Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    30-11-2024 17:40

General

  • Target

    62e056d86cf91f172914969927d2306e52facc801903f08f8a9a1b49cd34a960N.exe

  • Size

    2.6MB

  • MD5

    c48a32fe9ab79809fd6921ec76072980

  • SHA1

    974d3211e7e6b8a51025eab1a172d07068c8c8c4

  • SHA256

    62e056d86cf91f172914969927d2306e52facc801903f08f8a9a1b49cd34a960

  • SHA512

    385d9cbf1604a9ffa12b762b80f23f5a47517c8f2522c745af3ce2121da72fbc37b1dd88e5ba4733dbbaefd4fdbc823b5d9ed07b3584bba75e22b0445e85584f

  • SSDEEP

    49152:Z35SQwOGHHy3Gv6KelFCGDZPU542T5eYfn4jmnHwDKni5Js:ZpSQEHIKqFCGDZs54+5eYfnCMQ+i5J

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 7 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 10 IoCs
  • Drops file in Windows directory 6 IoCs
  • 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 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\62e056d86cf91f172914969927d2306e52facc801903f08f8a9a1b49cd34a960N.exe
    "C:\Users\Admin\AppData\Local\Temp\62e056d86cf91f172914969927d2306e52facc801903f08f8a9a1b49cd34a960N.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:1720
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\GfjYQKm8o8.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:644
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:2260
        • C:\Recovery\480d7142-91a3-11ef-b9f6-6e5a89f5a3c7\explorer.exe
          "C:\Recovery\480d7142-91a3-11ef-b9f6-6e5a89f5a3c7\explorer.exe"
          3⤵
          • UAC bypass
          • Executes dropped EXE
          • Checks whether UAC is enabled
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • System policy modification
          PID:1804
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 14 /tr "'C:\Recovery\480d7142-91a3-11ef-b9f6-6e5a89f5a3c7\explorer.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2868
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Recovery\480d7142-91a3-11ef-b9f6-6e5a89f5a3c7\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2844
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 8 /tr "'C:\Recovery\480d7142-91a3-11ef-b9f6-6e5a89f5a3c7\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2988
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 7 /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\wininit.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2896
    • 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
      • Scheduled Task/Job: Scheduled Task
      PID:2492
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 8 /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2756
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 14 /tr "'C:\Users\Default\Recent\dllhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2712
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Users\Default\Recent\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2772
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 11 /tr "'C:\Users\Default\Recent\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2340
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Uninstall Information\spoolsv.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2520
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Program Files (x86)\Uninstall Information\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1240
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Uninstall Information\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:688
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 13 /tr "'C:\Users\All Users\Package Cache\explorer.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1496
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Users\All Users\Package Cache\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2888
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\Package Cache\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:776
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Windows Photo Viewer\de-DE\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:476
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Photo Viewer\de-DE\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:572
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows Photo Viewer\de-DE\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2768

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Program Files (x86)\Windows Photo Viewer\de-DE\Idle.exe

      Filesize

      2.6MB

      MD5

      86169fe054c74025a2f6300e5b0249a9

      SHA1

      f3dd0d5ac1723bb4837ea667f14e3c289b71b934

      SHA256

      3e782a60941004c76244d9b5eff6f19c4e5829fb9c2b28699abe27fd1d61629e

      SHA512

      e915c3945e571b6b19a9eb0867850178186a3e117fabc3e9de56d19ea4030d3a559e56a93b062e16d70c6cba63b6edbc4a7b5e879ec6eeedc8b4af76f0c4446d

    • C:\ProgramData\Package Cache\explorer.exe

      Filesize

      2.6MB

      MD5

      c48a32fe9ab79809fd6921ec76072980

      SHA1

      974d3211e7e6b8a51025eab1a172d07068c8c8c4

      SHA256

      62e056d86cf91f172914969927d2306e52facc801903f08f8a9a1b49cd34a960

      SHA512

      385d9cbf1604a9ffa12b762b80f23f5a47517c8f2522c745af3ce2121da72fbc37b1dd88e5ba4733dbbaefd4fdbc823b5d9ed07b3584bba75e22b0445e85584f

    • C:\Recovery\480d7142-91a3-11ef-b9f6-6e5a89f5a3c7\explorer.exe

      Filesize

      2.6MB

      MD5

      fc0074a3ec005d5b98fbd0519d310f3e

      SHA1

      8e7892fca46d041b0b3fb83c52c9756cbaa82ea5

      SHA256

      6575240a19b2738a4e6d153f187b537acbc1210e3b9cb8dd5825dde3bf045ac7

      SHA512

      c378f6aa02e1d930ff3c70e37aba855bdbf36575221d5d2f69cd4ce6b367556a9931c64baa123556fe4752331ce22e85e4bca97bf6a616d4c035aa7312cd5fa3

    • C:\Users\Admin\AppData\Local\Temp\CabED7C.tmp

      Filesize

      70KB

      MD5

      49aebf8cbd62d92ac215b2923fb1b9f5

      SHA1

      1723be06719828dda65ad804298d0431f6aff976

      SHA256

      b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

      SHA512

      bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

    • C:\Users\Admin\AppData\Local\Temp\GfjYQKm8o8.bat

      Filesize

      226B

      MD5

      fbd5e3538f9d13f09b25102aa4f310b4

      SHA1

      a78828eabf9ed7a36d5bfda08ea11ffb31defc7e

      SHA256

      09a92febd666f789e46f107abeef246026db3299cedf63d4ca00a40166067260

      SHA512

      e2d4fe0720ec760f0fb1d031e335e5af10dcee52788a48b34a4e99a95a115282fac5ef8df662fc8b72b10e68b7aad950dd092ffdede68135842ba8af8a8910cc

    • C:\Users\Admin\AppData\Local\Temp\TarED9F.tmp

      Filesize

      181KB

      MD5

      4ea6026cf93ec6338144661bf1202cd1

      SHA1

      a1dec9044f750ad887935a01430bf49322fbdcb7

      SHA256

      8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

      SHA512

      6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

    • C:\Users\Default\AppData\Roaming\Microsoft\Windows\Recent\dllhost.exe

      Filesize

      2.6MB

      MD5

      cc49840922eb40fd2bb22683f3d726de

      SHA1

      375ffc11abcceb5ba2b8cac5e56117ce78afa71b

      SHA256

      b0b7a65cc0a6d5adc60f546ad7042df5309b46a7a9948461f3f1de62c7e6704e

      SHA512

      a853e1caff328b4bc352ea50941b7f116175dc35fb85483f524ed7d6ff87771da37ac7cbcc4d9636ca5f7ff84f23c13de6f341d9f9fd4e794179b5e3304f2f70

    • C:\Windows\BitLockerDiscoveryVolumeContents\wininit.exe

      Filesize

      2.6MB

      MD5

      5c000a5c5707ad6511c40eb042176387

      SHA1

      3a727fc9b65af38696417e110a8d858f6476585f

      SHA256

      f45fc7ed8239e4344449b6be2dcdc22e071ab8f43723268f1c6fc09b6ef925d8

      SHA512

      908e349a82e16132bbfb6f1e0878073762e8259b3d4341cc61cbf40232d8c3fec9c9824435890e28434b8506d31fe9de21ebea13f7b23cdbe6c2f1d2c7ae46d4

    • memory/1720-7-0x00000000006F0000-0x0000000000706000-memory.dmp

      Filesize

      88KB

    • memory/1720-8-0x0000000000710000-0x0000000000718000-memory.dmp

      Filesize

      32KB

    • memory/1720-10-0x0000000000730000-0x0000000000786000-memory.dmp

      Filesize

      344KB

    • memory/1720-11-0x0000000000CC0000-0x0000000000CC8000-memory.dmp

      Filesize

      32KB

    • memory/1720-12-0x0000000000CD0000-0x0000000000CE2000-memory.dmp

      Filesize

      72KB

    • memory/1720-13-0x0000000000D80000-0x0000000000D88000-memory.dmp

      Filesize

      32KB

    • memory/1720-14-0x0000000000D90000-0x0000000000D98000-memory.dmp

      Filesize

      32KB

    • memory/1720-15-0x0000000000DA0000-0x0000000000DAC000-memory.dmp

      Filesize

      48KB

    • memory/1720-16-0x0000000000DB0000-0x0000000000DBE000-memory.dmp

      Filesize

      56KB

    • memory/1720-17-0x0000000000DC0000-0x0000000000DCC000-memory.dmp

      Filesize

      48KB

    • memory/1720-18-0x0000000000DD0000-0x0000000000DDA000-memory.dmp

      Filesize

      40KB

    • memory/1720-9-0x0000000000720000-0x000000000072A000-memory.dmp

      Filesize

      40KB

    • memory/1720-0-0x000007FEF5B73000-0x000007FEF5B74000-memory.dmp

      Filesize

      4KB

    • memory/1720-6-0x00000000006E0000-0x00000000006F0000-memory.dmp

      Filesize

      64KB

    • memory/1720-5-0x00000000006D0000-0x00000000006D8000-memory.dmp

      Filesize

      32KB

    • memory/1720-4-0x00000000006B0000-0x00000000006CC000-memory.dmp

      Filesize

      112KB

    • memory/1720-109-0x000007FEF5B70000-0x000007FEF655C000-memory.dmp

      Filesize

      9.9MB

    • memory/1720-3-0x00000000006A0000-0x00000000006AE000-memory.dmp

      Filesize

      56KB

    • memory/1720-1-0x0000000000DF0000-0x0000000001098000-memory.dmp

      Filesize

      2.7MB

    • memory/1720-2-0x000007FEF5B70000-0x000007FEF655C000-memory.dmp

      Filesize

      9.9MB

    • memory/1804-115-0x00000000006B0000-0x00000000006C2000-memory.dmp

      Filesize

      72KB

    • memory/1804-114-0x0000000000650000-0x00000000006A6000-memory.dmp

      Filesize

      344KB

    • memory/1804-113-0x0000000000860000-0x0000000000B08000-memory.dmp

      Filesize

      2.7MB