Resubmissions

10/04/2024, 02:38

240410-c4pceacb2410

10/04/2024, 02:37

240410-c4ne4scb2310

10/04/2024, 02:37

240410-c4llhsca9910

10/04/2024, 02:37

240410-c4jf6aca9810

14/10/2023, 01:31

231014-bxezqahg8w10

Analysis

  • max time kernel
    1749s
  • max time network
    1591s
  • 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, 02:38

General

  • Target
    k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
  • Size 339KB
  • Sample240410-c4pceacb24
  • SHA256 d71329c78c704ee9cc7133761b5e738a315e7eb784e348d7743a8a7366724e9f
  • MD5 SHA1 SHA512 SSDEEP

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 31 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 32 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:320
    • 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:4412
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:1272
        • C:\Windows\system32\PING.EXE
          ping 127.0.0.1
          3⤵
          • Runs ping.exe
          PID:2656
        • 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:1720
        • 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:1596
    • 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:524
    • 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:2904
    • 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:4508
    • 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:2620
    • 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:2908
    • 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:2220
    • 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:3764
    • 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:4964
    • 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:4732
    • 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:320
    • 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:4600
    • 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:192
    • 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:4704
    • 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:3348
    • 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:2040
    • 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:3324
    • 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:4016
    • 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:4924
    • 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:2232
    • 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:3504
    • 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:4236
    • 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:5008
    • 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:4360
    • 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:3004
    • 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:4648
    • 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:4476
    • 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:1940
    • 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:3040
    • 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:4392
    • 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:2468

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe.log
          • Size 847B
          • SHA256 cae801b0499949178298c1c1a083f7c0febb971d262be9c9588437af66c76ef0
          • MD5 SHA1 SHA512

          k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe

          • Path C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
          • Size 339KB
          • SHA256 d71329c78c704ee9cc7133761b5e738a315e7eb784e348d7743a8a7366724e9f
          • MD5 SHA1 SHA512 SSDEEP

          memory/192-61-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/192-62-0x0000026EFC830000-0x0000026EFC840000-memory.dmp

          memory/192-63-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/320-6-0x00007FFE18600000-0x00007FFE18FEC000-memory.dmp

          memory/320-0-0x000001D57D1C0000-0x000001D57D21C000-memory.dmp

          memory/320-1-0x00007FFE18600000-0x00007FFE18FEC000-memory.dmp

          memory/320-4-0x000001D57F6E0000-0x000001D57F6F0000-memory.dmp

          memory/320-55-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/320-54-0x000001EDC8620000-0x000001EDC8630000-memory.dmp

          memory/320-53-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/524-16-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/524-17-0x0000021A27DB0000-0x0000021A27DC0000-memory.dmp

          memory/524-18-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/1596-20-0x000001CCBB2F0000-0x000001CCBB300000-memory.dmp

          memory/1596-11-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/1596-12-0x000001CCBB2F0000-0x000001CCBB300000-memory.dmp

          memory/1596-19-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/2040-73-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/2040-75-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/2040-74-0x0000021E573C0000-0x0000021E573D0000-memory.dmp

          memory/2220-38-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/2220-39-0x0000025AB7940000-0x0000025AB7950000-memory.dmp

          memory/2220-40-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/2232-90-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/2232-88-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/2232-89-0x0000023121970000-0x0000023121980000-memory.dmp

          memory/2620-31-0x0000029C7DF00000-0x0000029C7DF10000-memory.dmp

          memory/2620-32-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/2620-30-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/2904-24-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/2904-23-0x0000011030F50000-0x0000011030F60000-memory.dmp

          memory/2904-22-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/2908-36-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/2908-34-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/2908-35-0x000001B850420000-0x000001B850430000-memory.dmp

          memory/3324-78-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/3324-77-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/3348-70-0x0000013A79450000-0x0000013A79460000-memory.dmp

          memory/3348-71-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/3348-69-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/3504-92-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/3764-44-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/3764-42-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/3764-43-0x000001D6D3C30000-0x000001D6D3C40000-memory.dmp

          memory/4016-80-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/4016-82-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/4016-81-0x0000028553DC0000-0x0000028553DD0000-memory.dmp

          memory/4508-26-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/4508-28-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/4508-27-0x0000023D5BE40000-0x0000023D5BE50000-memory.dmp

          memory/4600-59-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/4600-58-0x000002797E8F0000-0x000002797E900000-memory.dmp

          memory/4600-57-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/4704-67-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/4704-66-0x00000211FCE00000-0x00000211FCE10000-memory.dmp

          memory/4704-65-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/4732-51-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/4732-50-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/4924-84-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/4924-85-0x0000023AE3B70000-0x0000023AE3B80000-memory.dmp

          memory/4924-86-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/4964-48-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/4964-46-0x00007FFE187D0000-0x00007FFE191BC000-memory.dmp

          memory/4964-47-0x00000226AAEF0000-0x00000226AAF00000-memory.dmp