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
    599s
  • max time network
    600s
  • 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 22 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 12 IoCs
  • Suspicious use of WriteProcessMemory 34 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:2320
    • 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:2184
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:1036
        • C:\Windows\system32\PING.EXE
          ping 127.0.0.1
          3⤵
          • Runs ping.exe
          PID:3928
        • 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:1300
        • 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:908
          • C:\Windows\System32\tar.exe
            "C:\Windows\System32\tar.exe" -xvzf "C:\Users\Admin\AppData\Local\Temp\tmp6C56.tmp" -C "C:\Users\Admin\AppData\Local\xdh16uwiax"
            4⤵
              PID:3736
            • 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:3068
      • 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:4564
        • 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:4832
      • 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:412
        • 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:904
      • 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:2072
        • 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:2336
      • 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:4368
        • 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:4208
      • 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:4888
        • 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:1948
      • 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:1860
        • 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:4960
      • 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:2892
        • 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:3576
      • 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:3108
        • 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:1380
      • 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:3348
        • 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:2472
      • 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:3400
        • 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:2996

      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\tmp6C56.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

        9.3MB

        MD5

        60ba530851eb4e7fc50f0d93f56463b5

        SHA1

        0f301a85eeae17b1de547777e8a34e9cfa32dec5

        SHA256

        5fbc8d50103eed250e69ba69a769f3acb204fe7e3f5307211a236e9572f171da

        SHA512

        be93eb6691773860e97257763bc92397d3c8bf18ae8110f96c62796a056fc8c309a2cb30afe73e41fcc6988fee140fd09b87999b5e7e8949854033d542af716a

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

        Filesize

        64B

        MD5

        f0aaaeea0d0eb6d31c44a09456ea4ce8

        SHA1

        ea50ca653f80905834c96b34825d533b926b5b6f

        SHA256

        257144cd78279427fd421ca04440c68838eac7744b0dd0ba44d0fe93548018b6

        SHA512

        8a8020f816565f5265826875d245121b985ca1beff3d12f5628dc7e414ba052765b6f58e9294bec08214c345db6d1b7794d4af989de056be2cee1a76cd7a3c61

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

        Filesize

        4B

        MD5

        40173ea48d9567f1f393b20c855bb40b

        SHA1

        a9009019ed3887cb9e7fe24aaa5e72cc20af81a4

        SHA256

        327e892542e0f4097f90d914962a75ddbe9cb0577007d7b7d45dea310086bb97

        SHA512

        68c67e61a482ac7f54143004f8b565d068d9412211baa1674eef872ec5ab25e1170ce397fc9486c08fd447569240695507427aeec68f1e3b3ca6b1249e9f770c

      • 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

        f3925a88781943e88d7fcee062ad47c0

        SHA1

        84562543d78f5fa47238967a443a99d9e52526d0

        SHA256

        e154b505869f6583c854e77eceb377255ca1095413ce8dedb0a75facde435b5f

        SHA512

        11cbdc90dd97b09420306828114b567b4a7be4b1066c95e446b2c535987724084d52b091f4bc90614ac36b89bf403e7d4a040d13bfffd4fcdc86ff50c4893103

      • memory/412-88-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/412-85-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/412-86-0x000001EF6CEF0000-0x000001EF6CF00000-memory.dmp

        Filesize

        64KB

      • memory/908-60-0x0000023CD7D20000-0x0000023CD7D30000-memory.dmp

        Filesize

        64KB

      • memory/908-11-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/908-55-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/908-12-0x0000023CD7D20000-0x0000023CD7D30000-memory.dmp

        Filesize

        64KB

      • memory/1860-127-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/1860-129-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/2072-96-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/2072-94-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/2320-1-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/2320-6-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/2320-0-0x000002F184E00000-0x000002F184E4E000-memory.dmp

        Filesize

        312KB

      • memory/2320-2-0x000002F19F420000-0x000002F19F430000-memory.dmp

        Filesize

        64KB

      • memory/2892-135-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/2892-138-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/2892-136-0x000001F6B80D0000-0x000001F6B80E0000-memory.dmp

        Filesize

        64KB

      • memory/3108-145-0x000001B87FAB0000-0x000001B87FAC0000-memory.dmp

        Filesize

        64KB

      • memory/3108-144-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/3108-147-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/3348-157-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/3348-158-0x0000016CCC410000-0x0000016CCC420000-memory.dmp

        Filesize

        64KB

      • memory/3348-160-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/3400-171-0x000002B86BEC0000-0x000002B86BED0000-memory.dmp

        Filesize

        64KB

      • memory/3400-170-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/3400-173-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/4368-104-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/4368-102-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/4564-79-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/4564-77-0x0000019D8D770000-0x0000019D8D780000-memory.dmp

        Filesize

        64KB

      • memory/4564-75-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/4888-117-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB

      • memory/4888-115-0x0000023069C40000-0x0000023069C50000-memory.dmp

        Filesize

        64KB

      • memory/4888-114-0x00007FFD4EF90000-0x00007FFD4FA52000-memory.dmp

        Filesize

        10.8MB