Overview

overview

10

Static

static

10

a2b1a70b88...62.exe

windows7-x64

10

a2b1a70b88...62.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    56s
  • max time network
    51s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-01-2025 20:09

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General

  • Target

    a2b1a70b88ad260dadf9f99d38f850e7256e3f9ba6f1d96ac017c70d81f7c262.exe

  • Size

    2.3MB

  • MD5

    76842313355a159ae3f15beb42b7523c

  • SHA1

    f07888bc191e4d7f42908b66a1ae9600a5d82d4e

  • SHA256

    a2b1a70b88ad260dadf9f99d38f850e7256e3f9ba6f1d96ac017c70d81f7c262

  • SHA512

    9f66f217faacf5ed8684b778b305cdfd3c66f99e11fc0adb330221db2f75c5d2798a701b8a55aa7da94fead1fd94052242e094313c641d5b21c3e314667ce330

  • SSDEEP

    24576:tg1trubkn3XjeUtXpi6lCIGlq765OkIXexdd2LCPm016qCir11X/6S/wn9UySfzV:idXjptfoI3eJIzQ6qTr7X3MFSu+L39l

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 1 IoCs
    persistence
  • Process spawned unexpected child process 3 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 2 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 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\a2b1a70b88ad260dadf9f99d38f850e7256e3f9ba6f1d96ac017c70d81f7c262.exe
    "C:\Users\Admin\AppData\Local\Temp\a2b1a70b88ad260dadf9f99d38f850e7256e3f9ba6f1d96ac017c70d81f7c262.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1488
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\XKzvULvzMy.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1904
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:3564
        • C:\Users\Admin\AppData\Local\Microsoft\sppsvc.exe
          "C:/Users/Admin/AppData/Local/Microsoft\sppsvc.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2416
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 5 /tr "'C:/Users/Admin/AppData/Local/Microsoft\sppsvc.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:816
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:/Users/Admin/AppData/Local/Microsoft\sppsvc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1156
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 13 /tr "'C:/Users/Admin/AppData/Local/Microsoft\sppsvc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4060

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\sppsvc.exe
      Filesize

      2.3MB

      MD5

      76842313355a159ae3f15beb42b7523c

      SHA1

      f07888bc191e4d7f42908b66a1ae9600a5d82d4e

      SHA256

      a2b1a70b88ad260dadf9f99d38f850e7256e3f9ba6f1d96ac017c70d81f7c262

      SHA512

      9f66f217faacf5ed8684b778b305cdfd3c66f99e11fc0adb330221db2f75c5d2798a701b8a55aa7da94fead1fd94052242e094313c641d5b21c3e314667ce330

      Download Submit

    • C:\Users\Admin\AppData\Local\Temp\XKzvULvzMy.bat
      Filesize

      214B

      MD5

      4c27abca7a5a3989a777276e933e4fd6

      SHA1

      d360da0a47624c76f98fce2855da1d8ee74bcc04

      SHA256

      046776d8a81b71bb9d0f3ce6b52e89e366e8c50532623352dd209ba96adcc94c

      SHA512

      dc02c1222f17d87eab3fa6b56b648bf65d0a3fd9262803bae123dffec5729f665e85f46d5002d5d6618e5a1ad9c86b492f893feada0dc23e83117d26c766326a

      Download Submit

    • memory/1488-4-0x000000001BF20000-0x000000001BF70000-memory.dmp

      Filesize

      320KB

      Download

    • memory/1488-10-0x000000001BF90000-0x000000001BF98000-memory.dmp

      Filesize

      32KB

      Download

    • memory/1488-0-0x00007FFAC20B3000-0x00007FFAC20B5000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1488-6-0x000000001B9C0000-0x000000001BA16000-memory.dmp

      Filesize

      344KB

      Download

    • memory/1488-5-0x000000001B950000-0x000000001B966000-memory.dmp

      Filesize

      88KB

      Download

    • memory/1488-7-0x0000000002E20000-0x0000000002E32000-memory.dmp

      Filesize

      72KB

      Download

    • memory/1488-8-0x000000001C830000-0x000000001CD58000-memory.dmp

      Filesize

      5.2MB

      Download

    • memory/1488-3-0x0000000002E40000-0x0000000002E5C000-memory.dmp

      Filesize

      112KB

      Download

    • memory/1488-9-0x0000000002E60000-0x0000000002E6E000-memory.dmp

      Filesize

      56KB

      Download

    • memory/1488-18-0x00007FFAC20B0000-0x00007FFAC2B71000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/1488-2-0x00007FFAC20B0000-0x00007FFAC2B71000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/1488-1-0x0000000000B10000-0x0000000000D60000-memory.dmp

      Filesize

      2.3MB

      Download

    • memory/2416-23-0x000000001AF10000-0x000000001AF66000-memory.dmp

      Filesize

      344KB

      Download

    • memory/2416-24-0x0000000002540000-0x0000000002552000-memory.dmp

      Filesize

      72KB

      Download