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Analysis

  • max time kernel
    1802s
  • max time network
    1445s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    12-07-2021 16:55

General

  • Target

    toolspab2 (10).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.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 18 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\toolspab2 (10).exe
    "C:\Users\Admin\AppData\Local\Temp\toolspab2 (10).exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:804
    • C:\Users\Admin\AppData\Local\Temp\toolspab2 (10).exe
      "C:\Users\Admin\AppData\Local\Temp\toolspab2 (10).exe"
      2⤵
      • Loads dropped DLL
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:504
  • C:\Users\Admin\AppData\Local\Temp\1BD6.exe
    C:\Users\Admin\AppData\Local\Temp\1BD6.exe
    1⤵
    • Executes dropped EXE
    PID:2792
  • C:\Users\Admin\AppData\Local\Temp\1F71.exe
    C:\Users\Admin\AppData\Local\Temp\1F71.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of WriteProcessMemory
    PID:3332
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\1F71.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3876
      • C:\Windows\SysWOW64\timeout.exe
        timeout /T 10 /NOBREAK
        3⤵
        • Delays execution with timeout.exe
        PID:3260
  • C:\Windows\SysWOW64\explorer.exe
    C:\Windows\SysWOW64\explorer.exe
    1⤵
      PID:2152
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe
      1⤵
        PID:3840
      • C:\Windows\SysWOW64\explorer.exe
        C:\Windows\SysWOW64\explorer.exe
        1⤵
          PID:1820
        • C:\Windows\explorer.exe
          C:\Windows\explorer.exe
          1⤵
            PID:3732
          • C:\Windows\SysWOW64\explorer.exe
            C:\Windows\SysWOW64\explorer.exe
            1⤵
              PID:2888
            • C:\Windows\explorer.exe
              C:\Windows\explorer.exe
              1⤵
                PID:4084
              • C:\Windows\SysWOW64\explorer.exe
                C:\Windows\SysWOW64\explorer.exe
                1⤵
                  PID:1136
                • C:\Windows\explorer.exe
                  C:\Windows\explorer.exe
                  1⤵
                    PID:2308
                  • C:\Windows\SysWOW64\explorer.exe
                    C:\Windows\SysWOW64\explorer.exe
                    1⤵
                      PID:1448
                    • C:\Users\Admin\AppData\Roaming\cfaecer
                      C:\Users\Admin\AppData\Roaming\cfaecer
                      1⤵
                      • Executes dropped EXE
                      • Suspicious use of SetThreadContext
                      • Suspicious use of WriteProcessMemory
                      PID:3840
                      • C:\Users\Admin\AppData\Roaming\cfaecer
                        C:\Users\Admin\AppData\Roaming\cfaecer
                        2⤵
                        • Executes dropped EXE
                        PID:2192
                    • C:\Users\Admin\AppData\Roaming\cfaecer
                      C:\Users\Admin\AppData\Roaming\cfaecer
                      1⤵
                      • Executes dropped EXE
                      • Suspicious use of SetThreadContext
                      • Suspicious use of WriteProcessMemory
                      PID:572
                      • C:\Users\Admin\AppData\Roaming\cfaecer
                        C:\Users\Admin\AppData\Roaming\cfaecer
                        2⤵
                        • Executes dropped EXE
                        • Loads dropped DLL
                        • Checks SCSI registry key(s)
                        • Suspicious behavior: MapViewOfSection
                        PID:3188
                    • C:\Users\Admin\AppData\Roaming\cfaecer
                      C:\Users\Admin\AppData\Roaming\cfaecer
                      1⤵
                      • Executes dropped EXE
                      • Suspicious use of SetThreadContext
                      • Suspicious use of WriteProcessMemory
                      PID:3172
                      • C:\Users\Admin\AppData\Roaming\cfaecer
                        C:\Users\Admin\AppData\Roaming\cfaecer
                        2⤵
                        • Executes dropped EXE
                        PID:3164

                    Network

                    MITRE ATT&CK Enterprise v6

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    • memory/504-115-0x0000000000400000-0x000000000040C000-memory.dmp

                      Filesize

                      48KB

                    • memory/572-175-0x0000000000580000-0x00000000006CA000-memory.dmp

                      Filesize

                      1.3MB

                    • memory/804-114-0x0000000000500000-0x000000000064A000-memory.dmp

                      Filesize

                      1.3MB

                    • memory/1136-156-0x0000000000160000-0x0000000000169000-memory.dmp

                      Filesize

                      36KB

                    • memory/1136-155-0x0000000000170000-0x0000000000174000-memory.dmp

                      Filesize

                      16KB

                    • memory/1448-161-0x00000000004D0000-0x00000000004D5000-memory.dmp

                      Filesize

                      20KB

                    • memory/1448-162-0x00000000004C0000-0x00000000004C9000-memory.dmp

                      Filesize

                      36KB

                    • memory/1820-137-0x00000000001E0000-0x00000000001E7000-memory.dmp

                      Filesize

                      28KB

                    • memory/1820-138-0x00000000001D0000-0x00000000001DB000-memory.dmp

                      Filesize

                      44KB

                    • memory/2152-128-0x0000000000910000-0x0000000000984000-memory.dmp

                      Filesize

                      464KB

                    • memory/2152-129-0x00000000008A0000-0x000000000090B000-memory.dmp

                      Filesize

                      428KB

                    • memory/2308-159-0x0000000000540000-0x0000000000549000-memory.dmp

                      Filesize

                      36KB

                    • memory/2308-158-0x0000000000550000-0x0000000000555000-memory.dmp

                      Filesize

                      20KB

                    • memory/2792-131-0x0000000002D30000-0x0000000002E7A000-memory.dmp

                      Filesize

                      1.3MB

                    • memory/2792-134-0x0000000000400000-0x0000000002C3C000-memory.dmp

                      Filesize

                      40.2MB

                    • memory/2888-147-0x0000000000390000-0x0000000000395000-memory.dmp

                      Filesize

                      20KB

                    • memory/2888-148-0x0000000000380000-0x0000000000389000-memory.dmp

                      Filesize

                      36KB

                    • memory/3044-118-0x0000000000F90000-0x0000000000FA7000-memory.dmp

                      Filesize

                      92KB

                    • memory/3044-176-0x0000000002C70000-0x0000000002C87000-memory.dmp

                      Filesize

                      92KB

                    • memory/3172-182-0x00000000004B0000-0x00000000004BC000-memory.dmp

                      Filesize

                      48KB

                    • memory/3332-125-0x0000000000EE0000-0x00000000012D4000-memory.dmp

                      Filesize

                      4.0MB

                    • memory/3332-127-0x0000000076EA0000-0x000000007702E000-memory.dmp

                      Filesize

                      1.6MB

                    • memory/3732-140-0x0000000000F00000-0x0000000000F09000-memory.dmp

                      Filesize

                      36KB

                    • memory/3732-141-0x0000000000EF0000-0x0000000000EFF000-memory.dmp

                      Filesize

                      60KB

                    • memory/3840-132-0x00000000009F0000-0x00000000009F7000-memory.dmp

                      Filesize

                      28KB

                    • memory/3840-169-0x0000000000590000-0x00000000006DA000-memory.dmp

                      Filesize

                      1.3MB

                    • memory/3840-133-0x00000000009E0000-0x00000000009EC000-memory.dmp

                      Filesize

                      48KB

                    • memory/4084-152-0x0000000000DC0000-0x0000000000DC6000-memory.dmp

                      Filesize

                      24KB

                    • memory/4084-153-0x0000000000DB0000-0x0000000000DBC000-memory.dmp

                      Filesize

                      48KB