Analysis

  • max time kernel
    121s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    12-12-2024 11:29

General

  • Target

    56ff7c.msi

  • Size

    1.9MB

  • MD5

    dc1dacc4a53407aebffc38ef512f52e7

  • SHA1

    737e0c4312552da152f009bdce0f9048e368fee1

  • SHA256

    60f172403738997a3e49ba5b7b247854bc45b42db5895c47d43b0b0ed86588c1

  • SHA512

    9685d5c2a48d334814599fc0f8f05dcc9af441a30d09f034030f01158648a2ffd25febfad1e4237457b1de8adb9765f005c3549624dd588f73cc738a2ed62cba

  • SSDEEP

    24576:vt9cpVDhol4Cw4o72KP8MgRhG52dt3JJCyrdEnlBj:4pRho2XN2Q8xhGQP6QdE

Malware Config

Signatures

  • Modifies file permissions 1 TTPs 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
  • Loads dropped DLL 1 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Modifies data under HKEY_USERS 43 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 53 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 27 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\56ff7c.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2872
  • 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:2312
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 89C000A4C05EBBA11C8617ADC41BDF54
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2616
      • C:\Windows\SysWOW64\ICACLS.EXE
        "C:\Windows\system32\ICACLS.EXE" "C:\Users\Admin\AppData\Local\Temp\MW-8a538403-b2b1-4ecf-a447-e6aa0289871d\." /SETINTEGRITYLEVEL (CI)(OI)HIGH
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:1792
      • C:\Windows\SysWOW64\EXPAND.EXE
        "C:\Windows\system32\EXPAND.EXE" -R files.cab -F:* files
        3⤵
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:1668
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c start msedge https://www.med.unc.edu/webguide/wp-content/uploads/sites/419/2019/07/AdobePDF.pdf
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1940
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c rd /s /q "C:\Users\Admin\AppData\Local\Temp\MW-8a538403-b2b1-4ecf-a447-e6aa0289871d\files"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1636
      • C:\Windows\SysWOW64\ICACLS.EXE
        "C:\Windows\system32\ICACLS.EXE" "C:\Users\Admin\AppData\Local\Temp\MW-8a538403-b2b1-4ecf-a447-e6aa0289871d\." /SETINTEGRITYLEVEL (CI)(OI)LOW
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2784
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1728
  • C:\Windows\system32\DrvInst.exe
    DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000003A0" "000000000000059C"
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:1612

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MW-8a538403-b2b1-4ecf-a447-e6aa0289871d\files.cab

    Filesize

    1.6MB

    MD5

    32ae8557d0880ecf9d0120578c3d4262

    SHA1

    06b7e7c8ffdbbbda50982135c5966b248d882535

    SHA256

    6f8cc33cb74cf753413e56b40aca479b6aa5a88edc02c8aa26a2b902f448f862

    SHA512

    181ebfa32f8906a9b7032b0417262b13240310e40edd76f6b45ddeb6bf3c02a083105256d0aa7b028c9c32d87b92c1add298b5e01aa38d756f2cdd386e41fa39

  • C:\Users\Admin\AppData\Local\Temp\MW-8a538403-b2b1-4ecf-a447-e6aa0289871d\msiwrapper.ini

    Filesize

    1KB

    MD5

    b74ba270fcd1953fb2095c17807c46a3

    SHA1

    c4ddd6c012e390f275bd24ca407b8943448a6741

    SHA256

    d83e3d9a05332243d4bb7efbb8879099b565d89c1d2f40f2b817b37add6be244

    SHA512

    abb6dd2b3235858514f5cc7565ba279c78f01eba7d2c08fbf94c1388393b24fc9cfb8368b0332afea222ec07a902b0bb0a7982df9869efa7069f7a476b45dfb4

  • C:\Users\Admin\AppData\Local\Temp\MW-8a538403-b2b1-4ecf-a447-e6aa0289871d\msiwrapper.ini

    Filesize

    1KB

    MD5

    1d1acf43d05d8516e52096e2bb90e472

    SHA1

    64676f28f981eff060ca5b3f35debd6db1437cae

    SHA256

    28a6360bd88cd2b2b0b2058d599145ddc097c53bff9544f5082faeb8f48771c0

    SHA512

    430c462e51b5c4930a9c7ed70d7519e0a3d8b76f243647118b63f0cc44ae68e885d0dc20b3f34ca67405c33e83341340ae77dcd2a15b7fc23847bd2472562a08

  • C:\Windows\Installer\MSIAE87.tmp

    Filesize

    208KB

    MD5

    0c8921bbcc37c6efd34faf44cf3b0cb5

    SHA1

    dcfa71246157edcd09eecaf9d4c5e360b24b3e49

    SHA256

    fd622cf73ea951a6de631063aba856487d77745dd1500adca61902b8dde56fe1

    SHA512

    ed55443e20d40cca90596f0a0542fa5ab83fe0270399adfaafd172987fb813dfd44ec0da0a58c096af3641003f830341fe259ad5bce9823f238ae63b7e11e108