Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-05-2024 02:21

General

  • Target

    4a8fd7bb970c86e0650a3e110fb5e6d0.exe

  • Size

    901KB

  • MD5

    4a8fd7bb970c86e0650a3e110fb5e6d0

  • SHA1

    514e8249d87435de3b34bfd06e3dea9a6fb0fc96

  • SHA256

    86e9ac84264ae29059d78e2a3ebedea8d3b6c1083d03b82bdab8e32d306fd8a9

  • SHA512

    390a7e834dec74cbcc49efeee1adddb05bbe2e972e08a0ec5e6cfbecc92e4a864f6c33ce1a1d293acd42cc4f8f6ca89a8226820819170f8d86ff5e5d301e5910

  • SSDEEP

    12288:ZRlDmSxJVEcVQ8KNIeyYzXIpv+KX5x3JfjaOCXzP8bGUwqHGrgc:zlDVLfVQ8KMYD/KXZfjaV8bGjqHGrF

Score
10/10

Malware Config

Signatures

  • DcRat

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

  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in Program Files directory 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 15 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 25 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\4a8fd7bb970c86e0650a3e110fb5e6d0.exe
    "C:\Users\Admin\AppData\Local\Temp\4a8fd7bb970c86e0650a3e110fb5e6d0.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1972
    • C:\Program Files (x86)\Windows Sidebar\Shared Gadgets\backgroundTaskHost.exe
      "C:\Program Files (x86)\Windows Sidebar\Shared Gadgets\backgroundTaskHost.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:4792
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 10 /tr "'C:\Program Files\Windows Sidebar\Gadgets\dllhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1260
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Program Files\Windows Sidebar\Gadgets\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2540
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 11 /tr "'C:\Program Files\Windows Sidebar\Gadgets\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3560
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Windows Sidebar\Shared Gadgets\backgroundTaskHost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1556
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Sidebar\Shared Gadgets\backgroundTaskHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2884
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows Sidebar\Shared Gadgets\backgroundTaskHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2748
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 9 /tr "'C:\Users\Admin\Favorites\dllhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1780
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Users\Admin\Favorites\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1752
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 9 /tr "'C:\Users\Admin\Favorites\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1608
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\Registry.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4388
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "Registry" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\Registry.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4804
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\Registry.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1760
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 12 /tr "'C:\Program Files\Uninstall Information\sppsvc.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4624
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Program Files\Uninstall Information\sppsvc.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3084
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 10 /tr "'C:\Program Files\Uninstall Information\sppsvc.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1008

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files\Uninstall Information\sppsvc.exe

    Filesize

    901KB

    MD5

    4a8fd7bb970c86e0650a3e110fb5e6d0

    SHA1

    514e8249d87435de3b34bfd06e3dea9a6fb0fc96

    SHA256

    86e9ac84264ae29059d78e2a3ebedea8d3b6c1083d03b82bdab8e32d306fd8a9

    SHA512

    390a7e834dec74cbcc49efeee1adddb05bbe2e972e08a0ec5e6cfbecc92e4a864f6c33ce1a1d293acd42cc4f8f6ca89a8226820819170f8d86ff5e5d301e5910

  • memory/1972-0-0x00007FFBCDF43000-0x00007FFBCDF45000-memory.dmp

    Filesize

    8KB

  • memory/1972-1-0x0000000000AD0000-0x0000000000BB8000-memory.dmp

    Filesize

    928KB

  • memory/1972-2-0x0000000002DD0000-0x0000000002DDE000-memory.dmp

    Filesize

    56KB

  • memory/1972-3-0x00007FFBCDF40000-0x00007FFBCEA01000-memory.dmp

    Filesize

    10.8MB

  • memory/1972-4-0x00007FFBCDF40000-0x00007FFBCEA01000-memory.dmp

    Filesize

    10.8MB

  • memory/1972-5-0x00007FFBCDF40000-0x00007FFBCEA01000-memory.dmp

    Filesize

    10.8MB

  • memory/1972-6-0x00007FFBCDF40000-0x00007FFBCEA01000-memory.dmp

    Filesize

    10.8MB

  • memory/1972-7-0x000000001B720000-0x000000001B728000-memory.dmp

    Filesize

    32KB

  • memory/1972-29-0x00007FFBCDF40000-0x00007FFBCEA01000-memory.dmp

    Filesize

    10.8MB

  • memory/4792-30-0x000000001B5B0000-0x000000001B6B2000-memory.dmp

    Filesize

    1.0MB