Analysis

  • max time kernel
    118s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    20-01-2025 14:06

General

  • Target

    6b4372f45d14a2f2b5d64d153e31b65436936921bceee.exe

  • Size

    2.6MB

  • MD5

    95a33349fd2a84e397b2f406d86ecf91

  • SHA1

    aa12a73b3de5be31c77dac39d4d3a6a70269429f

  • SHA256

    6b4372f45d14a2f2b5d64d153e31b65436936921bceeeb8b01585f71a8c0e1bf

  • SHA512

    3fc5579a23da99e5ed41bd91bcbcf241a8cafb466bfa94d131ddc4f1d12c8d755361595d70e19e707d81f1d1ce5efc0e36b8579e47d9372f5da16a05b7c96ea1

  • SSDEEP

    49152:0bB7GpqxgFuANb7UqRDIZ63KYV4JOU5/FZ53aqWVPVrNCddRrvawu:0bBSpeOuU7U4SC44U5DprauPu

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 21 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.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Drops file in Program Files directory 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 21 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 32 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\6b4372f45d14a2f2b5d64d153e31b65436936921bceee.exe
    "C:\Users\Admin\AppData\Local\Temp\6b4372f45d14a2f2b5d64d153e31b65436936921bceee.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2516
    • C:\Users\Admin\AppData\Roaming\Install_JJSploit16.8.exe
      "C:\Users\Admin\AppData\Roaming\Install_JJSploit16.8.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2992
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Runtimehost\MYWzp0a6xwrEK5S4UF.vbe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3060
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c ""C:\Runtimehost\pQImPX9m1y2f8C.bat" "
          4⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2860
          • C:\Runtimehost\chainsavesref.exe
            "C:\Runtimehost\chainsavesref.exe"
            5⤵
            • Executes dropped EXE
            • Drops file in Program Files directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2752
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\clGSey4NYH.bat"
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:916
              • C:\Windows\system32\w32tm.exe
                w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
                7⤵
                  PID:280
                • C:\Program Files\Microsoft Games\Purble Place\ja-JP\Idle.exe
                  "C:\Program Files\Microsoft Games\Purble Place\ja-JP\Idle.exe"
                  7⤵
                  • Executes dropped EXE
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:988
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Runtimehost\file.vbs"
          3⤵
          • System Location Discovery: System Language Discovery
          PID:2784
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 5 /tr "'C:\Runtimehost\WmiPrvSE.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1632
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Runtimehost\WmiPrvSE.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1568
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 13 /tr "'C:\Runtimehost\WmiPrvSE.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:668
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 12 /tr "'C:\Runtimehost\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2644
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Runtimehost\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1348
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 13 /tr "'C:\Runtimehost\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1840
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 8 /tr "'C:\Program Files\Microsoft Games\Purble Place\ja-JP\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2400
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files\Microsoft Games\Purble Place\ja-JP\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1892
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 11 /tr "'C:\Program Files\Microsoft Games\Purble Place\ja-JP\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1560
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 9 /tr "'C:\Recovery\1f276ee2-69f6-11ef-8b31-62cb582c238c\spoolsv.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2120
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Recovery\1f276ee2-69f6-11ef-8b31-62cb582c238c\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:856
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 5 /tr "'C:\Recovery\1f276ee2-69f6-11ef-8b31-62cb582c238c\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2876
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsml" /sc MINUTE /mo 9 /tr "'C:\Runtimehost\lsm.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1192
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Runtimehost\lsm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1176
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsml" /sc MINUTE /mo 11 /tr "'C:\Runtimehost\lsm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2116
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 5 /tr "'C:\Program Files\7-Zip\Lang\wininit.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2952
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files\7-Zip\Lang\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:812
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 12 /tr "'C:\Program Files\7-Zip\Lang\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:536
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows NT\TableTextService\en-US\explorer.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:632
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\TableTextService\en-US\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1828
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows NT\TableTextService\en-US\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:584

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Runtimehost\MYWzp0a6xwrEK5S4UF.vbe

      Filesize

      202B

      MD5

      ecf0d0693e7b19616fab6c1923ce1bca

      SHA1

      11a4d520d950f72c8575faf33e15037e68d36712

      SHA256

      4b3af66a1c0ed2ef1bf7b55ca6940cada614229200dae62024b03c08b7f843d6

      SHA512

      a8503afbcc63814c567d666c81b8428c2cd00709c89346e1570c065922ebc014fc296663cc3131148a58f4344a45f1142851aa0ed2754b21445912accf05341f

    • C:\Runtimehost\file.vbs

      Filesize

      34B

      MD5

      677cc4360477c72cb0ce00406a949c61

      SHA1

      b679e8c3427f6c5fc47c8ac46cd0e56c9424de05

      SHA256

      f1cccb5ae4aa51d293bd3c7d2a1a04cb7847d22c5db8e05ac64e9a6d7455aa0b

      SHA512

      7cfe2cc92f9e659f0a15a295624d611b3363bd01eb5bcf9bc7681ea9b70b0564d192d570d294657c8dc2c93497fa3b4526c975a9bf35d69617c31d9936573c6a

    • C:\Runtimehost\pQImPX9m1y2f8C.bat

      Filesize

      34B

      MD5

      315845ba3d99cbfaeec438a8dddee9ae

      SHA1

      9b210d6f805af769de23ae060844a1dddcf9cdce

      SHA256

      704a1a651e6b566a4a0e54d95de33d5c55a330d75c0b4456b3fa4c2ba4718a97

      SHA512

      3b5a0364038167ac3133f43f9eb6b85090612a30c27ab3920adc8c18a4a7fc8eb030378819dd9be98227ae668dcdf5779d9feb5993d99e9b02de57bf5622cbc7

    • C:\Users\Admin\AppData\Local\Temp\clGSey4NYH.bat

      Filesize

      225B

      MD5

      0f62d8ad2968f327ed228f5222cac2eb

      SHA1

      561a19bcaa3a944cf250407a3abf10a0c71f93d3

      SHA256

      4a2dd205df0116c6f4cf50f7b4d462685f02787831c78c854af10f846871fddd

      SHA512

      527d568c09f6d778f76b6ab9e2ffe4fa167a1fd6f77a0e18343470cf38ee8cc861c9c4505d46b00fe763f8c65c5adf216bc0952c845d4c4169f934ec95b63d88

    • C:\Users\Admin\AppData\Roaming\Install_JJSploit16.8.exe

      Filesize

      2.6MB

      MD5

      1d3f70e65723398ca3ffefd0f346ef0e

      SHA1

      40c6926b7abbfaab25806f6e9bb88e9f52c87007

      SHA256

      50d21266acc179352743c1bf14ada681f4f6517ed240ac1ded4f094a1248a95c

      SHA512

      02044791a8e8b40625bebd7ea902066222ed00d94065a22b5d8ac39d539e5295d5345259f9fabdc6c2a3c95579e978fe8914f6c1fe640b5a2869082499a57d6d

    • \Runtimehost\chainsavesref.exe

      Filesize

      2.3MB

      MD5

      afc7c278c420c1c025a97af636a4f6cd

      SHA1

      d5af2fd0336518756ee300dd4fb5106959adcaf7

      SHA256

      f817634c1236f507c749742bd1bae393b74d2d29620128ecc50037205f175cc7

      SHA512

      12a401f94aa941e56e116c9981626b50d18e592b1550ff5198fef47895a43a56fcbe77f6e88cd8951d01e7c05a4a6d80ce54176257ec47c9a219b1dece62337a

    • memory/988-57-0x00000000004C0000-0x00000000004D2000-memory.dmp

      Filesize

      72KB

    • memory/988-56-0x00000000007E0000-0x0000000000836000-memory.dmp

      Filesize

      344KB

    • memory/988-55-0x0000000000060000-0x00000000002B2000-memory.dmp

      Filesize

      2.3MB

    • memory/2516-1-0x0000000000330000-0x00000000005D4000-memory.dmp

      Filesize

      2.6MB

    • memory/2516-0-0x000007FEF5C13000-0x000007FEF5C14000-memory.dmp

      Filesize

      4KB

    • memory/2752-27-0x0000000000350000-0x000000000036C000-memory.dmp

      Filesize

      112KB

    • memory/2752-31-0x0000000000530000-0x000000000053E000-memory.dmp

      Filesize

      56KB

    • memory/2752-32-0x00000000005E0000-0x00000000005E8000-memory.dmp

      Filesize

      32KB

    • memory/2752-33-0x0000000000BA0000-0x0000000000BA8000-memory.dmp

      Filesize

      32KB

    • memory/2752-30-0x0000000000370000-0x0000000000382000-memory.dmp

      Filesize

      72KB

    • memory/2752-29-0x0000000000E00000-0x0000000000E56000-memory.dmp

      Filesize

      344KB

    • memory/2752-28-0x0000000000510000-0x0000000000526000-memory.dmp

      Filesize

      88KB

    • memory/2752-26-0x0000000000E80000-0x00000000010D2000-memory.dmp

      Filesize

      2.3MB