Resubmissions

10-04-2024 02:38

240410-c4pceacb24 10

10-04-2024 02:37

240410-c4ne4scb23 10

10-04-2024 02:37

240410-c4llhsca99 10

10-04-2024 02:37

240410-c4jf6aca98 10

14-10-2023 01:31

231014-bxezqahg8w 10

Analysis

  • max time kernel
    1144s
  • max time network
    1114s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    10-04-2024 02:37

General

  • Target

    k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe

  • Size

    339KB

  • MD5

    1cab66a5c15f97f040fb23d354d04a9c

  • SHA1

    f0dbebd22b2c7bfedbefa4435b345c58416f9448

  • SHA256

    d71329c78c704ee9cc7133761b5e738a315e7eb784e348d7743a8a7366724e9f

  • SHA512

    a5508a75a0a7c747cc50fe8284b9097e1cb9ae83bd7e80553ffa875a6d07d6eec7fc18f66a0a328aa0614c26642d884bfe152e6c09a11eeb0d64f6be66064eab

  • SSDEEP

    3072:gdrpN/JlLKd5hkad0lk0vGJGMlngDBXrkhamyeFykt9sxc8eTRLUvenjLM/zNlgl:0UGPUvva+lxXY6uXAJMI9bAV0D

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot6193093056:AAHzyNGUGS9aUG6CCx6ENLoXpCFLzEQywIQ/sendMessage?chat_id=1098292643

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 3 IoCs
  • 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 use of AdjustPrivilegeToken 20 IoCs
  • Suspicious use of WriteProcessMemory 10 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\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
    "C:\Users\Admin\AppData\Local\Temp\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3612
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "k2fef4820980d3c2c1f2cce2f95e94f5e1c18" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe" &&START "" "C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3288
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:220
        • C:\Windows\system32\PING.EXE
          ping 127.0.0.1
          3⤵
          • Runs ping.exe
          PID:3648
        • C:\Windows\system32\schtasks.exe
          schtasks /create /tn "k2fef4820980d3c2c1f2cce2f95e94f5e1c18" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe" /rl HIGHEST /f
          3⤵
          • Creates scheduled task(s)
          PID:5056
        • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
          "C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe"
          3⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Suspicious use of AdjustPrivilegeToken
          • outlook_office_path
          • outlook_win_path
          PID:208
    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2768
    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2624
    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      1⤵
      • Executes dropped EXE
      PID:4944
    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3184
    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4272
    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4148
    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1044
    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4696
    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4532
    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:400
    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2160
    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3480
    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2848
    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1028
    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1516
    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3184
    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:700
    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1344
    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1928

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe.log

      Filesize

      847B

      MD5

      a908a7c6e93edeb3e400780b6fe62dde

      SHA1

      36e2b437f41443f6b41b45b35a0f97b2cd94123d

      SHA256

      cae801b0499949178298c1c1a083f7c0febb971d262be9c9588437af66c76ef0

      SHA512

      deb437dcb1440d37bcd61dfa43be05fd01856a1d1e59aa5b2dfa142e9ae584b0577eea024edb99d8e74e3a1b606bb7ae3b4f9cd8eb30813e67dda678b9319cbe

    • C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe

      Filesize

      339KB

      MD5

      1cab66a5c15f97f040fb23d354d04a9c

      SHA1

      f0dbebd22b2c7bfedbefa4435b345c58416f9448

      SHA256

      d71329c78c704ee9cc7133761b5e738a315e7eb784e348d7743a8a7366724e9f

      SHA512

      a5508a75a0a7c747cc50fe8284b9097e1cb9ae83bd7e80553ffa875a6d07d6eec7fc18f66a0a328aa0614c26642d884bfe152e6c09a11eeb0d64f6be66064eab

    • memory/208-16-0x000001C7F9C00000-0x000001C7F9C10000-memory.dmp

      Filesize

      64KB

    • memory/208-11-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/208-12-0x000001C7F9C00000-0x000001C7F9C10000-memory.dmp

      Filesize

      64KB

    • memory/208-15-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/400-48-0x000002BD77E70000-0x000002BD77E80000-memory.dmp

      Filesize

      64KB

    • memory/400-49-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/400-47-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/700-75-0x000001D0745E0000-0x000001D0745F0000-memory.dmp

      Filesize

      64KB

    • memory/700-76-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/700-74-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/1028-64-0x000001FD4AF00000-0x000001FD4AF10000-memory.dmp

      Filesize

      64KB

    • memory/1028-65-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/1028-63-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/1044-37-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/1044-39-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/1044-38-0x0000028803D60000-0x0000028803D70000-memory.dmp

      Filesize

      64KB

    • memory/1344-78-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/1344-80-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/1344-79-0x000001A0F56A0000-0x000001A0F56B0000-memory.dmp

      Filesize

      64KB

    • memory/1516-68-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/1516-67-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/1928-82-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/1928-83-0x0000018BAB4B0000-0x0000018BAB4C0000-memory.dmp

      Filesize

      64KB

    • memory/1928-84-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/2160-52-0x0000018DE1550000-0x0000018DE1560000-memory.dmp

      Filesize

      64KB

    • memory/2160-53-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/2160-51-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/2624-23-0x0000029E531F0000-0x0000029E53200000-memory.dmp

      Filesize

      64KB

    • memory/2624-22-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/2624-24-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/2768-18-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/2768-19-0x00000218469E0000-0x00000218469F0000-memory.dmp

      Filesize

      64KB

    • memory/2768-20-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/2848-59-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/2848-61-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/2848-60-0x000002773B220000-0x000002773B230000-memory.dmp

      Filesize

      64KB

    • memory/3184-72-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/3184-27-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/3184-71-0x000001E6FFC40000-0x000001E6FFC50000-memory.dmp

      Filesize

      64KB

    • memory/3184-70-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/3184-28-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/3480-57-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/3480-56-0x00000275F0430000-0x00000275F0440000-memory.dmp

      Filesize

      64KB

    • memory/3480-55-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/3612-0-0x000002040BCE0000-0x000002040BD3C000-memory.dmp

      Filesize

      368KB

    • memory/3612-6-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/3612-4-0x000002040C150000-0x000002040C160000-memory.dmp

      Filesize

      64KB

    • memory/3612-1-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/4148-34-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/4148-35-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/4272-30-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/4272-31-0x00000260FB280000-0x00000260FB290000-memory.dmp

      Filesize

      64KB

    • memory/4272-32-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/4532-45-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/4532-44-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/4696-41-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB

    • memory/4696-42-0x00007FF9AA530000-0x00007FF9AAF1C000-memory.dmp

      Filesize

      9.9MB