Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-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.

  • 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

  • xmrig

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

  • Arkei Stealer Payload 4 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • XMRig Miner Payload 1 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 11 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.

  • 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 7 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 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:1628
    • 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:848
  • C:\Users\Admin\AppData\Local\Temp\6CF6.exe
    C:\Users\Admin\AppData\Local\Temp\6CF6.exe
    1⤵
    • Executes dropped EXE
    • Checks SCSI registry key(s)
    • Suspicious behavior: MapViewOfSection
    PID:872
  • C:\Users\Admin\AppData\Local\Temp\C3AE.exe
    C:\Users\Admin\AppData\Local\Temp\C3AE.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:692
    • C:\Users\Admin\AppData\Local\Temp\C3AE.exe
      C:\Users\Admin\AppData\Local\Temp\C3AE.exe
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:1016
  • C:\Users\Admin\AppData\Local\Temp\C8CD.exe
    C:\Users\Admin\AppData\Local\Temp\C8CD.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Checks processor information in registry
    PID:608
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\C8CD.exe" & exit
      2⤵
        PID:268
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 5
          3⤵
          • Delays execution with timeout.exe
          PID:872
    • C:\Users\Admin\AppData\Local\Temp\D8D5.exe
      C:\Users\Admin\AppData\Local\Temp\D8D5.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1976
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zsmtvew\
        2⤵
          PID:2032
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dsysndbq.exe" C:\Windows\SysWOW64\zsmtvew\
          2⤵
            PID:1068
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" create zsmtvew binPath= "C:\Windows\SysWOW64\zsmtvew\dsysndbq.exe /d\"C:\Users\Admin\AppData\Local\Temp\D8D5.exe\"" type= own start= auto DisplayName= "wifi support"
            2⤵
              PID:1324
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" description zsmtvew "wifi internet conection"
              2⤵
                PID:1964
              • C:\Windows\SysWOW64\sc.exe
                "C:\Windows\System32\sc.exe" start zsmtvew
                2⤵
                  PID:2028
                • 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:844
                • C:\Windows\SysWOW64\explorer.exe
                  C:\Windows\SysWOW64\explorer.exe
                  1⤵
                  • Accesses Microsoft Outlook profiles
                  • outlook_office_path
                  • outlook_win_path
                  PID:1172
                • C:\Windows\explorer.exe
                  C:\Windows\explorer.exe
                  1⤵
                    PID:1556
                  • C:\Users\Admin\AppData\Local\Temp\519D.exe
                    C:\Users\Admin\AppData\Local\Temp\519D.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:1608
                    • C:\Windows\SysWOW64\cmd.exe
                      "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\519D.exe" & exit
                      2⤵
                        PID:1964
                        • C:\Windows\SysWOW64\timeout.exe
                          timeout /t 5
                          3⤵
                          • Delays execution with timeout.exe
                          PID:932
                    • C:\Windows\SysWOW64\zsmtvew\dsysndbq.exe
                      C:\Windows\SysWOW64\zsmtvew\dsysndbq.exe /d"C:\Users\Admin\AppData\Local\Temp\D8D5.exe"
                      1⤵
                      • Executes dropped EXE
                      • Suspicious use of SetThreadContext
                      PID:692
                      • C:\Windows\SysWOW64\svchost.exe
                        svchost.exe
                        2⤵
                        • Drops file in System32 directory
                        • Suspicious use of SetThreadContext
                        • Modifies data under HKEY_USERS
                        PID:1500
                        • 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:2008
                    • C:\Users\Admin\AppData\Local\Temp\5F35.exe
                      C:\Users\Admin\AppData\Local\Temp\5F35.exe
                      1⤵
                      • Executes dropped EXE
                      PID:1404
                    • C:\Users\Admin\AppData\Local\Temp\A011.exe
                      C:\Users\Admin\AppData\Local\Temp\A011.exe
                      1⤵
                      • Executes dropped EXE
                      • Checks BIOS information in registry
                      • Checks whether UAC is enabled
                      • Suspicious use of SetThreadContext
                      PID:1932
                      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
                        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
                        2⤵
                          PID:2024
                      • C:\Users\Admin\AppData\Local\Temp\BECC.exe
                        C:\Users\Admin\AppData\Local\Temp\BECC.exe
                        1⤵
                        • Executes dropped EXE
                        PID:1696
                      • C:\Users\Admin\AppData\Local\Temp\C5CF.exe
                        C:\Users\Admin\AppData\Local\Temp\C5CF.exe
                        1⤵
                        • Executes dropped EXE
                        • Checks BIOS information in registry
                        • Checks whether UAC is enabled
                        • Suspicious use of SetThreadContext
                        PID:1480
                        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
                          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
                          2⤵
                            PID:1220

                        Network

                              MITRE ATT&CK Enterprise v6

                              Replay Monitor

                              Loading Replay Monitor...

                              Downloads

                              memory/608-74-0x0000000000400000-0x0000000002B87000-memory.dmp

                              memory/608-73-0x0000000000240000-0x000000000025C000-memory.dmp

                              memory/608-72-0x0000000000220000-0x0000000000231000-memory.dmp

                              memory/848-55-0x00000000751B1000-0x00000000751B3000-memory.dmp

                              memory/848-53-0x0000000000400000-0x0000000000409000-memory.dmp

                              memory/872-64-0x0000000000400000-0x000000000046D000-memory.dmp

                              memory/872-61-0x00000000005DA000-0x00000000005EA000-memory.dmp

                              memory/872-63-0x0000000000020000-0x0000000000029000-memory.dmp

                              memory/1172-88-0x0000000000130000-0x000000000019B000-memory.dmp

                              memory/1172-81-0x00000000001A0000-0x0000000000214000-memory.dmp

                              memory/1172-78-0x00000000745E1000-0x00000000745E3000-memory.dmp

                              memory/1220-255-0x0000000000400000-0x0000000000420000-memory.dmp

                              memory/1220-254-0x0000000000400000-0x0000000000420000-memory.dmp

                              memory/1220-248-0x0000000000400000-0x0000000000420000-memory.dmp

                              memory/1376-90-0x00000000029B0000-0x00000000029C6000-memory.dmp

                              memory/1376-65-0x0000000002AD0000-0x0000000002AE6000-memory.dmp

                              memory/1376-58-0x0000000002580000-0x0000000002596000-memory.dmp

                              memory/1404-138-0x0000000002190000-0x0000000002225000-memory.dmp

                              memory/1404-131-0x000000000096A000-0x00000000009DD000-memory.dmp

                              memory/1404-137-0x0000000000400000-0x0000000000885000-memory.dmp

                              memory/1404-133-0x0000000000400000-0x0000000000885000-memory.dmp

                              memory/1404-132-0x0000000000890000-0x0000000000927000-memory.dmp

                              memory/1404-139-0x0000000000400000-0x0000000000885000-memory.dmp

                              memory/1404-136-0x00000000009DE000-0x0000000000A3B000-memory.dmp

                              memory/1480-245-0x0000000000400000-0x00000000006F7000-memory.dmp

                              memory/1480-246-0x0000000000400000-0x00000000006F7000-memory.dmp

                              memory/1500-205-0x0000000000080000-0x0000000000095000-memory.dmp

                              memory/1500-204-0x0000000000080000-0x0000000000095000-memory.dmp

                              memory/1556-79-0x0000000000070000-0x0000000000077000-memory.dmp

                              memory/1556-80-0x0000000000060000-0x000000000006C000-memory.dmp

                              memory/1608-110-0x0000000000800000-0x0000000000AB3000-memory.dmp

                              memory/1608-101-0x0000000000800000-0x0000000000AB3000-memory.dmp

                              memory/1608-106-0x0000000074F20000-0x0000000074FCC000-memory.dmp

                              memory/1608-119-0x0000000000800000-0x0000000000AB3000-memory.dmp

                              memory/1608-109-0x0000000000800000-0x0000000000AB3000-memory.dmp

                              memory/1608-108-0x0000000000430000-0x0000000000475000-memory.dmp

                              memory/1608-105-0x0000000074FD0000-0x0000000075017000-memory.dmp

                              memory/1608-104-0x0000000000080000-0x0000000000081000-memory.dmp

                              memory/1608-103-0x0000000000800000-0x0000000000AB3000-memory.dmp

                              memory/1608-102-0x0000000000800000-0x0000000000AB3000-memory.dmp

                              memory/1608-118-0x0000000000800000-0x0000000000AB3000-memory.dmp

                              memory/1608-115-0x0000000000800000-0x0000000000AB3000-memory.dmp

                              memory/1608-117-0x0000000000800000-0x0000000000AB3000-memory.dmp

                              memory/1628-56-0x00000000001B0000-0x00000000001B8000-memory.dmp

                              memory/1628-57-0x0000000000240000-0x0000000000249000-memory.dmp

                              memory/1696-224-0x0000000000300000-0x0000000000301000-memory.dmp

                              memory/1696-222-0x0000000000400000-0x0000000000503000-memory.dmp

                              memory/1696-223-0x0000000000400000-0x0000000000503000-memory.dmp

                              memory/1696-227-0x00000000003D0000-0x00000000003FF000-memory.dmp

                              memory/1932-178-0x0000000002230000-0x0000000002231000-memory.dmp

                              memory/1932-188-0x00000000033A0000-0x00000000033A1000-memory.dmp

                              memory/1932-160-0x00000000026B0000-0x00000000026B1000-memory.dmp

                              memory/1932-164-0x00000000033B0000-0x00000000033B1000-memory.dmp

                              memory/1932-165-0x00000000033A0000-0x00000000033A1000-memory.dmp

                              memory/1932-166-0x00000000033A0000-0x00000000033A1000-memory.dmp

                              memory/1932-167-0x00000000033A0000-0x00000000033A1000-memory.dmp

                              memory/1932-163-0x00000000026E0000-0x00000000026E1000-memory.dmp

                              memory/1932-168-0x00000000033A0000-0x00000000033A1000-memory.dmp

                              memory/1932-169-0x0000000000750000-0x0000000000751000-memory.dmp

                              memory/1932-171-0x00000000003E0000-0x00000000003E1000-memory.dmp

                              memory/1932-170-0x0000000000760000-0x0000000000761000-memory.dmp

                              memory/1932-173-0x0000000000780000-0x0000000000781000-memory.dmp

                              memory/1932-172-0x0000000000730000-0x0000000000731000-memory.dmp

                              memory/1932-175-0x00000000033A0000-0x00000000033A1000-memory.dmp

                              memory/1932-174-0x00000000007A0000-0x00000000007A1000-memory.dmp

                              memory/1932-177-0x0000000002220000-0x0000000002221000-memory.dmp

                              memory/1932-176-0x00000000033A0000-0x00000000033A1000-memory.dmp

                              memory/1932-162-0x0000000002710000-0x0000000002711000-memory.dmp

                              memory/1932-180-0x0000000002250000-0x0000000002251000-memory.dmp

                              memory/1932-179-0x00000000021E0000-0x00000000021E1000-memory.dmp

                              memory/1932-182-0x0000000002200000-0x0000000002201000-memory.dmp

                              memory/1932-181-0x0000000002210000-0x0000000002211000-memory.dmp

                              memory/1932-184-0x00000000033A0000-0x00000000033A1000-memory.dmp

                              memory/1932-183-0x0000000002660000-0x0000000002661000-memory.dmp

                              memory/1932-185-0x00000000033A0000-0x00000000033A1000-memory.dmp

                              memory/1932-186-0x00000000033A0000-0x00000000033A1000-memory.dmp

                              memory/1932-161-0x00000000026A0000-0x00000000026A1000-memory.dmp

                              memory/1932-187-0x00000000033A0000-0x00000000033A1000-memory.dmp

                              memory/1932-190-0x0000000002770000-0x0000000002771000-memory.dmp

                              memory/1932-189-0x00000000003D0000-0x00000000003D1000-memory.dmp

                              memory/1932-191-0x0000000002780000-0x0000000002781000-memory.dmp

                              memory/1932-159-0x00000000026F0000-0x00000000026F1000-memory.dmp

                              memory/1932-158-0x0000000000400000-0x0000000000729000-memory.dmp

                              memory/1932-157-0x0000000000400000-0x0000000000729000-memory.dmp

                              memory/1932-152-0x0000000000400000-0x0000000000729000-memory.dmp

                              memory/1932-151-0x0000000000360000-0x00000000003C0000-memory.dmp

                              memory/1932-154-0x0000000000400000-0x0000000000729000-memory.dmp

                              memory/1932-155-0x00000000026D0000-0x00000000026D1000-memory.dmp

                              memory/1932-156-0x0000000002680000-0x0000000002681000-memory.dmp

                              memory/1932-153-0x00000000026C0000-0x00000000026C1000-memory.dmp

                              memory/1976-94-0x0000000000220000-0x000000000022D000-memory.dmp

                              memory/1976-95-0x0000000000230000-0x0000000000243000-memory.dmp

                              memory/1976-96-0x0000000000400000-0x0000000002B84000-memory.dmp

                              memory/2024-210-0x0000000000400000-0x0000000000420000-memory.dmp

                              memory/2024-209-0x0000000000400000-0x0000000000420000-memory.dmp

                              memory/2024-217-0x0000000000400000-0x0000000000420000-memory.dmp

                              memory/2024-216-0x0000000000400000-0x0000000000420000-memory.dmp