Analysis

  • max time kernel
    127s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/10/2022, 11:51

General

  • Target

    28d55ff0ca8fe40b3b804185a5bafdfb.exe

  • Size

    2.5MB

  • MD5

    28d55ff0ca8fe40b3b804185a5bafdfb

  • SHA1

    064bedd8c601b3ffe82516d2a93c32dbceabe7fe

  • SHA256

    d2a045481f7045693ba6b2c8091879cfa7d4bd9458b8ed2c274af130737a7a07

  • SHA512

    762a1407258568d0f8bfa532672f4036c53c8c47ae11d95dae9b15caf91c43fc7b167c4092e7ea866e7243d9f3f0e61330ef0bc62f991d9514d877de0abcf490

  • SSDEEP

    49152:Uno4gjXMihQWbtlaXD72pi8F+J9HlAffWl5IXdWsop9CYYjp+8X:CCMiu5X2pi8F+JxOfOl5IGpHYb

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 6 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 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Drops file in Program Files directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 6 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 54 IoCs
  • Suspicious use of AdjustPrivilegeToken 17 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\28d55ff0ca8fe40b3b804185a5bafdfb.exe
    "C:\Users\Admin\AppData\Local\Temp\28d55ff0ca8fe40b3b804185a5bafdfb.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3956
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1000
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/$Recycle.Bin/'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:940
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Documents and Settings/'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4924
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/odt/'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1876
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/PerfLogs/'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2232
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Program Files/'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1832
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Program Files (x86)/'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2584
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/ProgramData/'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2204
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Recovery/'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4560
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/System Volume Information/'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2364
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Users/'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3724
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Windows/'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4572
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\ZRkRg4YZkF.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:760
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:4468
        • C:\Program Files\VideoLAN\VLC\plugins\d3d11\upfc.exe
          "C:\Program Files\VideoLAN\VLC\plugins\d3d11\upfc.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2356
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 5 /tr "'C:\Users\Default User\upfc.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4528
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "upfc" /sc ONLOGON /tr "'C:\Users\Default User\upfc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2716
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 14 /tr "'C:\Users\Default User\upfc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2984
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 14 /tr "'C:\Program Files\VideoLAN\VLC\plugins\d3d11\upfc.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2724
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "upfc" /sc ONLOGON /tr "'C:\Program Files\VideoLAN\VLC\plugins\d3d11\upfc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3392
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 5 /tr "'C:\Program Files\VideoLAN\VLC\plugins\d3d11\upfc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2412
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4008

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Program Files\VideoLAN\VLC\plugins\d3d11\upfc.exe

      Filesize

      2.5MB

      MD5

      05e658bbf01dd490abd4ae41c48453d4

      SHA1

      2b0d94eadd178ae00ce277cc3cd030751a5fad63

      SHA256

      ea9575bc5d5c8ae996484af45c2e55d9f30fa8fae81715743a4149e9460be2e3

      SHA512

      6c1597714b0191f232445bc1d8e8eccd04a402d5cf43ac5cfd6e436d7a57a27a4fa7af8c3dd76bde8453cfb245bd8b3feaff16f16154a5361fd66c64aa63fe77

    • C:\Program Files\VideoLAN\VLC\plugins\d3d11\upfc.exe

      Filesize

      2.5MB

      MD5

      05e658bbf01dd490abd4ae41c48453d4

      SHA1

      2b0d94eadd178ae00ce277cc3cd030751a5fad63

      SHA256

      ea9575bc5d5c8ae996484af45c2e55d9f30fa8fae81715743a4149e9460be2e3

      SHA512

      6c1597714b0191f232445bc1d8e8eccd04a402d5cf43ac5cfd6e436d7a57a27a4fa7af8c3dd76bde8453cfb245bd8b3feaff16f16154a5361fd66c64aa63fe77

    • 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

      3a6bad9528f8e23fb5c77fbd81fa28e8

      SHA1

      f127317c3bc6407f536c0f0600dcbcf1aabfba36

      SHA256

      986366767de5873f1b170a63f2a33ce05132d1afd90c8f5017afbca8ef1beb05

      SHA512

      846002154a0ece6f3e9feda6f115d3161dc21b3789525dd62ae1d9188495171293efdbe7be4710666dd8a15e66b557315b5a02918a741ed1d5f3ff0c515b98e2

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

      Filesize

      944B

      MD5

      3a6bad9528f8e23fb5c77fbd81fa28e8

      SHA1

      f127317c3bc6407f536c0f0600dcbcf1aabfba36

      SHA256

      986366767de5873f1b170a63f2a33ce05132d1afd90c8f5017afbca8ef1beb05

      SHA512

      846002154a0ece6f3e9feda6f115d3161dc21b3789525dd62ae1d9188495171293efdbe7be4710666dd8a15e66b557315b5a02918a741ed1d5f3ff0c515b98e2

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

      Filesize

      944B

      MD5

      3a6bad9528f8e23fb5c77fbd81fa28e8

      SHA1

      f127317c3bc6407f536c0f0600dcbcf1aabfba36

      SHA256

      986366767de5873f1b170a63f2a33ce05132d1afd90c8f5017afbca8ef1beb05

      SHA512

      846002154a0ece6f3e9feda6f115d3161dc21b3789525dd62ae1d9188495171293efdbe7be4710666dd8a15e66b557315b5a02918a741ed1d5f3ff0c515b98e2

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

      Filesize

      944B

      MD5

      17fbfbe3f04595e251287a6bfcdc35de

      SHA1

      b576aabfd5e6d5799d487011506ed1ae70688987

      SHA256

      2e61ae727ca01496c9418a65777d6d7e05a85cbdb6b3a19516857442e5bd2da0

      SHA512

      449c68512d90a17f598e9dacfd6230e6e97bc6bfaaf2b06f3b91b370ece92e2322b81ee3721e288880fa1f05470156e519256e3f03d786c3b28a39788f5e0ad6

    • 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

      944B

      MD5

      e243a38635ff9a06c87c2a61a2200656

      SHA1

      ecd95ed5bf1a9fbe96a8448fc2814a0210fa2afc

      SHA256

      af5782703f3f2d5a29fb313dae6680a64134db26064d4a321a3f23b75f6ca00f

      SHA512

      4418957a1b10eee44cf270c81816ae707352411c4f5ac14b6b61ab537c91480e24e0a0a2c276a6291081b4984c123cf673a45dcedb0ceeef682054ba0fc19cb4

    • 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

      944B

      MD5

      e243a38635ff9a06c87c2a61a2200656

      SHA1

      ecd95ed5bf1a9fbe96a8448fc2814a0210fa2afc

      SHA256

      af5782703f3f2d5a29fb313dae6680a64134db26064d4a321a3f23b75f6ca00f

      SHA512

      4418957a1b10eee44cf270c81816ae707352411c4f5ac14b6b61ab537c91480e24e0a0a2c276a6291081b4984c123cf673a45dcedb0ceeef682054ba0fc19cb4

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

      Filesize

      944B

      MD5

      aaaac7c68d2b7997ed502c26fd9f65c2

      SHA1

      7c5a3731300d672bf53c43e2f9e951c745f7fbdf

      SHA256

      8724dc2c3c8e8f17aeefae44a23741b1ea3b43c490fbc52fd61575ffe1cd82bb

      SHA512

      c526febd9430413b48bed976edd9a795793ad1f06c8ff4f6b768b4ad63f4d2f06b9da72d4fcfa7cb9530a64e2dc3554f5ad97fd0ab60129701d175f2724ef1ac

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

      Filesize

      944B

      MD5

      aaaac7c68d2b7997ed502c26fd9f65c2

      SHA1

      7c5a3731300d672bf53c43e2f9e951c745f7fbdf

      SHA256

      8724dc2c3c8e8f17aeefae44a23741b1ea3b43c490fbc52fd61575ffe1cd82bb

      SHA512

      c526febd9430413b48bed976edd9a795793ad1f06c8ff4f6b768b4ad63f4d2f06b9da72d4fcfa7cb9530a64e2dc3554f5ad97fd0ab60129701d175f2724ef1ac

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

      Filesize

      944B

      MD5

      5f0ddc7f3691c81ee14d17b419ba220d

      SHA1

      f0ef5fde8bab9d17c0b47137e014c91be888ee53

      SHA256

      a31805264b8b13ce4145f272cb2830728c186c46e314b48514d636866217add5

      SHA512

      2ce7c2a0833f581297c13dd88ccfcd36bf129d2b5d7718c52b1d67c97cbd8fc93abc085a040229a0fd712e880c690de7f6b996b0b47c46a091fabb7931be58d3

    • C:\Users\Admin\AppData\Local\Temp\ZRkRg4YZkF.bat

      Filesize

      217B

      MD5

      36de6227c25430c53fedd18b038740a3

      SHA1

      e97ecabefd73d6b7b4f5309a49f99dc4cba191eb

      SHA256

      2b80b5c7c5c3f66dfa0d7133b82b5f58d0332923c0d72be82a89e0fa263bb8c5

      SHA512

      0d2f1d6181c82bfb3033f1120a065b5ef199a8da76388e1db0bdcd3ddc39a722c5376a505b30fe71d864e038ecf80db379a31e65bacf53746569af2961811f76

    • memory/940-147-0x00000214AEA80000-0x00000214AEAA2000-memory.dmp

      Filesize

      136KB

    • memory/940-150-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/940-168-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/1000-149-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/1000-170-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/1832-180-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/1832-155-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/1876-179-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/1876-153-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/2204-185-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/2204-158-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/2232-169-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/2232-154-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/2356-192-0x00007FFDB6650000-0x00007FFDB7111000-memory.dmp

      Filesize

      10.8MB

    • memory/2356-191-0x0000000000250000-0x00000000004CE000-memory.dmp

      Filesize

      2.5MB

    • memory/2356-193-0x000000001D110000-0x000000001D2D2000-memory.dmp

      Filesize

      1.8MB

    • memory/2356-194-0x00007FFDB6650000-0x00007FFDB7111000-memory.dmp

      Filesize

      10.8MB

    • memory/2364-160-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/2364-171-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/2584-176-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/2584-156-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/3724-187-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/3724-161-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/3956-134-0x000000001CB40000-0x000000001CB90000-memory.dmp

      Filesize

      320KB

    • memory/3956-151-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/3956-133-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/3956-132-0x00000000005D0000-0x000000000084E000-memory.dmp

      Filesize

      2.5MB

    • memory/4560-182-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/4560-159-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/4572-163-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/4572-184-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/4924-152-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB

    • memory/4924-173-0x00007FFDB69A0000-0x00007FFDB7461000-memory.dmp

      Filesize

      10.8MB