Analysis

  • max time kernel
    119s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    15-06-2024 01:54

General

  • Target

    99fce21d1aa81f7f3b8fae707aabd43b5b51b9da0fbb7258b68bd5fe9d62073a.exe

  • Size

    6KB

  • MD5

    1c56623199e1959f271a191d603360bf

  • SHA1

    9a7429e8b08ef843739c7739e8a314006c20b2af

  • SHA256

    99fce21d1aa81f7f3b8fae707aabd43b5b51b9da0fbb7258b68bd5fe9d62073a

  • SHA512

    87c50fb8f13d5b0ce5d83d99e64a7728e466e33118faea4c52136dd8a2f70d5f4217c90f4cc3c415628b9f96b7ed114cedb2455e3edc1cc39e67a36b79fceee4

  • SSDEEP

    96:QhN/c/kk91xUL9678Ms0wFFpBV4Xh4yvn1j4r/8iT85fTc70zNt:QhN/cx1o96hwFH4R4viRM+

Malware Config

Extracted

Family

purecrypter

C2

http://103.195.103.33/nf/Qtdxulkcon.wav

Signatures

  • PureCrypter

    PureCrypter is a .NET malware loader first seen in early 2021.

  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 35 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\99fce21d1aa81f7f3b8fae707aabd43b5b51b9da0fbb7258b68bd5fe9d62073a.exe
    "C:\Users\Admin\AppData\Local\Temp\99fce21d1aa81f7f3b8fae707aabd43b5b51b9da0fbb7258b68bd5fe9d62073a.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2988
    • C:\Users\Admin\AppData\Local\Temp\99fce21d1aa81f7f3b8fae707aabd43b5b51b9da0fbb7258b68bd5fe9d62073a.exe
      "C:\Users\Admin\AppData\Local\Temp\99fce21d1aa81f7f3b8fae707aabd43b5b51b9da0fbb7258b68bd5fe9d62073a.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:3292

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\Mghmtlzsnz.tmpdb

    Filesize

    148KB

    MD5

    90a1d4b55edf36fa8b4cc6974ed7d4c4

    SHA1

    aba1b8d0e05421e7df5982899f626211c3c4b5c1

    SHA256

    7cf3e9e8619904e72ea6608cc43e9b6c9f8aa2af02476f60c2b3daf33075981c

    SHA512

    ea0838be754e1258c230111900c5937d2b0788f90bbf7c5f82b2ceda7868e50afb86c301f313267eaa912778da45755560b5434885521bf915967a7863922ae2

  • memory/2988-0-0x000000007472E000-0x000000007472F000-memory.dmp

    Filesize

    4KB

  • memory/2988-1-0x00000000003C0000-0x00000000003C8000-memory.dmp

    Filesize

    32KB

  • memory/2988-2-0x0000000074720000-0x0000000074E0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2988-3-0x000000007472E000-0x000000007472F000-memory.dmp

    Filesize

    4KB

  • memory/2988-4-0x0000000074720000-0x0000000074E0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2988-5-0x00000000082D0000-0x00000000085BC000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-11-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-9-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-15-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-7-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-19-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-21-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-23-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-25-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-27-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-31-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-33-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-29-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-35-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-37-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-39-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-45-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-49-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-47-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-43-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-53-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-55-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-41-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-61-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-63-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-17-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-6-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-67-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-14-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-69-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-51-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-57-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-59-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-65-0x00000000082D0000-0x00000000085B6000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-4892-0x0000000074720000-0x0000000074E0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2988-4894-0x00000000051D0000-0x000000000521C000-memory.dmp

    Filesize

    304KB

  • memory/2988-4893-0x0000000006000000-0x0000000006128000-memory.dmp

    Filesize

    1.2MB

  • memory/2988-4895-0x0000000074720000-0x0000000074E0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2988-4896-0x0000000004C90000-0x0000000004CE4000-memory.dmp

    Filesize

    336KB

  • memory/2988-4910-0x0000000074720000-0x0000000074E0E000-memory.dmp

    Filesize

    6.9MB

  • memory/3292-4909-0x0000000000400000-0x00000000004D8000-memory.dmp

    Filesize

    864KB

  • memory/3292-4912-0x0000000074720000-0x0000000074E0E000-memory.dmp

    Filesize

    6.9MB

  • memory/3292-4911-0x00000000042E0000-0x00000000043F6000-memory.dmp

    Filesize

    1.1MB

  • memory/3292-4913-0x0000000074720000-0x0000000074E0E000-memory.dmp

    Filesize

    6.9MB

  • memory/3292-7250-0x0000000004B30000-0x0000000004BCE000-memory.dmp

    Filesize

    632KB

  • memory/3292-7251-0x00000000006E0000-0x000000000070C000-memory.dmp

    Filesize

    176KB

  • memory/3292-7252-0x0000000006280000-0x00000000062FA000-memory.dmp

    Filesize

    488KB

  • memory/3292-7283-0x0000000074720000-0x0000000074E0E000-memory.dmp

    Filesize

    6.9MB