Overview

overview

8

Static

static

3

8815386590...42.exe

windows7-x64

8

8815386590...42.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    152s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-04-2024 01:52

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General

  • Target

    88153865900a1ac4d3c37a7a330b0b501bafc3edb68d534b89fab7a436b8d442.exe

  • Size

    404KB

  • MD5

    0c09634a39a624868eb8367b703f5840

  • SHA1

    c1bc271c4d368d67aaab452e44c6d994a95b13ff

  • SHA256

    88153865900a1ac4d3c37a7a330b0b501bafc3edb68d534b89fab7a436b8d442

  • SHA512

    6f7745bda4c3d65a313fefb6fee1992e2d6822bc37d029d98ea2dd769673587942cedd45d82f750b701c7c2e9cdb5593a0b10b7f8b2e95ceba0f654ea5bfc5a9

  • SSDEEP

    6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4:gtRfJcNYFNm8UhlZGse

Score
8/10
bootkitpersistencespywarestealer

Malware Config

Signatures

  • Blocklisted process makes network request 8 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 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 2 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 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\88153865900a1ac4d3c37a7a330b0b501bafc3edb68d534b89fab7a436b8d442.exe
    "C:\Users\Admin\AppData\Local\Temp\88153865900a1ac4d3c37a7a330b0b501bafc3edb68d534b89fab7a436b8d442.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1380
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ysfln.exe "C:\Users\Admin\AppData\Local\Temp\88153865900a1ac4d3c37a7a330b0b501bafc3edb68d534b89fab7a436b8d442.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1548
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:2916
      • C:\Users\Admin\AppData\Local\Temp\ysfln.exe
        C:\Users\Admin\AppData\Local\Temp\\ysfln.exe "C:\Users\Admin\AppData\Local\Temp\88153865900a1ac4d3c37a7a330b0b501bafc3edb68d534b89fab7a436b8d442.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4800
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\xkyyn\txqgl.dll",Verify C:\Users\Admin\AppData\Local\Temp\ysfln.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:1132
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3644 --field-trial-handle=2256,i,6670388345726423024,18382795228658886258,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1372

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Program Files\xkyyn\txqgl.dll
      Filesize

      228KB

      MD5

      858ed352959c5ffd9e2b82daa96ea6e3

      SHA1

      3a3f2a0517c068bae78a15cca7b37f4026626834

      SHA256

      43db2369aa03832d3a63817602d2d000fca2fcecfc302f4cc0a9b513fd9498bd

      SHA512

      68e85fb89feca0bca6c54af2861a668a266122a360048f625790c14036bce7e5e939cd9f1f6607e8d9b72aab3f004221cbbd22a8633fbd8370bc012a24acb7d9

      Download Submit

    • C:\Users\Admin\AppData\Local\Temp\ysfln.exe
      Filesize

      404KB

      MD5

      52c5a1cf2acf8adafbf30da0fede28e0

      SHA1

      d93f6f0f00241a805ecb271af3efd9e54331e8a2

      SHA256

      44669b4c70998300e7f7e2e6339cff8a70286c3899ac045b0440c0c41d69c108

      SHA512

      f26850302fd320a9682004d2eced82f9a78fd4df5613a9543af5897d803fda8c820aca1ce6132fcd28fc530200068dd8e61af279dc315d731d30f00e517db28b

      Download Submit

    • memory/1132-10-0x0000000010000000-0x0000000010080000-memory.dmp

      Filesize

      512KB

      Download

    • memory/1132-11-0x0000000010000000-0x0000000010080000-memory.dmp

      Filesize

      512KB

      Download

    • memory/1132-13-0x0000000010000000-0x0000000010080000-memory.dmp

      Filesize

      512KB

      Download

    • memory/1380-0-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

      Download

    • memory/1380-2-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

      Download

    • memory/4800-7-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

      Download