Resubmissions

27-11-2024 13:27

241127-qqdkmsvnhz 10

27-11-2024 09:28

241127-lfrx3atrgr 10

Analysis

  • max time kernel
    148s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    27-11-2024 09:28

General

  • Target

    4f7713dcf8ad6717ea6eb432774a29317649a512445221dc0a29ed79e48b7663.exe

  • Size

    5.7MB

  • MD5

    ef8e29925a165755db235f31092eb5e6

  • SHA1

    3bae3a4c18c7d8baf0fca9b0a5e58b7785f33123

  • SHA256

    4f7713dcf8ad6717ea6eb432774a29317649a512445221dc0a29ed79e48b7663

  • SHA512

    5ae5e1fa3bc54431dad5cfb16ea14ac7ac203265197af9ad181d0362dee248cd2e9de18da71a5712e97522c2eb3fa5c24629ebd418b2aadcc32c694237bc2200

  • SSDEEP

    98304:yVWEpMFhfhIp8WIs6d0xCNj3DeoWhoWEEN2F5qh27OkgnQxdT6/dsjNUoWUP9O:zB1IdIs6dNN2oIoWEn/qhNk0H/dsaI9

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 17 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4f7713dcf8ad6717ea6eb432774a29317649a512445221dc0a29ed79e48b7663.exe
    "C:\Users\Admin\AppData\Local\Temp\4f7713dcf8ad6717ea6eb432774a29317649a512445221dc0a29ed79e48b7663.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1032
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 5 /TN "Shell Infrastructure Host" /TR "C:\Users\Admin\AppData\Roaming\WinRAR\sihost.exe" /F
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2932
    • C:\Users\Admin\AppData\Roaming\WinRAR\sihost.exe
      t C:\Users\Admin\AppData\Local\Temp\4f7713dcf8ad6717ea6eb432774a29317649a512445221dc0a29ed79e48b7663.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:596
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 5 /TN "Shell Infrastructure Host" /TR "C:\Users\Admin\AppData\Roaming\WinRAR\sihost.exe" /F
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2220

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Roaming\WinRAR\sihost.exe

    Filesize

    5.7MB

    MD5

    ef8e29925a165755db235f31092eb5e6

    SHA1

    3bae3a4c18c7d8baf0fca9b0a5e58b7785f33123

    SHA256

    4f7713dcf8ad6717ea6eb432774a29317649a512445221dc0a29ed79e48b7663

    SHA512

    5ae5e1fa3bc54431dad5cfb16ea14ac7ac203265197af9ad181d0362dee248cd2e9de18da71a5712e97522c2eb3fa5c24629ebd418b2aadcc32c694237bc2200

  • memory/596-35-0x0000000000BD0000-0x0000000002567000-memory.dmp

    Filesize

    25.6MB

  • memory/596-43-0x0000000000BD0000-0x0000000002567000-memory.dmp

    Filesize

    25.6MB

  • memory/596-34-0x0000000000BD0000-0x0000000002567000-memory.dmp

    Filesize

    25.6MB

  • memory/596-44-0x0000000000BD0000-0x0000000002567000-memory.dmp

    Filesize

    25.6MB

  • memory/596-30-0x0000000000BD0000-0x0000000002567000-memory.dmp

    Filesize

    25.6MB

  • memory/596-31-0x0000000000BD0000-0x0000000002567000-memory.dmp

    Filesize

    25.6MB

  • memory/596-32-0x0000000000BD0000-0x0000000002567000-memory.dmp

    Filesize

    25.6MB

  • memory/596-36-0x0000000000BD0000-0x0000000002567000-memory.dmp

    Filesize

    25.6MB

  • memory/596-45-0x0000000000BD0000-0x0000000002567000-memory.dmp

    Filesize

    25.6MB

  • memory/596-42-0x0000000000BD0000-0x0000000002567000-memory.dmp

    Filesize

    25.6MB

  • memory/596-33-0x0000000000BD0000-0x0000000002567000-memory.dmp

    Filesize

    25.6MB

  • memory/596-37-0x0000000000BD0000-0x0000000002567000-memory.dmp

    Filesize

    25.6MB

  • memory/596-38-0x0000000000BD0000-0x0000000002567000-memory.dmp

    Filesize

    25.6MB

  • memory/596-39-0x0000000000BD0000-0x0000000002567000-memory.dmp

    Filesize

    25.6MB

  • memory/596-40-0x0000000000BD0000-0x0000000002567000-memory.dmp

    Filesize

    25.6MB

  • memory/596-41-0x0000000000BD0000-0x0000000002567000-memory.dmp

    Filesize

    25.6MB

  • memory/1032-1-0x00000000009D0000-0x0000000002367000-memory.dmp

    Filesize

    25.6MB

  • memory/1032-0-0x00000000009D0000-0x0000000002367000-memory.dmp

    Filesize

    25.6MB

  • memory/1032-27-0x00000000009D0000-0x0000000002367000-memory.dmp

    Filesize

    25.6MB

  • memory/1032-28-0x0000000007710000-0x00000000090A7000-memory.dmp

    Filesize

    25.6MB