Analysis

  • max time kernel
    151s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    27/11/2021, 09:07

General

  • Target
    d5039ace0bf17c9f55a90224a4eb0f14.exe
  • Size 284KB
  • Sample211127-k3a3dshger
  • SHA256 0e162233b79a835f69c38cc9a5c6e19e83b48ecefce9f1e22d41b44e5150cbfc
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://nalirou70.top/

  • http://xacokuo80.top/

  • http://srtuiyhuali.at/

  • http://fufuiloirtu.com/

  • http://amogohuigotuli.at/

  • http://novohudosovu.com/

  • http://brutuilionust.com/

  • http://bubushkalioua.com/

  • http://dumuilistrati.at/

  • http://verboliatsiaeeees.com/

rc4.i32
rc4.i32
rc4.i32
rc4.i32

Extracted

Family
  • tofsee

C2
  • quadoil.ru

  • lakeflex.ru

Extracted

Family
  • redline

C2
  • 185.159.80.90:38655

Signatures

  • RedLine

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

  • RedLine Payload 5 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
  • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

  • Creates new service(s) 1 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 6 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Sets service image path in registry 2 TTPs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • 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 6 IoCs

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

  • Modifies data under HKEY_USERS 7 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 62 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d5039ace0bf17c9f55a90224a4eb0f14.exe
    "C:\Users\Admin\AppData\Local\Temp\d5039ace0bf17c9f55a90224a4eb0f14.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1620
    • C:\Users\Admin\AppData\Local\Temp\d5039ace0bf17c9f55a90224a4eb0f14.exe
      "C:\Users\Admin\AppData\Local\Temp\d5039ace0bf17c9f55a90224a4eb0f14.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:772
  • C:\Users\Admin\AppData\Local\Temp\C64B.exe
    C:\Users\Admin\AppData\Local\Temp\C64B.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:1556
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zgvyvptq\
      2⤵
        PID:684
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cpyvwbna.exe" C:\Windows\SysWOW64\zgvyvptq\
        2⤵
          PID:1260
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create zgvyvptq binPath= "C:\Windows\SysWOW64\zgvyvptq\cpyvwbna.exe /d\"C:\Users\Admin\AppData\Local\Temp\C64B.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:2020
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description zgvyvptq "wifi internet conection"
            2⤵
              PID:2028
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start zgvyvptq
              2⤵
                PID:1904
              • 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:956
              • C:\Users\Admin\AppData\Local\Temp\C9F4.exe
                C:\Users\Admin\AppData\Local\Temp\C9F4.exe
                1⤵
                • Executes dropped EXE
                • Loads dropped DLL
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:1608
                • C:\Users\Admin\AppData\Local\Temp\C9F4.exe
                  C:\Users\Admin\AppData\Local\Temp\C9F4.exe
                  2⤵
                  • Executes dropped EXE
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1612
              • C:\Users\Admin\AppData\Local\Temp\D1A3.exe
                C:\Users\Admin\AppData\Local\Temp\D1A3.exe
                1⤵
                • Executes dropped EXE
                • Checks SCSI registry key(s)
                • Suspicious behavior: MapViewOfSection
                PID:1528
              • C:\Windows\SysWOW64\zgvyvptq\cpyvwbna.exe
                C:\Windows\SysWOW64\zgvyvptq\cpyvwbna.exe /d"C:\Users\Admin\AppData\Local\Temp\C64B.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:932
                • C:\Windows\SysWOW64\svchost.exe
                  svchost.exe
                  2⤵
                  • Drops file in System32 directory
                  • Modifies data under HKEY_USERS
                  PID:1996
              • C:\Users\Admin\AppData\Local\Temp\29A3.exe
                C:\Users\Admin\AppData\Local\Temp\29A3.exe
                1⤵
                • Executes dropped EXE
                PID:1016

              Network

                    MITRE ATT&CK Enterprise v6

                    Replay Monitor

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                    Downloads

                    memory/772-58-0x0000000075C21000-0x0000000075C23000-memory.dmp

                    memory/772-56-0x0000000000400000-0x0000000000408000-memory.dmp

                    memory/932-107-0x0000000000400000-0x000000000322A000-memory.dmp

                    memory/932-101-0x00000000002AB000-0x00000000002BC000-memory.dmp

                    memory/1272-60-0x0000000002B40000-0x0000000002B56000-memory.dmp

                    memory/1272-96-0x0000000004210000-0x0000000004226000-memory.dmp

                    memory/1528-73-0x0000000000230000-0x0000000000239000-memory.dmp

                    memory/1528-75-0x0000000000400000-0x000000000042C000-memory.dmp

                    memory/1528-72-0x0000000000220000-0x0000000000229000-memory.dmp

                    memory/1556-74-0x000000000331B000-0x000000000332C000-memory.dmp

                    memory/1556-79-0x0000000000220000-0x0000000000233000-memory.dmp

                    memory/1556-80-0x0000000000400000-0x000000000322A000-memory.dmp

                    memory/1608-66-0x0000000000F60000-0x0000000000F61000-memory.dmp

                    memory/1608-71-0x0000000000F20000-0x0000000000F21000-memory.dmp

                    memory/1612-100-0x0000000004960000-0x0000000004961000-memory.dmp

                    memory/1612-85-0x0000000000400000-0x0000000000420000-memory.dmp

                    memory/1612-93-0x0000000000400000-0x0000000000420000-memory.dmp

                    memory/1612-89-0x0000000000400000-0x0000000000420000-memory.dmp

                    memory/1612-88-0x0000000000400000-0x0000000000420000-memory.dmp

                    memory/1612-87-0x0000000000400000-0x0000000000420000-memory.dmp

                    memory/1612-86-0x0000000000400000-0x0000000000420000-memory.dmp

                    memory/1620-59-0x0000000000220000-0x0000000000229000-memory.dmp

                    memory/1620-55-0x0000000001D1B000-0x0000000001D2C000-memory.dmp

                    memory/1996-103-0x0000000000080000-0x0000000000095000-memory.dmp

                    memory/1996-104-0x0000000000080000-0x0000000000095000-memory.dmp