Analysis

  • max time kernel
    150s
  • max time network
    160s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    10/08/2021, 07:40

General

  • Target
    cbbfe74029e6eb81ccc66d728428b328.exe
  • Size 596KB
  • Sample210810-95txzhd6mn
  • SHA256 e40c1359fa0e86c65f50363b88e29a7d4d24990195cc766273203c496393ebe4
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • cryptbot

C2
  • lysvay12.top

  • moroer01.top

Attributes
  • payload_url

    http://damuxa01.top/download.php?file=lv.exe

Signatures

  • CryptBot

    A C++ stealer distributed widely in bundle with other software.

  • CryptBot Payload 2 IoCs
  • Danabot

    Danabot is a modular banking Trojan that has been linked with other malware.

  • Danabot Loader Component 7 IoCs
  • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

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

  • Blocklisted process makes network request 5 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 7 IoCs
  • Drops startup file 1 IoCs
  • Loads dropped DLL 5 IoCs
  • 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
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in Program Files directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 24 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Modifies registry class 1 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cbbfe74029e6eb81ccc66d728428b328.exe
    "C:\Users\Admin\AppData\Local\Temp\cbbfe74029e6eb81ccc66d728428b328.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:3128
    • C:\Users\Admin\AppData\Local\Temp\Filett.exe
      "C:\Users\Admin\AppData\Local\Temp\Filett.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:3804
      • C:\Users\Admin\AppData\Local\Temp\namoi\vn.exe
        "C:\Users\Admin\AppData\Local\Temp\namoi\vn.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of WriteProcessMemory
        PID:1320
        • C:\Windows\SysWOW64\dllhost.exe
          dllhost.exe
          4⤵
            PID:484
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c cmd < Ritorni.docm
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:1292
            • C:\Windows\SysWOW64\cmd.exe
              cmd
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:2008
              • C:\Windows\SysWOW64\findstr.exe
                findstr /V /R "^LodkRlBSRrPGkJmvfGWoQmKxYYFITWniLRlmgrMsXQEOYkwWHltAFiajnWhTFSYVFIVzmZojUEkZUVvMWJqISXBDmYw$" Esistenza.docm
                6⤵
                  PID:2416
                • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Voto.exe.com
                  Voto.exe.com f
                  6⤵
                  • Executes dropped EXE
                  • Suspicious use of WriteProcessMemory
                  PID:2180
                  • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Voto.exe.com
                    C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Voto.exe.com f
                    7⤵
                    • Executes dropped EXE
                    • Checks processor information in registry
                    • Modifies registry class
                    • Suspicious use of WriteProcessMemory
                    PID:1732
                    • C:\Users\Admin\AppData\Local\Temp\rsnpwtklldp.exe
                      "C:\Users\Admin\AppData\Local\Temp\rsnpwtklldp.exe"
                      8⤵
                      • Executes dropped EXE
                      • Suspicious use of WriteProcessMemory
                      PID:3540
                      • C:\Windows\SysWOW64\rundll32.exe
                        C:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\RSNPWT~1.TMP,S C:\Users\Admin\AppData\Local\Temp\RSNPWT~1.EXE
                        9⤵
                        • Blocklisted process makes network request
                        • Loads dropped DLL
                        • Drops file in Program Files directory
                        • Suspicious use of WriteProcessMemory
                        PID:2100
                        • C:\Windows\SysWOW64\RUNDLL32.EXE
                          C:\Windows\system32\RUNDLL32.EXE C:\Users\Admin\AppData\Local\Temp\RSNPWT~1.TMP,algSTTlXM1d1
                          10⤵
                          • Loads dropped DLL
                          • Checks processor information in registry
                          PID:3844
                    • C:\Windows\SysWOW64\WScript.exe
                      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\mjduqofwrun.vbs"
                      8⤵
                        PID:1240
                      • C:\Windows\SysWOW64\WScript.exe
                        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\btuanloy.vbs"
                        8⤵
                        • Blocklisted process makes network request
                        • Modifies system certificate store
                        PID:1312
                  • C:\Windows\SysWOW64\PING.EXE
                    ping localhost -n 30
                    6⤵
                    • Runs ping.exe
                    PID:1628
            • C:\Users\Admin\AppData\Local\Temp\namoi\four.exe
              "C:\Users\Admin\AppData\Local\Temp\namoi\four.exe"
              3⤵
              • Executes dropped EXE
              • Drops startup file
              • Suspicious use of WriteProcessMemory
              PID:2068
              • C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe
                "C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe"
                4⤵
                • Executes dropped EXE
                • Suspicious behavior: AddClipboardFormatListener
                PID:628
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\KJZ1CtUF & timeout 2 & del /f /q "C:\Users\Admin\AppData\Local\Temp\cbbfe74029e6eb81ccc66d728428b328.exe"
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:496
            • C:\Windows\SysWOW64\timeout.exe
              timeout 2
              3⤵
              • Delays execution with timeout.exe
              PID:3732

        Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

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              Downloads

              memory/628-155-0x0000000002C80000-0x0000000002DCA000-memory.dmp

              memory/628-156-0x0000000000400000-0x0000000002C7A000-memory.dmp

              memory/1732-158-0x0000000002350000-0x0000000002351000-memory.dmp

              memory/2068-154-0x0000000000400000-0x0000000002C7A000-memory.dmp

              memory/2068-153-0x0000000002C80000-0x0000000002DCA000-memory.dmp

              memory/2100-169-0x0000000000B40000-0x0000000000C9D000-memory.dmp

              memory/2100-184-0x0000000004720000-0x00000000059B6000-memory.dmp

              memory/3128-114-0x0000000004A20000-0x0000000004AC0000-memory.dmp

              memory/3128-115-0x0000000000400000-0x0000000002CCB000-memory.dmp

              memory/3540-170-0x0000000000400000-0x00000000033CF000-memory.dmp

              memory/3540-164-0x0000000003760000-0x000000000385E000-memory.dmp

              memory/3844-182-0x0000000000B00000-0x0000000000C5D000-memory.dmp