Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 02:18

General

  • Target

    2024-05-22_ad478df1fa4bfd1ad9514e5fb8eb2360_cryptolocker.exe

  • Size

    52KB

  • MD5

    ad478df1fa4bfd1ad9514e5fb8eb2360

  • SHA1

    d7be79151ae830b853a8e3e67683d3d26ffddd88

  • SHA256

    7c34455a41f96525ae68e7a1009e41a6daba13147b8296efbf398d2b085cd80a

  • SHA512

    da64ca6f7da6293e568d9913d1eb1aecdad2efdd5dba396655729f5492f5a86b0311f4fcb6ad0021706c69db49b212cb5bb467ea34f176b3771d93592e7e838f

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvhx5/xFRY+iyys:6j+1NMOtEvwDpjr8hhXy+iyys

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 IoCs
  • 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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-22_ad478df1fa4bfd1ad9514e5fb8eb2360_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_ad478df1fa4bfd1ad9514e5fb8eb2360_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:612
    • 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:3788

Network

MITRE ATT&CK Matrix ATT&CK v13

Defense Evasion

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

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

    52KB

    MD5

    ff149804f78c92e6f82754ec9823fb7f

    SHA1

    bdc3461a50458ddcdaf1293a588791dd31357933

    SHA256

    2d18d53864905a1d0c7315f9f1abba4250169d9cb68d03a273bf245b544fcd9e

    SHA512

    928850298b80527e3beb78fd9429743039abcc72fbfbb91277d8e12834870b4c2d52af5438ccd5f256c4b9ba6480bd47bfb97be2ffbe2d82950e7fc32bc110f7

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

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/612-0-0x0000000000500000-0x000000000050F000-memory.dmp
    Filesize

    60KB

  • memory/612-1-0x0000000000640000-0x0000000000646000-memory.dmp
    Filesize

    24KB

  • memory/612-2-0x0000000000660000-0x0000000000666000-memory.dmp
    Filesize

    24KB

  • memory/612-9-0x0000000000640000-0x0000000000646000-memory.dmp
    Filesize

    24KB

  • memory/612-25-0x0000000000500000-0x000000000050F000-memory.dmp
    Filesize

    60KB

  • memory/3788-17-0x0000000000500000-0x000000000050F000-memory.dmp
    Filesize

    60KB

  • memory/3788-19-0x0000000001F70000-0x0000000001F76000-memory.dmp
    Filesize

    24KB

  • memory/3788-26-0x0000000001F50000-0x0000000001F56000-memory.dmp
    Filesize

    24KB

  • memory/3788-49-0x0000000000500000-0x000000000050F000-memory.dmp
    Filesize

    60KB