Resubmissions

17-01-2021 19:18

210117-5hwxlye88x 10

17-01-2021 17:05

210117-6jkt8jz44e 10

17-01-2021 10:25

210117-ncy8vksfgn 10

Analysis

  • max time kernel
    139s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    17-01-2021 10:25

General

  • Target

    36fc7610e543a7bc9bee637ddb0c03263dd1b6964774cfbced9f649a01def36f.exe

  • Size

    1.9MB

  • MD5

    2fccc27c521a5637b2a566151700eb24

  • SHA1

    d6739cf160f5820d07d3b097007ccd53fae07673

  • SHA256

    36fc7610e543a7bc9bee637ddb0c03263dd1b6964774cfbced9f649a01def36f

  • SHA512

    2dc36d10e9b8ccd8f4fb791eb0fdba27d0be34853a637a80918237de9b4b22740a203cab380247b86e42cb59799cc77fbd8dc151170f9af10934a9d55037958b

Score
9/10

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Identifies Wine through registry keys 2 TTPs 1 IoCs

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

  • 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 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 3 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\36fc7610e543a7bc9bee637ddb0c03263dd1b6964774cfbced9f649a01def36f.exe
    "C:\Users\Admin\AppData\Local\Temp\36fc7610e543a7bc9bee637ddb0c03263dd1b6964774cfbced9f649a01def36f.exe"
    1⤵
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1596
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\ucvhduay.exe"
      2⤵
      • Suspicious behavior: GetForegroundWindowSpam
      PID:1080
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\dmktgfavjv.exe"
      2⤵
      • Suspicious behavior: GetForegroundWindowSpam
      PID:864
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\mlxcbxwekjpc.exe"
      2⤵
      • Suspicious behavior: GetForegroundWindowSpam
      PID:1892

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1572-4-0x000007FEF7540000-0x000007FEF77BA000-memory.dmp

    Filesize

    2.5MB

  • memory/1596-3-0x0000000004EF0000-0x0000000004F01000-memory.dmp

    Filesize

    68KB

  • memory/1596-2-0x0000000004AE0000-0x0000000004AF1000-memory.dmp

    Filesize

    68KB