Analysis

  • max time kernel
    118s
  • max time network
    168s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    15-02-2022 13:44

General

  • Target

    488c8ca1ddf12bd8a8a137cedc546c17b436839a1c91382bb6e6f3e333a63648.exe

  • Size

    6.0MB

  • MD5

    a2d41440e015f546c646d23e96bba3fb

  • SHA1

    d42da38f61490026b421d5ac37618f84978fa42e

  • SHA256

    488c8ca1ddf12bd8a8a137cedc546c17b436839a1c91382bb6e6f3e333a63648

  • SHA512

    7fc71dcef3f8e33b0b31e5611bcdbea4db0e43833df0daf9a798206baf5574a09a14c7e9e1a3496404e22fca2993eb654748879bf8ce040a1b5e08f3d1902b94

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.

  • Drops startup file 1 IoCs
  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\488c8ca1ddf12bd8a8a137cedc546c17b436839a1c91382bb6e6f3e333a63648.exe
    "C:\Users\Admin\AppData\Local\Temp\488c8ca1ddf12bd8a8a137cedc546c17b436839a1c91382bb6e6f3e333a63648.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:408
    • C:\Users\Admin\AppData\Local\Temp\runkly\bescab.exe
      "C:\Users\Admin\AppData\Local\Temp\runkly\bescab.exe"
      2⤵
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Drops startup file
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of WriteProcessMemory
      PID:4488
      • C:\Users\Admin\AppData\Roaming\Intel Rapid\IntelRapid.exe
        "C:\Users\Admin\AppData\Roaming\Intel Rapid\IntelRapid.exe"
        3⤵
        • Executes dropped EXE
        • Checks BIOS information in registry
        • Checks whether UAC is enabled
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious behavior: AddClipboardFormatListener
        PID:4336
    • C:\Users\Admin\AppData\Local\Temp\runkly\chawervp.exe
      "C:\Users\Admin\AppData\Local\Temp\runkly\chawervp.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:4464
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\itlctxncaeh.vbs"
        3⤵
          PID:4012
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\pvaorjoqh.vbs"
          3⤵
          • Blocklisted process makes network request
          PID:3280
    • 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:908
    • 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:2908

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Virtualization/Sandbox Evasion

    1
    T1497

    Discovery

    Query Registry

    4
    T1012

    Virtualization/Sandbox Evasion

    1
    T1497

    System Information Discovery

    5
    T1082

    Command and Control

    Web Service

    1
    T1102

    Replay Monitor

    Loading Replay Monitor...

    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

      d53b5780264bf0c3e3ce0423c03856a2

      SHA1

      3c7c200ef4916408526912613e0bf7e86b01f1d7

      SHA256

      313601ddc9b2de8637d56c50010fdd2bc2a84cfd5da588cd4296c4e2309b9519

      SHA512

      92d056fc6d7ea00e7ccf4dfc06d31f1685525d3e9898e25bb63939eb3d49258eca05a5be36c0e1d63f9fda13edd130b8cb54744018a240ce3c955d3ae6750efe

    • C:\Users\Admin\AppData\Local\Temp\itlctxncaeh.vbs
      MD5

      cd5c117a693e9eb28c19460f0b795aed

      SHA1

      4ed7f5ed2dbd90646ee0f2319122fb764ed293c0

      SHA256

      80121df406fd8624a36001c2a272e9803a68074b4cc9611a3c13ba1c2b9c19b3

      SHA512

      d9b89d8b51d379426253c5b8206b49a7a635be965f108ccb4429a455fc72dfa1eb77cec04646ca641285ec389097383284ec2e8b22888c5bcff42b2e3ebd5a98

    • C:\Users\Admin\AppData\Local\Temp\nsr9C4E.tmp\UAC.dll
      MD5

      adb29e6b186daa765dc750128649b63d

      SHA1

      160cbdc4cb0ac2c142d361df138c537aa7e708c9

      SHA256

      2f7f8fc05dc4fd0d5cda501b47e4433357e887bbfed7292c028d99c73b52dc08

      SHA512

      b28adcccf0c33660fecd6f95f28f11f793dc9988582187617b4c113fb4e6fdad4cf7694cd8c0300a477e63536456894d119741a940dda09b7df3ff0087a7eada

    • C:\Users\Admin\AppData\Local\Temp\pvaorjoqh.vbs
      MD5

      7dc9e07622a084bf1b7ddcdd7fc20361

      SHA1

      bb1fa51e5600ff56b0f019513c5e7513fab86fa4

      SHA256

      355aafc258f2b231cc4ae35e8c8f26fa682b67d10fa16b8fdd6398267e9844ae

      SHA512

      33f7be042e28de097dafad1a9023d2e8b4cd45ad8082237fe09edc213369848146edee9ba229d12d08bf16a187ae10750fb130fcbcd17c8643f5c0c807fe3f65

    • C:\Users\Admin\AppData\Local\Temp\runkly\bescab.exe
      MD5

      7353d83c321cb341abed242c33856850

      SHA1

      10207907f7cc70fc0735c0415f21590775fff835

      SHA256

      21a8f01c939e887621a2e3b25ab165a135a842a695fbaec75a1cf13a67fabd37

      SHA512

      275e19eaad5bdd067694d96e5bfe5e27079b6bfd8953ce3519fa5cb80a8b62add21c453a81a9bf7845dad0801871297db2d3de740ef8c74ef718faef5430544c

    • C:\Users\Admin\AppData\Local\Temp\runkly\bescab.exe
      MD5

      7353d83c321cb341abed242c33856850

      SHA1

      10207907f7cc70fc0735c0415f21590775fff835

      SHA256

      21a8f01c939e887621a2e3b25ab165a135a842a695fbaec75a1cf13a67fabd37

      SHA512

      275e19eaad5bdd067694d96e5bfe5e27079b6bfd8953ce3519fa5cb80a8b62add21c453a81a9bf7845dad0801871297db2d3de740ef8c74ef718faef5430544c

    • C:\Users\Admin\AppData\Local\Temp\runkly\chawervp.exe
      MD5

      2ca1fa563d961e96561622edcab5d864

      SHA1

      d9fcd898fe5ddc4a19ae97a6c4ff1f2664a808ac

      SHA256

      dc0b3b9b3bdc64d5074f2126ed397258effa721601c645428bcc653b8cdf2f4e

      SHA512

      916443f39a0e14431b369a6b9c8d37ab12689559f39f3bbd0f9988aa17db2a914c01c9e14cbf7be92146427046e81c76e3dc91f1e767428079c60956e1414b7d

    • C:\Users\Admin\AppData\Local\Temp\runkly\chawervp.exe
      MD5

      2ca1fa563d961e96561622edcab5d864

      SHA1

      d9fcd898fe5ddc4a19ae97a6c4ff1f2664a808ac

      SHA256

      dc0b3b9b3bdc64d5074f2126ed397258effa721601c645428bcc653b8cdf2f4e

      SHA512

      916443f39a0e14431b369a6b9c8d37ab12689559f39f3bbd0f9988aa17db2a914c01c9e14cbf7be92146427046e81c76e3dc91f1e767428079c60956e1414b7d

    • C:\Users\Admin\AppData\Roaming\Intel Rapid\IntelRapid.exe
      MD5

      7353d83c321cb341abed242c33856850

      SHA1

      10207907f7cc70fc0735c0415f21590775fff835

      SHA256

      21a8f01c939e887621a2e3b25ab165a135a842a695fbaec75a1cf13a67fabd37

      SHA512

      275e19eaad5bdd067694d96e5bfe5e27079b6bfd8953ce3519fa5cb80a8b62add21c453a81a9bf7845dad0801871297db2d3de740ef8c74ef718faef5430544c

    • C:\Users\Admin\AppData\Roaming\Intel Rapid\IntelRapid.exe
      MD5

      7353d83c321cb341abed242c33856850

      SHA1

      10207907f7cc70fc0735c0415f21590775fff835

      SHA256

      21a8f01c939e887621a2e3b25ab165a135a842a695fbaec75a1cf13a67fabd37

      SHA512

      275e19eaad5bdd067694d96e5bfe5e27079b6bfd8953ce3519fa5cb80a8b62add21c453a81a9bf7845dad0801871297db2d3de740ef8c74ef718faef5430544c

    • memory/908-151-0x0000021409280000-0x0000021409284000-memory.dmp
      Filesize

      16KB

    • memory/908-150-0x0000021406590000-0x00000214065A0000-memory.dmp
      Filesize

      64KB

    • memory/908-149-0x0000021406530000-0x0000021406540000-memory.dmp
      Filesize

      64KB

    • memory/4336-147-0x00007FF737B50000-0x00007FF7384B3000-memory.dmp
      Filesize

      9.4MB

    • memory/4336-145-0x00007FF737B50000-0x00007FF7384B3000-memory.dmp
      Filesize

      9.4MB

    • memory/4336-146-0x00007FF737B50000-0x00007FF7384B3000-memory.dmp
      Filesize

      9.4MB

    • memory/4464-142-0x0000000000140000-0x00000000007AE000-memory.dmp
      Filesize

      6.4MB

    • memory/4464-140-0x0000000000140000-0x00000000007AE000-memory.dmp
      Filesize

      6.4MB

    • memory/4464-139-0x0000000077104000-0x0000000077106000-memory.dmp
      Filesize

      8KB

    • memory/4464-138-0x0000000000140000-0x00000000007AE000-memory.dmp
      Filesize

      6.4MB

    • memory/4488-141-0x00007FF604170000-0x00007FF604AD3000-memory.dmp
      Filesize

      9.4MB

    • memory/4488-137-0x00007FFC61650000-0x00007FFC61652000-memory.dmp
      Filesize

      8KB

    • memory/4488-136-0x00007FF604170000-0x00007FF604AD3000-memory.dmp
      Filesize

      9.4MB

    • memory/4488-135-0x00007FF604170000-0x00007FF604AD3000-memory.dmp
      Filesize

      9.4MB