Analysis

  • max time kernel
    122s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    08-03-2024 13:26

General

  • Target

    08032024_2125_cisa.msi

  • Size

    1.5MB

  • MD5

    c4e8f3e02fd50a4051f11048f1355726

  • SHA1

    c82bf39c9f4797f346447aecc1070fb8c892010f

  • SHA256

    3a950d7e6736f17c3df90844c76d934dc66c17ec76841a4ad58de07af7955f0f

  • SHA512

    e44d8330c4ffdae01614ed5d11c2f112cff9b39bae793242f983d039e1404d371a2697a77fa65b740e43548ab1b203607a6d82b05ff3df741be02bd99a136592

  • SSDEEP

    24576:QjGxLNvYLSMvZCFlp8zBQSc0ZoCvqKwx0ECIgYmfLVYeBZr7A0r7Jh3OnJ3qXIoj:QjivYpW8zBQSc0ZnSKeZKumZr7A+D3O2

Score
6/10

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 11 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 10 IoCs
  • Modifies data under HKEY_USERS 43 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 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:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\08032024_2125_cisa.msi
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2012
  • 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:2244
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 241BD08186DD81F803D912515E4E4603 C
      2⤵
      • Loads dropped DLL
      PID:2904
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding ADC02E3A2729DB28DB333CF3C163A77D
      2⤵
      • Loads dropped DLL
      PID:1964
    • C:\Windows\Installer\MSIB1B6.tmp
      "C:\Windows\Installer\MSIB1B6.tmp" C:\Windows\System32\rundll32.exe C:\Users\Admin\AppData\Local\stat\falcon.dll, vgml
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:2472
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
      PID:2648
    • C:\Windows\system32\DrvInst.exe
      DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000003C8" "0000000000000068"
      1⤵
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      PID:1988
    • C:\Windows\System32\rundll32.exe
      "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\stat\falcon.dll, vgml
      1⤵
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      PID:2776

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Config.Msi\f76adaf.rbs

      Filesize

      1KB

      MD5

      805d2af32d4c8611ffc879d0122668c5

      SHA1

      ff523a77dbe31a544e04a38b29993a77717b97b8

      SHA256

      1ad95947d15babe4ff119a9899a5ddc514b975d4a9e7393e4551d8762ba654ba

      SHA512

      18990af0d1ebcdfab5c310ebc6f2deb4efa790466e590619cb2ee43dd8a11bfa2e8dd58a4c73c8a81abdca250c11dd0bae0a9b869e94933c7593306f6c7f3b4a

    • C:\Users\Admin\AppData\Local\Temp\MSI6097.tmp

      Filesize

      436KB

      MD5

      475d20c0ea477a35660e3f67ecf0a1df

      SHA1

      67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

      SHA256

      426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

      SHA512

      99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

    • C:\Users\Admin\AppData\Local\Temp\MSI629B.tmp

      Filesize

      354KB

      MD5

      120505f6f008e0181c8aac6d04d6145d

      SHA1

      cace7032ca0b3945dc3f0e7bf6e135529415c8e6

      SHA256

      15b28442546c0abe4c3bc5ddcc5e809148d73028f6235abc02ce7ab90522348a

      SHA512

      8d0b142982682f552393d647c5327578983cdc6cb0e900e204859ac4eebcc2c25545bc0461edc1a74c0ad0abe2b1b648a55456a071213492c99309b2871e590a

    • C:\Users\Admin\AppData\Local\stat\falcon.dll

      Filesize

      694KB

      MD5

      da8ae8e1de522b20a462239c6893613e

      SHA1

      7f65ef885815d81d220f9f42877ff0d696b0134c

      SHA256

      aee22a35cbdac3f16c3ed742c0b1bfe9739a13469cf43b36fb2c63565111028c

      SHA512

      d2dca9ba9272a0bdfa88f7520545e21a1f4d18dcacec36b072369cee8e28ba635a0214b47caef74b6f7fcd06e120d898da997e71c8955c72510972c66d2a855d

    • C:\Windows\Installer\MSIB1B6.tmp

      Filesize

      389KB

      MD5

      b9545ed17695a32face8c3408a6a3553

      SHA1

      f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83

      SHA256

      1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a

      SHA512

      f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04

    • memory/2472-37-0x0000000000160000-0x0000000000162000-memory.dmp

      Filesize

      8KB

    • memory/2776-43-0x0000000000120000-0x0000000000134000-memory.dmp

      Filesize

      80KB

    • memory/2776-55-0x0000000000120000-0x0000000000134000-memory.dmp

      Filesize

      80KB