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Analysis

  • max time kernel
    151s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    30/12/2023, 14:10

General

  • Target

    simplearchive.scr

  • Size

    712KB

  • MD5

    5e63fa00340326fecc1b3c7f942ccff1

  • SHA1

    eaf739f71b25517bffc37966dd19cb256c7c93fe

  • SHA256

    21fe1a80e75c3392f448b3ad41935c5d6b55bc4366532a0a6eee46c1b4684491

  • SHA512

    1ace52b425a2a9e0d102ffc6d67469b87d640f758d35b7c999763faba6888dfec0a491786bd9e70837280542bd59cc8ccb3df4e0c64e6fcc8a77d770d489d85e

  • SSDEEP

    12288:SXmwRo+mv8QD4+0N469AoUleMoGlHNImbu7IT/4zp1nBgxmF+Jf9v189lS:SX48QE+U7AoxMowHNImbu7AAF1BgxmFO

Malware Config

Signatures

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 5 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 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\simplearchive.scr
    "C:\Users\Admin\AppData\Local\Temp\simplearchive.scr" /S
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:1044
    • C:\Program Files (x86)\-\PDF Archiver\service.exe
      "C:\Program Files (x86)\-\PDF Archiver\service.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:2644
      • C:\Program Files (x86)\-\PDF Archiver\service.exe
        "C:\Program Files (x86)\-\PDF Archiver\service.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:2556
        • C:\Users\Admin\AppData\Local\Temp\service.exe
          "C:\Users\Admin\AppData\Local\Temp\service.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:1820
          • C:\Users\Admin\AppData\Local\Temp\service.exe
            "C:\Users\Admin\AppData\Local\Temp\service.exe"
            5⤵
            • Executes dropped EXE
            • Adds Run key to start application
            • Drops file in Program Files directory
            • Drops file in Windows directory
            PID:1504

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Program Files (x86)\-\PDF Archiver\service.exe

    Filesize

    514KB

    MD5

    c99f9e727a31cffd7f0a2ca86c32e9cf

    SHA1

    3758a79b77f9c0f797d997d7561e784f853c46bf

    SHA256

    3f1498d0b647303a904c9f929b060911d15442cfde169d87cf967b6d57484d69

    SHA512

    c6fac95122d5d7fa5de271b3916e1534972d735fa308fc93db3429361f2992090b247eaab8f2ebd96b3c203bbfa51f1cb47222cd1396eb2d18ff3d8ba77286c4

  • memory/1044-23-0x0000000003190000-0x0000000003218000-memory.dmp

    Filesize

    544KB

  • memory/1044-24-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

  • memory/1504-77-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/1504-73-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/1504-66-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1820-71-0x00000000002E0000-0x0000000000368000-memory.dmp

    Filesize

    544KB

  • memory/1820-60-0x0000000000650000-0x00000000006D8000-memory.dmp

    Filesize

    544KB

  • memory/1820-55-0x00000000002E0000-0x0000000000368000-memory.dmp

    Filesize

    544KB

  • memory/2556-37-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2556-54-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2556-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2556-33-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2556-41-0x0000000000FD0000-0x0000000001058000-memory.dmp

    Filesize

    544KB

  • memory/2556-43-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2556-42-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2556-40-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2556-28-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2556-34-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2556-53-0x00000000006A0000-0x0000000000728000-memory.dmp

    Filesize

    544KB

  • memory/2556-32-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2556-31-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2556-30-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2556-29-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2644-39-0x0000000000FD0000-0x0000000001058000-memory.dmp

    Filesize

    544KB

  • memory/2644-26-0x0000000000FD0000-0x0000000001058000-memory.dmp

    Filesize

    544KB