Analysis

  • max time kernel
    141s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    03-02-2024 20:29

General

  • Target

    8d45ff8827d256dda0276dd6731ee8ed.exe

  • Size

    85KB

  • MD5

    8d45ff8827d256dda0276dd6731ee8ed

  • SHA1

    c4d51064934495f7830b98c80b51c5af11111ef8

  • SHA256

    ad678c10180b6341959060a8d176c07011786a4faf4d36a7e87471f1224881dc

  • SHA512

    19139020360693d316deb31add14bab11c6211634a9dc9e223c7eaa8b4490820a68443e640a517ed26e5518c06495329faee06c285c20539c22d7099a629ef96

  • SSDEEP

    1536:SKcR4mjD9r823FWfhrolmxIFqQAl3G4KbZA0axyZzJWx1BdCRczVtV:SKcWmjRrz3WhclyIOZKbZJzQdmCh

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.

  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8d45ff8827d256dda0276dd6731ee8ed.exe
    "C:\Users\Admin\AppData\Local\Temp\8d45ff8827d256dda0276dd6731ee8ed.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:2656
    • C:\Users\Admin\AppData\Local\Temp\tuv7ePne53ZZsLl.exe
      C:\Users\Admin\AppData\Local\Temp\tuv7ePne53ZZsLl.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2552
      • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
        dw20.exe -x -s 372
        3⤵
        • Suspicious behavior: GetForegroundWindowSpam
        PID:2572
    • 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:2092

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\CTS.exe

    Filesize

    29KB

    MD5

    70aa23c9229741a9b52e5ce388a883ac

    SHA1

    b42683e21e13de3f71db26635954d992ebe7119e

    SHA256

    9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

    SHA512

    be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

  • \Users\Admin\AppData\Local\Temp\tuv7ePne53ZZsLl.exe

    Filesize

    56KB

    MD5

    e115521ba14b75f53dcdff087ec6898f

    SHA1

    87103a892bb514a93d485fba221bacb9da3aae25

    SHA256

    59b284d0ad4c2634938e70fae67d9048bd98422d052fbd745a9b80b5fae7ae29

    SHA512

    ab3d097bcf11bf7327a28124052b210f5fb13b9bfb9b7376cae1ba5c30182a330506935288a7fe06b7e3fdd82b57f5c31638f1c301738342819c772b346fa35a

  • memory/2092-14-0x00000000000A0000-0x00000000000B7000-memory.dmp

    Filesize

    92KB

  • memory/2552-17-0x000007FEF57D0000-0x000007FEF616D000-memory.dmp

    Filesize

    9.6MB

  • memory/2552-18-0x0000000000B10000-0x0000000000B90000-memory.dmp

    Filesize

    512KB

  • memory/2552-21-0x000007FEF57D0000-0x000007FEF616D000-memory.dmp

    Filesize

    9.6MB

  • memory/2552-23-0x0000000000B10000-0x0000000000B90000-memory.dmp

    Filesize

    512KB

  • memory/2572-19-0x0000000000270000-0x0000000000271000-memory.dmp

    Filesize

    4KB

  • memory/2656-0-0x00000000010E0000-0x00000000010F7000-memory.dmp

    Filesize

    92KB

  • memory/2656-11-0x00000000010E0000-0x00000000010F7000-memory.dmp

    Filesize

    92KB

  • memory/2656-7-0x0000000000070000-0x0000000000087000-memory.dmp

    Filesize

    92KB