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Analysis

  • max time kernel
    300s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    03/09/2023, 21:56

General

  • Target

    2d90e4d6aabf27b3e3babbb6846ed261f650f885858be57a2def6a5e361071b7.exe

  • Size

    281KB

  • MD5

    4dc922beacbbd78690a084e451fe420e

  • SHA1

    60dad60b5c7302b4e3710178adc3e3733a969feb

  • SHA256

    2d90e4d6aabf27b3e3babbb6846ed261f650f885858be57a2def6a5e361071b7

  • SHA512

    9f794fecd0557ca9aad0eedf6c463620657c64033478fa518e195ddfa0d0ae17c91bf3857e362309ecf8ffba54a74b1107d59b16c75cca686a65987000363a81

  • SSDEEP

    3072:/aD8DiZ7URsbW4FC0iK/qEB21CgE8bNUT51RMPU5Lt0Fyeymx:yP7w3Xk0CgEcNU5fMc54yey

Malware Config

Extracted

Family

smokeloader

Botnet

pub5

Extracted

Family

smokeloader

Version

2022

C2

http://taibi.at/tmp/

http://01stroy.ru/tmp/

http://mal-net.com/tmp/

http://gromograd.ru/tmp/

http://kingpirate.ru/tmp/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 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 1 IoCs
  • Suspicious use of WriteProcessMemory 4 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\2d90e4d6aabf27b3e3babbb6846ed261f650f885858be57a2def6a5e361071b7.exe
    "C:\Users\Admin\AppData\Local\Temp\2d90e4d6aabf27b3e3babbb6846ed261f650f885858be57a2def6a5e361071b7.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:2988
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {5A132C27-9376-4B8C-8B17-AE803787AC9C} S-1-5-21-3513876443-2771975297-1923446376-1000:GPFFWLPI\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2740
    • C:\Users\Admin\AppData\Roaming\crtwejb
      C:\Users\Admin\AppData\Roaming\crtwejb
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:2568

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    281KB

    MD5

    4dc922beacbbd78690a084e451fe420e

    SHA1

    60dad60b5c7302b4e3710178adc3e3733a969feb

    SHA256

    2d90e4d6aabf27b3e3babbb6846ed261f650f885858be57a2def6a5e361071b7

    SHA512

    9f794fecd0557ca9aad0eedf6c463620657c64033478fa518e195ddfa0d0ae17c91bf3857e362309ecf8ffba54a74b1107d59b16c75cca686a65987000363a81

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

    Filesize

    281KB

    MD5

    4dc922beacbbd78690a084e451fe420e

    SHA1

    60dad60b5c7302b4e3710178adc3e3733a969feb

    SHA256

    2d90e4d6aabf27b3e3babbb6846ed261f650f885858be57a2def6a5e361071b7

    SHA512

    9f794fecd0557ca9aad0eedf6c463620657c64033478fa518e195ddfa0d0ae17c91bf3857e362309ecf8ffba54a74b1107d59b16c75cca686a65987000363a81

  • memory/1264-18-0x0000000002B10000-0x0000000002B26000-memory.dmp

    Filesize

    88KB

  • memory/1264-4-0x00000000029D0000-0x00000000029E6000-memory.dmp

    Filesize

    88KB

  • memory/2568-15-0x00000000003C0000-0x00000000003D5000-memory.dmp

    Filesize

    84KB

  • memory/2568-16-0x0000000000400000-0x0000000002435000-memory.dmp

    Filesize

    32.2MB

  • memory/2568-21-0x0000000000400000-0x0000000002435000-memory.dmp

    Filesize

    32.2MB

  • memory/2988-8-0x00000000003E0000-0x00000000003E9000-memory.dmp

    Filesize

    36KB

  • memory/2988-9-0x00000000003B0000-0x00000000003C5000-memory.dmp

    Filesize

    84KB

  • memory/2988-5-0x0000000000400000-0x0000000002435000-memory.dmp

    Filesize

    32.2MB

  • memory/2988-2-0x0000000000400000-0x0000000002435000-memory.dmp

    Filesize

    32.2MB

  • memory/2988-0-0x00000000003B0000-0x00000000003C5000-memory.dmp

    Filesize

    84KB

  • memory/2988-1-0x00000000003E0000-0x00000000003E9000-memory.dmp

    Filesize

    36KB