Analysis

  • max time kernel
    143s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/09/2023, 13:49

General

  • Target

    2023-08-26_3e90587dba039d9564841b33aee0865c_cryptolocker_JC.exe

  • Size

    32KB

  • MD5

    3e90587dba039d9564841b33aee0865c

  • SHA1

    d8a756f8b37c9a1991688b777c16713ba9bf6e82

  • SHA256

    7ecdb1440bdac31a9f8d4155af4a0b6358eb2dc0898fc625bab377fe1ca9e6b2

  • SHA512

    aa747b0634a95aa378c558131f504a6a0dd00e9d7652bb3da29af8eb22e4522b5e132e0a1e7ef3a137ac8049213bac2f4a25b60cd68b214735f9a05db85bc34a

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeF:ZzFbxmLPWQMOtEvwDpjLeF

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\2023-08-26_3e90587dba039d9564841b33aee0865c_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-08-26_3e90587dba039d9564841b33aee0865c_cryptolocker_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4992
    • 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:3320

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    33KB

    MD5

    fa4394f4585b47ab9736d39e843b60e9

    SHA1

    b8f8f8921b1a61f7e50fa6e19e01458c0d75cfbf

    SHA256

    4df2a309e68dd86db224a9b92a5b15ad628e541ef939fc65617a19c7c43736f9

    SHA512

    6f9fb9a77c7f700dea44a17104e1aad261cf09b74996a68955590571253da8d271dbd91099e2187c429363e522db57dd5912cef769b7c86e9d717a2b138719d6

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

    Filesize

    33KB

    MD5

    fa4394f4585b47ab9736d39e843b60e9

    SHA1

    b8f8f8921b1a61f7e50fa6e19e01458c0d75cfbf

    SHA256

    4df2a309e68dd86db224a9b92a5b15ad628e541ef939fc65617a19c7c43736f9

    SHA512

    6f9fb9a77c7f700dea44a17104e1aad261cf09b74996a68955590571253da8d271dbd91099e2187c429363e522db57dd5912cef769b7c86e9d717a2b138719d6

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

    Filesize

    33KB

    MD5

    fa4394f4585b47ab9736d39e843b60e9

    SHA1

    b8f8f8921b1a61f7e50fa6e19e01458c0d75cfbf

    SHA256

    4df2a309e68dd86db224a9b92a5b15ad628e541ef939fc65617a19c7c43736f9

    SHA512

    6f9fb9a77c7f700dea44a17104e1aad261cf09b74996a68955590571253da8d271dbd91099e2187c429363e522db57dd5912cef769b7c86e9d717a2b138719d6

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3320-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3320-19-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4992-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/4992-1-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

  • memory/4992-2-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

  • memory/4992-3-0x0000000002230000-0x0000000002236000-memory.dmp

    Filesize

    24KB

  • memory/4992-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB