Analysis

  • max time kernel
    143s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-12-2023 11:06

General

  • Target

    10105f47c2c84bbab82c497fecadf044.exe

  • Size

    43KB

  • MD5

    10105f47c2c84bbab82c497fecadf044

  • SHA1

    8cb7d942810c2ac49d68903c569fcefafe5f03fd

  • SHA256

    b7fd281985acb6c4c26ffe8b9c02c3cd7daf99ec4b4e8c853c4ca9f801b7ccec

  • SHA512

    f805a2ddf98a26e17bf1eb4ac24f8c53e94d9a2f7dee0886aec7c4d1d107e1aa84a83c5b15dbf3f1c3e6f7156bb5a8204e08b49c9e01adc64458e632fe398bde

  • SSDEEP

    768:eyX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIo+34cA4ICumHJDUYUyYU+:egKcR4mjD9r82Zu4xWY3p+

Malware Config

Signatures

  • Executes dropped EXE 2 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
  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\10105f47c2c84bbab82c497fecadf044.exe
    "C:\Users\Admin\AppData\Local\Temp\10105f47c2c84bbab82c497fecadf044.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3328
    • C:\Users\Admin\AppData\Local\Temp\c2rxo6IJZoKTp0T.exe
      C:\Users\Admin\AppData\Local\Temp\c2rxo6IJZoKTp0T.exe
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:4596
    • 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:3340

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

    Filesize

    351KB

    MD5

    577c5c8542b9578b57cce6485436e118

    SHA1

    5e3a0a8aefaac3b7f3fdf25a998d437643b75b3f

    SHA256

    b57ba7e756b2d279b03f45d352624bcf723ae9e4008a7a7a30cbd01f580de112

    SHA512

    24623b64381d8d7340bf9a244b6a2b4b8d5b3b375cf7829725e6e8d1e26bb93e5c916aaa8bea0bd86bae46ce75c1c96e33d06bda83509b350f9c2dde2fa8e7a8

  • C:\Users\Admin\AppData\Local\Temp\c2rxo6IJZoKTp0T.exe

    Filesize

    15KB

    MD5

    92f9de5aaf4021b73961e14303746f95

    SHA1

    331b792e347ebaf6b6b4c9ac65d742061e1a9f0a

    SHA256

    13c921999e5ff273007a610a8521bbc77d884b41d9cbbd41e045b3497909659c

    SHA512

    314749d46a3584213e55c7030e087e06f1e5bc5fbb8f99210a4e3014b9f44f3be7e791f48c570dd0abaf73584322ebb6be0d2ea5dbbfe343245cced22b172225

  • C:\Windows\CTS.exe

    Filesize

    28KB

    MD5

    e6150447c894ade7b2b9ee88d5933922

    SHA1

    dc62f7f9ff1a492adadbc8b6321c0b7b9cd973d1

    SHA256

    b612d46644d0e4a3829c4d6715f71d979103aa487624805363b36f5b4f92b118

    SHA512

    d6db2b459723005662a646357bd60ab6e5cf77ab4f83868c91e725e45c32b44900c32724883df6aa4a0e85cbf7441bea159334f3080cfe8e7acec540aa996ff0

  • memory/3328-0-0x0000000000920000-0x0000000000937000-memory.dmp

    Filesize

    92KB

  • memory/3328-7-0x0000000000920000-0x0000000000937000-memory.dmp

    Filesize

    92KB

  • memory/3340-9-0x0000000000BC0000-0x0000000000BD7000-memory.dmp

    Filesize

    92KB

  • memory/4596-22-0x00000000750D0000-0x0000000075681000-memory.dmp

    Filesize

    5.7MB

  • memory/4596-24-0x00000000750D0000-0x0000000075681000-memory.dmp

    Filesize

    5.7MB

  • memory/4596-25-0x0000000001300000-0x0000000001310000-memory.dmp

    Filesize

    64KB

  • memory/4596-44-0x00000000750D0000-0x0000000075681000-memory.dmp

    Filesize

    5.7MB