Analysis

  • max time kernel
    151s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    21-07-2021 19:08

General

  • Target

    773d01c3082deed6da2d5ebaf1058a5c.exe

  • Size

    272KB

  • MD5

    773d01c3082deed6da2d5ebaf1058a5c

  • SHA1

    95770848c54265e58e406b122b9d5a76b12c742f

  • SHA256

    c8793b903031728f6e63e0e348b844879ed7cdd073ac17031f9ebba826292033

  • SHA512

    c3959dde23d3823df119ff1b49b064b463e82156a45a705a6c23c3efadec04b526ed07e6697e6f158679301fe5cde2286edea7e7ca72aa895098c46e710c0973

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

https://helpersgroup.co.ug/index.php

http://helpersgroup.co.ug/index.php

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\773d01c3082deed6da2d5ebaf1058a5c.exe
    "C:\Users\Admin\AppData\Local\Temp\773d01c3082deed6da2d5ebaf1058a5c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:808
    • C:\Users\Admin\AppData\Local\Temp\773d01c3082deed6da2d5ebaf1058a5c.exe
      "C:\Users\Admin\AppData\Local\Temp\773d01c3082deed6da2d5ebaf1058a5c.exe"
      2⤵
      • Loads dropped DLL
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1964

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\7AC0.tmp

    MD5

    50741b3f2d7debf5d2bed63d88404029

    SHA1

    56210388a627b926162b36967045be06ffb1aad3

    SHA256

    f2f8732ae464738372ff274b7e481366cecdd2337210d4a3cbcd089c958a730c

    SHA512

    fac6bfe35b1ee08b3d42d330516a260d9cdb4a90bbb0491411a583029b92a59d20af3552372ea8fb3f59442b3945bf524ef284127f397ae7179467080be8e9b3

  • memory/1964-115-0x0000000000402ECB-mapping.dmp

  • memory/1964-114-0x0000000000400000-0x0000000000408000-memory.dmp

    Filesize

    32KB

  • memory/3052-117-0x00000000003C0000-0x00000000003D5000-memory.dmp

    Filesize

    84KB