Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    17/06/2021, 11:20

General

  • Target
    bd2a6af8244d8493a285b53102ce64ab.exe
  • Size 297KB
  • Sample210617-y1bkvv5can
  • SHA256 cce83bbb9fcc128a53c6f788a976bce242447d6c73deb097002ce9bb45b89cd0
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://999080321newfolder1002002131-service1002.space/

  • http://999080321newfolder1002002231-service1002.space/

  • http://999080321newfolder3100231-service1002.space/

  • http://999080321newfolder1002002431-service1002.space/

  • http://999080321newfolder1002002531-service1002.space/

  • http://999080321newfolder33417-012425999080321.space/

  • http://999080321test125831-service10020125999080321.space/

  • http://999080321test136831-service10020125999080321.space/

  • http://999080321test147831-service10020125999080321.space/

  • http://999080321test146831-service10020125999080321.space/

  • http://999080321test134831-service10020125999080321.space/

  • http://999080321est213531-service1002012425999080321.ru/

  • http://999080321yes1t3481-service10020125999080321.ru/

  • http://999080321test13561-service10020125999080321.su/

  • http://999080321test14781-service10020125999080321.info/

  • http://999080321test13461-service10020125999080321.net/

  • http://999080321test15671-service10020125999080321.tech/

  • http://999080321test12671-service10020125999080321.online/

  • http://999080321utest1341-service10020125999080321.ru/

  • http://999080321uest71-service100201dom25999080321.ru/

rc4.i32
rc4.i32

Extracted

Family
  • raccoon

Botnet
  • 50f8ded12c46443e43915127b1219ac2fc439bb6

Attributes
  • url4cnc

    https://tttttt.me/mimimimaxormin

rc4.plain
rc4.plain

Signatures

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine Payload 2 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • Windows security bypass 2 TTPs
  • Creates new service(s) 1 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 8 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Sets service image path in registry 2 TTPs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 11 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • 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.

  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Launches sc.exe

    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). Likely ransomware behaviour.

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Modifies data under HKEY_USERS 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bd2a6af8244d8493a285b53102ce64ab.exe
    "C:\Users\Admin\AppData\Local\Temp\bd2a6af8244d8493a285b53102ce64ab.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3904
    • C:\Users\Admin\AppData\Local\Temp\bd2a6af8244d8493a285b53102ce64ab.exe
      "C:\Users\Admin\AppData\Local\Temp\bd2a6af8244d8493a285b53102ce64ab.exe"
      2⤵
      • Loads dropped DLL
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:3480
  • C:\Users\Admin\AppData\Local\Temp\7DFF.exe
    C:\Users\Admin\AppData\Local\Temp\7DFF.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetWindowsHookEx
    PID:1228
  • C:\Users\Admin\AppData\Local\Temp\80FE.exe
    C:\Users\Admin\AppData\Local\Temp\80FE.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2104
    • C:\Users\Admin\AppData\Local\Temp\80FE.exe
      C:\Users\Admin\AppData\Local\Temp\80FE.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3588
  • C:\Users\Admin\AppData\Local\Temp\8C0B.exe
    C:\Users\Admin\AppData\Local\Temp\8C0B.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetWindowsHookEx
    PID:2080
  • C:\Users\Admin\AppData\Local\Temp\9265.exe
    C:\Users\Admin\AppData\Local\Temp\9265.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:3012
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mewksncc\
      2⤵
        PID:1192
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ptewahio.exe" C:\Windows\SysWOW64\mewksncc\
        2⤵
          PID:3860
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create mewksncc binPath= "C:\Windows\SysWOW64\mewksncc\ptewahio.exe /d\"C:\Users\Admin\AppData\Local\Temp\9265.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:2744
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description mewksncc "wifi internet conection"
            2⤵
              PID:3952
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start mewksncc
              2⤵
                PID:1008
              • C:\Windows\SysWOW64\netsh.exe
                "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
                2⤵
                  PID:2988
              • C:\Users\Admin\AppData\Local\Temp\9D24.exe
                C:\Users\Admin\AppData\Local\Temp\9D24.exe
                1⤵
                • Executes dropped EXE
                • Loads dropped DLL
                PID:3564
                • C:\Windows\SysWOW64\cmd.exe
                  cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\9D24.exe"
                  2⤵
                    PID:3012
                    • C:\Windows\SysWOW64\timeout.exe
                      timeout /T 10 /NOBREAK
                      3⤵
                      • Delays execution with timeout.exe
                      PID:3172
                • C:\Windows\SysWOW64\mewksncc\ptewahio.exe
                  C:\Windows\SysWOW64\mewksncc\ptewahio.exe /d"C:\Users\Admin\AppData\Local\Temp\9265.exe"
                  1⤵
                  • Executes dropped EXE
                  • Suspicious use of SetThreadContext
                  PID:3928
                  • C:\Windows\SysWOW64\svchost.exe
                    svchost.exe
                    2⤵
                    • Drops file in System32 directory
                    • Modifies data under HKEY_USERS
                    PID:3576
                • C:\Users\Admin\AppData\Local\Temp\B33D.exe
                  C:\Users\Admin\AppData\Local\Temp\B33D.exe
                  1⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  PID:3972
                • C:\Windows\SysWOW64\explorer.exe
                  C:\Windows\SysWOW64\explorer.exe
                  1⤵
                    PID:2980
                  • C:\Windows\explorer.exe
                    C:\Windows\explorer.exe
                    1⤵
                      PID:2712
                    • C:\Windows\SysWOW64\explorer.exe
                      C:\Windows\SysWOW64\explorer.exe
                      1⤵
                        PID:2320
                      • C:\Windows\explorer.exe
                        C:\Windows\explorer.exe
                        1⤵
                          PID:3848
                        • C:\Windows\SysWOW64\explorer.exe
                          C:\Windows\SysWOW64\explorer.exe
                          1⤵
                            PID:2396
                          • C:\Windows\explorer.exe
                            C:\Windows\explorer.exe
                            1⤵
                              PID:3608
                            • C:\Windows\SysWOW64\explorer.exe
                              C:\Windows\SysWOW64\explorer.exe
                              1⤵
                                PID:204
                              • C:\Windows\explorer.exe
                                C:\Windows\explorer.exe
                                1⤵
                                  PID:3884
                                • C:\Windows\SysWOW64\explorer.exe
                                  C:\Windows\SysWOW64\explorer.exe
                                  1⤵
                                    PID:1228

                                  Network

                                        MITRE ATT&CK Enterprise v6

                                        Replay Monitor

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                                        Downloads

                                        memory/204-210-0x0000000002BA0000-0x0000000002BA9000-memory.dmp

                                        memory/204-209-0x0000000002BB0000-0x0000000002BB4000-memory.dmp

                                        memory/1228-221-0x0000000003230000-0x0000000003239000-memory.dmp

                                        memory/1228-220-0x0000000003240000-0x0000000003245000-memory.dmp

                                        memory/2104-128-0x0000000000510000-0x0000000000511000-memory.dmp

                                        memory/2104-130-0x0000000004EB0000-0x0000000004EB1000-memory.dmp

                                        memory/2320-187-0x00000000028A0000-0x00000000028AB000-memory.dmp

                                        memory/2320-186-0x00000000028B0000-0x00000000028B7000-memory.dmp

                                        memory/2396-198-0x0000000002E30000-0x0000000002E35000-memory.dmp

                                        memory/2396-199-0x0000000002E20000-0x0000000002E29000-memory.dmp

                                        memory/2712-179-0x0000000000D20000-0x0000000000D27000-memory.dmp

                                        memory/2712-180-0x0000000000D10000-0x0000000000D1C000-memory.dmp

                                        memory/2980-176-0x0000000002910000-0x0000000002984000-memory.dmp

                                        memory/2980-177-0x00000000028A0000-0x000000000290B000-memory.dmp

                                        memory/2996-119-0x00000000008E0000-0x00000000008F7000-memory.dmp

                                        memory/3012-155-0x00000000008F0000-0x000000000099E000-memory.dmp

                                        memory/3012-156-0x0000000000400000-0x00000000008EA000-memory.dmp

                                        memory/3480-114-0x0000000000400000-0x000000000040C000-memory.dmp

                                        memory/3564-173-0x0000000000400000-0x000000000092C000-memory.dmp

                                        memory/3564-172-0x0000000002590000-0x0000000002621000-memory.dmp

                                        memory/3576-224-0x0000000000FF0000-0x0000000000FF6000-memory.dmp

                                        memory/3576-222-0x0000000005050000-0x000000000525F000-memory.dmp

                                        memory/3576-189-0x0000000000F30000-0x0000000000F45000-memory.dmp

                                        memory/3588-144-0x0000000004D80000-0x0000000004D81000-memory.dmp

                                        memory/3588-143-0x0000000004D20000-0x0000000004D21000-memory.dmp

                                        memory/3588-170-0x00000000067C0000-0x00000000067C1000-memory.dmp

                                        memory/3588-163-0x0000000007300000-0x0000000007301000-memory.dmp

                                        memory/3588-136-0x0000000000400000-0x000000000041E000-memory.dmp

                                        memory/3588-162-0x00000000068D0000-0x00000000068D1000-memory.dmp

                                        memory/3588-161-0x00000000061D0000-0x00000000061D1000-memory.dmp

                                        memory/3588-142-0x0000000005430000-0x0000000005431000-memory.dmp

                                        memory/3588-145-0x0000000004DC0000-0x0000000004DC1000-memory.dmp

                                        memory/3588-149-0x0000000005030000-0x0000000005031000-memory.dmp

                                        memory/3588-150-0x0000000004E10000-0x0000000004E11000-memory.dmp

                                        memory/3588-164-0x00000000064B0000-0x00000000064B1000-memory.dmp

                                        memory/3608-206-0x0000000000160000-0x0000000000166000-memory.dmp

                                        memory/3608-207-0x0000000000150000-0x000000000015C000-memory.dmp

                                        memory/3848-196-0x0000000000F50000-0x0000000000F5F000-memory.dmp

                                        memory/3848-194-0x0000000000F60000-0x0000000000F69000-memory.dmp

                                        memory/3884-215-0x0000000000EC0000-0x0000000000EC5000-memory.dmp

                                        memory/3884-217-0x0000000000EB0000-0x0000000000EB9000-memory.dmp

                                        memory/3904-117-0x00000000008F0000-0x000000000099E000-memory.dmp

                                        memory/3928-200-0x0000000000400000-0x00000000008EA000-memory.dmp

                                        memory/3928-197-0x00000000008F0000-0x0000000000A3A000-memory.dmp

                                        memory/3972-204-0x00000000009C0000-0x0000000000B0A000-memory.dmp

                                        memory/3972-205-0x0000000000400000-0x000000000092C000-memory.dmp