Analysis

  • max time kernel
    152s
  • max time network
    135s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    06/09/2021, 12:35

General

  • Target
    278d7ebe9857c7f5599ccd09153f04b3.exe
  • Size 202KB
  • Sample210906-psc68abag4
  • SHA256 76bbdd6144d670f4b0e425238d2ec42800711bfaf882dad3ec7f47ac37f2ddd9
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://fioajfoiarjfoi1.xyz/

  • http://rdukhnihioh2.xyz/

  • http://sdfghjklemm3.xyz/

  • http://eruiopijhgnn4.xyz/

  • http://igbyugfwbwb5.xyz/

  • http://shfuhfuwhhc6.xyz/

  • http://ersyglhjkuij7.xyz/

  • http://ygyguguuju8.store/

  • http://resbkjpokfct9.store/

  • http://sdfygfygu10.store/

  • http://hbibhibihnj11.store/

  • http://vfwlkjhbghg12.store/

  • http://poiuytrcvb13.store/

  • http://xsedfgtbh14.store/

  • http://iknhyghggh15.store/

  • http://wnlonevkiju16.site/

  • http://gfyufuhhihioh17.site/

  • http://nsgiuwrevi18.site/

  • http://oiureveiuv19.site/

  • http://ovrnevnriuen20.site/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Executes dropped EXE 2 IoCs
  • Deletes itself 1 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 UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\278d7ebe9857c7f5599ccd09153f04b3.exe
    "C:\Users\Admin\AppData\Local\Temp\278d7ebe9857c7f5599ccd09153f04b3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3128
    • C:\Users\Admin\AppData\Local\Temp\278d7ebe9857c7f5599ccd09153f04b3.exe
      "C:\Users\Admin\AppData\Local\Temp\278d7ebe9857c7f5599ccd09153f04b3.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1632
  • C:\Users\Admin\AppData\Roaming\jjdwhec
    C:\Users\Admin\AppData\Roaming\jjdwhec
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3008
    • C:\Users\Admin\AppData\Roaming\jjdwhec
      C:\Users\Admin\AppData\Roaming\jjdwhec
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:2032

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1632-115-0x0000000000400000-0x0000000000409000-memory.dmp

        memory/3016-117-0x0000000000FE0000-0x0000000000FF6000-memory.dmp

        memory/3016-123-0x00000000012E0000-0x00000000012F6000-memory.dmp

        memory/3128-114-0x0000000000030000-0x000000000003A000-memory.dmp