Analysis

  • max time kernel
    51s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    03/05/2022, 21:46

General

  • Target
    e5c85df9a9b6f84f76c64b41c07a4f52f16a373eae80c713765a5cf43ced3e8d.exe
  • Size 6.3MB
  • Sample220503-1mlrysfcbq
  • SHA256 e5c85df9a9b6f84f76c64b41c07a4f52f16a373eae80c713765a5cf43ced3e8d
  • MD5 SHA1 SHA512
Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 9 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e5c85df9a9b6f84f76c64b41c07a4f52f16a373eae80c713765a5cf43ced3e8d.exe
    "C:\Users\Admin\AppData\Local\Temp\e5c85df9a9b6f84f76c64b41c07a4f52f16a373eae80c713765a5cf43ced3e8d.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1464
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\DocumentSaver.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\DocumentSaver.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:928
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 928 -s 932
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:792

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        DocumentSaver.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\DocumentSaver.exe
        • Size 5.2MB
        • SHA256 710faabf217a5cd3431670558603a45edb1e01970f2a8710514c2cc3dd8c2424
        • MD5 SHA1 SHA512 SSDEEP

        DocumentSaver.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\DocumentSaver.exe
        • Size 5.2MB
        • SHA256 710faabf217a5cd3431670558603a45edb1e01970f2a8710514c2cc3dd8c2424
        • MD5 SHA1 SHA512 SSDEEP

        SQLite.Interop.dll

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\SQLite.Interop.dll
        • Size 1.7MB
        • SHA256 9309fb2a3f326d0f2cc3f2ab837cfd02e4f8cb6b923b3b2be265591fd38f4961
        • MD5 SHA1 SHA512 SSDEEP

        DocumentSaver.exe

        • Path \Users\Admin\AppData\Local\Temp\RarSFX0\DocumentSaver.exe
        • Size 5.2MB
        • SHA256 710faabf217a5cd3431670558603a45edb1e01970f2a8710514c2cc3dd8c2424
        • MD5 SHA1 SHA512 SSDEEP

        DocumentSaver.exe

        • Path \Users\Admin\AppData\Local\Temp\RarSFX0\DocumentSaver.exe
        • Size 5.2MB
        • SHA256 710faabf217a5cd3431670558603a45edb1e01970f2a8710514c2cc3dd8c2424
        • MD5 SHA1 SHA512 SSDEEP

        DocumentSaver.exe

        • Path \Users\Admin\AppData\Local\Temp\RarSFX0\DocumentSaver.exe
        • Size 5.2MB
        • SHA256 710faabf217a5cd3431670558603a45edb1e01970f2a8710514c2cc3dd8c2424
        • MD5 SHA1 SHA512 SSDEEP

        DocumentSaver.exe

        • Path \Users\Admin\AppData\Local\Temp\RarSFX0\DocumentSaver.exe
        • Size 5.2MB
        • SHA256 710faabf217a5cd3431670558603a45edb1e01970f2a8710514c2cc3dd8c2424
        • MD5 SHA1 SHA512 SSDEEP

        DocumentSaver.exe

        • Path \Users\Admin\AppData\Local\Temp\RarSFX0\DocumentSaver.exe
        • Size 5.2MB
        • SHA256 710faabf217a5cd3431670558603a45edb1e01970f2a8710514c2cc3dd8c2424
        • MD5 SHA1 SHA512 SSDEEP

        DocumentSaver.exe

        • Path \Users\Admin\AppData\Local\Temp\RarSFX0\DocumentSaver.exe
        • Size 5.2MB
        • SHA256 710faabf217a5cd3431670558603a45edb1e01970f2a8710514c2cc3dd8c2424
        • MD5 SHA1 SHA512 SSDEEP

        DocumentSaver.exe

        • Path \Users\Admin\AppData\Local\Temp\RarSFX0\DocumentSaver.exe
        • Size 5.2MB
        • SHA256 710faabf217a5cd3431670558603a45edb1e01970f2a8710514c2cc3dd8c2424
        • MD5 SHA1 SHA512 SSDEEP

        DocumentSaver.exe

        • Path \Users\Admin\AppData\Local\Temp\RarSFX0\DocumentSaver.exe
        • Size 5.2MB
        • SHA256 710faabf217a5cd3431670558603a45edb1e01970f2a8710514c2cc3dd8c2424
        • MD5 SHA1 SHA512 SSDEEP

        DocumentSaver.exe

        • Path \Users\Admin\AppData\Local\Temp\RarSFX0\DocumentSaver.exe
        • Size 5.2MB
        • SHA256 710faabf217a5cd3431670558603a45edb1e01970f2a8710514c2cc3dd8c2424
        • MD5 SHA1 SHA512 SSDEEP

        SQLite.Interop.dll

        • Path \Users\Admin\AppData\Local\Temp\RarSFX0\SQLite.Interop.dll
        • Size 1.7MB
        • SHA256 9309fb2a3f326d0f2cc3f2ab837cfd02e4f8cb6b923b3b2be265591fd38f4961
        • MD5 SHA1 SHA512 SSDEEP

        memory/928-67-0x000000001D410000-0x000000001D4C0000-memory.dmp

        memory/928-68-0x0000000020410000-0x000000002073E000-memory.dmp

        memory/928-66-0x0000000000800000-0x0000000000825000-memory.dmp

        memory/928-63-0x0000000000990000-0x00000000009F2000-memory.dmp

        memory/928-60-0x0000000001310000-0x0000000001844000-memory.dmp

        memory/1464-54-0x0000000075381000-0x0000000075383000-memory.dmp