Analysis

  • max time kernel
    143s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-01-2024 01:10

General

  • Target

    95861518ef095e5ffd16260e0a5ba1b2917fa9efaeaac75e7f5a20816a4fe35a.exe

  • Size

    1000KB

  • MD5

    f71a4c25dbdc3fd5ee21b0ab15328cc5

  • SHA1

    78eb0c54ce0127a93fc6007baeee980ff0562b45

  • SHA256

    95861518ef095e5ffd16260e0a5ba1b2917fa9efaeaac75e7f5a20816a4fe35a

  • SHA512

    61bc151952cacfdc99af9cbe450625aa2e23e498dea7b8327571a55e20a27060992b1cd7beb9bff71ded2edffc4fe73764c83220790d53a8af6274052a06eed0

  • SSDEEP

    24576:qxLsMs8WdUS8KMcXK0QVQoU/TXJBdSnIernu:usldslc9Ci/TXp

Malware Config

Signatures

  • Detects Echelon Stealer payload 2 IoCs
  • Echelon

    Echelon is a .NET stealer that targets passwords from browsers, email and cryptocurrency clients.

  • Stops running service(s) 3 TTPs
  • 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
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • 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 3 IoCs

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

  • Launches sc.exe 1 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\95861518ef095e5ffd16260e0a5ba1b2917fa9efaeaac75e7f5a20816a4fe35a.exe
    "C:\Users\Admin\AppData\Local\Temp\95861518ef095e5ffd16260e0a5ba1b2917fa9efaeaac75e7f5a20816a4fe35a.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4348
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Echelon.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Echelon.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:4404
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c sc stop "MpsSvc"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4264
        • C:\Windows\system32\sc.exe
          sc stop "MpsSvc"
          4⤵
          • Launches sc.exe
          PID:628
  • C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
    1⤵
      PID:4532
    • C:\Windows\System32\svchost.exe
      C:\Windows\System32\svchost.exe -k UnistackSvcGroup
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4896

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\DotNetZip.dll

      Filesize

      448KB

      MD5

      60caabbd43235889d64f230617c0e24e

      SHA1

      f5f922bd3c69591663187d40ad732c73a5bda290

      SHA256

      4d7851bb977d7bd1d7503e994bc4c4083faa2751f41624237309157b1b88681d

      SHA512

      fedccb31b488ec1b7b28e8614a3eb53eb130c176837f687395e61a0f3f522d742d46ece1f6852ca45e831abe21728e08dadf010d828a49fbfdc9840b42cc975c

    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Echelon.exe

      Filesize

      592KB

      MD5

      52c389a5c951fa6b0c5636ece3b9a4cc

      SHA1

      7ea98e6dc3113e1bb7a89a4b8c3f29f770163b68

      SHA256

      8b7240910326218e895b469398b4e98443ba8aba78e17270659050fb7562f930

      SHA512

      6bdbd1dfd21f7db0682972502e632fa006843db79c46265e8199c75f69458ecf6506c3c5b8424d465d004483897056739e2edb73b821205b48a0d7fb6b48f38d

    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Echelon.exe.config

      Filesize

      216B

      MD5

      ed6192054a346a72d8bd4352895f25f9

      SHA1

      2de8e2859eb7451eb23d408cf9fa45f37a4e2d0e

      SHA256

      707f233f9e814e64d7655a78275e60bb44c35646292fa5b41ee936e1763c9f77

      SHA512

      7fe3851b67da2cd748c5e194e7b0c8252c65516ac710d950e5d6ac3aefe7051a5a01e034d6714f1dba077046ec211d234eb9f19e05c80d292b24e0f84dd6ce0f

    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Echelon.pdb

      Filesize

      465KB

      MD5

      7eb1ff59d8695aafd0ce4d16db69b3c5

      SHA1

      b9be9d9046571261e90f837a3dbeed8b55810740

      SHA256

      f137fdf94917ca89993d845de108300fece885c8a27ce856feff355fedf21651

      SHA512

      5a619f0effae27f2b2320d908a950e2c72a93e2a1991ac727d7f0a08f7399c2e44f8c3f6a19a0e649d24f9b091583aa9773393756a1cf8cb9d5c5ef46ffdb5e3

    • memory/4404-25-0x000001CEF5810000-0x000001CEF5820000-memory.dmp

      Filesize

      64KB

    • memory/4404-27-0x000001CEF5CB0000-0x000001CEF5D26000-memory.dmp

      Filesize

      472KB

    • memory/4404-24-0x00007FFDB2470000-0x00007FFDB2F31000-memory.dmp

      Filesize

      10.8MB

    • memory/4404-28-0x000001CEF5850000-0x000001CEF5A47000-memory.dmp

      Filesize

      2.0MB

    • memory/4404-23-0x000001CEF3180000-0x000001CEF321A000-memory.dmp

      Filesize

      616KB

    • memory/4404-61-0x00007FFDB2470000-0x00007FFDB2F31000-memory.dmp

      Filesize

      10.8MB

    • memory/4896-64-0x000001BF16750000-0x000001BF16760000-memory.dmp

      Filesize

      64KB

    • memory/4896-80-0x000001BF16850000-0x000001BF16860000-memory.dmp

      Filesize

      64KB

    • memory/4896-96-0x000001BF1EBC0000-0x000001BF1EBC1000-memory.dmp

      Filesize

      4KB

    • memory/4896-98-0x000001BF1EBF0000-0x000001BF1EBF1000-memory.dmp

      Filesize

      4KB

    • memory/4896-99-0x000001BF1EBF0000-0x000001BF1EBF1000-memory.dmp

      Filesize

      4KB

    • memory/4896-100-0x000001BF1ED00000-0x000001BF1ED01000-memory.dmp

      Filesize

      4KB