Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    29-10-2024 04:11

General

  • Target

    6258C0D7C31A5BA4B2B0CB9C97606ACD.exe

  • Size

    2.8MB

  • MD5

    6258c0d7c31a5ba4b2b0cb9c97606acd

  • SHA1

    123138131fc33eeeedc82e795f201981232a55b1

  • SHA256

    8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4

  • SHA512

    9e8248a258475bf8676b041073da7985a3b0a6e57cf7293415e3dd1e6e8fd6bd0056ba4d60b33f6d4c0cfec4b3f33c43e88881c6a0f6fc52f3654ff12022875e

  • SSDEEP

    49152:rPloaBLYs0dLLXmgmQPDWSJNCQdi2GjyIlAd28nZbmsl+S2sJaOP:rPl7ZoLbFmsPNHi2GjLAdVlqO

Malware Config

Signatures

  • DcRat

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

  • Dcrat family
  • Process spawned unexpected child process 18 IoCs

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

  • UAC bypass 3 TTPs 6 IoCs
  • DCRat payload 3 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Executes dropped EXE 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Drops file in Program Files directory 6 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 18 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • System policy modification 1 TTPs 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
    "C:\Users\Admin\AppData\Local\Temp\6258C0D7C31A5BA4B2B0CB9C97606ACD.exe"
    1⤵
    • UAC bypass
    • Checks whether UAC is enabled
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:2868
    • C:\Windows\TAPI\audiodg.exe
      "C:\Windows\TAPI\audiodg.exe"
      2⤵
      • UAC bypass
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • System policy modification
      PID:328
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 5 /tr "'C:\Program Files\Java\jdk1.7.0_80\bin\wininit.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2916
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files\Java\jdk1.7.0_80\bin\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2584
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 11 /tr "'C:\Program Files\Java\jdk1.7.0_80\bin\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2232
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 11 /tr "'C:\Recovery\1b8b1de2-69f6-11ef-9774-62cb582c238c\audiodg.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2708
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "audiodg" /sc ONLOGON /tr "'C:\Recovery\1b8b1de2-69f6-11ef-9774-62cb582c238c\audiodg.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2752
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 7 /tr "'C:\Recovery\1b8b1de2-69f6-11ef-9774-62cb582c238c\audiodg.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2616
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 10 /tr "'C:\Program Files\Internet Explorer\de-DE\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2608
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\Internet Explorer\de-DE\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2760
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\Program Files\Internet Explorer\de-DE\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2668
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\Desktop\dwm.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2656
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Users\All Users\Desktop\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2540
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 7 /tr "'C:\Users\All Users\Desktop\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2504
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 9 /tr "'C:\Users\Public\Downloads\dwm.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2612
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Users\Public\Downloads\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2908
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 8 /tr "'C:\Users\Public\Downloads\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2180
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 8 /tr "'C:\Windows\TAPI\audiodg.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1684
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "audiodg" /sc ONLOGON /tr "'C:\Windows\TAPI\audiodg.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1872
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 6 /tr "'C:\Windows\TAPI\audiodg.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2308

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Public\Downloads\dwm.exe

    Filesize

    2.8MB

    MD5

    6258c0d7c31a5ba4b2b0cb9c97606acd

    SHA1

    123138131fc33eeeedc82e795f201981232a55b1

    SHA256

    8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4

    SHA512

    9e8248a258475bf8676b041073da7985a3b0a6e57cf7293415e3dd1e6e8fd6bd0056ba4d60b33f6d4c0cfec4b3f33c43e88881c6a0f6fc52f3654ff12022875e

  • memory/328-47-0x0000000000950000-0x0000000000962000-memory.dmp

    Filesize

    72KB

  • memory/328-45-0x0000000000080000-0x0000000000352000-memory.dmp

    Filesize

    2.8MB

  • memory/2868-12-0x00000000007A0000-0x00000000007A8000-memory.dmp

    Filesize

    32KB

  • memory/2868-14-0x0000000000870000-0x0000000000878000-memory.dmp

    Filesize

    32KB

  • memory/2868-5-0x0000000000270000-0x0000000000278000-memory.dmp

    Filesize

    32KB

  • memory/2868-6-0x0000000000280000-0x0000000000290000-memory.dmp

    Filesize

    64KB

  • memory/2868-7-0x0000000000290000-0x00000000002A6000-memory.dmp

    Filesize

    88KB

  • memory/2868-9-0x00000000007B0000-0x00000000007C2000-memory.dmp

    Filesize

    72KB

  • memory/2868-8-0x0000000000690000-0x0000000000698000-memory.dmp

    Filesize

    32KB

  • memory/2868-10-0x00000000006A0000-0x00000000006AA000-memory.dmp

    Filesize

    40KB

  • memory/2868-11-0x0000000000A20000-0x0000000000A76000-memory.dmp

    Filesize

    344KB

  • memory/2868-0-0x000007FEF57C3000-0x000007FEF57C4000-memory.dmp

    Filesize

    4KB

  • memory/2868-13-0x00000000007C0000-0x00000000007D2000-memory.dmp

    Filesize

    72KB

  • memory/2868-4-0x0000000000250000-0x000000000026C000-memory.dmp

    Filesize

    112KB

  • memory/2868-15-0x0000000000880000-0x000000000088C000-memory.dmp

    Filesize

    48KB

  • memory/2868-16-0x0000000000A70000-0x0000000000A7C000-memory.dmp

    Filesize

    48KB

  • memory/2868-17-0x0000000000A80000-0x0000000000A8E000-memory.dmp

    Filesize

    56KB

  • memory/2868-18-0x0000000000A90000-0x0000000000A9C000-memory.dmp

    Filesize

    48KB

  • memory/2868-19-0x0000000000AA0000-0x0000000000AAA000-memory.dmp

    Filesize

    40KB

  • memory/2868-20-0x0000000000AB0000-0x0000000000ABC000-memory.dmp

    Filesize

    48KB

  • memory/2868-3-0x0000000000140000-0x000000000014E000-memory.dmp

    Filesize

    56KB

  • memory/2868-46-0x000007FEF57C0000-0x000007FEF61AC000-memory.dmp

    Filesize

    9.9MB

  • memory/2868-2-0x000007FEF57C0000-0x000007FEF61AC000-memory.dmp

    Filesize

    9.9MB

  • memory/2868-1-0x00000000002B0000-0x0000000000582000-memory.dmp

    Filesize

    2.8MB