Analysis

  • max time kernel
    142s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    05-03-2024 14:26

General

  • Target

    b4eca0c093be55ecd3e7ad17b5130e46.exe

  • Size

    2.9MB

  • MD5

    b4eca0c093be55ecd3e7ad17b5130e46

  • SHA1

    27601722e5dfc4523842b6f3998f0d82a584b7dc

  • SHA256

    eeb187cdea92ed939a396ee999acfd756a09663dd8a7f444cdbf72d06b660815

  • SHA512

    2c1db64502b86c547541024390357dd526d09b37d90e4adbf00ddf547516549fb10eda64165f3f1c3aa849bca48a6afad1081ce4654e5ab064124751e0289146

  • SSDEEP

    49152:h9jl72TC3sg0nn5Mvx+noHXYUgbWyhmEvOKpwVQW3NgLQ29p2t3u20FlvSou0izh:h1l7b3sg0nn5Mp+noHlyhJGKKUMM20js

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Loads dropped DLL 1 IoCs
  • Obfuscated with Agile.Net obfuscator 2 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • Themida packer 2 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Program crash 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b4eca0c093be55ecd3e7ad17b5130e46.exe
    "C:\Users\Admin\AppData\Local\Temp\b4eca0c093be55ecd3e7ad17b5130e46.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2812
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2812 -s 660
      2⤵
      • Program crash
      PID:3064

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\13f36763-6f3c-4d36-b875-4871599d9a06\AgileDotNetRT.dll

    Filesize

    140KB

    MD5

    edd74be9723cdc6a5692954f0e51c9f3

    SHA1

    e9fb66ceee1ba4ce7e5b8271b3e1ed7cb9acf686

    SHA256

    55ff1e0a4e5866d565ceeb9baafac73fdcb4464160fc6c78104d935009935cd7

    SHA512

    80abecdd07f364283f216d8f4d90a4da3efd4561900631fce05c2916afeb1b5bbce23ae92d57430b7b2b06c172b2ad701b2ab75b6dfd2a861abcf7edc38462f3

  • memory/2812-19-0x0000000074280000-0x000000007496E000-memory.dmp

    Filesize

    6.9MB

  • memory/2812-40-0x0000000074D70000-0x0000000074E80000-memory.dmp

    Filesize

    1.1MB

  • memory/2812-4-0x0000000074D70000-0x0000000074E80000-memory.dmp

    Filesize

    1.1MB

  • memory/2812-5-0x0000000074D70000-0x0000000074E80000-memory.dmp

    Filesize

    1.1MB

  • memory/2812-9-0x0000000074D70000-0x0000000074E80000-memory.dmp

    Filesize

    1.1MB

  • memory/2812-14-0x0000000074D70000-0x0000000074E80000-memory.dmp

    Filesize

    1.1MB

  • memory/2812-2-0x0000000074E80000-0x0000000074EC7000-memory.dmp

    Filesize

    284KB

  • memory/2812-18-0x0000000077270000-0x0000000077272000-memory.dmp

    Filesize

    8KB

  • memory/2812-17-0x0000000074D70000-0x0000000074E80000-memory.dmp

    Filesize

    1.1MB

  • memory/2812-15-0x0000000074E80000-0x0000000074EC7000-memory.dmp

    Filesize

    284KB

  • memory/2812-13-0x0000000074D70000-0x0000000074E80000-memory.dmp

    Filesize

    1.1MB

  • memory/2812-11-0x0000000074D70000-0x0000000074E80000-memory.dmp

    Filesize

    1.1MB

  • memory/2812-6-0x0000000074D70000-0x0000000074E80000-memory.dmp

    Filesize

    1.1MB

  • memory/2812-20-0x0000000000CC0000-0x0000000001452000-memory.dmp

    Filesize

    7.6MB

  • memory/2812-43-0x0000000000520000-0x0000000000560000-memory.dmp

    Filesize

    256KB

  • memory/2812-3-0x0000000074D70000-0x0000000074E80000-memory.dmp

    Filesize

    1.1MB

  • memory/2812-16-0x0000000074D70000-0x0000000074E80000-memory.dmp

    Filesize

    1.1MB

  • memory/2812-22-0x0000000000520000-0x0000000000560000-memory.dmp

    Filesize

    256KB

  • memory/2812-1-0x0000000074D70000-0x0000000074E80000-memory.dmp

    Filesize

    1.1MB

  • memory/2812-29-0x0000000074100000-0x0000000074180000-memory.dmp

    Filesize

    512KB

  • memory/2812-30-0x0000000073F00000-0x0000000073F28000-memory.dmp

    Filesize

    160KB

  • memory/2812-32-0x0000000000CC0000-0x0000000001452000-memory.dmp

    Filesize

    7.6MB

  • memory/2812-33-0x0000000074E80000-0x0000000074EC7000-memory.dmp

    Filesize

    284KB

  • memory/2812-34-0x0000000074D70000-0x0000000074E80000-memory.dmp

    Filesize

    1.1MB

  • memory/2812-35-0x0000000074D70000-0x0000000074E80000-memory.dmp

    Filesize

    1.1MB

  • memory/2812-36-0x0000000074D70000-0x0000000074E80000-memory.dmp

    Filesize

    1.1MB

  • memory/2812-37-0x0000000074D70000-0x0000000074E80000-memory.dmp

    Filesize

    1.1MB

  • memory/2812-38-0x0000000074D70000-0x0000000074E80000-memory.dmp

    Filesize

    1.1MB

  • memory/2812-39-0x0000000074D70000-0x0000000074E80000-memory.dmp

    Filesize

    1.1MB

  • memory/2812-0-0x0000000000CC0000-0x0000000001452000-memory.dmp

    Filesize

    7.6MB

  • memory/2812-42-0x0000000074280000-0x000000007496E000-memory.dmp

    Filesize

    6.9MB

  • memory/2812-21-0x0000000000CC0000-0x0000000001452000-memory.dmp

    Filesize

    7.6MB