Analysis

  • max time kernel
    122s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    27-07-2024 01:34

General

  • Target

    c4455930a4ee15f3a7abecc4b0dc97911baf6b65b625849bc309fda3929432b4.msi

  • Size

    1.5MB

  • MD5

    1ab7db273d2431aed5d5bab9c1847246

  • SHA1

    95393b511fad6e7017f3a7c57014004a2ebca17d

  • SHA256

    c4455930a4ee15f3a7abecc4b0dc97911baf6b65b625849bc309fda3929432b4

  • SHA512

    50add971d394ccbc31b145466ebc8611b6e030d69de0bf2475175ceedf2426f1460ca6c0d0d8ff8d216c557e03fca2788b75c80e161fcf934649cc42f9946d08

  • SSDEEP

    24576:DKxfS0jEhnJ/mhGd6NFTzqh0lhSMXlTnD55U0zjjZqKtaTakjWCtFGuUK7XgW2:DiycFTznj95U0zjjZZtmzjRGuUK75

Malware Config

Signatures

  • 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 12 IoCs
  • Loads dropped DLL 4 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.

  • Modifies data under HKEY_USERS 43 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 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\c4455930a4ee15f3a7abecc4b0dc97911baf6b65b625849bc309fda3929432b4.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2984
  • 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:620
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding A37199347DE931B1E1CF46B72E194EA5
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:1364
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:236
  • C:\Windows\system32\DrvInst.exe
    DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000002FC" "00000000000005E0"
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:2720

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Config.Msi\f775bf9.rbs

    Filesize

    995B

    MD5

    21379fb650cc9ae35643d27a8ce279ff

    SHA1

    eda18eeaf7ebab1a5aaecc907390a93645ac5043

    SHA256

    056d19c7ed0dfd7af62b8d4fc84db2e56d1035d8b554b7de00eecf298ef8aa2f

    SHA512

    40a534857815f588648f22cf132a1d3840c2710f7aec070840ec9d0d6bc83e541bd013da836d3e338b845a48fba5ed60168890996d0df0ffd70a470a77c694c4

  • C:\Users\Admin\cr.dll

    Filesize

    2.5MB

    MD5

    0e8161c93aa083c2649182ec398e5a27

    SHA1

    fa0ae74e18b45378f0c7abb1b8a080a1702e6efb

    SHA256

    522b7a28eb6cfdf01c631f6007f46cabf2578d82a3ef027cd33c69628ed2fd97

    SHA512

    03920f59200d44710d035768970f51a896601ac6bbf7543823dda81949d5e80f7c083a2cc548226d86fdf837a957ed62ac7d4d2326e5176fb83da79d8b6f5a5b

  • C:\Windows\Installer\MSI5D0E.tmp

    Filesize

    738KB

    MD5

    8e65fea37f700d948d1b67afd43b97fc

    SHA1

    823d2b30ec0372e0dc36f7983ad2de1ceda4036c

    SHA256

    20c648a2a4313b1b20da50a9b788d8a1b9637e154adae4541b65badaa40266c9

    SHA512

    07faf03685fde9c71f6bc4b3caecfe4d3c707a8bec5bce1a544f59c1f853edde8f37c019c16bffd3e8fbe5c72c0666ffe0e2dffd878744da64f47e52c7625084

  • memory/1364-27-0x0000000073B50000-0x0000000073DD5000-memory.dmp

    Filesize

    2.5MB