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Analysis

  • max time kernel
    150s
  • max time network
    86s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    08/07/2021, 13:30

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.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 6 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 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 19 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 44 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:656
    • 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:3468
  • C:\Users\Admin\AppData\Local\Temp\E380.exe
    C:\Users\Admin\AppData\Local\Temp\E380.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    PID:2216
  • C:\Users\Admin\AppData\Local\Temp\E611.exe
    C:\Users\Admin\AppData\Local\Temp\E611.exe
    1⤵
    • Executes dropped EXE
    PID:1504
  • C:\Windows\SysWOW64\explorer.exe
    C:\Windows\SysWOW64\explorer.exe
    1⤵
      PID:2648
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe
      1⤵
        PID:1308
      • C:\Windows\SysWOW64\explorer.exe
        C:\Windows\SysWOW64\explorer.exe
        1⤵
          PID:688
        • C:\Windows\explorer.exe
          C:\Windows\explorer.exe
          1⤵
            PID:2164
          • C:\Windows\SysWOW64\explorer.exe
            C:\Windows\SysWOW64\explorer.exe
            1⤵
              PID:1216
            • C:\Windows\explorer.exe
              C:\Windows\explorer.exe
              1⤵
                PID:2444
              • C:\Windows\SysWOW64\explorer.exe
                C:\Windows\SysWOW64\explorer.exe
                1⤵
                  PID:660
                • C:\Windows\explorer.exe
                  C:\Windows\explorer.exe
                  1⤵
                    PID:2100
                  • C:\Windows\SysWOW64\explorer.exe
                    C:\Windows\SysWOW64\explorer.exe
                    1⤵
                      PID:3744

                    Network

                    MITRE ATT&CK Enterprise v6

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    • memory/656-117-0x0000000000460000-0x000000000050E000-memory.dmp

                      Filesize

                      696KB

                    • memory/660-153-0x00000000030A0000-0x00000000030A9000-memory.dmp

                      Filesize

                      36KB

                    • memory/660-152-0x00000000030B0000-0x00000000030B4000-memory.dmp

                      Filesize

                      16KB

                    • memory/688-133-0x0000000002F20000-0x0000000002F27000-memory.dmp

                      Filesize

                      28KB

                    • memory/688-134-0x0000000002F10000-0x0000000002F1B000-memory.dmp

                      Filesize

                      44KB

                    • memory/1216-142-0x00000000006A0000-0x00000000006A5000-memory.dmp

                      Filesize

                      20KB

                    • memory/1216-143-0x0000000000690000-0x0000000000699000-memory.dmp

                      Filesize

                      36KB

                    • memory/1308-131-0x0000000000B30000-0x0000000000B3C000-memory.dmp

                      Filesize

                      48KB

                    • memory/1308-130-0x0000000000B40000-0x0000000000B47000-memory.dmp

                      Filesize

                      28KB

                    • memory/1504-140-0x0000000000400000-0x000000000049E000-memory.dmp

                      Filesize

                      632KB

                    • memory/2100-158-0x0000000000E80000-0x0000000000E89000-memory.dmp

                      Filesize

                      36KB

                    • memory/2100-157-0x0000000000E90000-0x0000000000E95000-memory.dmp

                      Filesize

                      20KB

                    • memory/2164-136-0x00000000009F0000-0x00000000009F9000-memory.dmp

                      Filesize

                      36KB

                    • memory/2164-137-0x00000000009E0000-0x00000000009EF000-memory.dmp

                      Filesize

                      60KB

                    • memory/2216-139-0x0000000001FC0000-0x0000000002051000-memory.dmp

                      Filesize

                      580KB

                    • memory/2444-147-0x0000000000EA0000-0x0000000000EA6000-memory.dmp

                      Filesize

                      24KB

                    • memory/2444-148-0x0000000000E90000-0x0000000000E9C000-memory.dmp

                      Filesize

                      48KB

                    • memory/2648-129-0x0000000002F10000-0x0000000002F7B000-memory.dmp

                      Filesize

                      428KB

                    • memory/2648-128-0x0000000002F80000-0x0000000002FF4000-memory.dmp

                      Filesize

                      464KB

                    • memory/3020-119-0x00000000008E0000-0x00000000008F7000-memory.dmp

                      Filesize

                      92KB

                    • memory/3468-114-0x0000000000400000-0x000000000040C000-memory.dmp

                      Filesize

                      48KB

                    • memory/3744-161-0x00000000030A0000-0x00000000030A9000-memory.dmp

                      Filesize

                      36KB

                    • memory/3744-160-0x00000000030B0000-0x00000000030B5000-memory.dmp

                      Filesize

                      20KB