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09-07-2021 23:00

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Analysis

  • max time kernel
    1801s
  • max time network
    1444s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    12-07-2021 16:55

General

  • Target

    toolspab2 (12).exe

  • Size

    315KB

  • MD5

    1d20e1f65938e837ef1b88f10f1bd6c3

  • SHA1

    703d7098dbfc476d2181b7fc041cc23e49c368f1

  • SHA256

    05cd7440851f13dd8f489bb3c06eba385d85d7d9a77a612049c04c541a88593d

  • SHA512

    f9d333abe1f721b8d45d7bc6b5f286af09a8d233bd1d41f0ad891840cf742364aeca2cb6ccd6543f56a8eaf32804f82f72f961d16d5ba663ad706d164915a196

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://999080321newfolder1002002131-service1002.space/

http://999080321newfolder1002002231-service1002.space/

http://999080321newfolder3100231-service1002.space/

http://999080321newfolder1002002431-service1002.space/

http://999080321newfolder1002002531-service1002.space/

http://999080321newfolder33417-012425999080321.space/

http://999080321test125831-service10020125999080321.space/

http://999080321test136831-service10020125999080321.space/

http://999080321test147831-service10020125999080321.space/

http://999080321test146831-service10020125999080321.space/

http://999080321test134831-service10020125999080321.space/

http://999080321est213531-service1002012425999080321.ru/

http://999080321yes1t3481-service10020125999080321.ru/

http://999080321test13561-service10020125999080321.su/

http://999080321test14781-service10020125999080321.info/

http://999080321test13461-service10020125999080321.net/

http://999080321test15671-service10020125999080321.tech/

http://999080321test12671-service10020125999080321.online/

http://999080321utest1341-service10020125999080321.ru/

http://999080321uest71-service100201dom25999080321.ru/

rc4.i32
rc4.i32

Signatures

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 8 IoCs
  • 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 7 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.

  • 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 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 18 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 62 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\toolspab2 (12).exe
    "C:\Users\Admin\AppData\Local\Temp\toolspab2 (12).exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2288
    • C:\Users\Admin\AppData\Local\Temp\toolspab2 (12).exe
      "C:\Users\Admin\AppData\Local\Temp\toolspab2 (12).exe"
      2⤵
      • Loads dropped DLL
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1516
  • C:\Users\Admin\AppData\Local\Temp\C47E.exe
    C:\Users\Admin\AppData\Local\Temp\C47E.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    PID:704
  • C:\Users\Admin\AppData\Local\Temp\C858.exe
    C:\Users\Admin\AppData\Local\Temp\C858.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    PID:4056
  • C:\Windows\SysWOW64\explorer.exe
    C:\Windows\SysWOW64\explorer.exe
    1⤵
      PID:1008
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe
      1⤵
        PID:1848
      • C:\Windows\SysWOW64\explorer.exe
        C:\Windows\SysWOW64\explorer.exe
        1⤵
          PID:4060
        • C:\Windows\explorer.exe
          C:\Windows\explorer.exe
          1⤵
            PID:1892
          • C:\Windows\SysWOW64\explorer.exe
            C:\Windows\SysWOW64\explorer.exe
            1⤵
              PID:2440
            • C:\Windows\explorer.exe
              C:\Windows\explorer.exe
              1⤵
                PID:1308
              • C:\Windows\SysWOW64\explorer.exe
                C:\Windows\SysWOW64\explorer.exe
                1⤵
                  PID:4004
                • C:\Windows\explorer.exe
                  C:\Windows\explorer.exe
                  1⤵
                    PID:3736
                  • C:\Windows\SysWOW64\explorer.exe
                    C:\Windows\SysWOW64\explorer.exe
                    1⤵
                      PID:1344
                    • C:\Users\Admin\AppData\Roaming\iuehhsf
                      C:\Users\Admin\AppData\Roaming\iuehhsf
                      1⤵
                      • Executes dropped EXE
                      • Suspicious use of SetThreadContext
                      • Suspicious use of WriteProcessMemory
                      PID:3044
                      • C:\Users\Admin\AppData\Roaming\iuehhsf
                        C:\Users\Admin\AppData\Roaming\iuehhsf
                        2⤵
                        • Executes dropped EXE
                        PID:1064
                    • C:\Users\Admin\AppData\Roaming\iuehhsf
                      C:\Users\Admin\AppData\Roaming\iuehhsf
                      1⤵
                      • Executes dropped EXE
                      • Suspicious use of SetThreadContext
                      • Suspicious use of WriteProcessMemory
                      PID:2124
                      • C:\Users\Admin\AppData\Roaming\iuehhsf
                        C:\Users\Admin\AppData\Roaming\iuehhsf
                        2⤵
                        • Executes dropped EXE
                        • Loads dropped DLL
                        • Checks SCSI registry key(s)
                        • Suspicious behavior: MapViewOfSection
                        PID:3940
                    • C:\Users\Admin\AppData\Roaming\iuehhsf
                      C:\Users\Admin\AppData\Roaming\iuehhsf
                      1⤵
                      • Executes dropped EXE
                      • Suspicious use of SetThreadContext
                      • Suspicious use of WriteProcessMemory
                      PID:3920
                      • C:\Users\Admin\AppData\Roaming\iuehhsf
                        C:\Users\Admin\AppData\Roaming\iuehhsf
                        2⤵
                        • Executes dropped EXE
                        PID:2764

                    Network

                    MITRE ATT&CK Enterprise v6

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    • memory/704-129-0x0000000002EA0000-0x0000000002F31000-memory.dmp

                      Filesize

                      580KB

                    • memory/704-131-0x0000000000400000-0x0000000002C3C000-memory.dmp

                      Filesize

                      40.2MB

                    • memory/1008-128-0x0000000000A00000-0x0000000000A6B000-memory.dmp

                      Filesize

                      428KB

                    • memory/1008-127-0x0000000000A70000-0x0000000000AE4000-memory.dmp

                      Filesize

                      464KB

                    • memory/1308-150-0x0000000000340000-0x0000000000346000-memory.dmp

                      Filesize

                      24KB

                    • memory/1308-151-0x0000000000330000-0x000000000033C000-memory.dmp

                      Filesize

                      48KB

                    • memory/1344-160-0x0000000000E80000-0x0000000000E89000-memory.dmp

                      Filesize

                      36KB

                    • memory/1344-159-0x0000000000E90000-0x0000000000E95000-memory.dmp

                      Filesize

                      20KB

                    • memory/1516-114-0x0000000000400000-0x000000000040C000-memory.dmp

                      Filesize

                      48KB

                    • memory/1848-132-0x00000000003D0000-0x00000000003D7000-memory.dmp

                      Filesize

                      28KB

                    • memory/1848-133-0x00000000003C0000-0x00000000003CC000-memory.dmp

                      Filesize

                      48KB

                    • memory/1892-140-0x0000000000BA0000-0x0000000000BA9000-memory.dmp

                      Filesize

                      36KB

                    • memory/1892-141-0x0000000000B90000-0x0000000000B9F000-memory.dmp

                      Filesize

                      60KB

                    • memory/2124-173-0x0000000000580000-0x00000000006CA000-memory.dmp

                      Filesize

                      1.3MB

                    • memory/2288-117-0x0000000000550000-0x000000000069A000-memory.dmp

                      Filesize

                      1.3MB

                    • memory/2440-148-0x00000000004C0000-0x00000000004C9000-memory.dmp

                      Filesize

                      36KB

                    • memory/2440-147-0x00000000004D0000-0x00000000004D5000-memory.dmp

                      Filesize

                      20KB

                    • memory/3044-167-0x0000000000460000-0x00000000005AA000-memory.dmp

                      Filesize

                      1.3MB

                    • memory/3060-174-0x00000000004D0000-0x00000000004E7000-memory.dmp

                      Filesize

                      92KB

                    • memory/3060-118-0x0000000000480000-0x0000000000497000-memory.dmp

                      Filesize

                      92KB

                    • memory/3736-157-0x0000000000CD0000-0x0000000000CD9000-memory.dmp

                      Filesize

                      36KB

                    • memory/3736-156-0x0000000000CE0000-0x0000000000CE5000-memory.dmp

                      Filesize

                      20KB

                    • memory/3920-180-0x00000000004B0000-0x00000000005FA000-memory.dmp

                      Filesize

                      1.3MB

                    • memory/4004-153-0x0000000000FA0000-0x0000000000FA4000-memory.dmp

                      Filesize

                      16KB

                    • memory/4004-154-0x0000000000F90000-0x0000000000F99000-memory.dmp

                      Filesize

                      36KB

                    • memory/4056-125-0x00000000011E0000-0x00000000015D4000-memory.dmp

                      Filesize

                      4.0MB

                    • memory/4056-134-0x00000000776C0000-0x000000007784E000-memory.dmp

                      Filesize

                      1.6MB

                    • memory/4060-138-0x0000000000840000-0x000000000084B000-memory.dmp

                      Filesize

                      44KB

                    • memory/4060-137-0x0000000000850000-0x0000000000857000-memory.dmp

                      Filesize

                      28KB