Analysis

  • max time kernel
    150s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    25/06/2022, 05:15

General

  • Target
    63664023b7d97149d0fc324513987feac3fe98de9796d1702f44ae2c68f6b29e.exe
  • Size 4.3MB
  • Sample220625-fxjecshgc2
  • SHA256 63664023b7d97149d0fc324513987feac3fe98de9796d1702f44ae2c68f6b29e
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • CryptBot

    A C++ stealer distributed widely in bundle with other software.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
  • Blocklisted process makes network request 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks BIOS information in registry 2 TTPs 4 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.

  • Identifies Wine through registry keys 2 TTPs 2 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • 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
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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 2 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: EnumeratesProcesses 4 IoCs
  • Suspicious use of FindShellTrayWindow 12 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\63664023b7d97149d0fc324513987feac3fe98de9796d1702f44ae2c68f6b29e.exe
    "C:\Users\Admin\AppData\Local\Temp\63664023b7d97149d0fc324513987feac3fe98de9796d1702f44ae2c68f6b29e.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks computer location settings
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4216
    • C:\ProgramData\Unicodek\Unius.exe
      C:\ProgramData\Unicodek\Unius.exe
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Identifies Wine through registry keys
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      PID:4888
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\ProgramData\ipras.vbs"
      2⤵
      • Blocklisted process makes network request
      PID:4536

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        Unius.exe

        • Path C:\ProgramData\Unicodek\Unius.exe
        • Size 2.2MB
        • SHA256 086c2f117c8c5f7cd9b1b4b6917b311f95d33492fdbc2f1b9fab1900dd093f84
        • MD5 SHA1 SHA512 SSDEEP

        Unius.exe

        • Path C:\ProgramData\Unicodek\Unius.exe
        • Size 2.2MB
        • SHA256 086c2f117c8c5f7cd9b1b4b6917b311f95d33492fdbc2f1b9fab1900dd093f84
        • MD5 SHA1 SHA512 SSDEEP

        ipras.vbs

        • Path C:\ProgramData\ipras.vbs
        • Size 126B
        • SHA256 184ca5b2737175e0828f3546d483778c95e23720f1375deac0090c2fe415e208
        • MD5 SHA1 SHA512

        103621DE9CD5414CC2538780B4B75751

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751
        • Size 717B
        • SHA256 e634c2d1ed20e0638c95597adf4c9d392ebab932d3353f18af1e4421f4bb9cab
        • MD5 SHA1 SHA512

        103621DE9CD5414CC2538780B4B75751

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751
        • Size 192B
        • SHA256 4e65c06905fc6381da6738b4a00f18704f03b07ba295af7dcc3f0f2e72fd4fb9
        • MD5 SHA1 SHA512

        memory/4216-144-0x0000000000400000-0x0000000000B71000-memory.dmp

        memory/4216-134-0x0000000076FD0000-0x0000000077173000-memory.dmp

        memory/4216-135-0x0000000000400000-0x0000000000B71000-memory.dmp

        memory/4216-140-0x0000000076FD0000-0x0000000077173000-memory.dmp

        memory/4216-133-0x0000000000400000-0x0000000000B71000-memory.dmp

        memory/4216-143-0x0000000000400000-0x0000000000B71000-memory.dmp

        memory/4888-142-0x00000000009B0000-0x0000000000EFE000-memory.dmp

        memory/4888-141-0x0000000076FD0000-0x0000000077173000-memory.dmp

        memory/4888-139-0x00000000009B0000-0x0000000000EFE000-memory.dmp

        memory/4888-149-0x00000000009B0000-0x0000000000EFE000-memory.dmp

        memory/4888-150-0x0000000076FD0000-0x0000000077173000-memory.dmp

        memory/4888-151-0x00000000009B0000-0x0000000000EFE000-memory.dmp