Analysis

  • max time kernel
    300s
  • max time network
    180s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    08/03/2023, 03:56

General

  • Target

    a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc.exe

  • Size

    29KB

  • MD5

    1f2126ce6f8cc98a2159a33fa81b4285

  • SHA1

    aaf914b5e5f7d79ab387a07019033bb28c4f0956

  • SHA256

    a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc

  • SHA512

    621db8b88c8556c2dcd3401b38bb2b16d5cd75f54bc8fe8d1ed77ea699dd43776e3bb76c78bb86c1098951666b181808f0565e78666d534f0a469daac7c1f377

  • SSDEEP

    768:khafATBfqNGiP+x800ekJHwCukdqS+/td7N:cy2BfqNGMo/vpkQSOb7

Malware Config

Extracted

Family

smokeloader

Version

2022

C2

https://humman.art/

http://humman.art/

rc4.i32
rc4.i32

Signatures

  • Detects Smokeloader packer 6 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 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 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc.exe
    "C:\Users\Admin\AppData\Local\Temp\a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:3520
  • C:\Windows\SysWOW64\explorer.exe
    C:\Windows\SysWOW64\explorer.exe
    1⤵
      PID:4964
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe
      1⤵
        PID:60
      • C:\Windows\SysWOW64\explorer.exe
        C:\Windows\SysWOW64\explorer.exe
        1⤵
          PID:2132
        • C:\Windows\SysWOW64\explorer.exe
          C:\Windows\SysWOW64\explorer.exe
          1⤵
            PID:1644
          • C:\Windows\explorer.exe
            C:\Windows\explorer.exe
            1⤵
              PID:3888
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              1⤵
                PID:4620
              • C:\Users\Admin\AppData\Roaming\avrssia
                C:\Users\Admin\AppData\Roaming\avrssia
                1⤵
                • Executes dropped EXE
                • Checks SCSI registry key(s)
                • Suspicious behavior: MapViewOfSection
                PID:1396

              Network

                    MITRE ATT&CK Enterprise v6

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    • C:\Users\Admin\AppData\Roaming\avrssia

                      Filesize

                      29KB

                      MD5

                      1f2126ce6f8cc98a2159a33fa81b4285

                      SHA1

                      aaf914b5e5f7d79ab387a07019033bb28c4f0956

                      SHA256

                      a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc

                      SHA512

                      621db8b88c8556c2dcd3401b38bb2b16d5cd75f54bc8fe8d1ed77ea699dd43776e3bb76c78bb86c1098951666b181808f0565e78666d534f0a469daac7c1f377

                    • C:\Users\Admin\AppData\Roaming\avrssia

                      Filesize

                      29KB

                      MD5

                      1f2126ce6f8cc98a2159a33fa81b4285

                      SHA1

                      aaf914b5e5f7d79ab387a07019033bb28c4f0956

                      SHA256

                      a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc

                      SHA512

                      621db8b88c8556c2dcd3401b38bb2b16d5cd75f54bc8fe8d1ed77ea699dd43776e3bb76c78bb86c1098951666b181808f0565e78666d534f0a469daac7c1f377

                    • memory/60-136-0x0000000000620000-0x000000000062C000-memory.dmp

                      Filesize

                      48KB

                    • memory/60-133-0x0000000000620000-0x000000000062C000-memory.dmp

                      Filesize

                      48KB

                    • memory/60-150-0x0000000002F20000-0x0000000002F29000-memory.dmp

                      Filesize

                      36KB

                    • memory/60-135-0x0000000002F20000-0x0000000002F29000-memory.dmp

                      Filesize

                      36KB

                    • memory/1396-158-0x0000000000400000-0x0000000000409000-memory.dmp

                      Filesize

                      36KB

                    • memory/1396-156-0x0000000000400000-0x0000000000409000-memory.dmp

                      Filesize

                      36KB

                    • memory/1644-142-0x0000000003210000-0x000000000321B000-memory.dmp

                      Filesize

                      44KB

                    • memory/1644-140-0x0000000003210000-0x000000000321B000-memory.dmp

                      Filesize

                      44KB

                    • memory/1644-141-0x0000000003250000-0x0000000003277000-memory.dmp

                      Filesize

                      156KB

                    • memory/2132-151-0x0000000000620000-0x000000000062C000-memory.dmp

                      Filesize

                      48KB

                    • memory/2132-138-0x0000000000620000-0x000000000062C000-memory.dmp

                      Filesize

                      48KB

                    • memory/2132-139-0x0000000003250000-0x0000000003277000-memory.dmp

                      Filesize

                      156KB

                    • memory/2132-137-0x0000000003250000-0x0000000003277000-memory.dmp

                      Filesize

                      156KB

                    • memory/3236-120-0x0000000001100000-0x0000000001116000-memory.dmp

                      Filesize

                      88KB

                    • memory/3236-157-0x0000000001180000-0x0000000001196000-memory.dmp

                      Filesize

                      88KB

                    • memory/3520-119-0x0000000000400000-0x0000000000409000-memory.dmp

                      Filesize

                      36KB

                    • memory/3520-122-0x0000000000400000-0x0000000000409000-memory.dmp

                      Filesize

                      36KB

                    • memory/3888-152-0x0000000003210000-0x000000000321B000-memory.dmp

                      Filesize

                      44KB

                    • memory/3888-145-0x00000000005B0000-0x00000000005BD000-memory.dmp

                      Filesize

                      52KB

                    • memory/3888-144-0x0000000003210000-0x000000000321B000-memory.dmp

                      Filesize

                      44KB

                    • memory/3888-143-0x00000000005B0000-0x00000000005BD000-memory.dmp

                      Filesize

                      52KB

                    • memory/4620-148-0x0000000002F20000-0x0000000002F2B000-memory.dmp

                      Filesize

                      44KB

                    • memory/4620-147-0x00000000005B0000-0x00000000005BD000-memory.dmp

                      Filesize

                      52KB

                    • memory/4620-146-0x0000000002F20000-0x0000000002F2B000-memory.dmp

                      Filesize

                      44KB

                    • memory/4620-153-0x00000000005B0000-0x00000000005BD000-memory.dmp

                      Filesize

                      52KB

                    • memory/4964-149-0x0000000002F30000-0x0000000002F35000-memory.dmp

                      Filesize

                      20KB

                    • memory/4964-134-0x0000000002F20000-0x0000000002F29000-memory.dmp

                      Filesize

                      36KB

                    • memory/4964-132-0x0000000002F30000-0x0000000002F35000-memory.dmp

                      Filesize

                      20KB

                    • memory/4964-131-0x0000000002F20000-0x0000000002F29000-memory.dmp

                      Filesize

                      36KB