Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    04/01/2023, 17:58

General

  • Target

    09059579fa0be3ddbfdf362a25ec46f93ab5be37d1560877eb25e514e89ca0eb.exe

  • Size

    366KB

  • MD5

    51a8e88e45fea7e817c1e081fdc5872c

  • SHA1

    fb9294527eedb50291b871afb6c1a04fd0b60958

  • SHA256

    09059579fa0be3ddbfdf362a25ec46f93ab5be37d1560877eb25e514e89ca0eb

  • SHA512

    9fc0cc3d8f887044d68dec5f51255d10db6a7e9a6942219f726e38d9220b9d3b46190255e36f1cd2ebd2bf3f3c09cf2686fde80ea71e447f2debd574402b5c4d

  • SSDEEP

    6144:/MLl0SlaQbknIBSRF++zfcuoxupmLugx1jT:/MeSAnymrTLoxupmL5

Malware Config

Signatures

  • Detects Smokeloader packer 1 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Blocklisted process makes network request 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 20 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
  • Modifies registry class 36 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 18 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\09059579fa0be3ddbfdf362a25ec46f93ab5be37d1560877eb25e514e89ca0eb.exe
    "C:\Users\Admin\AppData\Local\Temp\09059579fa0be3ddbfdf362a25ec46f93ab5be37d1560877eb25e514e89ca0eb.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:4696
  • C:\Users\Admin\AppData\Local\Temp\148.exe
    C:\Users\Admin\AppData\Local\Temp\148.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:2648
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Oatedoqeryee.tmp",Yqiowyrat
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Checks processor information in registry
      • Suspicious use of WriteProcessMemory
      PID:2264
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 30899
        3⤵
        • Modifies registry class
        • Suspicious use of FindShellTrayWindow
        PID:4316
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:3168
    • C:\Users\Admin\AppData\Roaming\sjvvtuv
      C:\Users\Admin\AppData\Roaming\sjvvtuv
      1⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:4620

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\148.exe

      Filesize

      1.1MB

      MD5

      f9c31af1d6854c8650efda0c700cca67

      SHA1

      6843499c108bab4450fa9f75a0bc407447832a9d

      SHA256

      e4ccd8bb164af7558d5a1dc6621aaa328228a68c2e2f5f4d43ec02d4491b5d58

      SHA512

      06dd7dd90aaeacd84c5f8133ec2e3bab7263736db47e0eaaa1042d06c31b9a3223131f10d94b0f31c528c5e44aede9beec499f9281ac1142727bad4f11b6838e

    • C:\Users\Admin\AppData\Local\Temp\148.exe

      Filesize

      1.1MB

      MD5

      f9c31af1d6854c8650efda0c700cca67

      SHA1

      6843499c108bab4450fa9f75a0bc407447832a9d

      SHA256

      e4ccd8bb164af7558d5a1dc6621aaa328228a68c2e2f5f4d43ec02d4491b5d58

      SHA512

      06dd7dd90aaeacd84c5f8133ec2e3bab7263736db47e0eaaa1042d06c31b9a3223131f10d94b0f31c528c5e44aede9beec499f9281ac1142727bad4f11b6838e

    • C:\Users\Admin\AppData\Local\Temp\Oatedoqeryee.tmp

      Filesize

      718KB

      MD5

      86df455f98f9b6b06535d64a9cfd7006

      SHA1

      6d79d6464ce3eeb70de564652f9b99b09c5d3a22

      SHA256

      200911b8faaea3104d1b51231d534e615fe755dc84024c1029aeafe1f842206b

      SHA512

      249dac192d6c8023d4673a52d36cc4beecb899ab394f26e6812b3304075f427baba8b4b6a0cf4f6d4f50710eea8a0338d268b82a97a32632e18597c8eae1c426

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

      Filesize

      366KB

      MD5

      51a8e88e45fea7e817c1e081fdc5872c

      SHA1

      fb9294527eedb50291b871afb6c1a04fd0b60958

      SHA256

      09059579fa0be3ddbfdf362a25ec46f93ab5be37d1560877eb25e514e89ca0eb

      SHA512

      9fc0cc3d8f887044d68dec5f51255d10db6a7e9a6942219f726e38d9220b9d3b46190255e36f1cd2ebd2bf3f3c09cf2686fde80ea71e447f2debd574402b5c4d

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

      Filesize

      366KB

      MD5

      51a8e88e45fea7e817c1e081fdc5872c

      SHA1

      fb9294527eedb50291b871afb6c1a04fd0b60958

      SHA256

      09059579fa0be3ddbfdf362a25ec46f93ab5be37d1560877eb25e514e89ca0eb

      SHA512

      9fc0cc3d8f887044d68dec5f51255d10db6a7e9a6942219f726e38d9220b9d3b46190255e36f1cd2ebd2bf3f3c09cf2686fde80ea71e447f2debd574402b5c4d

    • \Users\Admin\AppData\Local\Temp\Oatedoqeryee.tmp

      Filesize

      718KB

      MD5

      86df455f98f9b6b06535d64a9cfd7006

      SHA1

      6d79d6464ce3eeb70de564652f9b99b09c5d3a22

      SHA256

      200911b8faaea3104d1b51231d534e615fe755dc84024c1029aeafe1f842206b

      SHA512

      249dac192d6c8023d4673a52d36cc4beecb899ab394f26e6812b3304075f427baba8b4b6a0cf4f6d4f50710eea8a0338d268b82a97a32632e18597c8eae1c426

    • memory/2264-323-0x0000000007D90000-0x00000000088B0000-memory.dmp

      Filesize

      11.1MB

    • memory/2264-320-0x0000000006399000-0x000000000639B000-memory.dmp

      Filesize

      8KB

    • memory/2264-306-0x0000000007D90000-0x00000000088B0000-memory.dmp

      Filesize

      11.1MB

    • memory/2648-187-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-178-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-171-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-204-0x0000000000400000-0x0000000002D07000-memory.dmp

      Filesize

      41.0MB

    • memory/2648-173-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-174-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-175-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-167-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-216-0x0000000000400000-0x0000000002D07000-memory.dmp

      Filesize

      41.0MB

    • memory/2648-170-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-197-0x0000000004AA0000-0x0000000004BAC000-memory.dmp

      Filesize

      1.0MB

    • memory/2648-196-0x0000000004970000-0x0000000004A48000-memory.dmp

      Filesize

      864KB

    • memory/2648-188-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-191-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-190-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-189-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-186-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-185-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-184-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-183-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-168-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-172-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-181-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-180-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-179-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-177-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-176-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-169-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-159-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-160-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-161-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-162-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-164-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-163-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/2648-165-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4316-321-0x00000000007B0000-0x0000000000A4D000-memory.dmp

      Filesize

      2.6MB

    • memory/4316-322-0x00000177A9C20000-0x00000177A9ECE000-memory.dmp

      Filesize

      2.7MB

    • memory/4620-359-0x0000000002E6A000-0x0000000002E7F000-memory.dmp

      Filesize

      84KB

    • memory/4620-360-0x0000000000400000-0x0000000002C4E000-memory.dmp

      Filesize

      40.3MB

    • memory/4620-361-0x0000000000400000-0x0000000002C4E000-memory.dmp

      Filesize

      40.3MB

    • memory/4696-150-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-130-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-131-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-129-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-156-0x0000000000400000-0x0000000002C4E000-memory.dmp

      Filesize

      40.3MB

    • memory/4696-155-0x0000000000400000-0x0000000002C4E000-memory.dmp

      Filesize

      40.3MB

    • memory/4696-154-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-153-0x0000000002D30000-0x0000000002D39000-memory.dmp

      Filesize

      36KB

    • memory/4696-152-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-151-0x0000000002D60000-0x0000000002EAA000-memory.dmp

      Filesize

      1.3MB

    • memory/4696-149-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-148-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-147-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-146-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-119-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-144-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-145-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-143-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-142-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-140-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-139-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-138-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-128-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-137-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-127-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-126-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-125-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-136-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-124-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-135-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-123-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-122-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-121-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-120-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-134-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-133-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB

    • memory/4696-132-0x0000000077740000-0x00000000778CE000-memory.dmp

      Filesize

      1.6MB