Analysis

  • max time kernel
    131s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    03/10/2023, 15:39

General

  • Target

    c86a960bc9e16ae974341abd369cf32f_JC.exe

  • Size

    211KB

  • MD5

    c86a960bc9e16ae974341abd369cf32f

  • SHA1

    e8a2547fa7e257297a0d337cbfe407c827ce7c9e

  • SHA256

    2ffb5eb543aaf133c10db110de4691514ce9a4799ba549d2e972d9254c88f3aa

  • SHA512

    b8255831602340314b39b69f7dd49159f6c67521908244ea37375561ac2c00dcc9d3de35a0b86bb3d9a3f989e5197c65b815011c7483cce18cf77719f0886ef1

  • SSDEEP

    3072:EPUHpiKT2t2UHIu05W7SAFJJOUD9cckiKop97f3r8n9t9Ygnt:9rTfUHeeSKOS9ccFKk3Y9t9Y

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 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 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c86a960bc9e16ae974341abd369cf32f_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\c86a960bc9e16ae974341abd369cf32f_JC.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3044
    • C:\Users\Public\Microsoft Build\Isass.exe
      "C:\Users\Public\Microsoft Build\Isass.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:2452

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Public\Microsoft Build\Isass.exe

          Filesize

          211KB

          MD5

          c86a960bc9e16ae974341abd369cf32f

          SHA1

          e8a2547fa7e257297a0d337cbfe407c827ce7c9e

          SHA256

          2ffb5eb543aaf133c10db110de4691514ce9a4799ba549d2e972d9254c88f3aa

          SHA512

          b8255831602340314b39b69f7dd49159f6c67521908244ea37375561ac2c00dcc9d3de35a0b86bb3d9a3f989e5197c65b815011c7483cce18cf77719f0886ef1

        • C:\Users\Public\Microsoft Build\Isass.exe

          Filesize

          211KB

          MD5

          c86a960bc9e16ae974341abd369cf32f

          SHA1

          e8a2547fa7e257297a0d337cbfe407c827ce7c9e

          SHA256

          2ffb5eb543aaf133c10db110de4691514ce9a4799ba549d2e972d9254c88f3aa

          SHA512

          b8255831602340314b39b69f7dd49159f6c67521908244ea37375561ac2c00dcc9d3de35a0b86bb3d9a3f989e5197c65b815011c7483cce18cf77719f0886ef1

        • C:\Users\Public\Microsoft Build\Isass.exe

          Filesize

          211KB

          MD5

          c86a960bc9e16ae974341abd369cf32f

          SHA1

          e8a2547fa7e257297a0d337cbfe407c827ce7c9e

          SHA256

          2ffb5eb543aaf133c10db110de4691514ce9a4799ba549d2e972d9254c88f3aa

          SHA512

          b8255831602340314b39b69f7dd49159f6c67521908244ea37375561ac2c00dcc9d3de35a0b86bb3d9a3f989e5197c65b815011c7483cce18cf77719f0886ef1

        • \Users\Public\Microsoft Build\Isass.exe

          Filesize

          211KB

          MD5

          c86a960bc9e16ae974341abd369cf32f

          SHA1

          e8a2547fa7e257297a0d337cbfe407c827ce7c9e

          SHA256

          2ffb5eb543aaf133c10db110de4691514ce9a4799ba549d2e972d9254c88f3aa

          SHA512

          b8255831602340314b39b69f7dd49159f6c67521908244ea37375561ac2c00dcc9d3de35a0b86bb3d9a3f989e5197c65b815011c7483cce18cf77719f0886ef1

        • \Users\Public\Microsoft Build\Isass.exe

          Filesize

          211KB

          MD5

          c86a960bc9e16ae974341abd369cf32f

          SHA1

          e8a2547fa7e257297a0d337cbfe407c827ce7c9e

          SHA256

          2ffb5eb543aaf133c10db110de4691514ce9a4799ba549d2e972d9254c88f3aa

          SHA512

          b8255831602340314b39b69f7dd49159f6c67521908244ea37375561ac2c00dcc9d3de35a0b86bb3d9a3f989e5197c65b815011c7483cce18cf77719f0886ef1

        • memory/2452-35-0x0000000000400000-0x00000000016A8000-memory.dmp

          Filesize

          18.7MB

        • memory/2452-28-0x0000000000400000-0x00000000016A8000-memory.dmp

          Filesize

          18.7MB

        • memory/2452-57-0x0000000000400000-0x00000000016A8000-memory.dmp

          Filesize

          18.7MB

        • memory/2452-56-0x0000000000400000-0x00000000016A8000-memory.dmp

          Filesize

          18.7MB

        • memory/2452-13-0x0000000000400000-0x00000000016A8000-memory.dmp

          Filesize

          18.7MB

        • memory/2452-14-0x00000000003B0000-0x00000000003B1000-memory.dmp

          Filesize

          4KB

        • memory/2452-15-0x0000000000400000-0x00000000016A8000-memory.dmp

          Filesize

          18.7MB

        • memory/2452-16-0x0000000000400000-0x00000000016A8000-memory.dmp

          Filesize

          18.7MB

        • memory/2452-19-0x0000000000400000-0x00000000016A8000-memory.dmp

          Filesize

          18.7MB

        • memory/2452-20-0x0000000000400000-0x00000000016A8000-memory.dmp

          Filesize

          18.7MB

        • memory/2452-27-0x0000000000400000-0x00000000016A8000-memory.dmp

          Filesize

          18.7MB

        • memory/2452-49-0x0000000004270000-0x0000000005518000-memory.dmp

          Filesize

          18.7MB

        • memory/2452-34-0x0000000000400000-0x00000000016A8000-memory.dmp

          Filesize

          18.7MB

        • memory/2452-48-0x0000000000400000-0x00000000016A8000-memory.dmp

          Filesize

          18.7MB

        • memory/2452-40-0x0000000000400000-0x00000000016A8000-memory.dmp

          Filesize

          18.7MB

        • memory/2452-41-0x0000000000400000-0x00000000016A8000-memory.dmp

          Filesize

          18.7MB

        • memory/2452-47-0x0000000000400000-0x00000000016A8000-memory.dmp

          Filesize

          18.7MB

        • memory/3044-8-0x0000000000400000-0x00000000016A8000-memory.dmp

          Filesize

          18.7MB

        • memory/3044-11-0x0000000004210000-0x00000000054B8000-memory.dmp

          Filesize

          18.7MB

        • memory/3044-12-0x0000000004210000-0x00000000054B8000-memory.dmp

          Filesize

          18.7MB

        • memory/3044-10-0x0000000000400000-0x00000000016A8000-memory.dmp

          Filesize

          18.7MB