Overview

overview

8

Static

static

3

d4798dc460...27.exe

windows7-x64

8

d4798dc460...27.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    24-05-2024 15:32

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General

  • Target

    d4798dc4602e154fec8aa0de70258e21d50508bce92d6984da9cac8efbdb2527.exe

  • Size

    405KB

  • MD5

    bbf28709828d7d3212d88b3ad2d8eaa8

  • SHA1

    fd63fd2dc5d31fae8d1237d8119045b556735d11

  • SHA256

    d4798dc4602e154fec8aa0de70258e21d50508bce92d6984da9cac8efbdb2527

  • SHA512

    7c92811f465bfcb8553d6b72d613ee9c86bd67bf2576d24664a08fd8eb458aae5df15217fbaf4b49def3960e2a16b260700c3800cfdc289dd2e8b82eadf3b83b

  • SSDEEP

    6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4:gtRfJcNYFNm8UhlZGse

Score
8/10
bootkitpersistencespywarestealer

Malware Config

Signatures

  • Blocklisted process makes network request 10 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • 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.

    bootkitpersistence
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d4798dc4602e154fec8aa0de70258e21d50508bce92d6984da9cac8efbdb2527.exe
    "C:\Users\Admin\AppData\Local\Temp\d4798dc4602e154fec8aa0de70258e21d50508bce92d6984da9cac8efbdb2527.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1700
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\nfhum.exe "C:\Users\Admin\AppData\Local\Temp\d4798dc4602e154fec8aa0de70258e21d50508bce92d6984da9cac8efbdb2527.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2056
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:1728
      • C:\Users\Admin\AppData\Local\Temp\nfhum.exe
        C:\Users\Admin\AppData\Local\Temp\\nfhum.exe "C:\Users\Admin\AppData\Local\Temp\d4798dc4602e154fec8aa0de70258e21d50508bce92d6984da9cac8efbdb2527.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2704
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\bajyy\asamj.dll",Verify C:\Users\Admin\AppData\Local\Temp\nfhum.exe
          4⤵
          • Blocklisted process makes network request
          • Loads dropped DLL
          • Adds Run key to start application
          • Enumerates connected drives
          • Writes to the Master Boot Record (MBR)
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2664

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \??\c:\Program Files\bajyy\asamj.dll
    Filesize

    228KB

    MD5

    608816e6782f136e15540e4814cfef81

    SHA1

    bafdc4a712a3a51cf92de22e98d2b80b88d08c94

    SHA256

    844112ef28808d459e87b0df3c17ab1dac694d124483b93dcc1d17c6cce9dcfc

    SHA512

    c71a525ff0bc9db7011a2a47ded1c2b56e918572550c5691104e5b2bc67b5bfa8d106c96e71ca970591bb706191d6fa31c47fb7d068edca5fa5d6c23c93a9b37

    Download Submit
  • \Users\Admin\AppData\Local\Temp\nfhum.exe
    Filesize

    405KB

    MD5

    f4448334cb1b88cc12007ca8876ec748

    SHA1

    9578f9564b59d24f92c84670ebd19dac3aa9a54a

    SHA256

    1a03f8726b0ec220bd327229167b2732db9c9808b95e587531b65a8fd9a71121

    SHA512

    52ca3d232a9df8a6bf90fc991d0e1dbdf2af13210ded51f03eb5667f5b71e794453865f9f07c19fe269f29dc4bfd2b6f906ee4b0b327466984dded97942e98b7

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  • memory/1700-0-0x0000000000400000-0x0000000000464000-memory.dmp
    Filesize

    400KB

    Download
  • memory/1700-2-0x0000000000400000-0x0000000000464000-memory.dmp
    Filesize

    400KB

    Download
  • memory/2056-7-0x0000000000170000-0x00000000001D4000-memory.dmp
    Filesize

    400KB

    Download
  • memory/2664-16-0x0000000010000000-0x0000000010080000-memory.dmp
    Filesize

    512KB

    Download
  • memory/2664-17-0x0000000010000000-0x0000000010080000-memory.dmp
    Filesize

    512KB

    Download
  • memory/2664-19-0x0000000010000000-0x0000000010080000-memory.dmp
    Filesize

    512KB

    Download
  • memory/2704-8-0x0000000000400000-0x0000000000464000-memory.dmp
    Filesize

    400KB

    Download
  • memory/2704-10-0x0000000000400000-0x0000000000464000-memory.dmp
    Filesize

    400KB

    Download