Analysis

  • max time kernel
    148s
  • 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
    06-12-2024 08:59

General

  • Target

    789ff6a462201360bea02c98b4fb3c2d.exe

  • Size

    984KB

  • MD5

    789ff6a462201360bea02c98b4fb3c2d

  • SHA1

    322228573e2be64daf1ee9118af397dfcbc91bce

  • SHA256

    0fc310783328a7b162001c9557bbed66e30d45de3ac0362e15f6f28d83ccc7a8

  • SHA512

    72517203f735a71d241fb69d55a85315f678dec2f7c02d8b3733e318fe804424cf7079873a296a6e411e2b1364800cc89df45987a8609813f1a64a60b044616e

  • SSDEEP

    12288:gyEIOYTNEIf5AycvEhKIV6tEcln0Ai2a61h3cQ9Fk+ntGoWuzsx1oiLgo:gyErYT+PvXIUln/1GJgo

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 6 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.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 11 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Drops file in Program Files directory 5 IoCs
  • 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 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 13 IoCs
  • Suspicious use of WriteProcessMemory 24 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\789ff6a462201360bea02c98b4fb3c2d.exe
    "C:\Users\Admin\AppData\Local\Temp\789ff6a462201360bea02c98b4fb3c2d.exe"
    1⤵
    • UAC bypass
    • Checks computer location settings
    • Checks whether UAC is enabled
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:3208
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2032
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/$Recycle.Bin/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2984
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Documents and Settings/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2352
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/PerfLogs/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4064
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Program Files/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2728
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Program Files (x86)/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4848
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/ProgramData/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3956
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Recovery/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1644
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/System Volume Information/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4772
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Users/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3704
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Windows/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4176
    • C:\Users\All Users\SearchApp.exe
      "C:\Users\All Users\SearchApp.exe"
      2⤵
      • UAC bypass
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • System policy modification
      PID:4152
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 13 /tr "'C:\Users\All Users\SearchApp.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3468
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Users\All Users\SearchApp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5016
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\SearchApp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4020
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 8 /tr "'C:\Program Files\Mozilla Firefox\defaults\pref\System.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4456
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Program Files\Mozilla Firefox\defaults\pref\System.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3648
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 14 /tr "'C:\Program Files\Mozilla Firefox\defaults\pref\System.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4968

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files\Mozilla Firefox\defaults\pref\System.exe

    Filesize

    984KB

    MD5

    1a2318a4e6cfbe224cfe557f837b7c43

    SHA1

    9dca4416c1885887f0d4eda9cccc557ac97b29a8

    SHA256

    4f335a73322edc0eca4ca68fb6d1a0247d1008e13132c56683ec662a0dcd2054

    SHA512

    307ebc2fd6b748afaa7bd02e7b3b66ec7908c3ad035e5aca92fdf5471669927b9d18c6a3f6181bf0797594edce91e7d78384c4bb7ccb90abc79971194cebfc34

  • C:\ProgramData\SearchApp.exe

    Filesize

    984KB

    MD5

    789ff6a462201360bea02c98b4fb3c2d

    SHA1

    322228573e2be64daf1ee9118af397dfcbc91bce

    SHA256

    0fc310783328a7b162001c9557bbed66e30d45de3ac0362e15f6f28d83ccc7a8

    SHA512

    72517203f735a71d241fb69d55a85315f678dec2f7c02d8b3733e318fe804424cf7079873a296a6e411e2b1364800cc89df45987a8609813f1a64a60b044616e

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    d85ba6ff808d9e5444a4b369f5bc2730

    SHA1

    31aa9d96590fff6981b315e0b391b575e4c0804a

    SHA256

    84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

    SHA512

    8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    6d42b6da621e8df5674e26b799c8e2aa

    SHA1

    ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

    SHA256

    5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

    SHA512

    53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    a8e8360d573a4ff072dcc6f09d992c88

    SHA1

    3446774433ceaf0b400073914facab11b98b6807

    SHA256

    bf5e284e8f95122bf75ead61c7e2b40f55c96742b05330b5b1cb7915991df13b

    SHA512

    4ee5167643d82082f57c42616007ef9be57f43f9731921bdf7bca611a914724ad94072d3c8f5b130fa54129e5328ccdebf37ba74339c37deb53e79df5cdf0dbe

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    cadef9abd087803c630df65264a6c81c

    SHA1

    babbf3636c347c8727c35f3eef2ee643dbcc4bd2

    SHA256

    cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438

    SHA512

    7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    e243a38635ff9a06c87c2a61a2200656

    SHA1

    ecd95ed5bf1a9fbe96a8448fc2814a0210fa2afc

    SHA256

    af5782703f3f2d5a29fb313dae6680a64134db26064d4a321a3f23b75f6ca00f

    SHA512

    4418957a1b10eee44cf270c81816ae707352411c4f5ac14b6b61ab537c91480e24e0a0a2c276a6291081b4984c123cf673a45dcedb0ceeef682054ba0fc19cb4

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    104B

    MD5

    5a4d37324c554e01d4147f49196ff003

    SHA1

    ef461943371976fa3553443b215072a4727f2886

    SHA256

    ca4d50c70afd94ecfb94ddc0e175550f219eb0214f58b698ee2ef9194982c518

    SHA512

    d5a67c95411561e1f1be888fae7fc2cd6ee6caf936ff68dcd1dbfae33b6fc4a2d671c858566da5b1f531c1afc507d6db6fe1a84649eb9171d6aa7533b8b2a806

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zmxtpvdk.3zd.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/2352-113-0x0000026FD3C00000-0x0000026FD3C22000-memory.dmp

    Filesize

    136KB

  • memory/3208-11-0x0000000002D80000-0x0000000002D88000-memory.dmp

    Filesize

    32KB

  • memory/3208-8-0x0000000002D60000-0x0000000002D6C000-memory.dmp

    Filesize

    48KB

  • memory/3208-12-0x0000000002DA0000-0x0000000002DAE000-memory.dmp

    Filesize

    56KB

  • memory/3208-14-0x000000001BEA0000-0x000000001BEAC000-memory.dmp

    Filesize

    48KB

  • memory/3208-0-0x00007FF916683000-0x00007FF916685000-memory.dmp

    Filesize

    8KB

  • memory/3208-17-0x00007FF916680000-0x00007FF917141000-memory.dmp

    Filesize

    10.8MB

  • memory/3208-18-0x00007FF916680000-0x00007FF917141000-memory.dmp

    Filesize

    10.8MB

  • memory/3208-10-0x000000001C0E0000-0x000000001C0EC000-memory.dmp

    Filesize

    48KB

  • memory/3208-9-0x0000000002D70000-0x0000000002D7C000-memory.dmp

    Filesize

    48KB

  • memory/3208-13-0x000000001BE90000-0x000000001BE9C000-memory.dmp

    Filesize

    48KB

  • memory/3208-6-0x0000000002D30000-0x0000000002D46000-memory.dmp

    Filesize

    88KB

  • memory/3208-209-0x00007FF916680000-0x00007FF917141000-memory.dmp

    Filesize

    10.8MB

  • memory/3208-7-0x0000000002D50000-0x0000000002D5A000-memory.dmp

    Filesize

    40KB

  • memory/3208-5-0x0000000002D20000-0x0000000002D30000-memory.dmp

    Filesize

    64KB

  • memory/3208-4-0x0000000002D10000-0x0000000002D18000-memory.dmp

    Filesize

    32KB

  • memory/3208-3-0x0000000002D00000-0x0000000002D0E000-memory.dmp

    Filesize

    56KB

  • memory/3208-2-0x00007FF916680000-0x00007FF917141000-memory.dmp

    Filesize

    10.8MB

  • memory/3208-1-0x0000000000AF0000-0x0000000000BEC000-memory.dmp

    Filesize

    1008KB