Analysis

  • max time kernel
    141s
  • max time network
    130s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    19/06/2021, 06:16

General

  • Target
    5ee7cd16c3d167a8437ec1770e6b0285.exe
  • Size 743KB
  • Sample210619-evbwsphgaj
  • SHA256 21ada98043ea73edf58648a2a43856bed7f8e9fafdc948aae020b1dbb3053d90
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • cryptbot

C2
  • kiylgh62.top

  • moruie06.top

Attributes
  • payload_url

    http://peonuo08.top/download.php?file=lv.exe

Signatures

  • CryptBot

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

  • CryptBot Payload 2 IoCs
  • Blocklisted process makes network request 7 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 7 IoCs
  • Drops startup file 1 IoCs
  • Loads dropped DLL 3 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
  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 5 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 28 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 4 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5ee7cd16c3d167a8437ec1770e6b0285.exe
    "C:\Users\Admin\AppData\Local\Temp\5ee7cd16c3d167a8437ec1770e6b0285.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:632
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\hYSpnK.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3812
      • C:\Users\Admin\AppData\Local\Temp\hYSpnK.exe
        "C:\Users\Admin\AppData\Local\Temp\hYSpnK.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Program Files directory
        • Suspicious use of WriteProcessMemory
        PID:2752
        • C:\Users\Admin\AppData\Local\Temp\New Feature\4.exe
          "C:\Users\Admin\AppData\Local\Temp\New Feature\4.exe"
          4⤵
          • Executes dropped EXE
          • Drops startup file
          • Suspicious use of WriteProcessMemory
          PID:856
          • C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe
            "C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious behavior: AddClipboardFormatListener
            PID:884
        • C:\Users\Admin\AppData\Local\Temp\New Feature\vpn.exe
          "C:\Users\Admin\AppData\Local\Temp\New Feature\vpn.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:3692
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c cmd < Dormissero.wpd
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:2060
            • C:\Windows\SysWOW64\cmd.exe
              cmd
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:4008
              • C:\Windows\SysWOW64\findstr.exe
                findstr /V /R "^yDsOhfSavSpAbPmIcKdnQIreaKfHRDgtrOWNQEZgeibhzBUxbMIjNghvAfvCqkATDybISMRQKecJkQIQPUltV$" Uso.wpd
                7⤵
                  PID:2012
                • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Veduto.exe.com
                  Veduto.exe.com o
                  7⤵
                  • Executes dropped EXE
                  • Suspicious use of WriteProcessMemory
                  PID:2756
                  • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Veduto.exe.com
                    C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Veduto.exe.com o
                    8⤵
                    • Executes dropped EXE
                    • Checks processor information in registry
                    • Modifies registry class
                    • Suspicious use of WriteProcessMemory
                    PID:3804
                    • C:\Users\Admin\AppData\Local\Temp\ygkpmslepj.exe
                      "C:\Users\Admin\AppData\Local\Temp\ygkpmslepj.exe"
                      9⤵
                      • Executes dropped EXE
                      • Suspicious use of WriteProcessMemory
                      PID:3828
                      • C:\Windows\SysWOW64\rundll32.exe
                        C:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\YGKPMS~1.TMP,S C:\Users\Admin\AppData\Local\Temp\YGKPMS~1.EXE
                        10⤵
                        • Blocklisted process makes network request
                        • Loads dropped DLL
                        • Drops file in Program Files directory
                        • Suspicious use of WriteProcessMemory
                        PID:2104
                        • C:\Windows\SysWOW64\rundll32.exe
                          C:\Windows\system32\rundll32.exe C:\PROGRA~3\LAUVHF~1\JHAKLD~1.TMP,MAMtMVVPN2E= C:\Users\Admin\AppData\Local\Temp\YGKPMS~1.TMP
                          11⤵
                          • Blocklisted process makes network request
                          • Loads dropped DLL
                          • Suspicious use of SetThreadContext
                          • Checks processor information in registry
                          • Modifies system certificate store
                          • Suspicious behavior: EnumeratesProcesses
                          • Suspicious use of AdjustPrivilegeToken
                          • Suspicious use of FindShellTrayWindow
                          • Suspicious use of WriteProcessMemory
                          PID:2012
                          • C:\Windows\system32\rundll32.exe
                            C:\Windows\system32\rundll32.exe C:\Windows\system32\shell32.dll,#61 17894
                            12⤵
                              PID:2756
                            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Executionpolicy bypass -File "C:\Users\Admin\AppData\Local\Temp\tmp5669.tmp.ps1"
                              12⤵
                              • Suspicious behavior: EnumeratesProcesses
                              • Suspicious use of AdjustPrivilegeToken
                              PID:1072
                            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Executionpolicy bypass -File "C:\Users\Admin\AppData\Local\Temp\tmp685D.tmp.ps1"
                              12⤵
                              • Suspicious behavior: EnumeratesProcesses
                              • Suspicious use of AdjustPrivilegeToken
                              • Suspicious use of WriteProcessMemory
                              PID:1916
                              • C:\Windows\SysWOW64\nslookup.exe
                                "C:\Windows\system32\nslookup.exe" -type=any localhost
                                13⤵
                                  PID:192
                              • C:\Windows\SysWOW64\schtasks.exe
                                schtasks /End /tn \Microsoft\Windows\Wininet\CacheTask
                                12⤵
                                  PID:632
                                • C:\Windows\SysWOW64\schtasks.exe
                                  schtasks /Run /tn \Microsoft\Windows\Wininet\CacheTask
                                  12⤵
                                    PID:2284
                            • C:\Windows\SysWOW64\WScript.exe
                              "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\cucvxoyns.vbs"
                              9⤵
                                PID:1920
                              • C:\Windows\SysWOW64\WScript.exe
                                "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\uvirpjxe.vbs"
                                9⤵
                                • Blocklisted process makes network request
                                • Modifies system certificate store
                                PID:1836
                          • C:\Windows\SysWOW64\PING.EXE
                            ping 127.0.0.1 -n 30
                            7⤵
                            • Runs ping.exe
                            PID:3964
                • C:\Windows\SysWOW64\cmd.exe
                  "C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\uMdKotvFZa & timeout 3 & del /f /q "C:\Users\Admin\AppData\Local\Temp\5ee7cd16c3d167a8437ec1770e6b0285.exe"
                  2⤵
                  • Suspicious use of WriteProcessMemory
                  PID:3920
                  • C:\Windows\SysWOW64\timeout.exe
                    timeout 3
                    3⤵
                    • Delays execution with timeout.exe
                    PID:2156

              Network

                    MITRE ATT&CK Enterprise v6

                    Replay Monitor

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                    Downloads

                    memory/632-114-0x0000000002470000-0x0000000002551000-memory.dmp

                    memory/632-115-0x0000000000400000-0x0000000000958000-memory.dmp

                    memory/856-154-0x0000000000400000-0x00000000008F1000-memory.dmp

                    memory/856-153-0x0000000000A10000-0x0000000000B5A000-memory.dmp

                    memory/884-156-0x0000000000400000-0x00000000008F1000-memory.dmp

                    memory/884-155-0x0000000000900000-0x0000000000A4A000-memory.dmp

                    memory/1072-197-0x00000000082E0000-0x00000000082E1000-memory.dmp

                    memory/1072-190-0x0000000007A70000-0x0000000007A71000-memory.dmp

                    memory/1072-195-0x0000000008290000-0x0000000008291000-memory.dmp

                    memory/1072-196-0x0000000006C22000-0x0000000006C23000-memory.dmp

                    memory/1072-194-0x0000000006C20000-0x0000000006C21000-memory.dmp

                    memory/1072-192-0x0000000007B50000-0x0000000007B51000-memory.dmp

                    memory/1072-209-0x0000000006C23000-0x0000000006C24000-memory.dmp

                    memory/1072-191-0x0000000007AE0000-0x0000000007AE1000-memory.dmp

                    memory/1072-189-0x0000000007190000-0x0000000007191000-memory.dmp

                    memory/1072-206-0x0000000009060000-0x0000000009061000-memory.dmp

                    memory/1072-188-0x0000000007260000-0x0000000007261000-memory.dmp

                    memory/1072-205-0x0000000008F90000-0x0000000008F91000-memory.dmp

                    memory/1072-204-0x0000000009A10000-0x0000000009A11000-memory.dmp

                    memory/1072-199-0x00000000083C0000-0x00000000083C1000-memory.dmp

                    memory/1072-193-0x0000000007A50000-0x0000000007A51000-memory.dmp

                    memory/1072-187-0x0000000006A80000-0x0000000006A81000-memory.dmp

                    memory/1916-236-0x0000000000AA3000-0x0000000000AA4000-memory.dmp

                    memory/1916-222-0x0000000007F60000-0x0000000007F61000-memory.dmp

                    memory/1916-225-0x0000000000AA2000-0x0000000000AA3000-memory.dmp

                    memory/1916-224-0x0000000000AA0000-0x0000000000AA1000-memory.dmp

                    memory/1916-219-0x0000000007500000-0x0000000007501000-memory.dmp

                    memory/2012-181-0x0000000006460000-0x0000000006461000-memory.dmp

                    memory/2756-182-0x0000000000B60000-0x0000000000D00000-memory.dmp

                    memory/2756-183-0x000001A6ADEC0000-0x000001A6AE071000-memory.dmp

                    memory/3804-157-0x0000000000EB0000-0x0000000000EB1000-memory.dmp

                    memory/3828-167-0x00000000026D0000-0x00000000027BD000-memory.dmp

                    memory/3828-168-0x0000000000400000-0x00000000009B4000-memory.dmp