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Analysis

  • max time kernel
    231s
  • max time network
    163s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    25/12/2023, 18:17

General

  • Target

    33e826176ff4e48466375ffa5c9ecf85.exe

  • Size

    85KB

  • MD5

    33e826176ff4e48466375ffa5c9ecf85

  • SHA1

    7f8e2aee8e179e8ac1967c58019951a687474951

  • SHA256

    52b1196caaf09ae059ad90da293552299c414c666df6d058f06e088db8775f6e

  • SHA512

    5a7c5e84e860d72e19b8c84285b3e9242476117cd498510965ae7a7a6def9a8aac72ec2af01d97db3fddf7622e2ea364b288ed0cd1c1a24b7c460759ba5c3450

  • SSDEEP

    1536:SKcR4mjD9r823FSBLrfbKjCX43ZsY+bpmf3Z:SKcWmjRrz3b8sZsbbpmf3Z

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 6 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\33e826176ff4e48466375ffa5c9ecf85.exe
    "C:\Users\Admin\AppData\Local\Temp\33e826176ff4e48466375ffa5c9ecf85.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:1116
    • C:\Users\Admin\AppData\Local\Temp\dMGv9lNRAG13a2X.exe
      C:\Users\Admin\AppData\Local\Temp\dMGv9lNRAG13a2X.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2944
      • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
        dw20.exe -x -s 380
        3⤵
        • Suspicious behavior: GetForegroundWindowSpam
        PID:1832
    • 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:1656

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\dMGv9lNRAG13a2X.exe

    Filesize

    56KB

    MD5

    e115521ba14b75f53dcdff087ec6898f

    SHA1

    87103a892bb514a93d485fba221bacb9da3aae25

    SHA256

    59b284d0ad4c2634938e70fae67d9048bd98422d052fbd745a9b80b5fae7ae29

    SHA512

    ab3d097bcf11bf7327a28124052b210f5fb13b9bfb9b7376cae1ba5c30182a330506935288a7fe06b7e3fdd82b57f5c31638f1c301738342819c772b346fa35a

  • memory/1116-0-0x0000000001360000-0x0000000001377000-memory.dmp

    Filesize

    92KB

  • memory/1116-2-0x0000000001360000-0x0000000001377000-memory.dmp

    Filesize

    92KB

  • memory/1116-14-0x0000000001360000-0x0000000001377000-memory.dmp

    Filesize

    92KB

  • memory/1656-18-0x0000000000040000-0x0000000000057000-memory.dmp

    Filesize

    92KB

  • memory/1832-20-0x00000000002D0000-0x00000000002D1000-memory.dmp

    Filesize

    4KB

  • memory/2944-16-0x000007FEF5C10000-0x000007FEF65AD000-memory.dmp

    Filesize

    9.6MB

  • memory/2944-17-0x0000000000B20000-0x0000000000BA0000-memory.dmp

    Filesize

    512KB

  • memory/2944-22-0x0000000000B20000-0x0000000000BA0000-memory.dmp

    Filesize

    512KB