Analysis

  • max time kernel
    120s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    13-02-2024 06:06

General

  • Target

    SAMPUninstall.exe

  • Size

    56KB

  • MD5

    bffa504cd63305418858b150faa8f408

  • SHA1

    86886fd2378aa33935cf684f056454859713aed4

  • SHA256

    d00f8bf2eaa1994b0064d7b14fc987b0aab9b3c440a4177257ee2d3217fe6d3b

  • SHA512

    6b8958a4ccffce02ba8e4390f66121a02116e2b2ef9c4baa2eea62b8acfe380d0c0dd5e773f83b7062467a34019612d3f8a531e1a4ffcefb769de964cbf02019

  • SSDEEP

    1536:HLXB65939tY6HBg4sXJOgdLeAyN/dIM6su:HLk395hYXJOceAlMM

Score
7/10

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 5 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • NSIS installer 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SAMPUninstall.exe
    "C:\Users\Admin\AppData\Local\Temp\SAMPUninstall.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1916
    • C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
      "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: GetForegroundWindowSpam
      PID:1704

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\nst55A0.tmp\ioSpecial.ini

    Filesize

    538B

    MD5

    57306d647251980383208ca3c402f51c

    SHA1

    64cc30945353c2799aa552d1fde9fca9b850573d

    SHA256

    6b46647db4af556e72c1fdac72436f80fa2c3ba5a436196178e895e4e0699df6

    SHA512

    9370e8b570b6ebe8049469b9e9daf4d7c259ce332c60ac7829053a331952815ffebc2861253e8b97ccd3e44039b923a9c15987e9c1d095f1d495d57c351f4966

  • C:\Users\Admin\AppData\Local\Temp\nst55A0.tmp\ioSpecial.ini

    Filesize

    577B

    MD5

    76a886991debf28edb13216826b66823

    SHA1

    0a88f0db2289ec48d1cf7a6fa33c5a72e649b108

    SHA256

    2fac33f63d2752658f10c079b073d0dea774deee25125fbaf9f4b423780dc130

    SHA512

    af36dc4d91ec7f58552fe1e4fc25a37b56c113d0c7cd09dab7e041e46b00575385a1ccca91c16f2880c5167e448402bbcb3cda8838a4322c0e4bd13d0f8167b4

  • \Users\Admin\AppData\Local\Temp\nst55A0.tmp\InstallOptions.dll

    Filesize

    14KB

    MD5

    325b008aec81e5aaa57096f05d4212b5

    SHA1

    27a2d89747a20305b6518438eff5b9f57f7df5c3

    SHA256

    c9cd5c9609e70005926ae5171726a4142ffbcccc771d307efcd195dafc1e6b4b

    SHA512

    18362b3aee529a27e85cc087627ecf6e2d21196d725f499c4a185cb3a380999f43ff1833a8ebec3f5ba1d3a113ef83185770e663854121f2d8b885790115afdf

  • \Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

    Filesize

    56KB

    MD5

    bffa504cd63305418858b150faa8f408

    SHA1

    86886fd2378aa33935cf684f056454859713aed4

    SHA256

    d00f8bf2eaa1994b0064d7b14fc987b0aab9b3c440a4177257ee2d3217fe6d3b

    SHA512

    6b8958a4ccffce02ba8e4390f66121a02116e2b2ef9c4baa2eea62b8acfe380d0c0dd5e773f83b7062467a34019612d3f8a531e1a4ffcefb769de964cbf02019

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