Analysis

  • max time kernel
    138s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    03-07-2022 04:04

General

  • Target

    3d2777b748e805c0463c0c6d0fef8280ad197bea1dd0a25e30ed71199989a6b9.exe

  • Size

    223KB

  • MD5

    e5d1503657a6e51546cd31086675857f

  • SHA1

    8f4be30eef17a5b885f1db206baf9aef1722a30d

  • SHA256

    3d2777b748e805c0463c0c6d0fef8280ad197bea1dd0a25e30ed71199989a6b9

  • SHA512

    ddd2b77018266257fd71c489826ddb137c5c88331316a31602159cfe29e2d80ee8d9d091059568407d42addcf51273571d893646d374ae1e58572d8ed585c2cf

Malware Config

Extracted

Family

smokeloader

Version

2018

C2

http://segodnya.bit/biologe/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Checks SCSI registry key(s) 3 TTPs 2 IoCs

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

  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3d2777b748e805c0463c0c6d0fef8280ad197bea1dd0a25e30ed71199989a6b9.exe
    "C:\Users\Admin\AppData\Local\Temp\3d2777b748e805c0463c0c6d0fef8280ad197bea1dd0a25e30ed71199989a6b9.exe"
    1⤵
    • Maps connected drives based on registry
    • Checks SCSI registry key(s)
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2964
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:3428

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Discovery

    Query Registry

    2
    T1012

    Peripheral Device Discovery

    2
    T1120

    System Information Discovery

    2
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2964-131-0x0000000000570000-0x0000000000579000-memory.dmp
      Filesize

      36KB

    • memory/2964-132-0x0000000000400000-0x000000000043E000-memory.dmp
      Filesize

      248KB

    • memory/2964-134-0x0000000000570000-0x0000000000579000-memory.dmp
      Filesize

      36KB

    • memory/3152-133-0x00000000008C0000-0x00000000008D5000-memory.dmp
      Filesize

      84KB

    • memory/3428-130-0x0000000000000000-mapping.dmp