Analysis

  • max time kernel
    146s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    12-06-2024 11:44

General

  • Target

    c074458d1518d60a2dcfa6cfa575dfd7f58cfe31934cd92b1095c4529964433b.exe

  • Size

    3.9MB

  • MD5

    fe1346c94d38693912f3c7f294b866e3

  • SHA1

    174e68efebb94aae6a463a8e7e85dbd77c3e085f

  • SHA256

    c074458d1518d60a2dcfa6cfa575dfd7f58cfe31934cd92b1095c4529964433b

  • SHA512

    bfc7c39490e9c9287701d61e6617199c181cc582f437c263fac95338231998023c715e02266e6f3afd39fea093f5ac51a37d8e3e16db220a8cf480e9f40e4ef4

  • SSDEEP

    98304:3bZ3zESbiqP06HOJv+8f5IbjcTgFWbm9yoWuz0bs/jry:1EaX84OJv+8RUjcWWbyF0bs/jr

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
  • Checks BIOS information in registry 2 TTPs 6 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 62 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c074458d1518d60a2dcfa6cfa575dfd7f58cfe31934cd92b1095c4529964433b.exe
    "C:\Users\Admin\AppData\Local\Temp\c074458d1518d60a2dcfa6cfa575dfd7f58cfe31934cd92b1095c4529964433b.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Writes to the Master Boot Record (MBR)
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2488
    • F:\yvchost.exe
      F:\yvchost.exe
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Writes to the Master Boot Record (MBR)
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:2660

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Discovery

Query Registry

2
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\mntemp
    Filesize

    16B

    MD5

    5adc4b666885a0e9b05906fd55c216c5

    SHA1

    a189b4ff16062241912f571b14d7ef5d3df7a42a

    SHA256

    a12fdcbc4446ed61726ad5c03f72312ff6cb9d27a5ed324f538d66236963d81f

    SHA512

    35435a93b2bded1692551ff97154943c5a283eec8ae125f0e4c15dd282a038ea90fe706efc6bbfa7818c4a65154314020b9604d3ad756efe405718ed40f76f64

  • F:\yvchost.exe
    Filesize

    3.9MB

    MD5

    fe1346c94d38693912f3c7f294b866e3

    SHA1

    174e68efebb94aae6a463a8e7e85dbd77c3e085f

    SHA256

    c074458d1518d60a2dcfa6cfa575dfd7f58cfe31934cd92b1095c4529964433b

    SHA512

    bfc7c39490e9c9287701d61e6617199c181cc582f437c263fac95338231998023c715e02266e6f3afd39fea093f5ac51a37d8e3e16db220a8cf480e9f40e4ef4

  • memory/2488-4-0x0000000000400000-0x0000000000E1F000-memory.dmp
    Filesize

    10.1MB

  • memory/2488-0-0x0000000000400000-0x0000000000E1F000-memory.dmp
    Filesize

    10.1MB

  • memory/2488-5-0x0000000000400000-0x0000000000E1F000-memory.dmp
    Filesize

    10.1MB

  • memory/2488-3-0x0000000000400000-0x0000000000E1F000-memory.dmp
    Filesize

    10.1MB

  • memory/2488-12-0x0000000003330000-0x0000000003D4F000-memory.dmp
    Filesize

    10.1MB

  • memory/2488-14-0x0000000003330000-0x0000000003D4F000-memory.dmp
    Filesize

    10.1MB

  • memory/2488-1-0x0000000077900000-0x0000000077902000-memory.dmp
    Filesize

    8KB

  • memory/2488-20-0x0000000000400000-0x0000000000E1F000-memory.dmp
    Filesize

    10.1MB

  • memory/2660-13-0x0000000000400000-0x0000000000E1F000-memory.dmp
    Filesize

    10.1MB

  • memory/2660-18-0x0000000000400000-0x0000000000E1F000-memory.dmp
    Filesize

    10.1MB

  • memory/2660-16-0x0000000000400000-0x0000000000E1F000-memory.dmp
    Filesize

    10.1MB

  • memory/2660-17-0x0000000000400000-0x0000000000E1F000-memory.dmp
    Filesize

    10.1MB

  • memory/2660-21-0x0000000000400000-0x0000000000E1F000-memory.dmp
    Filesize

    10.1MB