Analysis

  • max time kernel
    149s
  • max time network
    189s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    25/07/2021, 06:30

General

  • Target
    96428fec8fcdc425c07cb6874bfdfa74.exe
  • Size 240KB
  • Sample210725-m8ar3c75ea
  • SHA256 d8e97b327ea157afd377759204ca29d44475f50030e1321fa6ca4b05d9c4aed0
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://readinglistforjuly1.xyz/

  • http://readinglistforjuly2.xyz/

  • http://readinglistforjuly3.xyz/

  • http://readinglistforjuly4.xyz/

  • http://readinglistforjuly5.xyz/

  • http://readinglistforjuly6.xyz/

  • http://readinglistforjuly7.xyz/

  • http://readinglistforjuly8.xyz/

  • http://readinglistforjuly9.xyz/

  • http://readinglistforjuly10.xyz/

  • http://readinglistforjuly1.site/

  • http://readinglistforjuly2.site/

  • http://readinglistforjuly3.site/

  • http://readinglistforjuly4.site/

  • http://readinglistforjuly5.site/

  • http://readinglistforjuly6.site/

  • http://readinglistforjuly7.site/

  • http://readinglistforjuly8.site/

  • http://readinglistforjuly9.site/

  • http://readinglistforjuly10.site/

rc4.i32
rc4.i32

Extracted

Family
  • redline

Botnet
  • 123123123

C2
  • 45.32.235.238:45555

Extracted

Family
  • vidar

Version
  • 39.7

Botnet
  • 408

C2
  • https://shpak125.tumblr.com/

Attributes
  • profile_id

    408

Signatures

  • 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 3 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • suricata: ET MALWARE Sharik/Smoke CnC Beacon 11
  • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
  • suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Vidar Stealer 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 9 IoCs
  • Checks BIOS information in registry 2 TTPs 4 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 local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Themida packer 4 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • 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 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • 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 3 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\96428fec8fcdc425c07cb6874bfdfa74.exe
    "C:\Users\Admin\AppData\Local\Temp\96428fec8fcdc425c07cb6874bfdfa74.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2000
    • C:\Users\Admin\AppData\Local\Temp\96428fec8fcdc425c07cb6874bfdfa74.exe
      "C:\Users\Admin\AppData\Local\Temp\96428fec8fcdc425c07cb6874bfdfa74.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1412
  • C:\Users\Admin\AppData\Local\Temp\24C0.exe
    C:\Users\Admin\AppData\Local\Temp\24C0.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetWindowsHookEx
    PID:1580
  • C:\Users\Admin\AppData\Local\Temp\25D9.exe
    C:\Users\Admin\AppData\Local\Temp\25D9.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1016
    • C:\Users\Admin\AppData\Local\Temp\25D9.exe
      C:\Users\Admin\AppData\Local\Temp\25D9.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2036
  • C:\Users\Admin\AppData\Local\Temp\2A3E.exe
    C:\Users\Admin\AppData\Local\Temp\2A3E.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:368
  • C:\Users\Admin\AppData\Local\Temp\2CAF.exe
    C:\Users\Admin\AppData\Local\Temp\2CAF.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Modifies system certificate store
    PID:1096
  • C:\Users\Admin\AppData\Local\Temp\2E64.exe
    C:\Users\Admin\AppData\Local\Temp\2E64.exe
    1⤵
    • Executes dropped EXE
    PID:1092
  • C:\Users\Admin\AppData\Local\Temp\3567.exe
    C:\Users\Admin\AppData\Local\Temp\3567.exe
    1⤵
    • Executes dropped EXE
    PID:1376
  • C:\Users\Admin\AppData\Local\Temp\3E00.exe
    C:\Users\Admin\AppData\Local\Temp\3E00.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:1828
  • C:\Users\Admin\AppData\Local\Temp\436D.exe
    C:\Users\Admin\AppData\Local\Temp\436D.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Checks processor information in registry
    • Modifies system certificate store
    PID:1444
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im 436D.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\436D.exe" & del C:\ProgramData\*.dll & exit
      2⤵
        PID:1108
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /im 436D.exe /f
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:468
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 6
          3⤵
          • Delays execution with timeout.exe
          PID:268
    • C:\Windows\SysWOW64\explorer.exe
      C:\Windows\SysWOW64\explorer.exe
      1⤵
        PID:932
      • C:\Windows\explorer.exe
        C:\Windows\explorer.exe
        1⤵
          PID:1616
        • C:\Windows\SysWOW64\explorer.exe
          C:\Windows\SysWOW64\explorer.exe
          1⤵
            PID:760
          • C:\Windows\explorer.exe
            C:\Windows\explorer.exe
            1⤵
              PID:112
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              1⤵
                PID:1836
              • C:\Windows\explorer.exe
                C:\Windows\explorer.exe
                1⤵
                  PID:484
                • C:\Windows\SysWOW64\explorer.exe
                  C:\Windows\SysWOW64\explorer.exe
                  1⤵
                    PID:628
                  • C:\Windows\explorer.exe
                    C:\Windows\explorer.exe
                    1⤵
                      PID:924
                    • C:\Windows\SysWOW64\explorer.exe
                      C:\Windows\SysWOW64\explorer.exe
                      1⤵
                        PID:1664

                      Network

                            MITRE ATT&CK Enterprise v6

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

                            memory/112-135-0x0000000000060000-0x000000000006F000-memory.dmp

                            memory/112-134-0x0000000000070000-0x0000000000079000-memory.dmp

                            memory/368-79-0x0000000001200000-0x0000000001201000-memory.dmp

                            memory/368-85-0x0000000005250000-0x0000000005251000-memory.dmp

                            memory/484-143-0x0000000000060000-0x000000000006C000-memory.dmp

                            memory/484-142-0x0000000000070000-0x0000000000076000-memory.dmp

                            memory/628-147-0x0000000000090000-0x0000000000094000-memory.dmp

                            memory/628-148-0x0000000000080000-0x0000000000089000-memory.dmp

                            memory/760-132-0x0000000000080000-0x000000000008B000-memory.dmp

                            memory/760-131-0x0000000000090000-0x0000000000097000-memory.dmp

                            memory/760-128-0x00000000707B1000-0x00000000707B3000-memory.dmp

                            memory/924-151-0x0000000000060000-0x0000000000069000-memory.dmp

                            memory/924-150-0x0000000000070000-0x0000000000075000-memory.dmp

                            memory/932-111-0x0000000070C21000-0x0000000070C23000-memory.dmp

                            memory/932-115-0x00000000000F0000-0x000000000015B000-memory.dmp

                            memory/932-113-0x0000000000160000-0x00000000001D4000-memory.dmp

                            memory/1016-71-0x00000000012A0000-0x00000000012A1000-memory.dmp

                            memory/1016-78-0x0000000004BD0000-0x0000000004BD1000-memory.dmp

                            memory/1092-94-0x0000000000400000-0x00000000004AA000-memory.dmp

                            memory/1096-90-0x0000000000230000-0x00000000002C1000-memory.dmp

                            memory/1096-92-0x0000000000400000-0x00000000004AA000-memory.dmp

                            memory/1220-63-0x0000000002A40000-0x0000000002A56000-memory.dmp

                            memory/1376-114-0x0000000000400000-0x00000000004AA000-memory.dmp

                            memory/1412-59-0x0000000000400000-0x0000000000409000-memory.dmp

                            memory/1412-61-0x0000000075D11000-0x0000000075D13000-memory.dmp

                            memory/1444-121-0x0000000000400000-0x00000000008FE000-memory.dmp

                            memory/1444-120-0x0000000000900000-0x000000000099D000-memory.dmp

                            memory/1616-119-0x0000000000060000-0x000000000006C000-memory.dmp

                            memory/1616-118-0x0000000000070000-0x0000000000077000-memory.dmp

                            memory/1664-159-0x0000000000090000-0x0000000000095000-memory.dmp

                            memory/1664-160-0x0000000000080000-0x0000000000089000-memory.dmp

                            memory/1828-112-0x0000000005190000-0x0000000005191000-memory.dmp

                            memory/1828-102-0x0000000000CF0000-0x0000000000CF1000-memory.dmp

                            memory/1836-140-0x0000000000080000-0x0000000000089000-memory.dmp

                            memory/1836-139-0x0000000000090000-0x0000000000095000-memory.dmp

                            memory/2000-62-0x0000000000220000-0x000000000022A000-memory.dmp

                            memory/2036-103-0x0000000004D70000-0x0000000004D71000-memory.dmp

                            memory/2036-91-0x0000000000400000-0x000000000041E000-memory.dmp

                            memory/2036-96-0x0000000000400000-0x000000000041E000-memory.dmp