Analysis

  • max time kernel
    128s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    01/12/2022, 04:36

General

  • Target
    44ae1edbd57ab9a2355dd4500d0e1f20.exe
  • Size 1.8MB
  • Sample221201-e795dsec62
  • SHA256 112e29903c6705e92dc217af3dd518c8ba29f7d992e746cf6c33c11f241e2f2f
  • MD5 SHA1 SHA512 SSDEEP
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 9 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.

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Drops file in Windows 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 9 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 14 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\44ae1edbd57ab9a2355dd4500d0e1f20.exe
    "C:\Users\Admin\AppData\Local\Temp\44ae1edbd57ab9a2355dd4500d0e1f20.exe"
    1⤵
    • Drops file in Drivers directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1408
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/'
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1728
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/$Recycle.Bin/'
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:268
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Documents and Settings/'
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2028
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/MSOCache/'
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1672
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/PerfLogs/'
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:972
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Program Files/'
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1656
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Program Files (x86)/'
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:880
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/ProgramData/'
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1952
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Recovery/'
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:964
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/System Volume Information/'
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:900
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Users/'
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1812
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Windows/'
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1628
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\Kdioc4MGud.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2080
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:2116
        • C:\Recovery\d6223342-1a8a-11ed-b209-a59dca5554ed\lsass.exe
          "C:\Recovery\d6223342-1a8a-11ed-b209-a59dca5554ed\lsass.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          PID:2136
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 12 /tr "'C:\Users\Admin\Local Settings\winlogon.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1772
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Users\Admin\Local Settings\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1456
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 12 /tr "'C:\Users\Admin\Local Settings\winlogon.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 "lsassl" /sc MINUTE /mo 10 /tr "'C:\Recovery\d6223342-1a8a-11ed-b209-a59dca5554ed\lsass.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1044
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Recovery\d6223342-1a8a-11ed-b209-a59dca5554ed\lsass.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1628
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 5 /tr "'C:\Recovery\d6223342-1a8a-11ed-b209-a59dca5554ed\lsass.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 "IdleI" /sc MINUTE /mo 7 /tr "'C:\Windows\debug\WIA\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1264
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Windows\debug\WIA\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1600
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 8 /tr "'C:\Windows\debug\WIA\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1868

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          lsass.exe

          • Path C:\Recovery\d6223342-1a8a-11ed-b209-a59dca5554ed\lsass.exe
          • Size 1.8MB
          • SHA256 80180dcc660965fae021b029867e13615ba8e41d1213dcfedb5b4721deb10a38
          • MD5 SHA1 SHA512 SSDEEP

          lsass.exe

          • Path C:\Recovery\d6223342-1a8a-11ed-b209-a59dca5554ed\lsass.exe
          • Size 1.8MB
          • SHA256 80180dcc660965fae021b029867e13615ba8e41d1213dcfedb5b4721deb10a38
          • MD5 SHA1 SHA512 SSDEEP

          Kdioc4MGud.bat

          • Path C:\Users\Admin\AppData\Local\Temp\Kdioc4MGud.bat
          • Size 223B
          • SHA256 a3af81a8f357aa6426c4bc49d0dd60738860ae347360243d5610d70ebd5f6613
          • MD5 SHA1 SHA512

          590aee7bdd69b59b.customDestinations-ms

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
          • Size 7KB
          • SHA256 9b197e5907ab91f55f41aee4012c292c577a954625a1a8474dbd13e144961295
          • MD5 SHA1 SHA512 SSDEEP

          590aee7bdd69b59b.customDestinations-ms

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
          • Size 7KB
          • SHA256 9b197e5907ab91f55f41aee4012c292c577a954625a1a8474dbd13e144961295
          • MD5 SHA1 SHA512 SSDEEP

          590aee7bdd69b59b.customDestinations-ms

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
          • Size 7KB
          • SHA256 9b197e5907ab91f55f41aee4012c292c577a954625a1a8474dbd13e144961295
          • MD5 SHA1 SHA512 SSDEEP

          590aee7bdd69b59b.customDestinations-ms

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
          • Size 7KB
          • SHA256 9b197e5907ab91f55f41aee4012c292c577a954625a1a8474dbd13e144961295
          • MD5 SHA1 SHA512 SSDEEP

          590aee7bdd69b59b.customDestinations-ms

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
          • Size 7KB
          • SHA256 9b197e5907ab91f55f41aee4012c292c577a954625a1a8474dbd13e144961295
          • MD5 SHA1 SHA512 SSDEEP

          590aee7bdd69b59b.customDestinations-ms

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
          • Size 7KB
          • SHA256 9b197e5907ab91f55f41aee4012c292c577a954625a1a8474dbd13e144961295
          • MD5 SHA1 SHA512 SSDEEP

          590aee7bdd69b59b.customDestinations-ms

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
          • Size 7KB
          • SHA256 9b197e5907ab91f55f41aee4012c292c577a954625a1a8474dbd13e144961295
          • MD5 SHA1 SHA512 SSDEEP

          590aee7bdd69b59b.customDestinations-ms

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
          • Size 7KB
          • SHA256 9b197e5907ab91f55f41aee4012c292c577a954625a1a8474dbd13e144961295
          • MD5 SHA1 SHA512 SSDEEP

          590aee7bdd69b59b.customDestinations-ms

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
          • Size 7KB
          • SHA256 9b197e5907ab91f55f41aee4012c292c577a954625a1a8474dbd13e144961295
          • MD5 SHA1 SHA512 SSDEEP

          590aee7bdd69b59b.customDestinations-ms

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
          • Size 7KB
          • SHA256 9b197e5907ab91f55f41aee4012c292c577a954625a1a8474dbd13e144961295
          • MD5 SHA1 SHA512 SSDEEP

          memory/268-155-0x000000001B7A0000-0x000000001BA9F000-memory.dmp

          memory/268-165-0x0000000001EAB000-0x0000000001ECA000-memory.dmp

          memory/268-180-0x0000000001EAB000-0x0000000001ECA000-memory.dmp

          memory/268-133-0x0000000001EA4000-0x0000000001EA7000-memory.dmp

          memory/268-86-0x000007FEE9A30000-0x000007FEEA453000-memory.dmp

          memory/268-179-0x0000000001EA4000-0x0000000001EA7000-memory.dmp

          memory/268-75-0x000007FEFB8B1000-0x000007FEFB8B3000-memory.dmp

          memory/268-130-0x000007FEECAF0000-0x000007FEED64D000-memory.dmp

          memory/880-184-0x0000000002384000-0x0000000002387000-memory.dmp

          memory/880-153-0x000000001B7E0000-0x000000001BADF000-memory.dmp

          memory/880-137-0x0000000002384000-0x0000000002387000-memory.dmp

          memory/880-187-0x000000000238B000-0x00000000023AA000-memory.dmp

          memory/880-170-0x000000000238B000-0x00000000023AA000-memory.dmp

          memory/880-144-0x000007FEECAF0000-0x000007FEED64D000-memory.dmp

          memory/880-122-0x000007FEE9A30000-0x000007FEEA453000-memory.dmp

          memory/900-136-0x00000000028B4000-0x00000000028B7000-memory.dmp

          memory/900-181-0x00000000028B4000-0x00000000028B7000-memory.dmp

          memory/900-182-0x00000000028BB000-0x00000000028DA000-memory.dmp

          memory/900-159-0x000000001B780000-0x000000001BA7F000-memory.dmp

          memory/900-164-0x00000000028BB000-0x00000000028DA000-memory.dmp

          memory/900-146-0x000007FEECAF0000-0x000007FEED64D000-memory.dmp

          memory/900-121-0x000007FEE9A30000-0x000007FEEA453000-memory.dmp

          memory/964-143-0x000007FEECAF0000-0x000007FEED64D000-memory.dmp

          memory/964-149-0x000000001B830000-0x000000001BB2F000-memory.dmp

          memory/964-171-0x000000000244B000-0x000000000246A000-memory.dmp

          memory/964-141-0x0000000002444000-0x0000000002447000-memory.dmp

          memory/964-183-0x0000000002444000-0x0000000002447000-memory.dmp

          memory/964-124-0x000007FEE9A30000-0x000007FEEA453000-memory.dmp

          memory/964-185-0x000000000244B000-0x000000000246A000-memory.dmp

          memory/972-152-0x000000001B8A0000-0x000000001BB9F000-memory.dmp

          memory/972-126-0x0000000002414000-0x0000000002417000-memory.dmp

          memory/972-89-0x000007FEE9A30000-0x000007FEEA453000-memory.dmp

          memory/972-189-0x0000000002414000-0x0000000002417000-memory.dmp

          memory/972-125-0x000007FEECAF0000-0x000007FEED64D000-memory.dmp

          memory/972-169-0x000000000241B000-0x000000000243A000-memory.dmp

          memory/972-190-0x000000000241B000-0x000000000243A000-memory.dmp

          memory/1408-68-0x0000000000C10000-0x0000000000C1C000-memory.dmp

          memory/1408-58-0x0000000000620000-0x0000000000636000-memory.dmp

          memory/1408-59-0x0000000000470000-0x0000000000482000-memory.dmp

          memory/1408-119-0x000000001AFE6000-0x000000001B005000-memory.dmp

          memory/1408-60-0x0000000000640000-0x0000000000650000-memory.dmp

          memory/1408-61-0x0000000000650000-0x000000000065C000-memory.dmp

          memory/1408-62-0x0000000000660000-0x0000000000668000-memory.dmp

          memory/1408-63-0x0000000000B20000-0x0000000000B32000-memory.dmp

          memory/1408-57-0x00000000001F0000-0x0000000000200000-memory.dmp

          memory/1408-56-0x0000000000160000-0x0000000000168000-memory.dmp

          memory/1408-110-0x000000001AFE6000-0x000000001B005000-memory.dmp

          memory/1408-64-0x0000000000B50000-0x0000000000B5C000-memory.dmp

          memory/1408-65-0x0000000000BE0000-0x0000000000BEA000-memory.dmp

          memory/1408-66-0x0000000000BF0000-0x0000000000BFE000-memory.dmp

          memory/1408-67-0x0000000000C00000-0x0000000000C08000-memory.dmp

          memory/1408-55-0x0000000000600000-0x000000000061C000-memory.dmp

          memory/1408-69-0x000000001AFE6000-0x000000001B005000-memory.dmp

          memory/1408-54-0x0000000000C30000-0x0000000000DF8000-memory.dmp

          memory/1628-139-0x00000000027A4000-0x00000000027A7000-memory.dmp

          memory/1628-173-0x00000000027A4000-0x00000000027A7000-memory.dmp

          memory/1628-161-0x00000000027AB000-0x00000000027CA000-memory.dmp

          memory/1628-156-0x000000001B790000-0x000000001BA8F000-memory.dmp

          memory/1628-123-0x000007FEE9A30000-0x000007FEEA453000-memory.dmp

          memory/1628-147-0x000007FEECAF0000-0x000007FEED64D000-memory.dmp

          memory/1628-176-0x00000000027AB000-0x00000000027CA000-memory.dmp

          memory/1656-175-0x0000000002484000-0x0000000002487000-memory.dmp

          memory/1656-148-0x000007FEECAF0000-0x000007FEED64D000-memory.dmp

          memory/1656-177-0x000000000248B000-0x00000000024AA000-memory.dmp

          memory/1656-135-0x0000000002484000-0x0000000002487000-memory.dmp

          memory/1656-118-0x000007FEE9A30000-0x000007FEEA453000-memory.dmp

          memory/1656-154-0x000000001B7D0000-0x000000001BACF000-memory.dmp

          memory/1656-162-0x000000000248B000-0x00000000024AA000-memory.dmp

          memory/1672-168-0x000000000257B000-0x000000000259A000-memory.dmp

          memory/1672-134-0x0000000002574000-0x0000000002577000-memory.dmp

          memory/1672-90-0x000007FEE9A30000-0x000007FEEA453000-memory.dmp

          memory/1672-191-0x0000000002574000-0x0000000002577000-memory.dmp

          memory/1672-142-0x000007FEECAF0000-0x000007FEED64D000-memory.dmp

          memory/1672-192-0x000000000257B000-0x000000000259A000-memory.dmp

          memory/1672-151-0x000000001B820000-0x000000001BB1F000-memory.dmp

          memory/1728-172-0x000000000236B000-0x000000000238A000-memory.dmp

          memory/1728-127-0x000007FEECAF0000-0x000007FEED64D000-memory.dmp

          memory/1728-174-0x0000000002364000-0x0000000002367000-memory.dmp

          memory/1728-178-0x000000000236B000-0x000000000238A000-memory.dmp

          memory/1728-140-0x0000000002364000-0x0000000002367000-memory.dmp

          memory/1728-85-0x000007FEE9A30000-0x000007FEEA453000-memory.dmp

          memory/1728-160-0x000000001B6E0000-0x000000001B9DF000-memory.dmp

          memory/1812-167-0x00000000028AB000-0x00000000028CA000-memory.dmp

          memory/1812-188-0x00000000028AB000-0x00000000028CA000-memory.dmp

          memory/1812-120-0x000007FEE9A30000-0x000007FEEA453000-memory.dmp

          memory/1812-145-0x000007FEECAF0000-0x000007FEED64D000-memory.dmp

          memory/1812-186-0x00000000028A4000-0x00000000028A7000-memory.dmp

          memory/1812-138-0x00000000028A4000-0x00000000028A7000-memory.dmp

          memory/1812-150-0x000000001B850000-0x000000001BB4F000-memory.dmp

          memory/1952-158-0x000000001B760000-0x000000001BA5F000-memory.dmp

          memory/1952-117-0x000007FEE9A30000-0x000007FEEA453000-memory.dmp

          memory/1952-193-0x00000000022D4000-0x00000000022D7000-memory.dmp

          memory/1952-128-0x000007FEECAF0000-0x000007FEED64D000-memory.dmp

          memory/1952-131-0x00000000022D4000-0x00000000022D7000-memory.dmp

          memory/1952-166-0x00000000022DB000-0x00000000022FA000-memory.dmp

          memory/2028-132-0x0000000001F14000-0x0000000001F17000-memory.dmp

          memory/2028-163-0x0000000001F1B000-0x0000000001F3A000-memory.dmp

          memory/2028-116-0x000007FEE9A30000-0x000007FEEA453000-memory.dmp

          memory/2028-129-0x000007FEECAF0000-0x000007FEED64D000-memory.dmp

          memory/2136-115-0x0000000000850000-0x0000000000A18000-memory.dmp