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Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/02/2024, 16:44

General

  • Target

    6ab0890a2aedb8d21048be3cb8fcaf6ba8fe22d418fec483bdba53e68ab430f6.exe

  • Size

    3.1MB

  • MD5

    2c03d2d911694cd33c23b0edafd33ff0

  • SHA1

    c16efb40930aec5b7f894b78f9b6f04bfc03fa0f

  • SHA256

    6ab0890a2aedb8d21048be3cb8fcaf6ba8fe22d418fec483bdba53e68ab430f6

  • SHA512

    b02b123bfb5d5ef55820315887ceecbdb4ecdc50f7af241a9b6b722baedcce0b6441e1553d1ccbc85b091ac84c1c4801d8cdcc291575d8a4dc1afa974fc76dee

  • SSDEEP

    49152:xp70LTonM7JrVV+t8Z6e8hyF9kdrq8ChhGpg2U/KQ7d5tQX:gfonMdBVZYyjACh0DUB71

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 30 IoCs

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

  • DCRat payload 4 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
  • Drops file in Program Files directory 9 IoCs
  • Drops file in Windows directory 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 30 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 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\6ab0890a2aedb8d21048be3cb8fcaf6ba8fe22d418fec483bdba53e68ab430f6.exe
    "C:\Users\Admin\AppData\Local\Temp\6ab0890a2aedb8d21048be3cb8fcaf6ba8fe22d418fec483bdba53e68ab430f6.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4476
    • C:\Windows\Setup\State\backgroundTaskHost.exe
      "C:\Windows\Setup\State\backgroundTaskHost.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4144
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows Mail\fontdrvhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3716
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Mail\fontdrvhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4508
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows Mail\fontdrvhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:496
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 9 /tr "'C:\Windows\Setup\State\backgroundTaskHost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4460
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Windows\Setup\State\backgroundTaskHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3568
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 7 /tr "'C:\Windows\Setup\State\backgroundTaskHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4408
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Microsoft\Temp\EU8B19.tmp\backgroundTaskHost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:684
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft\Temp\EU8B19.tmp\backgroundTaskHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1624
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Microsoft\Temp\EU8B19.tmp\backgroundTaskHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:976
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\sihost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1084
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\sihost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4064
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\sihost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2180
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smsss" /sc MINUTE /mo 5 /tr "'C:\odt\smss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1920
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\odt\smss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2564
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smsss" /sc MINUTE /mo 12 /tr "'C:\odt\smss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1640
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\Windows\en-US\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4536
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\en-US\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4048
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Windows\en-US\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4532
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Common Files\System\de-DE\sysmon.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2448
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Program Files (x86)\Common Files\System\de-DE\sysmon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3032
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Common Files\System\de-DE\sysmon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1148
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "MusNotificationM" /sc MINUTE /mo 6 /tr "'C:\Windows\TAPI\MusNotification.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3148
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "MusNotification" /sc ONLOGON /tr "'C:\Windows\TAPI\MusNotification.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3436
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "MusNotificationM" /sc MINUTE /mo 13 /tr "'C:\Windows\TAPI\MusNotification.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4868
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\Idle.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4468
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\Idle.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3312
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\Idle.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2436
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 8 /tr "'C:\Users\Public\sihost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1892
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Users\Public\sihost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1256
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 14 /tr "'C:\Users\Public\sihost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1352

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\Setup\State\backgroundTaskHost.exe

    Filesize

    1.2MB

    MD5

    666e5550b80681e32bfd5a0e6b59e521

    SHA1

    72dadc545f9d2e6b8dfd6362b3626d9be384a777

    SHA256

    ceda91b6d750f1e451c06c6c8c8896c64826d7c0e64e359d0692e2d9a91e95f3

    SHA512

    e91ae82a0bf53d79c00198ecfc7d649b695ebdad7b561efce0ddf5f9b5c01b6cb0d9b0976375749cec4702eec038da92b7e0cf081c63e10d0d8001c39e0df69d

  • C:\Windows\Setup\State\backgroundTaskHost.exe

    Filesize

    1.3MB

    MD5

    51ea81686aef5e6d503c1ed719ac4787

    SHA1

    42b7a2823f1f77744b21b2f5f4ca6ea6489e9bd5

    SHA256

    ca45b6891d00a57ccbf4d4e012079eaab863c1bb3bef1a4b8414dacdcc91db67

    SHA512

    564a035c3b998884a91c5aabd09632606ad0aa29b554b538f4a7de59f2547b51e80c29d197fbdd55c7ee9c8d3a1765b11bc745d5356e949c4c82dbd61d8fa3e1

  • C:\odt\smss.exe

    Filesize

    3.1MB

    MD5

    2c03d2d911694cd33c23b0edafd33ff0

    SHA1

    c16efb40930aec5b7f894b78f9b6f04bfc03fa0f

    SHA256

    6ab0890a2aedb8d21048be3cb8fcaf6ba8fe22d418fec483bdba53e68ab430f6

    SHA512

    b02b123bfb5d5ef55820315887ceecbdb4ecdc50f7af241a9b6b722baedcce0b6441e1553d1ccbc85b091ac84c1c4801d8cdcc291575d8a4dc1afa974fc76dee

  • memory/4144-35-0x00007FFA5F780000-0x00007FFA60241000-memory.dmp

    Filesize

    10.8MB

  • memory/4144-36-0x00000000019E0000-0x00000000019F0000-memory.dmp

    Filesize

    64KB

  • memory/4144-38-0x00007FFA5F780000-0x00007FFA60241000-memory.dmp

    Filesize

    10.8MB

  • memory/4476-0-0x0000000000A30000-0x0000000000D54000-memory.dmp

    Filesize

    3.1MB

  • memory/4476-1-0x00007FFA5F780000-0x00007FFA60241000-memory.dmp

    Filesize

    10.8MB

  • memory/4476-2-0x0000000001670000-0x0000000001680000-memory.dmp

    Filesize

    64KB

  • memory/4476-34-0x00007FFA5F780000-0x00007FFA60241000-memory.dmp

    Filesize

    10.8MB