Analysis

  • max time kernel
    77s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-06-2023 09:09

General

  • Target

    3bcc1eb867ab61418fe7a99dcffa3734.exe

  • Size

    769KB

  • MD5

    3bcc1eb867ab61418fe7a99dcffa3734

  • SHA1

    cea3fa7f0358089e0ce7786606346d893c7be4a5

  • SHA256

    5392bfbbc84541d99563511dfa736ec514642b68292089154e0126f0e9eddf37

  • SHA512

    808350bc1ed22544ef1420398fd30db2fb2d400437b57ea1058e26bb8095c35f0167c3bce3b1369c2717187d21514cc561f3915c6ad70aa05446d05604e5c105

  • SSDEEP

    3072:Zxyod3gsuVf/LxMmKvcAznwucfxBmN9Cm55l6bNU:xiflLK0CU7hyl6S

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3bcc1eb867ab61418fe7a99dcffa3734.exe
    "C:\Users\Admin\AppData\Local\Temp\3bcc1eb867ab61418fe7a99dcffa3734.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1612
    • C:\Users\Admin\AppData\Local\Temp\ws.exe
      "C:\Users\Admin\AppData\Local\Temp\ws.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Accesses Microsoft Outlook profiles
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:4160
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\ws.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1568
        • C:\Windows\system32\chcp.com
          chcp 65001
          4⤵
            PID:2188
          • C:\Windows\system32\PING.EXE
            ping 127.0.0.1
            4⤵
            • Runs ping.exe
            PID:3512

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\ws.exe

      Filesize

      86KB

      MD5

      7c1cfd20b24b912534716c2ca03af538

      SHA1

      f374744c9c7ecff644cc9fb11a77eb10b737577d

      SHA256

      a83f50c1a41c0983d132fef61d20693e6807792534e4ab4b6ea77a32ea5c18d4

      SHA512

      9be1056e8c85376337300c71287bc2ce88c9fd8d7c02f3860054bd3db1f53eb207be9d4a6b49b25c0da46375d81bdd12a55e0ec6435a9f10e9e5e46f3a2b64e6

    • C:\Users\Admin\AppData\Local\Temp\ws.exe

      Filesize

      86KB

      MD5

      7c1cfd20b24b912534716c2ca03af538

      SHA1

      f374744c9c7ecff644cc9fb11a77eb10b737577d

      SHA256

      a83f50c1a41c0983d132fef61d20693e6807792534e4ab4b6ea77a32ea5c18d4

      SHA512

      9be1056e8c85376337300c71287bc2ce88c9fd8d7c02f3860054bd3db1f53eb207be9d4a6b49b25c0da46375d81bdd12a55e0ec6435a9f10e9e5e46f3a2b64e6

    • C:\Users\Admin\AppData\Local\Temp\ws.exe

      Filesize

      86KB

      MD5

      7c1cfd20b24b912534716c2ca03af538

      SHA1

      f374744c9c7ecff644cc9fb11a77eb10b737577d

      SHA256

      a83f50c1a41c0983d132fef61d20693e6807792534e4ab4b6ea77a32ea5c18d4

      SHA512

      9be1056e8c85376337300c71287bc2ce88c9fd8d7c02f3860054bd3db1f53eb207be9d4a6b49b25c0da46375d81bdd12a55e0ec6435a9f10e9e5e46f3a2b64e6

    • memory/1612-133-0x00000000000E0000-0x00000000001A6000-memory.dmp

      Filesize

      792KB

    • memory/4160-146-0x0000016D7D210000-0x0000016D7D22C000-memory.dmp

      Filesize

      112KB

    • memory/4160-147-0x0000016D7F700000-0x0000016D7F710000-memory.dmp

      Filesize

      64KB

    • memory/4160-148-0x0000016D7F700000-0x0000016D7F710000-memory.dmp

      Filesize

      64KB