Resubmissions

10-04-2024 02:25

240410-cwlljsbh99 10

10-04-2024 02:25

240410-cwlasafc5v 10

10-04-2024 02:25

240410-cwkn9afc5t 10

10-04-2024 02:25

240410-cwkdgsfc5s 10

14-10-2023 04:25

231014-e12vfagc2y 10

Analysis

  • max time kernel
    495s
  • max time network
    1203s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    10-04-2024 02:25

General

  • Target

    Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

  • Size

    289KB

  • MD5

    88cfc2ccc0575567122d1d233f9eb1c3

  • SHA1

    4be67d0d801197f88c14d62f4495f17e89fc471f

  • SHA256

    41505242cdbf259aada52b773daeec33d239e4aefd685ba9e406d2cf2f9871a4

  • SHA512

    a2dd9ab7a2fe2a6d596c78394f65956f3e8973940229b305e2d763be69ff9f27b1450b5e08ca57cd0886a873fb663daad20ca94d9262a6c80a582dfc5f2e42b7

  • SSDEEP

    6144:uHClm6SWPoK5Z0EwVSmRPQp+L5v9bbSUpi:uHCnZxb8hLLSUpi

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot6176004110:AAFKA5be4dMwA848HWxzYIzrzzOGIHMOJGc/sendMessage?chat_id=615133582

Signatures

  • Gurcu, WhiteSnake

    Gurcu is a malware stealer written in C#.

  • Executes dropped EXE 20 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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 6 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).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
    "C:\Users\Admin\AppData\Local\Temp\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1352
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "Xd2c386a3a6edfe99de10f6ce6b3659c4809a" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe" &&START "" "C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2600
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:4128
        • C:\Windows\system32\PING.EXE
          ping 127.0.0.1
          3⤵
          • Runs ping.exe
          PID:4216
        • C:\Windows\system32\schtasks.exe
          schtasks /create /tn "Xd2c386a3a6edfe99de10f6ce6b3659c4809a" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe" /rl HIGHEST /f
          3⤵
          • Creates scheduled task(s)
          PID:1424
        • C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
          "C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe"
          3⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2076
          • C:\Windows\System32\tar.exe
            "C:\Windows\System32\tar.exe" -xvzf "C:\Users\Admin\AppData\Local\Temp\tmp7FFD.tmp" -C "C:\Users\Admin\AppData\Local\xdh16uwiax"
            4⤵
              PID:1712
            • C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
              "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
              4⤵
              • Executes dropped EXE
              PID:2816
      • C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
        C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
        1⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2164
        • C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
          "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
          2⤵
          • Executes dropped EXE
          PID:236
      • C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
        C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
        1⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2628
        • C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
          "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
          2⤵
          • Executes dropped EXE
          PID:3860
      • C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
        C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
        1⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2452
        • C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
          "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
          2⤵
          • Executes dropped EXE
          PID:3872
      • C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
        C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
        1⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4116
        • C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
          "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
          2⤵
          • Executes dropped EXE
          PID:2648
      • C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
        C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
        1⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2620
        • C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
          "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
          2⤵
          • Executes dropped EXE
          PID:4092
      • C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
        C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
        1⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2220
        • C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
          "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
          2⤵
          • Executes dropped EXE
          PID:4996
      • C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
        C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
        1⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3272
        • C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
          "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
          2⤵
          • Executes dropped EXE
          PID:4088
      • C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
        C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
        1⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3456
        • C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
          "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
          2⤵
          • Executes dropped EXE
          PID:2316
      • C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
        C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
        1⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        • outlook_office_path
        • outlook_win_path
        PID:4508
        • C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
          "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
          2⤵
          • Executes dropped EXE
          PID:4864

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe.log

        Filesize

        847B

        MD5

        486ebddc86ea8b3e965d390d22283a23

        SHA1

        eaffc047f067084867e8575c576a9ec60e094ba8

        SHA256

        50a57273ecb794e53b0622eb841341e2643c11f53fa47356e6e754ab2268171d

        SHA512

        0a50ba02250b38355a6f4fb94e40c61258a74031d9aea7cdf675f3e068f39ec0748ecf292aaf2f94b1963b9d66516ee79aa6c552617048e248774af0ff07189d

      • C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

        Filesize

        289KB

        MD5

        88cfc2ccc0575567122d1d233f9eb1c3

        SHA1

        4be67d0d801197f88c14d62f4495f17e89fc471f

        SHA256

        41505242cdbf259aada52b773daeec33d239e4aefd685ba9e406d2cf2f9871a4

        SHA512

        a2dd9ab7a2fe2a6d596c78394f65956f3e8973940229b305e2d763be69ff9f27b1450b5e08ca57cd0886a873fb663daad20ca94d9262a6c80a582dfc5f2e42b7

      • C:\Users\Admin\AppData\Local\Temp\tmp7FFD.tmp

        Filesize

        13.3MB

        MD5

        89d2d5811c1aff539bb355f15f3ddad0

        SHA1

        5bb3577c25b6d323d927200c48cd184a3e27c873

        SHA256

        b630008f6d3887793d48b87091e56691e292894dd4fa100dc4a418a2f29dcc12

        SHA512

        39e576124c54143520c5435a2ef9b24506131e13403489c0692f09b89135015d611c4988d4772f8a1e6557fa68b4667d467334461009cee8c2227dfc3e295289

      • C:\Users\Admin\AppData\Local\xdh16uwiax\data\cached-microdesc-consensus

        Filesize

        2.7MB

        MD5

        a0db8a87f7b723266c8b04255da46b06

        SHA1

        4df00ea56d22d88f3d2e005ef66bad5b3ef92ebf

        SHA256

        60b43cdce0f807f7891521f396f53def34a7d98986dbde0faa2a197189c587f3

        SHA512

        41b8fc467d11af7ca6a42c7e94d1b8295ab3ae5d6d186b4f378e6e079440520e8324b695da1134beb2bc1697d2491edcc70c1b75ab6fc66b9c1cb2ecbcdb4a7d

      • C:\Users\Admin\AppData\Local\xdh16uwiax\data\cached-microdescs.new

        Filesize

        11.2MB

        MD5

        6900c8a72d67c97025337ba23748f726

        SHA1

        c705835e403416f9704c7535462963661a5ca2f7

        SHA256

        ff72daac9489529226bdc52cd419861baf8894f5b168929d1da4b3c6ac2505eb

        SHA512

        7fbc1febe0100aa44af993f79dd9b72eca9f99ab8662ac4f4ceeb41727cc35cb52458cb14db73b58b759774845e07920ea7ea7659dd2ed2921f657ce48c21f8c

      • C:\Users\Admin\AppData\Local\xdh16uwiax\host\hostname

        Filesize

        64B

        MD5

        fb49b8d7c3c94c0a56af363f2a790c54

        SHA1

        4321032f14369a6deef0b7a6340c8ce7fcdec301

        SHA256

        46d183df1a79d86c3fbeab6aa1ce5ec086d4c6cdd11d2b5a22bd853b887f7c23

        SHA512

        05396b3336ebde409362bacfdc447544c81bba0d6fccefbfb91cb2bef78c8deaef12687c2dd6c8ca639493f43a53493d37c55641dd626ab1283bfd6ca34cc3ae

      • C:\Users\Admin\AppData\Local\xdh16uwiax\port.dat

        Filesize

        4B

        MD5

        da54dd5a0398011cdfa50d559c2c0ef8

        SHA1

        a58dcb7f4d5593428bac0dd85c941f216c6fcd34

        SHA256

        1c189411f713fc76641d5bab3a48645db78a6f4d1120b6da57b1ae0825b726d9

        SHA512

        e9008b37f8cbbc8c29bb336878c576da596bc6d32d056584269bfebd5e1a46cc848a79bf62ab3b5f4646eaf82e2f7b74198e8509b96570c0ea21a3fba3c5de3f

      • C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe

        Filesize

        7.4MB

        MD5

        88590909765350c0d70c6c34b1f31dd2

        SHA1

        129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

        SHA256

        46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

        SHA512

        a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

      • C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt

        Filesize

        218B

        MD5

        f2a6681f26b4d4eafee7a4c9509f009a

        SHA1

        03658160ea2e14b394594d0f74826222c09cb03a

        SHA256

        373dd8a489245a3cab3efa510d07f5593a1aeec7168fb48e4bdabf9806a23338

        SHA512

        4520e6c569d464b69292cb88ba0be2a8e4cc492e15568215694805d64c914e7f296069ebe9b0a6d840403da8ddf3f1cd09d49d3932c9f59dda8525127b165539

      • memory/1352-6-0x00007FF957B10000-0x00007FF9585D2000-memory.dmp

        Filesize

        10.8MB

      • memory/1352-0-0x000001DD96910000-0x000001DD9695E000-memory.dmp

        Filesize

        312KB

      • memory/1352-2-0x000001DDB10B0000-0x000001DDB10C0000-memory.dmp

        Filesize

        64KB

      • memory/1352-1-0x00007FF957B10000-0x00007FF9585D2000-memory.dmp

        Filesize

        10.8MB

      • memory/2076-66-0x000001AC63A40000-0x000001AC63A50000-memory.dmp

        Filesize

        64KB

      • memory/2076-12-0x000001AC63A40000-0x000001AC63A50000-memory.dmp

        Filesize

        64KB

      • memory/2076-59-0x00007FF957780000-0x00007FF958242000-memory.dmp

        Filesize

        10.8MB

      • memory/2076-11-0x00007FF957780000-0x00007FF958242000-memory.dmp

        Filesize

        10.8MB

      • memory/2164-41-0x00007FF957780000-0x00007FF958242000-memory.dmp

        Filesize

        10.8MB

      • memory/2164-44-0x00007FF957780000-0x00007FF958242000-memory.dmp

        Filesize

        10.8MB

      • memory/2220-128-0x00007FF957780000-0x00007FF958242000-memory.dmp

        Filesize

        10.8MB

      • memory/2220-126-0x00007FF957780000-0x00007FF958242000-memory.dmp

        Filesize

        10.8MB

      • memory/2452-97-0x00007FF957780000-0x00007FF958242000-memory.dmp

        Filesize

        10.8MB

      • memory/2452-99-0x00007FF957780000-0x00007FF958242000-memory.dmp

        Filesize

        10.8MB

      • memory/2620-109-0x00007FF957780000-0x00007FF958242000-memory.dmp

        Filesize

        10.8MB

      • memory/2620-112-0x00007FF957780000-0x00007FF958242000-memory.dmp

        Filesize

        10.8MB

      • memory/2620-110-0x000001E0FF7D0000-0x000001E0FF7E0000-memory.dmp

        Filesize

        64KB

      • memory/2628-85-0x00000236E3BA0000-0x00000236E3BB0000-memory.dmp

        Filesize

        64KB

      • memory/2628-87-0x00007FF957780000-0x00007FF958242000-memory.dmp

        Filesize

        10.8MB

      • memory/2628-84-0x00007FF957780000-0x00007FF958242000-memory.dmp

        Filesize

        10.8MB

      • memory/3272-134-0x00007FF957780000-0x00007FF958242000-memory.dmp

        Filesize

        10.8MB

      • memory/3272-136-0x00007FF957780000-0x00007FF958242000-memory.dmp

        Filesize

        10.8MB

      • memory/3456-138-0x00007FF957780000-0x00007FF958242000-memory.dmp

        Filesize

        10.8MB

      • memory/3456-139-0x0000013D72880000-0x0000013D72890000-memory.dmp

        Filesize

        64KB

      • memory/3456-141-0x00007FF957780000-0x00007FF958242000-memory.dmp

        Filesize

        10.8MB

      • memory/4116-107-0x00007FF957780000-0x00007FF958242000-memory.dmp

        Filesize

        10.8MB

      • memory/4116-105-0x00007FF957780000-0x00007FF958242000-memory.dmp

        Filesize

        10.8MB

      • memory/4508-156-0x000001DDE9E20000-0x000001DDE9E30000-memory.dmp

        Filesize

        64KB

      • memory/4508-155-0x00007FF957780000-0x00007FF958242000-memory.dmp

        Filesize

        10.8MB