Overview

overview

10

Static

static

10

7dd8afbb49...a2.exe

windows7-x64

10

7dd8afbb49...a2.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    134s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-11-2024 10:26

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General

  • Target

    7dd8afbb49ae5a087a23e98931557da2.exe

  • Size

    827KB

  • MD5

    7dd8afbb49ae5a087a23e98931557da2

  • SHA1

    925549dc8d4b1f21905d6430796b88c795648ed2

  • SHA256

    b1d43056050ebf9e4698475c07022fb3c6e39d721abaf32d459d5bf50ed1b515

  • SHA512

    4e64d47e0c0b452546054a00491c60137ec9f4373554bda5a8e4099e803a9829e98bf130d2bec9cae9bc21eff41fc24487f50993e3316f2230c82eb08c5f9edb

  • SSDEEP

    12288:H9nfsdPp5UPYBf4HFrsulbCAx2Qg8UcYps8CNfhfG7Ik2Q:H9fjPYBCFrPlb59Us8CDfQIk2Q

Score
10/10
dcratinfostealerpersistencerat

Malware Config

Signatures

  • DcRat

    DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    ratinfostealerdcrat
  • Dcrat family
    dcrat
  • Modifies WinLogon for persistence 2 TTPs 5 IoCs
    persistence
  • Process spawned unexpected child process 15 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • DCRat payload 2 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

    rat
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 10 IoCs
    persistence
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Drops file in Program Files directory 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 15 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\7dd8afbb49ae5a087a23e98931557da2.exe
    "C:\Users\Admin\AppData\Local\Temp\7dd8afbb49ae5a087a23e98931557da2.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3724
    • C:\Users\Default\Local Settings\lsass.exe
      "C:\Users\Default\Local Settings\lsass.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:3204
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "MusNotificationM" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Internet Explorer\en-US\MusNotification.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1856
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "MusNotification" /sc ONLOGON /tr "'C:\Program Files (x86)\Internet Explorer\en-US\MusNotification.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4216
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "MusNotificationM" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Internet Explorer\en-US\MusNotification.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3148
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 10 /tr "'C:\Users\Default User\System.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3320
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Users\Default User\System.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2904
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 11 /tr "'C:\Users\Default User\System.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4884
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Internet Explorer\backgroundTaskHost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5048
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Program Files (x86)\Internet Explorer\backgroundTaskHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5036
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Internet Explorer\backgroundTaskHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2056
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorere" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows Sidebar\Shared Gadgets\explorer.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1196
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Sidebar\Shared Gadgets\explorer.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3788
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorere" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows Sidebar\Shared Gadgets\explorer.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3536
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 9 /tr "'C:\Users\Default\Local Settings\lsass.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4344
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Users\Default\Local Settings\lsass.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4140
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 11 /tr "'C:\Users\Default\Local Settings\lsass.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3716

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Default\AppData\Local\lsass.exe
    Filesize

    827KB

    MD5

    7dd8afbb49ae5a087a23e98931557da2

    SHA1

    925549dc8d4b1f21905d6430796b88c795648ed2

    SHA256

    b1d43056050ebf9e4698475c07022fb3c6e39d721abaf32d459d5bf50ed1b515

    SHA512

    4e64d47e0c0b452546054a00491c60137ec9f4373554bda5a8e4099e803a9829e98bf130d2bec9cae9bc21eff41fc24487f50993e3316f2230c82eb08c5f9edb

    Download Submit

  • memory/3724-0-0x00007FFD51F00000-0x00007FFD521C9000-memory.dmp

    Filesize

    2.8MB

    Download

  • memory/3724-1-0x0000000000A90000-0x0000000000B66000-memory.dmp

    Filesize

    856KB

    Download

  • memory/3724-2-0x00007FFD51F00000-0x00007FFD521C9000-memory.dmp

    Filesize

    2.8MB

    Download

  • memory/3724-25-0x00007FFD51F00000-0x00007FFD521C9000-memory.dmp

    Filesize

    2.8MB

    Download