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Analysis

  • max time kernel
    138s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/10/2023, 17:11

General

  • Target

    2023-08-27_33ce1d5c94ab14ce7b017ce38c6c493d_cryptolocker_JC.exe

  • Size

    45KB

  • MD5

    33ce1d5c94ab14ce7b017ce38c6c493d

  • SHA1

    771d73e570fa1274f0de17ab37914dc19508614f

  • SHA256

    f555e664fdf51de0bee5d65edd8a6af1502bb51a229d6e8e842f0b9e4c89bc4c

  • SHA512

    fc25c5b07d7ee6e9047d1b61c0fc0b5d010f0a172ece1a32b00744f5a7d83f6b4184f6d1b56d4522adf96a73e230f2ae4e7b616a4cd8fd303a74256793c1812b

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr42A7n0P:vj+jsMQMOtEvwDpj5HczerLO0P

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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\2023-08-27_33ce1d5c94ab14ce7b017ce38c6c493d_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-08-27_33ce1d5c94ab14ce7b017ce38c6c493d_cryptolocker_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3700
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:3336

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    45KB

    MD5

    f896f0a9e9a9073dcda3bdd58218b4ec

    SHA1

    5022d35a06d3d59f99e1c9dbc0d7769d16402288

    SHA256

    6366be248b648e320a30f643c3ba8c4f443657bcb240aad6881027d33fc564e0

    SHA512

    37070227288f126e6ebbf757287bc62a161017487fa994e5b87da99d5e54c55fd8c3b2ef6c77b19a73ad05094062ebeee1b610466a82e7b555299cce2a74ff48

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

    Filesize

    45KB

    MD5

    f896f0a9e9a9073dcda3bdd58218b4ec

    SHA1

    5022d35a06d3d59f99e1c9dbc0d7769d16402288

    SHA256

    6366be248b648e320a30f643c3ba8c4f443657bcb240aad6881027d33fc564e0

    SHA512

    37070227288f126e6ebbf757287bc62a161017487fa994e5b87da99d5e54c55fd8c3b2ef6c77b19a73ad05094062ebeee1b610466a82e7b555299cce2a74ff48

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

    Filesize

    45KB

    MD5

    f896f0a9e9a9073dcda3bdd58218b4ec

    SHA1

    5022d35a06d3d59f99e1c9dbc0d7769d16402288

    SHA256

    6366be248b648e320a30f643c3ba8c4f443657bcb240aad6881027d33fc564e0

    SHA512

    37070227288f126e6ebbf757287bc62a161017487fa994e5b87da99d5e54c55fd8c3b2ef6c77b19a73ad05094062ebeee1b610466a82e7b555299cce2a74ff48

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3336-17-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/3336-18-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/3700-0-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

  • memory/3700-1-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

  • memory/3700-2-0x0000000002240000-0x0000000002246000-memory.dmp

    Filesize

    24KB