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Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/09/2023, 21:46

General

  • Target

    8f4138f048c56d9f60a0753d1afabff5ce1ba8873eefea51361b7f16cbcd23df.exe

  • Size

    219KB

  • MD5

    400267243cc5ef6248971103ccb9e917

  • SHA1

    e8c0db79536e7d8fe656ecbf656d6a807879d843

  • SHA256

    8f4138f048c56d9f60a0753d1afabff5ce1ba8873eefea51361b7f16cbcd23df

  • SHA512

    f110cd862f2a6293731ad7b5025a30fe4baba092287ee85c65d08c8bedcda711bcce75da117f3a7abdbd812b6a62945796b70928b82d0aff95177df679fd3681

  • SSDEEP

    3072:woiRZjNmm+ItXdcz4q7kn6YjfpIfQKkJ/955/dYTPig3:0NV+/MYu6YjfpIfQ//ddYTPi

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

Extracted

Family

smokeloader

Version

2020

C2

http://host-file-host6.com/

http://host-host-file8.com/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • 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.

  • Modifies registry class 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 19 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 6 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\8f4138f048c56d9f60a0753d1afabff5ce1ba8873eefea51361b7f16cbcd23df.exe
    "C:\Users\Admin\AppData\Local\Temp\8f4138f048c56d9f60a0753d1afabff5ce1ba8873eefea51361b7f16cbcd23df.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4572
    • C:\Users\Admin\AppData\Local\Temp\8f4138f048c56d9f60a0753d1afabff5ce1ba8873eefea51361b7f16cbcd23df.exe
      "C:\Users\Admin\AppData\Local\Temp\8f4138f048c56d9f60a0753d1afabff5ce1ba8873eefea51361b7f16cbcd23df.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:60
  • C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
    1⤵
      PID:4660
    • C:\Windows\System32\svchost.exe
      C:\Windows\System32\svchost.exe -k UnistackSvcGroup
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:800

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/60-7-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/60-2-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/60-3-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/60-4-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/776-6-0x00000000030F0000-0x0000000003106000-memory.dmp

      Filesize

      88KB

    • memory/800-49-0x000001EAADE30000-0x000001EAADE31000-memory.dmp

      Filesize

      4KB

    • memory/800-14-0x000001EAA5990000-0x000001EAA59A0000-memory.dmp

      Filesize

      64KB

    • memory/800-30-0x000001EAA5A90000-0x000001EAA5AA0000-memory.dmp

      Filesize

      64KB

    • memory/800-46-0x000001EAADE00000-0x000001EAADE01000-memory.dmp

      Filesize

      4KB

    • memory/800-48-0x000001EAADE30000-0x000001EAADE31000-memory.dmp

      Filesize

      4KB

    • memory/800-50-0x000001EAADF40000-0x000001EAADF41000-memory.dmp

      Filesize

      4KB

    • memory/4572-0-0x00000000006F0000-0x0000000000705000-memory.dmp

      Filesize

      84KB

    • memory/4572-1-0x0000000000710000-0x0000000000719000-memory.dmp

      Filesize

      36KB

    • memory/4572-5-0x00000000006F0000-0x0000000000705000-memory.dmp

      Filesize

      84KB