Analysis

  • max time kernel
    122s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    26-05-2024 05:43

General

  • Target

    32d57beaaac38a62cd91d3c26dd9c826374862d03fd36f21e1e3dda6486c1e86.exe

  • Size

    12.6MB

  • MD5

    15724d3cd1761298b3284825707cc455

  • SHA1

    43a9462fe8ca85c21d4bc04b337ea1c62925e88d

  • SHA256

    32d57beaaac38a62cd91d3c26dd9c826374862d03fd36f21e1e3dda6486c1e86

  • SHA512

    386f179d9d849dd7b589c02c380f1645d86b809e54d66bb8b746a9d196d7f1f6ab5462f5fb30a881fd9421493ce6d4c8f1219726ca14a874dfd8c5501dca564b

  • SSDEEP

    393216:DxNPOEhmwhy+41I3tEaQI9r49nCK0Irz32:1N2EAMr49nCKH2

Malware Config

Signatures

  • Blackmoon, KrBanker

    Blackmoon also known as KrBanker is banking trojan first discovered in early 2014.

  • Detect Blackmoon payload 4 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 3 IoCs

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

  • Loads dropped DLL 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\32d57beaaac38a62cd91d3c26dd9c826374862d03fd36f21e1e3dda6486c1e86.exe
    "C:\Users\Admin\AppData\Local\Temp\32d57beaaac38a62cd91d3c26dd9c826374862d03fd36f21e1e3dda6486c1e86.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Writes to the Master Boot Record (MBR)
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetWindowsHookEx
    PID:1368

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\ExuiKrnln_Win32_20230427.lib
    Filesize

    1.5MB

    MD5

    4e47752eed65ff435fc524f8cefe991a

    SHA1

    2752adaeb188a975c7e73d82a4ee3eafbbafd357

    SHA256

    33ee4aca04b7c0e6d339728a2a88885b2966064522442f346b704c2b4d277e0e

    SHA512

    467a5b87706494bf9fc464d1f15d265d3188771978c11130233b375ab22ef496ca1a1f572f5f6ffe80992de8295f91659bb9f199c6b0cb8eb1b206668f979cac

  • memory/1368-0-0x0000000000400000-0x0000000001A1D000-memory.dmp
    Filesize

    22.1MB

  • memory/1368-2-0x0000000077730000-0x0000000077732000-memory.dmp
    Filesize

    8KB

  • memory/1368-3-0x0000000000400000-0x0000000001A1D000-memory.dmp
    Filesize

    22.1MB

  • memory/1368-4-0x0000000000400000-0x0000000001A1D000-memory.dmp
    Filesize

    22.1MB

  • memory/1368-6-0x0000000000400000-0x0000000001A1D000-memory.dmp
    Filesize

    22.1MB

  • memory/1368-5-0x0000000000400000-0x0000000001A1D000-memory.dmp
    Filesize

    22.1MB

  • memory/1368-11-0x0000000000400000-0x0000000001A1D000-memory.dmp
    Filesize

    22.1MB