Resubmissions

12-07-2021 16:55

210712-cvz622xsbj 10

10-07-2021 13:25

210710-pdfh7kft96 10

09-07-2021 23:00

210709-hewxkm1xlj 10

09-07-2021 16:08

210709-5ql27kyjqa 10

09-07-2021 14:08

210709-pt977a4bhe 10

08-07-2021 22:09

210708-3ypfnj5j7x 10

08-07-2021 13:30

210708-4hsk7y9f2x 10

08-07-2021 12:14

210708-8t5f9z9egj 10

Analysis

  • max time kernel
    1800s
  • max time network
    1454s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    12-07-2021 16:55

General

  • Target

    toolspab2 (17).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 UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\toolspab2 (17).exe
    "C:\Users\Admin\AppData\Local\Temp\toolspab2 (17).exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3008
    • C:\Users\Admin\AppData\Local\Temp\toolspab2 (17).exe
      "C:\Users\Admin\AppData\Local\Temp\toolspab2 (17).exe"
      2⤵
      • Loads dropped DLL
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:3568
  • C:\Users\Admin\AppData\Local\Temp\ADE.exe
    C:\Users\Admin\AppData\Local\Temp\ADE.exe
    1⤵
    • Executes dropped EXE
    PID:1176
  • C:\Users\Admin\AppData\Local\Temp\E88.exe
    C:\Users\Admin\AppData\Local\Temp\E88.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:1484
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\E88.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2944
      • C:\Windows\SysWOW64\timeout.exe
        timeout /T 10 /NOBREAK
        3⤵
        • Delays execution with timeout.exe
        PID:3120
  • C:\Windows\SysWOW64\explorer.exe
    C:\Windows\SysWOW64\explorer.exe
    1⤵
      PID:3000
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe
      1⤵
        PID:3488
      • C:\Windows\SysWOW64\explorer.exe
        C:\Windows\SysWOW64\explorer.exe
        1⤵
          PID:3008
        • C:\Windows\explorer.exe
          C:\Windows\explorer.exe
          1⤵
            PID:2732
          • C:\Windows\SysWOW64\explorer.exe
            C:\Windows\SysWOW64\explorer.exe
            1⤵
              PID:3476
            • C:\Windows\explorer.exe
              C:\Windows\explorer.exe
              1⤵
                PID:3736
              • C:\Windows\SysWOW64\explorer.exe
                C:\Windows\SysWOW64\explorer.exe
                1⤵
                  PID:2660
                • C:\Windows\explorer.exe
                  C:\Windows\explorer.exe
                  1⤵
                    PID:2180
                  • C:\Windows\SysWOW64\explorer.exe
                    C:\Windows\SysWOW64\explorer.exe
                    1⤵
                      PID:208
                    • C:\Users\Admin\AppData\Roaming\rvrwdhb
                      C:\Users\Admin\AppData\Roaming\rvrwdhb
                      1⤵
                      • Executes dropped EXE
                      • Suspicious use of SetThreadContext
                      • Suspicious use of WriteProcessMemory
                      PID:3432
                      • C:\Users\Admin\AppData\Roaming\rvrwdhb
                        C:\Users\Admin\AppData\Roaming\rvrwdhb
                        2⤵
                        • Executes dropped EXE
                        PID:2240
                    • C:\Users\Admin\AppData\Roaming\rvrwdhb
                      C:\Users\Admin\AppData\Roaming\rvrwdhb
                      1⤵
                      • Executes dropped EXE
                      • Suspicious use of SetThreadContext
                      • Suspicious use of WriteProcessMemory
                      PID:2244
                      • C:\Users\Admin\AppData\Roaming\rvrwdhb
                        C:\Users\Admin\AppData\Roaming\rvrwdhb
                        2⤵
                        • Executes dropped EXE
                        • Loads dropped DLL
                        • Checks SCSI registry key(s)
                        • Suspicious behavior: MapViewOfSection
                        PID:2096
                    • C:\Users\Admin\AppData\Roaming\rvrwdhb
                      C:\Users\Admin\AppData\Roaming\rvrwdhb
                      1⤵
                      • Executes dropped EXE
                      • Suspicious use of SetThreadContext
                      • Suspicious use of WriteProcessMemory
                      PID:740
                      • C:\Users\Admin\AppData\Roaming\rvrwdhb
                        C:\Users\Admin\AppData\Roaming\rvrwdhb
                        2⤵
                        • Executes dropped EXE
                        PID:1332

                    Network

                    MITRE ATT&CK Enterprise v6

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    • memory/208-162-0x00000000004D0000-0x00000000004D9000-memory.dmp

                      Filesize

                      36KB

                    • memory/208-161-0x00000000004E0000-0x00000000004E5000-memory.dmp

                      Filesize

                      20KB

                    • memory/1176-133-0x0000000000400000-0x0000000002C3C000-memory.dmp

                      Filesize

                      40.2MB

                    • memory/1176-128-0x0000000002D50000-0x0000000002E9A000-memory.dmp

                      Filesize

                      1.3MB

                    • memory/1484-127-0x00000000771E0000-0x000000007736E000-memory.dmp

                      Filesize

                      1.6MB

                    • memory/1484-125-0x0000000001120000-0x0000000001514000-memory.dmp

                      Filesize

                      4.0MB

                    • memory/2180-158-0x0000000000AC0000-0x0000000000AC5000-memory.dmp

                      Filesize

                      20KB

                    • memory/2180-159-0x0000000000AB0000-0x0000000000AB9000-memory.dmp

                      Filesize

                      36KB

                    • memory/2244-175-0x0000000000460000-0x000000000050E000-memory.dmp

                      Filesize

                      696KB

                    • memory/2660-156-0x0000000000A00000-0x0000000000A09000-memory.dmp

                      Filesize

                      36KB

                    • memory/2660-155-0x0000000000A10000-0x0000000000A14000-memory.dmp

                      Filesize

                      16KB

                    • memory/2732-145-0x0000000000E90000-0x0000000000E9F000-memory.dmp

                      Filesize

                      60KB

                    • memory/2732-144-0x0000000000EA0000-0x0000000000EA9000-memory.dmp

                      Filesize

                      36KB

                    • memory/3000-130-0x0000000000310000-0x000000000037B000-memory.dmp

                      Filesize

                      428KB

                    • memory/3000-129-0x0000000000380000-0x00000000003F4000-memory.dmp

                      Filesize

                      464KB

                    • memory/3008-117-0x0000000000460000-0x000000000050E000-memory.dmp

                      Filesize

                      696KB

                    • memory/3008-142-0x0000000000560000-0x000000000056B000-memory.dmp

                      Filesize

                      44KB

                    • memory/3008-140-0x0000000000570000-0x0000000000577000-memory.dmp

                      Filesize

                      28KB

                    • memory/3020-118-0x0000000000650000-0x0000000000667000-memory.dmp

                      Filesize

                      92KB

                    • memory/3020-176-0x00000000006A0000-0x00000000006B7000-memory.dmp

                      Filesize

                      92KB

                    • memory/3432-169-0x00000000004B0000-0x00000000004BC000-memory.dmp

                      Filesize

                      48KB

                    • memory/3476-150-0x0000000000E30000-0x0000000000E39000-memory.dmp

                      Filesize

                      36KB

                    • memory/3476-149-0x0000000000E40000-0x0000000000E45000-memory.dmp

                      Filesize

                      20KB

                    • memory/3488-135-0x0000000000EF0000-0x0000000000EFC000-memory.dmp

                      Filesize

                      48KB

                    • memory/3488-134-0x0000000000F00000-0x0000000000F07000-memory.dmp

                      Filesize

                      28KB

                    • memory/3568-114-0x0000000000400000-0x000000000040C000-memory.dmp

                      Filesize

                      48KB

                    • memory/3736-152-0x0000000000DF0000-0x0000000000DF6000-memory.dmp

                      Filesize

                      24KB

                    • memory/3736-153-0x0000000000DE0000-0x0000000000DEC000-memory.dmp

                      Filesize

                      48KB