Analysis

  • max time kernel
    68s
  • max time network
    43s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    13/08/2024, 22:24

General

  • Target
    vcredist2005_x64.exe
  • Size 3.1MB
  • Sample240813-2bm2bazapb
  • SHA256 b1cbcde3791e0b1c6df3def43d8c05035c60fe2f6a2d8ba091abb4509fb43ef1
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 5 IoCs
  • Adds Run key to start application 2 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 Program Files directory 1 IoCs
  • Drops file in Windows directory 59 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 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 46 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 21 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\vcredist2005_x64.exe
    "C:\Users\Admin\AppData\Local\Temp\vcredist2005_x64.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2780
    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\VCREDI~2.EXE
      C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\VCREDI~2.EXE
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3008
      • C:\Windows\SysWOW64\msiexec.exe
        msiexec /i vcredist.msi
        3⤵
        • Enumerates connected drives
        • Event Triggered Execution: Installer Packages
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        PID:2888
  • 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:2716
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 91B2246385F105DCCF478E815DAD5759
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:608
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2260
  • C:\Windows\system32\DrvInst.exe
    DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "0000000000000060" "00000000000003DC"
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:3016

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 342B
        • SHA256 0ec047b116d6c46d11720bbb0ce6f687686256d0e04b6599a74028d49fb47874
        • MD5 SHA1 SHA512

        Cab129.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\Cab129.tmp
        • Size 70KB
        • SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
        • MD5 SHA1 SHA512 SSDEEP

        vcredis1.cab

        • Path C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\vcredis1.cab
        • Size 312KB
        • SHA256 64570910e03c337d4e1f8ab1b9fb8e4dc46fdccb93857a1e9c73b296c6850fe0
        • MD5 SHA1 SHA512 SSDEEP

        vcredist.msi

        • Path C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\vcredist.msi
        • Size 3.0MB
        • SHA256 a9a8dac04e3b38c2f8d33ee7cf6d658fa4ea089bbf9f4014eb61b9d5de7dc6a2
        • MD5 SHA1 SHA512 SSDEEP

        MSI34D.tmp

        • Path C:\Windows\Installer\MSI34D.tmp
        • Size 28KB
        • SHA256 f6e34a4550e499346f5ab1d245508f16bf765ff24c4988984b89e049ca55737f
        • MD5 SHA1 SHA512 SSDEEP

        VCREDI~2.EXE

        • Path \Users\Admin\AppData\Local\Temp\IXP000.TMP\VCREDI~2.EXE
        • Size 3.0MB
        • SHA256 bfc68a9e609ee8a850c21be8c459b99f09e34309b8113e43b12be7a27f0b445a
        • MD5 SHA1 SHA512 SSDEEP