Analysis

  • max time kernel
    134s
  • max time network
    124s
  • 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 02:23

General

  • Target

    2024-05-22_0c896b7bd6d5c998298c31ae1cda602b_cryptolocker.exe

  • Size

    53KB

  • MD5

    0c896b7bd6d5c998298c31ae1cda602b

  • SHA1

    44f31ca06b153a36ae02e3049841ebf7d6bef92b

  • SHA256

    b009b855320c10ca0119bd3dc90caaa477eba23f574b64c34feeba1697bc16f1

  • SHA512

    0ef374aa685e228a3ed24b3bba64489f57cfabace1b31c7cd0a590b46f9bc194c3f2da369c10082524a9094ba246b0a33aa8c4c81828e27b8ef24aca222a0f30

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvhx5/xFRkHg:6j+1NMOtEvwDpjr8hhXiA

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-22_0c896b7bd6d5c998298c31ae1cda602b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_0c896b7bd6d5c998298c31ae1cda602b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3216
    • 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:2456

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

    53KB

    MD5

    8f26d0b56b5d35173ecaa4b0c8bc8d21

    SHA1

    c4c1d5ce56a32b609ad4380560c7c3a172eeb920

    SHA256

    4c06b1cc487d234955d8cf1e7c2758a255086bac547a95b26d382c9182d647f9

    SHA512

    7dfd20ee9daf68d29331784a68213ecaf560c222cc164ff4094ff8ae945ebb0a65eb0bec7de1ff653b2cfb41d703144a0624f1aa69df328c9a2dfbdbd8636fd6

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

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2456-19-0x0000000000640000-0x0000000000646000-memory.dmp
    Filesize

    24KB

  • memory/2456-25-0x0000000000520000-0x0000000000526000-memory.dmp
    Filesize

    24KB

  • memory/2456-48-0x0000000000500000-0x000000000050F000-memory.dmp
    Filesize

    60KB

  • memory/3216-0-0x0000000000500000-0x000000000050F000-memory.dmp
    Filesize

    60KB

  • memory/3216-1-0x0000000000730000-0x0000000000736000-memory.dmp
    Filesize

    24KB

  • memory/3216-2-0x0000000001FF0000-0x0000000001FF6000-memory.dmp
    Filesize

    24KB

  • memory/3216-9-0x0000000000730000-0x0000000000736000-memory.dmp
    Filesize

    24KB

  • memory/3216-17-0x0000000000500000-0x000000000050F000-memory.dmp
    Filesize

    60KB