Analysis

  • max time kernel
    158s
  • max time network
    131s
  • platform
    windows10-1703_x64
  • resource
    win10-20230915-en
  • resource tags

    arch:x64arch:x86image:win10-20230915-enlocale:en-usos:windows10-1703-x64system
  • submitted
    23/09/2023, 07:49

General

  • Target

    f76c96aea2f3809cc73e1d3ee497bc1abdbe2657e870844f8714cd11432e129e.exe

  • Size

    321KB

  • MD5

    25bf7b154a13bb7f14a809bfb3f37632

  • SHA1

    a9b28f347faf641dbd7ec6014e7ffb49471be325

  • SHA256

    f76c96aea2f3809cc73e1d3ee497bc1abdbe2657e870844f8714cd11432e129e

  • SHA512

    192b7cdf91bc68d88943aea1a4e7a7268af41298615099c1ee52c91beb643f4b57dce087b16670607cca9c23cab27d968060c6f020d63068906619d7b3c2b505

  • SSDEEP

    6144:+T0DQh/Ok7CUm9jSlMB4foz07IWyprLi:+wDK2k7C79WfC0a5

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.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Suspicious use of SetThreadContext 2 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 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\f76c96aea2f3809cc73e1d3ee497bc1abdbe2657e870844f8714cd11432e129e.exe
    "C:\Users\Admin\AppData\Local\Temp\f76c96aea2f3809cc73e1d3ee497bc1abdbe2657e870844f8714cd11432e129e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2464
    • C:\Users\Admin\AppData\Local\Temp\f76c96aea2f3809cc73e1d3ee497bc1abdbe2657e870844f8714cd11432e129e.exe
      "C:\Users\Admin\AppData\Local\Temp\f76c96aea2f3809cc73e1d3ee497bc1abdbe2657e870844f8714cd11432e129e.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:2288
  • C:\Users\Admin\AppData\Roaming\vbiwvhb
    C:\Users\Admin\AppData\Roaming\vbiwvhb
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4624
    • C:\Users\Admin\AppData\Roaming\vbiwvhb
      C:\Users\Admin\AppData\Roaming\vbiwvhb
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:3396

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          321KB

          MD5

          25bf7b154a13bb7f14a809bfb3f37632

          SHA1

          a9b28f347faf641dbd7ec6014e7ffb49471be325

          SHA256

          f76c96aea2f3809cc73e1d3ee497bc1abdbe2657e870844f8714cd11432e129e

          SHA512

          192b7cdf91bc68d88943aea1a4e7a7268af41298615099c1ee52c91beb643f4b57dce087b16670607cca9c23cab27d968060c6f020d63068906619d7b3c2b505

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

          Filesize

          321KB

          MD5

          25bf7b154a13bb7f14a809bfb3f37632

          SHA1

          a9b28f347faf641dbd7ec6014e7ffb49471be325

          SHA256

          f76c96aea2f3809cc73e1d3ee497bc1abdbe2657e870844f8714cd11432e129e

          SHA512

          192b7cdf91bc68d88943aea1a4e7a7268af41298615099c1ee52c91beb643f4b57dce087b16670607cca9c23cab27d968060c6f020d63068906619d7b3c2b505

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

          Filesize

          321KB

          MD5

          25bf7b154a13bb7f14a809bfb3f37632

          SHA1

          a9b28f347faf641dbd7ec6014e7ffb49471be325

          SHA256

          f76c96aea2f3809cc73e1d3ee497bc1abdbe2657e870844f8714cd11432e129e

          SHA512

          192b7cdf91bc68d88943aea1a4e7a7268af41298615099c1ee52c91beb643f4b57dce087b16670607cca9c23cab27d968060c6f020d63068906619d7b3c2b505

        • memory/2288-3-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/2288-4-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/2288-6-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/2464-2-0x0000000002710000-0x0000000002719000-memory.dmp

          Filesize

          36KB

        • memory/2464-1-0x00000000025C0000-0x00000000026C0000-memory.dmp

          Filesize

          1024KB

        • memory/3244-5-0x0000000000710000-0x0000000000726000-memory.dmp

          Filesize

          88KB

        • memory/3244-19-0x0000000000770000-0x0000000000786000-memory.dmp

          Filesize

          88KB

        • memory/3396-22-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/4624-16-0x0000000002820000-0x0000000002920000-memory.dmp

          Filesize

          1024KB