Analysis

  • max time kernel
    141s
  • max time network
    149s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    17/04/2023, 13:46

General

  • Target

    6e49adb9932cd17f4b40af488ebf866d6de827dd7746ed1c47ed761c7f2ce4b6.exe

  • Size

    2.9MB

  • MD5

    85150fc161f06e745f463388cd0fff4f

  • SHA1

    38528c83c1fca3bdd07d6ed03a95deaab5e2b453

  • SHA256

    6e49adb9932cd17f4b40af488ebf866d6de827dd7746ed1c47ed761c7f2ce4b6

  • SHA512

    e505eaad59721c5f0ecce973b1a54394c164d47318ce6c6dad444f72696d8c50eb96b824377ec8ecb3c49f2e87541b70bc337e0e3bc38f03dce7c7342cf9acfe

  • SSDEEP

    49152:iTuQ/+UDDq542HWdVlV7t2ftBl2fULWXBnWXg/wOy6vb3dvwM3Qh5h:iTu4+U/2QlVmtBaJw6z3Nwj

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • GoLang User-Agent 1 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6e49adb9932cd17f4b40af488ebf866d6de827dd7746ed1c47ed761c7f2ce4b6.exe
    "C:\Users\Admin\AppData\Local\Temp\6e49adb9932cd17f4b40af488ebf866d6de827dd7746ed1c47ed761c7f2ce4b6.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of WriteProcessMemory
    PID:2932
    • C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe
      C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      PID:4128

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe

    Filesize

    731.9MB

    MD5

    d5191e726c818edeff655ccf78838241

    SHA1

    aae6043bf700b927821b28140eb36678c464d3f7

    SHA256

    d03f7d0014123df0b3ed36fd37d1aaf7f89b86db7b18de2c88651ef6509cde00

    SHA512

    ee8b046b3a76594aee11bc50394aa308054fd09c0a3beff981108edc96f34282633760a4ded0f5893e45dcd943054bed846b521aa2c95dad463e1ecb30de2243

  • C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe

    Filesize

    731.9MB

    MD5

    d5191e726c818edeff655ccf78838241

    SHA1

    aae6043bf700b927821b28140eb36678c464d3f7

    SHA256

    d03f7d0014123df0b3ed36fd37d1aaf7f89b86db7b18de2c88651ef6509cde00

    SHA512

    ee8b046b3a76594aee11bc50394aa308054fd09c0a3beff981108edc96f34282633760a4ded0f5893e45dcd943054bed846b521aa2c95dad463e1ecb30de2243

  • memory/2932-121-0x00000000008A0000-0x00000000011BC000-memory.dmp

    Filesize

    9.1MB

  • memory/2932-123-0x00000000008A0000-0x00000000011BC000-memory.dmp

    Filesize

    9.1MB

  • memory/2932-124-0x00000000008A0000-0x00000000011BC000-memory.dmp

    Filesize

    9.1MB

  • memory/2932-125-0x00000000008A0000-0x00000000011BC000-memory.dmp

    Filesize

    9.1MB

  • memory/2932-126-0x00000000008A0000-0x00000000011BC000-memory.dmp

    Filesize

    9.1MB

  • memory/2932-127-0x00000000008A0000-0x00000000011BC000-memory.dmp

    Filesize

    9.1MB

  • memory/2932-128-0x00000000008A0000-0x00000000011BC000-memory.dmp

    Filesize

    9.1MB

  • memory/2932-129-0x00000000008A0000-0x00000000011BC000-memory.dmp

    Filesize

    9.1MB

  • memory/2932-131-0x00000000008A0000-0x00000000011BC000-memory.dmp

    Filesize

    9.1MB

  • memory/2932-135-0x00000000008A0000-0x00000000011BC000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-140-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-147-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-138-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-139-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-136-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-141-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-142-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-143-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-144-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-145-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-146-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-137-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-148-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-150-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-151-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-152-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-153-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-154-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-155-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-156-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-157-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB

  • memory/4128-158-0x0000000000C70000-0x000000000158C000-memory.dmp

    Filesize

    9.1MB