Analysis

  • max time kernel
    118s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    15-03-2024 20:16

General

  • Target

    PaintDotNet_x86.msi

  • Size

    56.2MB

  • MD5

    ec6bf9b6cfb60286994910fb8363ee5c

  • SHA1

    bc65389e57575b2f831280c9bf8880ae98a0709c

  • SHA256

    9a9f3f78a7288f24093c9ecdd9499b03fb660c66383d46bcba4e74b2b7cac714

  • SHA512

    136dba7818d0c3e40ab13ecc3625d72a9850fd19c83b9e20c1075e40e375e2b79b7b172ad2d3d3fc7f9355af4da1625a7bb1cc37b80bb6e81730084823e525cb

  • SSDEEP

    393216:l7MMnozGuRlM7PZiKXOqCdALhOhuo6km1YvjcMpE9BiS+mFESSbQSnHtDTLu5ZWE:l75MnIiKH8nu63pbH4OO

Score
6/10

Malware Config

Signatures

  • Blocklisted process makes network request 4 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 7 IoCs
  • Loads dropped DLL 2 IoCs
  • Modifies data under HKEY_USERS 43 IoCs
  • Suspicious use of AdjustPrivilegeToken 55 IoCs
  • Suspicious use of FindShellTrayWindow 2 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\PaintDotNet_x86.msi
    1⤵
    • Blocklisted process makes network request
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2108
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2488
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 33DFC7F451B2B151C1ADE1A7BD0F9F27
      2⤵
      • Loads dropped DLL
      PID:1560
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1772
  • C:\Windows\system32\DrvInst.exe
    DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "0000000000000570" "00000000000004AC"
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:1580

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_E6095CD2AECC9011BCD0D7B421356B17

    Filesize

    2KB

    MD5

    7f304f88a9ec859c3ec129d4d1e5f12c

    SHA1

    3bc010dc12415bb2668f775b9c7cfb780a244e07

    SHA256

    20019ca117478f5a78d4d28d39c454fc9f5d577780edba0499e752cd0fcd041d

    SHA512

    95ba947677eb171fa8af549f4452f5467153e4c727af43d2e73685b88f0b9038a3e3ee3a960501a39b39e88bc9a6fe1ae8e0d29acb4a118576eb606568e39bfa

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    67KB

    MD5

    753df6889fd7410a2e9fe333da83a429

    SHA1

    3c425f16e8267186061dd48ac1c77c122962456e

    SHA256

    b42dc237e44cbc9a43400e7d3f9cbd406dbdefd62bfe87328f8663897d69df78

    SHA512

    9d56f79410ad0cf852c74c3ef9454e7ae86e80bdd6ff67773994b48ccac71142bcf5c90635da6a056e1406e81e64674db9584928e867c55b77b59e2851cf6444

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

    Filesize

    1KB

    MD5

    169257ee1dae792fa516b7ee24fdbf6d

    SHA1

    749debd32071e052889110b6e2672ed0f7a0239f

    SHA256

    5c2d0b615f51c090e6afa909d6612573b902d06582db619452d6443463e9ab45

    SHA512

    ee0e15925c925452250c6d3a3a06c330257411d12708c98ed7ecee74792e977bb103f3572e1e585648fdd57865ef0718e601d63a70d8605fafecf1f4d4c2a16b

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\D7833C286363AD25C70511661A83D581_0074F282EF1707B4127B4440C07CA094

    Filesize

    510B

    MD5

    75bfab5db99d3a568718a5579d2ff770

    SHA1

    57e820ba6726f9b2b6c7967e6d4ca9e10e29995e

    SHA256

    028d247d354834f0802009e505ff0dc6a0b5d768ab0a9cea73508c0a0854bf7a

    SHA512

    45c4fa4d31f697a67fc8695ca802a3ac6880240e4c70a08fc1c01bae8c80dfd6037cc2e7546d2eeb3e44233de2b598a213b62ada64bfa157f78dfb65ec3aa04e

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_E6095CD2AECC9011BCD0D7B421356B17

    Filesize

    488B

    MD5

    dab39cfbd758561219be472231de0356

    SHA1

    a3cf71513329074c857eb0fbbdcff3b17675cd14

    SHA256

    7f428d3660122cba8d1f82fc27381b5c497572099c3a380b1fda91785ec105b8

    SHA512

    79ba39221917fee15026a8b815e230fccee4457854a725235adf6cc927b3aab70ff9a8b814bc59c99904c61e20e2c339df7142afd6222f30c95115d4545aa745

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    344B

    MD5

    726e3c83ec438c4925717359d2eb3d74

    SHA1

    e3e52482a92cec8d0f609995ac6fa6a286db3ff5

    SHA256

    74e3b2411d12f68930d0c7936fc22fd62721b4a6d302cd8a2a7c57397f8578de

    SHA512

    4294563f7811e1ec61d1a19c8aff988f6550dd859082470b45e7b8ede7a3b78291a8523e57e26c666d71d3f396f9aa2ff2f09bb9dde035d680319ea02e60367f

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

    Filesize

    482B

    MD5

    8d4500d5ee06c0465ef9c517554c07d2

    SHA1

    9b04fdaad8599f74a53aae1de2f91d386fe50878

    SHA256

    fde183d81092cff3181f2cc6ee1172664b45d5449cd5364b76704d168abb7d41

    SHA512

    9a9b392d757072e16f50b2fe4f70f4965a7b39b7adadef4e78a057afb3fca2e18348cce708d419ccfe82d01e92b4ca94b681693d92150fdd443e8ec5d20d7cf2

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\D7833C286363AD25C70511661A83D581_0074F282EF1707B4127B4440C07CA094

    Filesize

    484B

    MD5

    913c898631d4d615430237d91ae7d348

    SHA1

    f6004571bdd1caf5369b3f5a3e6f0647baa46895

    SHA256

    65b106920bf55493c1b5807b3d504f1024526f25ef1612c0fc46b1e6c44c9104

    SHA512

    a78e0f49149638e22556c8ae894b6ca00000aeb75c0ee5fb8c743e17107f8670fc57a1a4611c7d48f3579d89b7cc405d9625915613b801b6d23bd2fc3aabade9

  • C:\Users\Admin\AppData\Local\Temp\Tar8628.tmp

    Filesize

    175KB

    MD5

    dd73cead4b93366cf3465c8cd32e2796

    SHA1

    74546226dfe9ceb8184651e920d1dbfb432b314e

    SHA256

    a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22

    SHA512

    ce1bdd595065c94fa528badf4a6a8777893807d6789267612755df818ba6ffe55e4df429710aea29526ee4aa8ef20e25f2f05341da53992157d21ae032c0fb63

  • C:\Windows\Installer\MSIDBD0.tmp

    Filesize

    298KB

    MD5

    373e46a1e858b6a10432d589de09732f

    SHA1

    26e71b5373999a23eb6e2a282de3683dd9d698b5

    SHA256

    0357b1185454d1a7d0c72de5af8e82a2185c0f1e52fb2d21b53e149d0a688041

    SHA512

    9b83f10f5e1cbe8ff97a5ead0ca02fce5f58e6e573077d2293f5c34e8d894836dd8e2a6b1dcdfa6c98f156704208f85e8595046527adab3fbe831236c71aaef8