.dll

      Filesize

      44KB

      MD5

      9daa86d91a18131d5caf49d14fb8b6f2

      SHA1

      6b2f7ceb6157909e114a2b05a48a1a2606b5caf1

      SHA256

      1716640cce74322f7ee3e3e02b75cd53b91686f66e389d606dab01bd9f88c557

      SHA512

      9a98e0d9e2dda8aefa54bddb3c7b71501d638dff68863939de6caa117b0e7bf15e581a75419ef8a0da3f1c56a19f1b0f4c86d65f8581773ab88ff5764b9bb3aa

    • C:\ProgramData\MScreenConnect\pcichek.dll

      Filesize

      27KB

      MD5

      e311935a26ee920d5b7176cfa469253c

      SHA1

      eda6c815a02c4c91c9aacd819dc06e32ececf8f0

      SHA256

      0038ab626624fa2df9f65dd5e310b1206a9cd4d8ab7e65fb091cc25f13ebd34e

      SHA512

      48164e8841cfc91f4cbf4d3291d4f359518d081d9079a7995378f970e4085b534f4bafc15b83f4824cc79b5a1e54457b879963589b1acbcfe727a03eb3dffd1c

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\30069012ED3CF5DB92F9F4FC78D55E2D_16AA5B9B040CB195ADDB70661F18F3C5

      Filesize

      1KB

      MD5

      2863a7c5e76560b9b033dd654efce43e

      SHA1

      3248d9071d19b2adad75fc07fe1d11c189b7f9e0

      SHA256

      8088a7d8c8ab4ed3ac57ddc04a08c70d1fd24ea241c7ffac22909cfa7da33ba3

      SHA512

      b9e81eb27445656e7b4d05e8db09be0ccfce54785f739d472188e7a0c2f5a40616d070afb8bc12655ffecd32a6486806d722e130a1d402f212e81d89b89d481f

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B03113490075047F519A3F760F0FF379_E0C89CBF9F7C022C313E80748FA098C7

      Filesize

      2KB

      MD5

      4f88f4920e3455d3312959832f1dbe69

      SHA1

      ef68a75462f3d2c1f5bb2c116d0d75a6cff98809

      SHA256

      ef3ab99f27aac30ac77d6b131530d4d15bcaa5ba9f76b3c41ce2b0f1cb265b24

      SHA512

      260a0711c325bcb44545e555b7c9f754132a5ac384ad1a9785dbc37fdafb4365d0703359be44b652d1080bb5eb32ac36e4b1972e2fd9c20e98ab3926d0fa11fa

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\30069012ED3CF5DB92F9F4FC78D55E2D_16AA5B9B040CB195ADDB70661F18F3C5

      Filesize

      412B

      MD5

      fe08ace64ad462508cb5ba5218dbde7f

      SHA1

      4003d3dfeba66e16d1467400dcaebd8f6dc6b0f0

      SHA256

      0d2064b3b51b7d56b5a8a15770f9b31105dc0a2c926584d876c5242b31cd9c7c

      SHA512

      d7a04347c1ee17294559b61cbceb3b1dd45f1495e3d5a8a9012b1bfb556455dede1d35071a5ae4eccc4205538ab6e0ac4462a3379d949c119d47f693edc96b1c

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B03113490075047F519A3F760F0FF379_E0C89CBF9F7C022C313E80748FA098C7

      Filesize

      428B

      MD5

      4e5289d1071f5c6058d10c4267af544d

      SHA1

      b15a0ce8e18b174ea5eac29a4a28424dd5b21bc3

      SHA256

      7d7233539341f6ca6467ad3d5a772c75b2afadde84fc8b192d23dd295621b40c

      SHA512

      1964b45ad9c0b9f5a054dbf1c88ffdd04409d1559533e71256cf3be169ad1e2865b021c1577c242ac3c8647dfddfda45a80554ca525b58d99439327bbc30fef4

    • C:\Windows\Installer\e580be2.msi

      Filesize

      4.5MB

      MD5

      999440b3b0609a7fa2f06f4d07fa8e6e

      SHA1

      a6b7839d287c71e8c724df8cc024c4f7d7ae9057

      SHA256

      2a0f495cd25dcbf02b2b0b11032d32a0460c9b7c5ad491afa4060ea3ca675f90

      SHA512

      c98a2dc0d1aba3b4e8488461caba4fa09656b623914161c7956a09c98c1d12835cddf5d499f97535c4886b104bd0870e4f2fd27a7e69ba9c4d58165e3907bb7d

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

      Filesize

      24.1MB

      MD5

      f01190b926f341eebc2825d448b3b041

      SHA1

      06c6ef14e5d6be860f238253be7b24306dd5e4a7

      SHA256

      7c1737d3e101c8639bc29188dc233f82808de57046e97ab45beb2240057ca412

      SHA512

      31a6c245f3f51c02003b66bc4688b4bc60a7214c2ebc03bb63429f5e5bc98d574b91f3dcce4f59c3d11ade684cc188a5282060a714d6ea6e9abcd3422782011f

    • \??\Volume{612d9cf5-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{4d68f022-2d2f-4524-87de-ae570c44e1d4}_OnDiskSnapshotProp

      Filesize

      6KB

      MD5

      08cde21799a7ddc1cc3cff6f05d4e0e2

      SHA1

      a15a02e04cb696f266762ea0e674905c98aa1613

      SHA256

      c25777f3c3bdf844961862940171ee53d352706cfa4ee6742a18d865efe0e574

      SHA512

      e33af2e7ecaa775fda22c88df5dbe3ba0e5481bd7f0de3b72203d55f0aa9b13e29d576335dcb6ba38dd5e81eb197194290811a695f3da7a31615b07eec25c3db