Overview

overview

10

Static

static

3

cerber.exe

windows11-21h2-x64

10

cryptowall.exe

windows11-21h2-x64

3

jigsaw.exe

windows11-21h2-x64

10

Locky.exe

windows11-21h2-x64

10

131.exe

windows11-21h2-x64

3

Matsnu-MBR...3 .exe

windows11-21h2-x64

3

027cc450ef...d9.dll

windows11-21h2-x64

10

027cc450ef...ju.dll

windows11-21h2-x64

10

myguy.hta

windows11-21h2-x64

3

svchost.exe

windows11-21h2-x64

7

Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241007-es
  • resource tags

    arch:x64arch:x86image:win11-20241007-eslocale:es-esos:windows11-21h2-x64systemwindows
  • submitted
    10-11-2024 19:45

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General

  • Target

    027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745_98STJd8lju.dll

  • Size

    353KB

  • MD5

    71b6a493388e7d0b40c83ce903bc6b04

  • SHA1

    34f917aaba5684fbe56d3c57d48ef2a1aa7cf06d

  • SHA256

    027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745

  • SHA512

    072205eca5099d9269f358fe534b370ff21a4f12d7938d6d2e2713f69310f0698e53b8aff062849f0b2a521f68bee097c1840993825d2a5a3aa8cf4145911c6f

  • SSDEEP

    6144:y/Bt80VmNTBo/x95ZjAetGDN3VFNq7pC+9OqFoK30b3ni5rdQY/CdUOs2:y/X4NTS/x9jNG+w+9OqFoK323qdQYKUG

Score
10/10
mimikatzbootkitdiscoverypersistencespywarestealer

Malware Config

Signatures

  • Mimikatz

    mimikatz is an open source tool to dump credentials on Windows.

    mimikatz
  • Mimikatz family
    mimikatz
  • mimikatz is an open source tool to dump credentials on Windows 1 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

    spywarestealer
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

    bootkitpersistence
  • Drops file in Program Files directory 56 IoCs
  • Drops file in Windows directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745_98STJd8lju.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4124
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745_98STJd8lju.dll,#1
      2⤵
      • Deletes itself
      • Writes to the Master Boot Record (MBR)
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2940
      • C:\Windows\SysWOW64\cmd.exe
        /c schtasks /Create /SC once /TN "" /TR "C:\Windows\system32\shutdown.exe /r /f" /ST 20:48
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:656
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /Create /SC once /TN "" /TR "C:\Windows\system32\shutdown.exe /r /f" /ST 20:48
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:2416
      • C:\Users\Admin\AppData\Local\Temp\8AFA.tmp
        "C:\Users\Admin\AppData\Local\Temp\8AFA.tmp" \\.\pipe\{3801901A-62EC-4C6D-9926-E7B0EC8022AB}
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2904

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\8AFA.tmp
    Filesize

    55KB

    MD5

    7e37ab34ecdcc3e77e24522ddfd4852d

    SHA1

    38e2855e11e353cedf9a8a4f2f2747f1c5c07fcf

    SHA256

    02ef73bd2458627ed7b397ec26ee2de2e92c71a0e7588f78734761d8edbdcd9f

    SHA512

    1b037a2aa8bf951d2ffe2f724aa0b2fbb39c2173215806ba0327bda7b096301d887f9bb7db46f9e04584b16aa6b1aaeaf67f0ecf5f20eb02ceac27c8753ca587

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  • memory/2940-0-0x0000000002490000-0x00000000024EE000-memory.dmp

    Filesize

    376KB

    Download

  • memory/2940-8-0x0000000002490000-0x00000000024EE000-memory.dmp

    Filesize

    376KB

    Download

  • memory/2940-9-0x0000000002490000-0x00000000024EE000-memory.dmp

    Filesize

    376KB

    Download

  • memory/2940-11-0x0000000002490000-0x00000000024EE000-memory.dmp

    Filesize

    376KB

    Download

  • memory/2940-22-0x0000000002490000-0x00000000024EE000-memory.dmp

    Filesize

    376KB

    Download