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Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/01/2023, 09:34

General

  • Target

    45bf21303f9887e7d5fdded6863ad58fb27f12c942fbf9aa81526e1ee1cb80e9.exe

  • Size

    241KB

  • MD5

    855e40d84bcaab2684a1a364bf737a5a

  • SHA1

    69cc4484578ca23b58202ec7aab85dcaa547b6c3

  • SHA256

    45bf21303f9887e7d5fdded6863ad58fb27f12c942fbf9aa81526e1ee1cb80e9

  • SHA512

    20049af9bfa346a4788885585552627aa13c5d66eb92a5a45aea0e43cf3d34e954974ecc10730fe30de8f8c3e87b32a4c22643a5557c33e1b13f59408a2cae41

  • SSDEEP

    3072:/XcX90LDcPFd9Rinc5kPUslXuYagLvMxVSAlmqcBxRt27hZY:vHL01m3t3t7Mi/73IZY

Malware Config

Signatures

  • Detects Smokeloader packer 1 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Program crash 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 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\45bf21303f9887e7d5fdded6863ad58fb27f12c942fbf9aa81526e1ee1cb80e9.exe
    "C:\Users\Admin\AppData\Local\Temp\45bf21303f9887e7d5fdded6863ad58fb27f12c942fbf9aa81526e1ee1cb80e9.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:832
  • C:\Users\Admin\AppData\Local\Temp\FA14.exe
    C:\Users\Admin\AppData\Local\Temp\FA14.exe
    1⤵
    • Executes dropped EXE
    PID:4960
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4960 -s 292
      2⤵
      • Program crash
      PID:4228
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4960 -ip 4960
    1⤵
      PID:4476

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\FA14.exe

      Filesize

      6.6MB

      MD5

      54d9e0d0e95913dca13615df1562c015

      SHA1

      9d869586c21f1af71000ead98515c5d6424ca5ec

      SHA256

      10924f8adaf8d51722d2413076ca8425c0ef34ca311e3023e2bfb7fefb3fdfad

      SHA512

      60cf6c85045c9f869a19de7ca8d45edfe8329409f4ea5adc13d7bc856eca0bee823f6f05b888bcd495f7d20ec6eeb3fab92b4d5de27e66b197978831404e5ff4

    • C:\Users\Admin\AppData\Local\Temp\FA14.exe

      Filesize

      6.6MB

      MD5

      54d9e0d0e95913dca13615df1562c015

      SHA1

      9d869586c21f1af71000ead98515c5d6424ca5ec

      SHA256

      10924f8adaf8d51722d2413076ca8425c0ef34ca311e3023e2bfb7fefb3fdfad

      SHA512

      60cf6c85045c9f869a19de7ca8d45edfe8329409f4ea5adc13d7bc856eca0bee823f6f05b888bcd495f7d20ec6eeb3fab92b4d5de27e66b197978831404e5ff4

    • memory/832-132-0x000000000074E000-0x000000000075F000-memory.dmp

      Filesize

      68KB

    • memory/832-133-0x00000000006F0000-0x00000000006F9000-memory.dmp

      Filesize

      36KB

    • memory/832-134-0x0000000000400000-0x0000000000459000-memory.dmp

      Filesize

      356KB

    • memory/832-135-0x0000000000400000-0x0000000000459000-memory.dmp

      Filesize

      356KB

    • memory/4960-139-0x0000000002B1B000-0x0000000003191000-memory.dmp

      Filesize

      6.5MB

    • memory/4960-140-0x00000000031A0000-0x0000000003A63000-memory.dmp

      Filesize

      8.8MB

    • memory/4960-141-0x0000000000400000-0x0000000000CD0000-memory.dmp

      Filesize

      8.8MB