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Analysis

  • max time kernel
    85s
  • max time network
    82s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    20/02/2024, 14:37

General

  • Target

    VirusSign.2024.02.08/0366d8bc8e9bd5e64e301190356e79ff.exe

  • Size

    166KB

  • MD5

    0366d8bc8e9bd5e64e301190356e79ff

  • SHA1

    9adedc7fc2ebda1f218ef124d7e90f0594d3ca54

  • SHA256

    b2244a1c65a5f4ce4cea6a9c9c85f7ef9dd7a9e8f4b32f62322994ffbbaaa456

  • SHA512

    a5eb7565a4b19faa08d6c1c162310f633625bd93aca8083f69daac4c1ef207b3871c87597e18f1b4e2b35f7a14b187c38fc49b766975aa829c290e2df15833bc

  • SSDEEP

    3072:ZhpAyazIlyazTUQT2y70GtgYn47tviPIVIk15lHxUv0NFxrC:hZMazDj7ltB474PIV715lHx+MDC

Malware Config

Signatures

  • Executes dropped EXE 2 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.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\VirusSign.2024.02.08\0366d8bc8e9bd5e64e301190356e79ff.exe
    "C:\Users\Admin\AppData\Local\Temp\VirusSign.2024.02.08\0366d8bc8e9bd5e64e301190356e79ff.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2904
    • C:\Users\Admin\AppData\Local\Temp\dpTGx3AvdjE1nVn.exe
      C:\Users\Admin\AppData\Local\Temp\dpTGx3AvdjE1nVn.exe
      2⤵
      • Executes dropped EXE
      PID:2916
    • C:\Windows\CTS.exe
      "C:\Windows\CTS.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:288

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\CTS.exe

    Filesize

    71KB

    MD5

    66df4ffab62e674af2e75b163563fc0b

    SHA1

    dec8a197312e41eeb3cfef01cb2a443f0205cd6e

    SHA256

    075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

    SHA512

    1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

  • \Users\Admin\AppData\Local\Temp\dpTGx3AvdjE1nVn.exe

    Filesize

    95KB

    MD5

    07894acc08732f8b6adade78d3038376

    SHA1

    c6f8034e2e8183d35d3f2b035405294ee01fa273

    SHA256

    6b4195e640a85ac32eb6f9628822a622057df1e459df7c17a12f97aeabc9415b

    SHA512

    3064c16fa08afc16c467b2923367a0e893e63b65a8b1877899c728ca2862cdf656b24573fffa706563551322a25d2a4b30e62a21e26e6fe4795a016fff9151c1