Analysis

  • max time kernel
    147s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/08/2023, 15:57

General

  • Target

    4a5b4968361a04ee077c37c3d159a635_cryptolocker_JC.exe

  • Size

    43KB

  • MD5

    4a5b4968361a04ee077c37c3d159a635

  • SHA1

    beb1cb8297990b8cc53ecfb61f015625326ea769

  • SHA256

    f388b6774be69f42194ee9232c014f41bea6a631f8c327707602fc81f987ea84

  • SHA512

    673f119b11f7a19fb2da562ad43c5a2b233287ceb43133721015b1d6bb11705be6f2c18d6103f927c165cddf96630109ab93dff9f94d1f9d262e1e6948cb9691

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjZ1UKXJ0T5baryRoo:ZzFbxmLPWQMOtEvwDpjbtJ0Z4yKo

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4a5b4968361a04ee077c37c3d159a635_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\4a5b4968361a04ee077c37c3d159a635_cryptolocker_JC.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4768
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:1880

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    44KB

    MD5

    c41c0c57de07cf7f5db97f8abeb92618

    SHA1

    3a58f342f2b8d71ad241968fa51b1034348b36fe

    SHA256

    5f33a7401474d7d667c73a8cd543f742c58b4966aee826d283a592756ce78234

    SHA512

    da2610feed67639d30bc3e6a25b1fa0babd106de4417ababbaeddedb19a802282b97afbe0caa47fc1824e60cd907dc361feb3814cd72953fc6f49f330f2045e6

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

    Filesize

    44KB

    MD5

    c41c0c57de07cf7f5db97f8abeb92618

    SHA1

    3a58f342f2b8d71ad241968fa51b1034348b36fe

    SHA256

    5f33a7401474d7d667c73a8cd543f742c58b4966aee826d283a592756ce78234

    SHA512

    da2610feed67639d30bc3e6a25b1fa0babd106de4417ababbaeddedb19a802282b97afbe0caa47fc1824e60cd907dc361feb3814cd72953fc6f49f330f2045e6

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

    Filesize

    44KB

    MD5

    c41c0c57de07cf7f5db97f8abeb92618

    SHA1

    3a58f342f2b8d71ad241968fa51b1034348b36fe

    SHA256

    5f33a7401474d7d667c73a8cd543f742c58b4966aee826d283a592756ce78234

    SHA512

    da2610feed67639d30bc3e6a25b1fa0babd106de4417ababbaeddedb19a802282b97afbe0caa47fc1824e60cd907dc361feb3814cd72953fc6f49f330f2045e6

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1880-150-0x0000000000450000-0x0000000000453000-memory.dmp

    Filesize

    12KB

  • memory/1880-152-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1880-154-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4768-133-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/4768-134-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/4768-135-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/4768-136-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/4768-153-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB