Analysis

  • max time kernel
    151s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    27/12/2021, 09:46

General

  • Target
    71ee7781e626ac33722fe36e4baa010e.exe
  • Size 331KB
  • Sample211227-lrmsgsbafj
  • SHA256 d57a368085b26a9704093e1937aa4ebdae2e0f6b04fc09155169f139fdda2d70
  • 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
  • patmushta.info

  • parubey.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 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 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 4 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 15 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 6 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
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 3 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 2 IoCs
  • 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
  • Modifies data under HKEY_USERS 12 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\71ee7781e626ac33722fe36e4baa010e.exe
    "C:\Users\Admin\AppData\Local\Temp\71ee7781e626ac33722fe36e4baa010e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3436
    • C:\Users\Admin\AppData\Local\Temp\71ee7781e626ac33722fe36e4baa010e.exe
      "C:\Users\Admin\AppData\Local\Temp\71ee7781e626ac33722fe36e4baa010e.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:4056
  • C:\Users\Admin\AppData\Local\Temp\8559.exe
    C:\Users\Admin\AppData\Local\Temp\8559.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    PID:952
  • C:\Users\Admin\AppData\Local\Temp\EFAC.exe
    C:\Users\Admin\AppData\Local\Temp\EFAC.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:2984
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\EFAC.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1280
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 5
        3⤵
        • Delays execution with timeout.exe
        PID:2212
  • C:\Users\Admin\AppData\Local\Temp\F2CA.exe
    C:\Users\Admin\AppData\Local\Temp\F2CA.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:2872
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rzudqgvp\
      2⤵
        PID:812
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dtdfrarw.exe" C:\Windows\SysWOW64\rzudqgvp\
        2⤵
          PID:1200
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create rzudqgvp binPath= "C:\Windows\SysWOW64\rzudqgvp\dtdfrarw.exe /d\"C:\Users\Admin\AppData\Local\Temp\F2CA.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:3460
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description rzudqgvp "wifi internet conection"
            2⤵
              PID:1900
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start rzudqgvp
              2⤵
                PID:4048
              • 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:2544
              • C:\Users\Admin\AppData\Local\Temp\F6C3.exe
                C:\Users\Admin\AppData\Local\Temp\F6C3.exe
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:3868
                • C:\Users\Admin\AppData\Local\Temp\F6C3.exe
                  C:\Users\Admin\AppData\Local\Temp\F6C3.exe
                  2⤵
                  • Executes dropped EXE
                  PID:2380
                • C:\Users\Admin\AppData\Local\Temp\F6C3.exe
                  C:\Users\Admin\AppData\Local\Temp\F6C3.exe
                  2⤵
                  • Executes dropped EXE
                  • Suspicious use of AdjustPrivilegeToken
                  PID:2948
              • C:\Windows\SysWOW64\rzudqgvp\dtdfrarw.exe
                C:\Windows\SysWOW64\rzudqgvp\dtdfrarw.exe /d"C:\Users\Admin\AppData\Local\Temp\F2CA.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:2928
                • C:\Windows\SysWOW64\svchost.exe
                  svchost.exe
                  2⤵
                  • Drops file in System32 directory
                  • Suspicious use of SetThreadContext
                  • Modifies data under HKEY_USERS
                  • Suspicious use of WriteProcessMemory
                  PID:1324
                  • 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:1500
              • C:\Users\Admin\AppData\Local\Temp\4E89.exe
                C:\Users\Admin\AppData\Local\Temp\4E89.exe
                1⤵
                • Executes dropped EXE
                PID:1432
              • C:\Users\Admin\AppData\Local\Temp\5976.exe
                C:\Users\Admin\AppData\Local\Temp\5976.exe
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                PID:4000
                • C:\Users\Admin\AppData\Local\Temp\5976.exe
                  C:\Users\Admin\AppData\Local\Temp\5976.exe
                  2⤵
                  • Executes dropped EXE
                  • Checks SCSI registry key(s)
                  • Suspicious behavior: MapViewOfSection
                  PID:1296
              • C:\Users\Admin\AppData\Local\Temp\5FD0.exe
                C:\Users\Admin\AppData\Local\Temp\5FD0.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:872
                • C:\Windows\SysWOW64\cmd.exe
                  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\5FD0.exe" & exit
                  2⤵
                    PID:1680
                    • C:\Windows\SysWOW64\timeout.exe
                      timeout /t 5
                      3⤵
                      • Delays execution with timeout.exe
                      PID:2676
                • C:\Users\Admin\AppData\Local\Temp\752E.exe
                  C:\Users\Admin\AppData\Local\Temp\752E.exe
                  1⤵
                  • Executes dropped EXE
                  PID:3084
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 3084 -s 400
                    2⤵
                    • Program crash
                    • Suspicious use of AdjustPrivilegeToken
                    PID:364
                • C:\Users\Admin\AppData\Local\Temp\7AAD.exe
                  C:\Users\Admin\AppData\Local\Temp\7AAD.exe
                  1⤵
                  • Executes dropped EXE
                  • Suspicious use of SetThreadContext
                  • Suspicious use of AdjustPrivilegeToken
                  PID:4060
                  • C:\Users\Admin\AppData\Local\Temp\7AAD.exe
                    C:\Users\Admin\AppData\Local\Temp\7AAD.exe
                    2⤵
                    • Executes dropped EXE
                    PID:3736
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 3736 -s 24
                      3⤵
                      • Program crash
                      PID:3208
                • C:\Users\Admin\AppData\Local\Temp\80D9.exe
                  C:\Users\Admin\AppData\Local\Temp\80D9.exe
                  1⤵
                  • Executes dropped EXE
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1704

                Network

                      MITRE ATT&CK Enterprise v6

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      memory/872-234-0x0000000000180000-0x000000000064A000-memory.dmp

                      memory/872-227-0x0000000000FA0000-0x00000000010EA000-memory.dmp

                      memory/872-222-0x0000000000180000-0x000000000064A000-memory.dmp

                      memory/872-231-0x0000000000180000-0x000000000064A000-memory.dmp

                      memory/872-233-0x0000000076E90000-0x000000007701E000-memory.dmp

                      memory/872-226-0x0000000076480000-0x0000000076642000-memory.dmp

                      memory/872-219-0x0000000000180000-0x000000000064A000-memory.dmp

                      memory/872-220-0x0000000000180000-0x000000000064A000-memory.dmp

                      memory/872-230-0x0000000000180000-0x000000000064A000-memory.dmp

                      memory/872-229-0x0000000000180000-0x000000000064A000-memory.dmp

                      memory/872-228-0x0000000000180000-0x000000000064A000-memory.dmp

                      memory/872-232-0x0000000000180000-0x000000000064A000-memory.dmp

                      memory/872-224-0x00000000010C0000-0x00000000010C1000-memory.dmp

                      memory/952-128-0x0000000073EA0000-0x0000000073F91000-memory.dmp

                      memory/952-133-0x00000000036A0000-0x00000000036B2000-memory.dmp

                      memory/952-139-0x0000000005A00000-0x0000000005A4B000-memory.dmp

                      memory/952-140-0x000000006FCD0000-0x000000006FD1B000-memory.dmp

                      memory/952-138-0x0000000074B30000-0x0000000075E78000-memory.dmp

                      memory/952-130-0x0000000000290000-0x0000000000456000-memory.dmp

                      memory/952-131-0x0000000071A80000-0x0000000071B00000-memory.dmp

                      memory/952-127-0x0000000002F60000-0x0000000002FA5000-memory.dmp

                      memory/952-132-0x0000000006080000-0x0000000006686000-memory.dmp

                      memory/952-137-0x00000000766E0000-0x0000000076C64000-memory.dmp

                      memory/952-136-0x0000000005A60000-0x0000000005A61000-memory.dmp

                      memory/952-135-0x00000000059C0000-0x00000000059FE000-memory.dmp

                      memory/952-129-0x0000000000290000-0x0000000000456000-memory.dmp

                      memory/952-123-0x0000000000290000-0x0000000000456000-memory.dmp

                      memory/952-126-0x0000000076480000-0x0000000076642000-memory.dmp

                      memory/952-125-0x0000000000FF0000-0x0000000000FF1000-memory.dmp

                      memory/952-124-0x0000000000290000-0x0000000000456000-memory.dmp

                      memory/952-134-0x0000000005B80000-0x0000000005C8A000-memory.dmp

                      memory/1324-178-0x0000000002BE0000-0x0000000002BF5000-memory.dmp

                      memory/1324-176-0x0000000002AF0000-0x0000000002AF1000-memory.dmp

                      memory/1324-175-0x0000000002AF0000-0x0000000002AF1000-memory.dmp

                      memory/1324-173-0x0000000002BE0000-0x0000000002BF5000-memory.dmp

                      memory/1432-235-0x0000000000B06000-0x0000000000B64000-memory.dmp

                      memory/1432-236-0x0000000000940000-0x0000000000A8A000-memory.dmp

                      memory/1432-237-0x0000000000400000-0x0000000000885000-memory.dmp

                      memory/1432-238-0x0000000000400000-0x0000000000885000-memory.dmp

                      memory/1432-239-0x00000000008E0000-0x0000000000930000-memory.dmp

                      memory/1432-240-0x0000000002680000-0x0000000002712000-memory.dmp

                      memory/1432-241-0x0000000000400000-0x0000000000885000-memory.dmp

                      memory/1500-203-0x0000000003260000-0x0000000003351000-memory.dmp

                      memory/1500-211-0x0000000003260000-0x0000000003351000-memory.dmp

                      memory/1704-263-0x00000000048F0000-0x0000000004902000-memory.dmp

                      memory/1704-262-0x0000000004E50000-0x0000000005456000-memory.dmp

                      memory/1704-260-0x00000000000E0000-0x0000000000102000-memory.dmp

                      memory/1704-261-0x00000000000E0000-0x0000000000102000-memory.dmp

                      memory/1704-264-0x0000000004A20000-0x0000000004B2A000-memory.dmp

                      memory/1704-265-0x0000000004970000-0x00000000049AE000-memory.dmp

                      memory/2164-119-0x0000000000980000-0x0000000000996000-memory.dmp

                      memory/2164-246-0x00000000043B0000-0x00000000043C6000-memory.dmp

                      memory/2872-159-0x00000000001E0000-0x00000000001F3000-memory.dmp

                      memory/2872-154-0x0000000000671000-0x0000000000682000-memory.dmp

                      memory/2872-160-0x0000000000400000-0x00000000004D4000-memory.dmp

                      memory/2928-177-0x0000000000400000-0x00000000004D4000-memory.dmp

                      memory/2928-172-0x000000000072C000-0x000000000073D000-memory.dmp

                      memory/2948-184-0x0000000000400000-0x0000000000420000-memory.dmp

                      memory/2948-200-0x0000000007510000-0x0000000007A3C000-memory.dmp

                      memory/2948-189-0x0000000005400000-0x000000000544B000-memory.dmp

                      memory/2948-194-0x0000000005750000-0x00000000057C6000-memory.dmp

                      memory/2948-195-0x0000000005870000-0x0000000005902000-memory.dmp

                      memory/2948-196-0x0000000006440000-0x000000000693E000-memory.dmp

                      memory/2948-197-0x0000000005840000-0x000000000585E000-memory.dmp

                      memory/2948-198-0x0000000006300000-0x0000000006366000-memory.dmp

                      memory/2948-199-0x0000000006E10000-0x0000000006FD2000-memory.dmp

                      memory/2948-188-0x00000000053C0000-0x00000000053FE000-memory.dmp

                      memory/2948-179-0x0000000000400000-0x0000000000420000-memory.dmp

                      memory/2948-183-0x0000000000400000-0x0000000000420000-memory.dmp

                      memory/2948-190-0x0000000005320000-0x0000000005926000-memory.dmp

                      memory/2948-185-0x0000000005930000-0x0000000005F36000-memory.dmp

                      memory/2948-187-0x0000000005490000-0x000000000559A000-memory.dmp

                      memory/2948-186-0x0000000005360000-0x0000000005372000-memory.dmp

                      memory/2984-155-0x0000000000400000-0x00000000004D5000-memory.dmp

                      memory/2984-153-0x00000000001C0000-0x00000000001DC000-memory.dmp

                      memory/3084-245-0x00000000024F0000-0x0000000002550000-memory.dmp

                      memory/3436-118-0x0000000000030000-0x0000000000039000-memory.dmp

                      memory/3436-115-0x0000000000711000-0x0000000000722000-memory.dmp

                      memory/3736-268-0x0000000000400000-0x0000000000420000-memory.dmp

                      memory/3868-156-0x0000000004B40000-0x0000000004BB6000-memory.dmp

                      memory/3868-151-0x0000000000270000-0x00000000002FA000-memory.dmp

                      memory/3868-162-0x0000000000C00000-0x0000000000C01000-memory.dmp

                      memory/3868-163-0x0000000005390000-0x000000000588E000-memory.dmp

                      memory/3868-161-0x0000000004CA0000-0x0000000004CA1000-memory.dmp

                      memory/3868-157-0x0000000002430000-0x000000000244E000-memory.dmp

                      memory/3868-152-0x0000000000270000-0x00000000002FA000-memory.dmp

                      memory/4056-116-0x0000000000400000-0x0000000000409000-memory.dmp

                      memory/4060-252-0x0000000005070000-0x00000000050E6000-memory.dmp

                      memory/4060-250-0x0000000000800000-0x000000000088A000-memory.dmp

                      memory/4060-251-0x0000000000800000-0x000000000088A000-memory.dmp

                      memory/4060-255-0x0000000002A80000-0x0000000002A81000-memory.dmp

                      memory/4060-253-0x0000000005050000-0x000000000506E000-memory.dmp

                      memory/4060-254-0x00000000051A0000-0x00000000051A1000-memory.dmp

                      memory/4060-256-0x00000000056B0000-0x0000000005BAE000-memory.dmp