Analysis

  • max time kernel
    158s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    19-09-2022 14:55

General

  • Target

    73ec0de7c9867bbf261b7ce319bb8c18fd1acaf52f4b2867f7444559ecf87d18.exe

  • Size

    52KB

  • MD5

    6473b074b73b9ca176311bf100e02d9a

  • SHA1

    19c03060ab2bedf181df7f406a31e90db8e8ac1d

  • SHA256

    73ec0de7c9867bbf261b7ce319bb8c18fd1acaf52f4b2867f7444559ecf87d18

  • SHA512

    dcb5a7d278169292ba0291386b72e9bccc6064d9b12f99cbf90a9d3513f7036b7863cd0e3fae8c9195cbf29ae472d3b1d4bd53608268656d31ea7dc31ee12d7c

  • SSDEEP

    768:OWEJbB6haGnJntgTVH7NHaurxmWXOQfwoObuPb77e5yC:OWE96Jnml5lXAoO+H7cyC

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\73ec0de7c9867bbf261b7ce319bb8c18fd1acaf52f4b2867f7444559ecf87d18.exe
    "C:\Users\Admin\AppData\Local\Temp\73ec0de7c9867bbf261b7ce319bb8c18fd1acaf52f4b2867f7444559ecf87d18.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:864
    • C:\Users\Admin\xoausuf.exe
      "C:\Users\Admin\xoausuf.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:520

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\xoausuf.exe

    Filesize

    52KB

    MD5

    3183807228637a57178460b6e30d2a54

    SHA1

    bc5db49af1a524631cc62cc9730ba89fea3a7f1c

    SHA256

    afa75fd30cc5f704c50c5b707d1436427ee6034b3f312129134f3de8e14d109f

    SHA512

    824e7b5e33796b2880655e351d8e0cc98263d3e31d9d0d5cc4b164137487bb4840ac43ec2f60a6b3abda7f982f32ab278858bdda5189bab6f9732886fc72d585

  • C:\Users\Admin\xoausuf.exe

    Filesize

    52KB

    MD5

    3183807228637a57178460b6e30d2a54

    SHA1

    bc5db49af1a524631cc62cc9730ba89fea3a7f1c

    SHA256

    afa75fd30cc5f704c50c5b707d1436427ee6034b3f312129134f3de8e14d109f

    SHA512

    824e7b5e33796b2880655e351d8e0cc98263d3e31d9d0d5cc4b164137487bb4840ac43ec2f60a6b3abda7f982f32ab278858bdda5189bab6f9732886fc72d585

  • \Users\Admin\xoausuf.exe

    Filesize

    52KB

    MD5

    3183807228637a57178460b6e30d2a54

    SHA1

    bc5db49af1a524631cc62cc9730ba89fea3a7f1c

    SHA256

    afa75fd30cc5f704c50c5b707d1436427ee6034b3f312129134f3de8e14d109f

    SHA512

    824e7b5e33796b2880655e351d8e0cc98263d3e31d9d0d5cc4b164137487bb4840ac43ec2f60a6b3abda7f982f32ab278858bdda5189bab6f9732886fc72d585

  • \Users\Admin\xoausuf.exe

    Filesize

    52KB

    MD5

    3183807228637a57178460b6e30d2a54

    SHA1

    bc5db49af1a524631cc62cc9730ba89fea3a7f1c

    SHA256

    afa75fd30cc5f704c50c5b707d1436427ee6034b3f312129134f3de8e14d109f

    SHA512

    824e7b5e33796b2880655e351d8e0cc98263d3e31d9d0d5cc4b164137487bb4840ac43ec2f60a6b3abda7f982f32ab278858bdda5189bab6f9732886fc72d585

  • memory/864-56-0x0000000076261000-0x0000000076263000-memory.dmp

    Filesize

    8KB