Analysis

  • max time kernel
    155s
  • max time network
    133s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    06-12-2022 15:12

General

  • Target

    1785f599349534a2fa4404c78eced25cac3f64f7302a29edfdea1805e3111bd3.exe

  • Size

    377KB

  • MD5

    ead788475cddadd1e3ea61b03b88658e

  • SHA1

    bdc7eb87959adee4c61f4ef1bc7ac2af7c21d6f0

  • SHA256

    1785f599349534a2fa4404c78eced25cac3f64f7302a29edfdea1805e3111bd3

  • SHA512

    e66a98a1ca9ace31d123a138ac7a8bbbdb97603e47cca30fdc20e9dc81e70fce829e35b5cf569b59a5582833d7e63049895ea00d534a6f131307e4dafc680e9c

  • SSDEEP

    6144:u7fA9wLrgh3KuGW5PxYg0pkhPSByiglP0rNPMk:ujAKYpKqFmg0+SyzlP0r

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 1 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 3 IoCs

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

  • Checks processor information in registry 2 TTPs 25 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 1 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\1785f599349534a2fa4404c78eced25cac3f64f7302a29edfdea1805e3111bd3.exe
    "C:\Users\Admin\AppData\Local\Temp\1785f599349534a2fa4404c78eced25cac3f64f7302a29edfdea1805e3111bd3.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:2500
  • C:\Users\Admin\AppData\Local\Temp\79B4.exe
    C:\Users\Admin\AppData\Local\Temp\79B4.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:4656
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Eshwsfeuryqqffi.tmp",Qiysidaatietut
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Checks processor information in registry
      • Suspicious use of WriteProcessMemory
      PID:1132
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 17222
        3⤵
        • Modifies registry class
        • Suspicious use of FindShellTrayWindow
        PID:2560
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:3948

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\79B4.exe

      Filesize

      1.2MB

      MD5

      2ebd638054fa878e678c1690ef6c03c1

      SHA1

      475445e4f552ad1b0f68eb94c4fe75578d87a54a

      SHA256

      98b60a8b6368eaeb4a0566874b3a9c3ada537dbd9b6971578ba01ef811b40fdd

      SHA512

      97e5ce49c18f88c4068ea4abb13e13cb0b23b95eeaf642b9132005d1bbf9564e4a40461a16588c43c6055c31bb67b5d1e4e8bb8a07ab51dcf4ab8df82377fc16

    • C:\Users\Admin\AppData\Local\Temp\79B4.exe

      Filesize

      1.2MB

      MD5

      2ebd638054fa878e678c1690ef6c03c1

      SHA1

      475445e4f552ad1b0f68eb94c4fe75578d87a54a

      SHA256

      98b60a8b6368eaeb4a0566874b3a9c3ada537dbd9b6971578ba01ef811b40fdd

      SHA512

      97e5ce49c18f88c4068ea4abb13e13cb0b23b95eeaf642b9132005d1bbf9564e4a40461a16588c43c6055c31bb67b5d1e4e8bb8a07ab51dcf4ab8df82377fc16

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

      Filesize

      768KB

      MD5

      96655ec3277ef2e9ea4b5723f60f5b04

      SHA1

      b29e9005cedc5e0d63981e59b05a12f006bd8640

      SHA256

      36cb491e91dc40d4a24f25944c5dca41195e1e7eb9788028f72e38b08789616d

      SHA512

      cb151e071426cba0ec433b4ff8b173a9e07fc922e2b9d9d9359bcd5367a79e5bb996e8afbbfe4dd11bde1a33724b7f70479ac248762f5c9d17f3e0d7d67c151c

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

      Filesize

      768KB

      MD5

      96655ec3277ef2e9ea4b5723f60f5b04

      SHA1

      b29e9005cedc5e0d63981e59b05a12f006bd8640

      SHA256

      36cb491e91dc40d4a24f25944c5dca41195e1e7eb9788028f72e38b08789616d

      SHA512

      cb151e071426cba0ec433b4ff8b173a9e07fc922e2b9d9d9359bcd5367a79e5bb996e8afbbfe4dd11bde1a33724b7f70479ac248762f5c9d17f3e0d7d67c151c

    • memory/1132-318-0x00000000068A0000-0x0000000007402000-memory.dmp

      Filesize

      11.4MB

    • memory/1132-299-0x00000000068A0000-0x0000000007402000-memory.dmp

      Filesize

      11.4MB

    • memory/2500-153-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

    • memory/2500-139-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-121-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-122-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-123-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-125-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-126-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-127-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-128-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-129-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-130-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-131-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-132-0x0000000000470000-0x000000000051E000-memory.dmp

      Filesize

      696KB

    • memory/2500-133-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-134-0x0000000000030000-0x0000000000039000-memory.dmp

      Filesize

      36KB

    • memory/2500-135-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

    • memory/2500-136-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-137-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-138-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-118-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-141-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-140-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-142-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-143-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-144-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-145-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-146-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-147-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-148-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-150-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-149-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-151-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-152-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-119-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-117-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2500-120-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/2560-314-0x0000000000250000-0x00000000004E3000-memory.dmp

      Filesize

      2.6MB

    • memory/2560-317-0x000001A01F550000-0x000001A01F7F5000-memory.dmp

      Filesize

      2.6MB

    • memory/4656-172-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-161-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-162-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-165-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-166-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-167-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-168-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-169-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-170-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-157-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-171-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-173-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-175-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-174-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-176-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-177-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-178-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-179-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-180-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-181-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-182-0x0000000000730000-0x0000000000818000-memory.dmp

      Filesize

      928KB

    • memory/4656-184-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-185-0x0000000000400000-0x000000000052E000-memory.dmp

      Filesize

      1.2MB

    • memory/4656-183-0x0000000000880000-0x00000000009A0000-memory.dmp

      Filesize

      1.1MB

    • memory/4656-186-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-159-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-189-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-190-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-191-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-192-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-160-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-188-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-156-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-158-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-187-0x0000000077580000-0x000000007770E000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-234-0x0000000000400000-0x000000000052E000-memory.dmp

      Filesize

      1.2MB