Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    27/12/2021, 05:41

General

  • Target
    b85c7fb598909a1cb30195da03a9a96e.exe
  • Size 331KB
  • Sample211227-gdfd2aagfr
  • SHA256 cdc7207558b703ce70e83a15a5d2f4fa30c33215870558df2ac02bf746ea5db7
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://host-data-coin-11.com/

  • http://file-coin-host-12.com/

rc4.i32
rc4.i32

Extracted

Family
  • tofsee

C2
  • parubey.info

  • patmushta.info

Extracted

Family
  • raccoon

Botnet
  • 10da56e7e71e97bdc1f36eb76813bbc3231de7e4

Attributes
  • url4cnc

    http://194.180.174.53/capibar

    http://91.219.236.18/capibar

    http://194.180.174.41/capibar

    http://91.219.236.148/capibar

    https://t.me/capibar

rc4.plain
rc4.plain

Signatures

  • Arkei

    Arkei is an infostealer written in C++.

  • 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 4 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 Single char EXE direct download likely trojan (multiple families)

    suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)

  • Arkei Stealer Payload 4 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Creates new service(s) 1 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 12 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Sets service image path in registry 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Deletes itself 1 IoCs
  • Loads dropped DLL 12 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.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
  • Suspicious use of SetThreadContext 4 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.

  • Checks processor information in registry 2 TTPs 4 IoCs

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

  • Delays execution with timeout.exe 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b85c7fb598909a1cb30195da03a9a96e.exe
    "C:\Users\Admin\AppData\Local\Temp\b85c7fb598909a1cb30195da03a9a96e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1592
    • C:\Users\Admin\AppData\Local\Temp\b85c7fb598909a1cb30195da03a9a96e.exe
      "C:\Users\Admin\AppData\Local\Temp\b85c7fb598909a1cb30195da03a9a96e.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1608
  • C:\Users\Admin\AppData\Local\Temp\FE5C.exe
    C:\Users\Admin\AppData\Local\Temp\FE5C.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    PID:584
  • C:\Users\Admin\AppData\Local\Temp\6BDE.exe
    C:\Users\Admin\AppData\Local\Temp\6BDE.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Checks processor information in registry
    PID:624
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\6BDE.exe" & exit
      2⤵
        PID:1692
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 5
          3⤵
          • Delays execution with timeout.exe
          PID:1696
    • C:\Users\Admin\AppData\Local\Temp\6F68.exe
      C:\Users\Admin\AppData\Local\Temp\6F68.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1876
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hjrjocxv\
        2⤵
          PID:1348
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mhidrgsa.exe" C:\Windows\SysWOW64\hjrjocxv\
          2⤵
            PID:1768
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" create hjrjocxv binPath= "C:\Windows\SysWOW64\hjrjocxv\mhidrgsa.exe /d\"C:\Users\Admin\AppData\Local\Temp\6F68.exe\"" type= own start= auto DisplayName= "wifi support"
            2⤵
              PID:1016
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" description hjrjocxv "wifi internet conection"
              2⤵
                PID:1960
              • C:\Windows\SysWOW64\sc.exe
                "C:\Windows\System32\sc.exe" start hjrjocxv
                2⤵
                  PID:1328
                • 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:952
                • C:\Users\Admin\AppData\Local\Temp\7301.exe
                  C:\Users\Admin\AppData\Local\Temp\7301.exe
                  1⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  • Suspicious use of SetThreadContext
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of WriteProcessMemory
                  PID:1624
                  • C:\Users\Admin\AppData\Local\Temp\7301.exe
                    C:\Users\Admin\AppData\Local\Temp\7301.exe
                    2⤵
                    • Executes dropped EXE
                    • Suspicious use of AdjustPrivilegeToken
                    PID:860
                • C:\Windows\SysWOW64\hjrjocxv\mhidrgsa.exe
                  C:\Windows\SysWOW64\hjrjocxv\mhidrgsa.exe /d"C:\Users\Admin\AppData\Local\Temp\6F68.exe"
                  1⤵
                  • Executes dropped EXE
                  • Suspicious use of SetThreadContext
                  • Suspicious use of WriteProcessMemory
                  PID:1568
                  • C:\Windows\SysWOW64\svchost.exe
                    svchost.exe
                    2⤵
                      PID:1188
                  • C:\Users\Admin\AppData\Local\Temp\CAF1.exe
                    C:\Users\Admin\AppData\Local\Temp\CAF1.exe
                    1⤵
                    • Executes dropped EXE
                    PID:1548
                  • C:\Users\Admin\AppData\Local\Temp\D158.exe
                    C:\Users\Admin\AppData\Local\Temp\D158.exe
                    1⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    • Suspicious use of SetThreadContext
                    PID:1828
                    • C:\Users\Admin\AppData\Local\Temp\D158.exe
                      C:\Users\Admin\AppData\Local\Temp\D158.exe
                      2⤵
                      • Executes dropped EXE
                      • Checks SCSI registry key(s)
                      • Suspicious behavior: MapViewOfSection
                      PID:1508
                  • C:\Users\Admin\AppData\Local\Temp\D7EE.exe
                    C:\Users\Admin\AppData\Local\Temp\D7EE.exe
                    1⤵
                    • Executes dropped EXE
                    • Checks BIOS information in registry
                    • Loads dropped DLL
                    • Checks whether UAC is enabled
                    • Suspicious use of NtSetInformationThreadHideFromDebugger
                    • Checks processor information in registry
                    PID:824
                    • C:\Windows\SysWOW64\cmd.exe
                      "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\D7EE.exe" & exit
                      2⤵
                        PID:1272
                        • C:\Windows\SysWOW64\timeout.exe
                          timeout /t 5
                          3⤵
                          • Delays execution with timeout.exe
                          PID:1752
                    • C:\Users\Admin\AppData\Local\Temp\E019.exe
                      C:\Users\Admin\AppData\Local\Temp\E019.exe
                      1⤵
                      • Executes dropped EXE
                      • Suspicious use of AdjustPrivilegeToken
                      PID:1936
                    • C:\Users\Admin\AppData\Local\Temp\EBF1.exe
                      C:\Users\Admin\AppData\Local\Temp\EBF1.exe
                      1⤵
                      • Executes dropped EXE
                      PID:1544

                    Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          memory/584-67-0x0000000000100000-0x0000000000101000-memory.dmp

                          memory/584-82-0x00000000764F0000-0x0000000076525000-memory.dmp

                          memory/584-81-0x0000000073410000-0x0000000073427000-memory.dmp

                          memory/584-80-0x0000000075470000-0x00000000760BA000-memory.dmp

                          memory/584-79-0x00000000029C0000-0x00000000029C1000-memory.dmp

                          memory/584-77-0x00000000749F0000-0x0000000074A7F000-memory.dmp

                          memory/584-76-0x00000000002D0000-0x0000000000496000-memory.dmp

                          memory/584-75-0x00000000002D0000-0x0000000000496000-memory.dmp

                          memory/584-74-0x0000000074A90000-0x0000000074BEC000-memory.dmp

                          memory/584-72-0x0000000000200000-0x0000000000245000-memory.dmp

                          memory/584-71-0x0000000075370000-0x00000000753C7000-memory.dmp

                          memory/584-69-0x0000000076730000-0x00000000767DC000-memory.dmp

                          memory/584-70-0x0000000074F20000-0x0000000074F67000-memory.dmp

                          memory/584-65-0x00000000002D0000-0x0000000000496000-memory.dmp

                          memory/584-66-0x00000000002D0000-0x0000000000496000-memory.dmp

                          memory/584-64-0x00000000746C0000-0x000000007470A000-memory.dmp

                          memory/624-96-0x0000000000400000-0x00000000004D5000-memory.dmp

                          memory/624-94-0x0000000000020000-0x000000000003C000-memory.dmp

                          memory/624-87-0x00000000005C8000-0x00000000005D9000-memory.dmp

                          memory/824-168-0x00000000000C0000-0x00000000004B8000-memory.dmp

                          memory/824-164-0x00000000000C0000-0x00000000004B8000-memory.dmp

                          memory/824-154-0x00000000000C0000-0x00000000004B8000-memory.dmp

                          memory/824-155-0x0000000000090000-0x0000000000091000-memory.dmp

                          memory/824-162-0x0000000000530000-0x0000000000574000-memory.dmp

                          memory/824-156-0x0000000074F20000-0x0000000074F67000-memory.dmp

                          memory/824-166-0x00000000000C0000-0x00000000004B8000-memory.dmp

                          memory/824-170-0x00000000000C0000-0x00000000004B8000-memory.dmp

                          memory/824-153-0x00000000000C0000-0x00000000004B8000-memory.dmp

                          memory/824-152-0x00000000000C0000-0x00000000004B8000-memory.dmp

                          memory/824-165-0x00000000000C0000-0x00000000004B8000-memory.dmp

                          memory/824-157-0x0000000076730000-0x00000000767DC000-memory.dmp

                          memory/824-163-0x00000000000C0000-0x00000000004B8000-memory.dmp

                          memory/860-116-0x0000000000400000-0x0000000000420000-memory.dmp

                          memory/860-128-0x0000000004A00000-0x0000000004A01000-memory.dmp

                          memory/860-122-0x0000000000400000-0x0000000000420000-memory.dmp

                          memory/860-121-0x0000000000400000-0x0000000000420000-memory.dmp

                          memory/860-115-0x0000000000400000-0x0000000000420000-memory.dmp

                          memory/860-114-0x0000000000400000-0x0000000000420000-memory.dmp

                          memory/860-113-0x0000000000400000-0x0000000000420000-memory.dmp

                          memory/860-112-0x0000000000400000-0x0000000000420000-memory.dmp

                          memory/1188-123-0x0000000000080000-0x0000000000095000-memory.dmp

                          memory/1188-124-0x0000000000080000-0x0000000000095000-memory.dmp

                          memory/1192-59-0x0000000002AB0000-0x0000000002AC6000-memory.dmp

                          memory/1192-179-0x0000000004870000-0x0000000004886000-memory.dmp

                          memory/1544-180-0x00000000002F0000-0x0000000000350000-memory.dmp

                          memory/1548-167-0x0000000000320000-0x00000000003B5000-memory.dmp

                          memory/1548-194-0x0000000000400000-0x0000000000885000-memory.dmp

                          memory/1548-158-0x000000000099B000-0x00000000009F9000-memory.dmp

                          memory/1548-190-0x0000000000400000-0x0000000000885000-memory.dmp

                          memory/1548-191-0x0000000000250000-0x00000000002A0000-memory.dmp

                          memory/1548-169-0x0000000000400000-0x0000000000885000-memory.dmp

                          memory/1548-193-0x0000000000890000-0x0000000000922000-memory.dmp

                          memory/1568-117-0x00000000006B8000-0x00000000006C9000-memory.dmp

                          memory/1568-127-0x0000000000400000-0x00000000004D4000-memory.dmp

                          memory/1592-54-0x00000000005E8000-0x00000000005F9000-memory.dmp

                          memory/1592-58-0x0000000000020000-0x0000000000029000-memory.dmp

                          memory/1608-55-0x0000000000400000-0x0000000000409000-memory.dmp

                          memory/1608-57-0x0000000075471000-0x0000000075473000-memory.dmp

                          memory/1624-104-0x0000000000B70000-0x0000000000B71000-memory.dmp

                          memory/1624-105-0x0000000000220000-0x0000000000221000-memory.dmp

                          memory/1624-92-0x0000000001230000-0x00000000012BA000-memory.dmp

                          memory/1624-91-0x0000000001230000-0x00000000012BA000-memory.dmp

                          memory/1828-142-0x0000000000578000-0x0000000000588000-memory.dmp

                          memory/1876-93-0x00000000005F8000-0x0000000000609000-memory.dmp

                          memory/1876-103-0x0000000000400000-0x00000000004D4000-memory.dmp

                          memory/1876-95-0x0000000000020000-0x0000000000033000-memory.dmp

                          memory/1936-182-0x000000001B020000-0x000000001B022000-memory.dmp

                          memory/1936-174-0x0000000000F80000-0x0000000001028000-memory.dmp

                          memory/1936-177-0x0000000000240000-0x0000000000264000-memory.dmp

                          memory/1936-175-0x0000000000F80000-0x0000000001028000-memory.dmp

                          memory/1936-181-0x0000000000630000-0x0000000000650000-memory.dmp