Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    31-05-2024 18:37

General

  • Target

    0cc4a5350887ecd6d55eed9b617d34c43f6579218545d522318f3e6d64460175.exe

  • Size

    4.0MB

  • MD5

    aac697ab0d583fcc8641ce4365b1fea2

  • SHA1

    57ada9976d56f577b18f005dcc369258d70259fc

  • SHA256

    0cc4a5350887ecd6d55eed9b617d34c43f6579218545d522318f3e6d64460175

  • SHA512

    cbe76916ecdf7d3afabde6459e4d3355db529a22f2fd834ade8e50b61eb62a8ef9f3ff46a7091108bc2f54b40d035f3a26605d1ed65b0e945b2fe7fe07c86071

  • SSDEEP

    49152:XYIdUmmujCJIMTmrXMdgjexOXKIDNKKCEBiYvWmiAafeQT/v4QlSVfwRA/ld2MnV:IIav/IMTmzMdgN/xvW1A/QTY1KAwMZP

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 27 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.

  • Detects executables packed with SmartAssembly 5 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 27 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 9 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.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\0cc4a5350887ecd6d55eed9b617d34c43f6579218545d522318f3e6d64460175.exe
    "C:\Users\Admin\AppData\Local\Temp\0cc4a5350887ecd6d55eed9b617d34c43f6579218545d522318f3e6d64460175.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:2732
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\hTBm4Zzp74.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1720
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:2788
        • C:\Users\Public\lsm.exe
          "C:\Users\Public\lsm.exe"
          3⤵
          • UAC bypass
          • Executes dropped EXE
          • Checks whether UAC is enabled
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • System policy modification
          PID:584
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\MSOCache\All Users\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2136
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\MSOCache\All Users\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2604
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2936
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "0cc4a5350887ecd6d55eed9b617d34c43f6579218545d522318f3e6d644601750" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\Searches\0cc4a5350887ecd6d55eed9b617d34c43f6579218545d522318f3e6d64460175.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2468
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "0cc4a5350887ecd6d55eed9b617d34c43f6579218545d522318f3e6d64460175" /sc ONLOGON /tr "'C:\Users\Admin\Searches\0cc4a5350887ecd6d55eed9b617d34c43f6579218545d522318f3e6d64460175.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2880
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "0cc4a5350887ecd6d55eed9b617d34c43f6579218545d522318f3e6d644601750" /sc MINUTE /mo 12 /tr "'C:\Users\Admin\Searches\0cc4a5350887ecd6d55eed9b617d34c43f6579218545d522318f3e6d64460175.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2140
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 10 /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\wininit.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2236
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2272
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 13 /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:624
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 14 /tr "'C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\1033\winlogon.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1256
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\1033\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1932
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 10 /tr "'C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\1033\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2008
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 13 /tr "'C:\Users\Default\Downloads\wininit.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2232
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Users\Default\Downloads\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1052
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 13 /tr "'C:\Users\Default\Downloads\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1020
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsml" /sc MINUTE /mo 9 /tr "'C:\Users\Public\lsm.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2220
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Users\Public\lsm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2004
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsml" /sc MINUTE /mo 9 /tr "'C:\Users\Public\lsm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2044
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 9 /tr "'C:\Windows\Panther\setup.exe\dllhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1964
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Windows\Panther\setup.exe\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:680
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 13 /tr "'C:\Windows\Panther\setup.exe\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:576
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "servicess" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows Defender\es-ES\services.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1500
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Defender\es-ES\services.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2336
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "servicess" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows Defender\es-ES\services.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:284
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "servicess" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\10\services.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1680
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\10\services.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2968
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "servicess" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\10\services.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2748
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2812

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\hTBm4Zzp74.bat

      Filesize

      188B

      MD5

      7bfacbd73b2493df4594ba4a661e0256

      SHA1

      4fd813381c8bf956457f23b8c63ab8b897129b46

      SHA256

      ee0da9e31d85ed4749f9be2ceb9f26a00b5c8f648f7e2022d4d83e9e03ae2eeb

      SHA512

      c0a009bbd85e64783fed7940b91ef33b68192ce94e7555a1704103a01e591db48909a55df1201251a9012290760e2151ffca852bc2b0dd2f9669ba8f4b376eaf

    • C:\Users\Default\Downloads\wininit.exe

      Filesize

      4.0MB

      MD5

      aac697ab0d583fcc8641ce4365b1fea2

      SHA1

      57ada9976d56f577b18f005dcc369258d70259fc

      SHA256

      0cc4a5350887ecd6d55eed9b617d34c43f6579218545d522318f3e6d64460175

      SHA512

      cbe76916ecdf7d3afabde6459e4d3355db529a22f2fd834ade8e50b61eb62a8ef9f3ff46a7091108bc2f54b40d035f3a26605d1ed65b0e945b2fe7fe07c86071

    • memory/584-59-0x000000001B050000-0x000000001B0A6000-memory.dmp

      Filesize

      344KB

    • memory/584-58-0x0000000000380000-0x0000000000782000-memory.dmp

      Filesize

      4.0MB

    • memory/2732-18-0x0000000000EE0000-0x0000000000EF2000-memory.dmp

      Filesize

      72KB

    • memory/2732-21-0x000000001AEE0000-0x000000001AEE8000-memory.dmp

      Filesize

      32KB

    • memory/2732-6-0x0000000000B70000-0x0000000000B78000-memory.dmp

      Filesize

      32KB

    • memory/2732-8-0x0000000000CC0000-0x0000000000CC8000-memory.dmp

      Filesize

      32KB

    • memory/2732-7-0x0000000000CA0000-0x0000000000CB6000-memory.dmp

      Filesize

      88KB

    • memory/2732-9-0x0000000000CD0000-0x0000000000CE2000-memory.dmp

      Filesize

      72KB

    • memory/2732-10-0x0000000000E90000-0x0000000000E9C000-memory.dmp

      Filesize

      48KB

    • memory/2732-11-0x0000000000CE0000-0x0000000000CE8000-memory.dmp

      Filesize

      32KB

    • memory/2732-12-0x0000000000E80000-0x0000000000E90000-memory.dmp

      Filesize

      64KB

    • memory/2732-13-0x0000000000EA0000-0x0000000000EAA000-memory.dmp

      Filesize

      40KB

    • memory/2732-14-0x0000000000FF0000-0x0000000001046000-memory.dmp

      Filesize

      344KB

    • memory/2732-15-0x0000000000EB0000-0x0000000000EBC000-memory.dmp

      Filesize

      48KB

    • memory/2732-16-0x0000000000EC0000-0x0000000000ECC000-memory.dmp

      Filesize

      48KB

    • memory/2732-17-0x0000000000ED0000-0x0000000000ED8000-memory.dmp

      Filesize

      32KB

    • memory/2732-0-0x000007FEF59F3000-0x000007FEF59F4000-memory.dmp

      Filesize

      4KB

    • memory/2732-19-0x000000001AEC0000-0x000000001AEC8000-memory.dmp

      Filesize

      32KB

    • memory/2732-20-0x000000001AED0000-0x000000001AEDC000-memory.dmp

      Filesize

      48KB

    • memory/2732-5-0x0000000000C80000-0x0000000000C9C000-memory.dmp

      Filesize

      112KB

    • memory/2732-22-0x000000001AEF0000-0x000000001AF46000-memory.dmp

      Filesize

      344KB

    • memory/2732-23-0x000000001AF40000-0x000000001AF4C000-memory.dmp

      Filesize

      48KB

    • memory/2732-24-0x000000001AF50000-0x000000001AF58000-memory.dmp

      Filesize

      32KB

    • memory/2732-25-0x000000001AF60000-0x000000001AF6C000-memory.dmp

      Filesize

      48KB

    • memory/2732-26-0x000000001AF70000-0x000000001AF7E000-memory.dmp

      Filesize

      56KB

    • memory/2732-27-0x000000001AF80000-0x000000001AF88000-memory.dmp

      Filesize

      32KB

    • memory/2732-28-0x000000001AF90000-0x000000001AF98000-memory.dmp

      Filesize

      32KB

    • memory/2732-29-0x000000001AFE0000-0x000000001AFE8000-memory.dmp

      Filesize

      32KB

    • memory/2732-30-0x000000001AFF0000-0x000000001AFFA000-memory.dmp

      Filesize

      40KB

    • memory/2732-31-0x000000001B000000-0x000000001B00C000-memory.dmp

      Filesize

      48KB

    • memory/2732-4-0x0000000000AE0000-0x0000000000AE8000-memory.dmp

      Filesize

      32KB

    • memory/2732-54-0x000007FEF59F0000-0x000007FEF63DC000-memory.dmp

      Filesize

      9.9MB

    • memory/2732-3-0x0000000000AD0000-0x0000000000ADE000-memory.dmp

      Filesize

      56KB

    • memory/2732-2-0x000007FEF59F0000-0x000007FEF63DC000-memory.dmp

      Filesize

      9.9MB

    • memory/2732-1-0x0000000001040000-0x0000000001442000-memory.dmp

      Filesize

      4.0MB