Analysis

  • max time kernel
    148s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    12-02-2022 01:35

General

  • Target

    a6dbadcf01250b7cb443bc3db5cde3355ea831bccf4d9f72c9d6bd2c11677554.exe

  • Size

    5.3MB

  • MD5

    bba1bdfef7cc8d44ad93a65943263c7d

  • SHA1

    c3a3b6690d07c032214ed870d4b6e3a7ad474077

  • SHA256

    a6dbadcf01250b7cb443bc3db5cde3355ea831bccf4d9f72c9d6bd2c11677554

  • SHA512

    0467e862df0d2b2b37b4982dca78f7c8b2079e2060f2252bc3122d9a644292be57372cb4d899a2dfd335093623e133db088b33bc6a9661b5b8453cc341c1c76c

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Blocklisted process makes network request 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Checks BIOS information in registry 2 TTPs 6 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 1 IoCs
  • Themida packer 15 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 3 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Drops file in Windows directory 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a6dbadcf01250b7cb443bc3db5cde3355ea831bccf4d9f72c9d6bd2c11677554.exe
    "C:\Users\Admin\AppData\Local\Temp\a6dbadcf01250b7cb443bc3db5cde3355ea831bccf4d9f72c9d6bd2c11677554.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:5056
    • C:\Users\Admin\AppData\Local\Temp\tongan\sacque.exe
      "C:\Users\Admin\AppData\Local\Temp\tongan\sacque.exe"
      2⤵
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1648
      • C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe
        "C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe"
        3⤵
        • Executes dropped EXE
        • Checks BIOS information in registry
        • Checks whether UAC is enabled
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: EnumeratesProcesses
        PID:5080
    • C:\Users\Admin\AppData\Local\Temp\tongan\tilmusvp.exe
      "C:\Users\Admin\AppData\Local\Temp\tongan\tilmusvp.exe"
      2⤵
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Checks computer location settings
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Checks processor information in registry
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2008
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\pryqpgenup.vbs"
        3⤵
          PID:384
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\ajqjmlwxjle.vbs"
          3⤵
          • Blocklisted process makes network request
          PID:3944
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
      1⤵
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:444
    • C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
      C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
      1⤵
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:1400

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751

      MD5

      54e9306f95f32e50ccd58af19753d929

      SHA1

      eab9457321f34d4dcf7d4a0ac83edc9131bf7c57

      SHA256

      45f94dceb18a8f738a26da09ce4558995a4fe02b971882e8116fc9b59813bb72

      SHA512

      8711a4d866f21cdf4d4e6131ec4cfaf6821d0d22b90946be8b5a09ab868af0270a89bc326f03b858f0361a83c11a1531b894dfd1945e4812ba429a7558791f4f

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751

      MD5

      b3ba2d9d6f7d2f82ee2e0a13fbb80bd4

      SHA1

      90cd876f6f356dff3fcf6ae4893a20ac42463776

      SHA256

      3e18c99461226fff5f590b4a449941fb5a416854b677afbc8b4da0fed1dc397e

      SHA512

      5a210d8292280f23383947e746c0d1c1ecc7d2fd241d1f655cb67085f49dc46120ac7a2783c798a3fd9cdc23d6b77ea0b55cd363867c015195b77d35d4e7cce5

    • C:\Users\Admin\AppData\Local\Temp\ajqjmlwxjle.vbs

      MD5

      cabb587feb7786fc02fbfe49054d99fe

      SHA1

      e9bb3124135f18dc9227c260aa758a0f7950a41d

      SHA256

      050b0214122363a9f3f2dfd71976966d3b96e8defe7cf3a006fa8d2993a132a1

      SHA512

      fd55ab572a06abb37b972169b68baa06d1bdb4f81d94d1036642c5b41ca373c4d8caeed8cc77227a773a019901cf0a298a9d93fa4c564d7cb856924b50198993

    • C:\Users\Admin\AppData\Local\Temp\nsj2336.tmp\UAC.dll

      MD5

      adb29e6b186daa765dc750128649b63d

      SHA1

      160cbdc4cb0ac2c142d361df138c537aa7e708c9

      SHA256

      2f7f8fc05dc4fd0d5cda501b47e4433357e887bbfed7292c028d99c73b52dc08

      SHA512

      b28adcccf0c33660fecd6f95f28f11f793dc9988582187617b4c113fb4e6fdad4cf7694cd8c0300a477e63536456894d119741a940dda09b7df3ff0087a7eada

    • C:\Users\Admin\AppData\Local\Temp\pryqpgenup.vbs

      MD5

      ad3fc7b14d06ddff8f7f54c456714907

      SHA1

      f0b22111d055d730ee84682c54bd53cd384a8db9

      SHA256

      35d47b75e04a7affcafffc62eb44a6f8650dd59daabb3576c75d0cad61b94e8b

      SHA512

      0deef89bbb9a9d2859afa4596e680f73cf9aed92b8673014b72de79c659f7a04c7e5cf44963bb059b60160a236c2c88769cf4fe827a6fa2b8d933828e271bf7e

    • C:\Users\Admin\AppData\Local\Temp\tongan\sacque.exe

      MD5

      47d659b3fa14c54b9700012da8cf2d92

      SHA1

      da9a4a73ad5a6d9d71750c9e3684bfbca25b7b2a

      SHA256

      c3d4a3acdf7e36217b4b9799b5f34f1302e57c3406656ef74c8ed6c4ef30b641

      SHA512

      0eec877866ab22b18cc6a826865a6227a189eb28c65562a469ed9821d26dcf8f0bf9fd27c106e3f717360008cd596ec9fe4452545812726be5434350611c1785

    • C:\Users\Admin\AppData\Local\Temp\tongan\sacque.exe

      MD5

      47d659b3fa14c54b9700012da8cf2d92

      SHA1

      da9a4a73ad5a6d9d71750c9e3684bfbca25b7b2a

      SHA256

      c3d4a3acdf7e36217b4b9799b5f34f1302e57c3406656ef74c8ed6c4ef30b641

      SHA512

      0eec877866ab22b18cc6a826865a6227a189eb28c65562a469ed9821d26dcf8f0bf9fd27c106e3f717360008cd596ec9fe4452545812726be5434350611c1785

    • C:\Users\Admin\AppData\Local\Temp\tongan\tilmusvp.exe

      MD5

      a6026b1816d99fddc64093331fbbcb06

      SHA1

      8882f31a568642bbc68294001187a90166c188a0

      SHA256

      31e3fb9f538ac8e99c37516e1fdbb39ecefa156fb351d1f3c7b1769630502554

      SHA512

      4ebc406781d91601ba3277aa21737d6e434c21bd42f2d3260ce7d90bfb1458d140e2842efc85866f5c330847a71dfe302f842b782238d6422fa160e5047ada00

    • C:\Users\Admin\AppData\Local\Temp\tongan\tilmusvp.exe

      MD5

      a6026b1816d99fddc64093331fbbcb06

      SHA1

      8882f31a568642bbc68294001187a90166c188a0

      SHA256

      31e3fb9f538ac8e99c37516e1fdbb39ecefa156fb351d1f3c7b1769630502554

      SHA512

      4ebc406781d91601ba3277aa21737d6e434c21bd42f2d3260ce7d90bfb1458d140e2842efc85866f5c330847a71dfe302f842b782238d6422fa160e5047ada00

    • C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe

      MD5

      47d659b3fa14c54b9700012da8cf2d92

      SHA1

      da9a4a73ad5a6d9d71750c9e3684bfbca25b7b2a

      SHA256

      c3d4a3acdf7e36217b4b9799b5f34f1302e57c3406656ef74c8ed6c4ef30b641

      SHA512

      0eec877866ab22b18cc6a826865a6227a189eb28c65562a469ed9821d26dcf8f0bf9fd27c106e3f717360008cd596ec9fe4452545812726be5434350611c1785

    • C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe

      MD5

      47d659b3fa14c54b9700012da8cf2d92

      SHA1

      da9a4a73ad5a6d9d71750c9e3684bfbca25b7b2a

      SHA256

      c3d4a3acdf7e36217b4b9799b5f34f1302e57c3406656ef74c8ed6c4ef30b641

      SHA512

      0eec877866ab22b18cc6a826865a6227a189eb28c65562a469ed9821d26dcf8f0bf9fd27c106e3f717360008cd596ec9fe4452545812726be5434350611c1785

    • memory/444-145-0x0000021C5DAE0000-0x0000021C5DAE4000-memory.dmp

      Filesize

      16KB

    • memory/444-144-0x0000021C5B420000-0x0000021C5B430000-memory.dmp

      Filesize

      64KB

    • memory/444-143-0x0000021C5AD60000-0x0000021C5AD70000-memory.dmp

      Filesize

      64KB

    • memory/1648-136-0x0000000000370000-0x0000000000A59000-memory.dmp

      Filesize

      6.9MB

    • memory/1648-140-0x0000000000370000-0x0000000000A59000-memory.dmp

      Filesize

      6.9MB

    • memory/1648-137-0x0000000000370000-0x0000000000A59000-memory.dmp

      Filesize

      6.9MB

    • memory/1648-135-0x0000000077164000-0x0000000077166000-memory.dmp

      Filesize

      8KB

    • memory/2008-141-0x00000000007D0000-0x0000000000E44000-memory.dmp

      Filesize

      6.5MB

    • memory/2008-139-0x00000000007D0000-0x0000000000E44000-memory.dmp

      Filesize

      6.5MB

    • memory/2008-138-0x00000000007D0000-0x0000000000E44000-memory.dmp

      Filesize

      6.5MB

    • memory/5080-148-0x0000000000180000-0x0000000000869000-memory.dmp

      Filesize

      6.9MB

    • memory/5080-149-0x0000000000180000-0x0000000000869000-memory.dmp

      Filesize

      6.9MB

    • memory/5080-150-0x0000000000180000-0x0000000000869000-memory.dmp

      Filesize

      6.9MB