Analysis

  • max time kernel
    150s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/09/2023, 19:18

General

  • Target

    b706b0b48e67dced179a4775d67c6a0532c91d9d69274f214da622945a221fa6.exe

  • Size

    267KB

  • MD5

    12615c3c739e7fc3107920f4e1fcb8d0

  • SHA1

    de0175d2ecbe05ab09c7eef39e004b8ebde5797a

  • SHA256

    b706b0b48e67dced179a4775d67c6a0532c91d9d69274f214da622945a221fa6

  • SHA512

    2dd36a7e290b95d75cc5a30b06b7f96d774f2f9aa226469e335752a9c238b79a85e4a388e7c022d4f9ced3c8bebf4b6bfe397941f82d79ca8a532122aa635966

  • SSDEEP

    3072:3n2ZCEpgvvqmADmz82rcAwIs+hPRGjk1J0Dntw1ZtHOINGSZoV:X2Z+vSmADmz82/tPRn1y+HcSZK

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.

  • 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\b706b0b48e67dced179a4775d67c6a0532c91d9d69274f214da622945a221fa6.exe
    "C:\Users\Admin\AppData\Local\Temp\b706b0b48e67dced179a4775d67c6a0532c91d9d69274f214da622945a221fa6.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4952
    • C:\Users\Admin\AppData\Local\Temp\b706b0b48e67dced179a4775d67c6a0532c91d9d69274f214da622945a221fa6.exe
      "C:\Users\Admin\AppData\Local\Temp\b706b0b48e67dced179a4775d67c6a0532c91d9d69274f214da622945a221fa6.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:4520
  • C:\Users\Admin\AppData\Roaming\rhejifr
    C:\Users\Admin\AppData\Roaming\rhejifr
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:568
    • C:\Users\Admin\AppData\Roaming\rhejifr
      C:\Users\Admin\AppData\Roaming\rhejifr
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:4584

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          267KB

          MD5

          12615c3c739e7fc3107920f4e1fcb8d0

          SHA1

          de0175d2ecbe05ab09c7eef39e004b8ebde5797a

          SHA256

          b706b0b48e67dced179a4775d67c6a0532c91d9d69274f214da622945a221fa6

          SHA512

          2dd36a7e290b95d75cc5a30b06b7f96d774f2f9aa226469e335752a9c238b79a85e4a388e7c022d4f9ced3c8bebf4b6bfe397941f82d79ca8a532122aa635966

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

          Filesize

          267KB

          MD5

          12615c3c739e7fc3107920f4e1fcb8d0

          SHA1

          de0175d2ecbe05ab09c7eef39e004b8ebde5797a

          SHA256

          b706b0b48e67dced179a4775d67c6a0532c91d9d69274f214da622945a221fa6

          SHA512

          2dd36a7e290b95d75cc5a30b06b7f96d774f2f9aa226469e335752a9c238b79a85e4a388e7c022d4f9ced3c8bebf4b6bfe397941f82d79ca8a532122aa635966

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

          Filesize

          267KB

          MD5

          12615c3c739e7fc3107920f4e1fcb8d0

          SHA1

          de0175d2ecbe05ab09c7eef39e004b8ebde5797a

          SHA256

          b706b0b48e67dced179a4775d67c6a0532c91d9d69274f214da622945a221fa6

          SHA512

          2dd36a7e290b95d75cc5a30b06b7f96d774f2f9aa226469e335752a9c238b79a85e4a388e7c022d4f9ced3c8bebf4b6bfe397941f82d79ca8a532122aa635966

        • memory/568-16-0x00000000009F0000-0x0000000000AF0000-memory.dmp

          Filesize

          1024KB

        • memory/3180-5-0x0000000002C40000-0x0000000002C56000-memory.dmp

          Filesize

          88KB

        • memory/3180-20-0x0000000003060000-0x0000000003076000-memory.dmp

          Filesize

          88KB

        • memory/4520-4-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/4520-6-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/4520-3-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/4584-19-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/4584-21-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/4952-2-0x0000000002460000-0x0000000002469000-memory.dmp

          Filesize

          36KB

        • memory/4952-1-0x0000000000760000-0x0000000000860000-memory.dmp

          Filesize

          1024KB