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Analysis

  • max time kernel
    159s
  • max time network
    166s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/12/2023, 20:13

General

  • Target

    02b49f4361ee7b1b93e2ef3a3163903a.exe

  • Size

    44KB

  • MD5

    02b49f4361ee7b1b93e2ef3a3163903a

  • SHA1

    a4b7b9b67376459a0386781b54f726f57a2ce2c5

  • SHA256

    588e427cd92fc38062e9c1becf48fc59ad87446e2d7969a3fe9706c5db15402f

  • SHA512

    4126bb1fba7e471b3ef0e296d1f3a9fc0b29f0c18b76638fe1e9fadd4d9bc7c05720a5965c2a7b11330259ae75c629a2c61ba9c57d9430c68b57101f201c2d78

  • SSDEEP

    768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEF8nCMDhp5Q7vA5Bu68xs:SKcR4mjD9r823Fm9/5YvA5Bu3v0

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 7 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 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\02b49f4361ee7b1b93e2ef3a3163903a.exe
    "C:\Users\Admin\AppData\Local\Temp\02b49f4361ee7b1b93e2ef3a3163903a.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1676
    • C:\Users\Admin\AppData\Local\Temp\nGjt7rgTNzL9QB3.exe
      C:\Users\Admin\AppData\Local\Temp\nGjt7rgTNzL9QB3.exe
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2424
    • 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:2772

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

    352KB

    MD5

    ce0208bedd48d1176c2b505ba0e86788

    SHA1

    574c00fd4567011db93bc20bd22de30205e0137f

    SHA256

    fef340d6f94e1d712ca8daa06348206d452b0a6be96fcc5ba7e5f027359e41f2

    SHA512

    b9a3c193fa4183ad83fdde8646f16a87b37b0b6bc1e570d7c58d778031861737c2eea585ce97c1ee6d29491f59187581e8bf5ef9706347d7fa880377b60aa35c

  • C:\Users\Admin\AppData\Local\Temp\nGjt7rgTNzL9QB3.exe

    Filesize

    15KB

    MD5

    92f9de5aaf4021b73961e14303746f95

    SHA1

    331b792e347ebaf6b6b4c9ac65d742061e1a9f0a

    SHA256

    13c921999e5ff273007a610a8521bbc77d884b41d9cbbd41e045b3497909659c

    SHA512

    314749d46a3584213e55c7030e087e06f1e5bc5fbb8f99210a4e3014b9f44f3be7e791f48c570dd0abaf73584322ebb6be0d2ea5dbbfe343245cced22b172225

  • C:\Windows\CTS.exe

    Filesize

    29KB

    MD5

    70aa23c9229741a9b52e5ce388a883ac

    SHA1

    b42683e21e13de3f71db26635954d992ebe7119e

    SHA256

    9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

    SHA512

    be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

  • memory/1676-0-0x00000000007D0000-0x00000000007E7000-memory.dmp

    Filesize

    92KB

  • memory/1676-8-0x00000000007D0000-0x00000000007E7000-memory.dmp

    Filesize

    92KB

  • memory/1676-1-0x00000000007D0000-0x00000000007E7000-memory.dmp

    Filesize

    92KB

  • memory/2424-31-0x0000000074C90000-0x0000000075241000-memory.dmp

    Filesize

    5.7MB

  • memory/2424-32-0x0000000001470000-0x0000000001480000-memory.dmp

    Filesize

    64KB

  • memory/2424-33-0x0000000074C90000-0x0000000075241000-memory.dmp

    Filesize

    5.7MB

  • memory/2424-40-0x0000000074C90000-0x0000000075241000-memory.dmp

    Filesize

    5.7MB

  • memory/2424-42-0x0000000001470000-0x0000000001480000-memory.dmp

    Filesize

    64KB

  • memory/2424-59-0x0000000074C90000-0x0000000075241000-memory.dmp

    Filesize

    5.7MB

  • memory/2772-10-0x00000000002F0000-0x0000000000307000-memory.dmp

    Filesize

    92KB

  • memory/2772-24-0x00000000002F0000-0x0000000000307000-memory.dmp

    Filesize

    92KB