Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 01:42

General

  • Target

    2024-05-22_4eec15728190beabf45d735a636104c0_cryptolocker.exe

  • Size

    43KB

  • MD5

    4eec15728190beabf45d735a636104c0

  • SHA1

    d214b86d139c052681d689aef16c27f8c089ab94

  • SHA256

    168bbe9a6e9d5ae414e1e624588d9b8dd187f621719cc04729f457a219fdc571

  • SHA512

    7d33d394d41a8e049df3cf54e2563b8b0ea0e6f98f7a3f97b8ccb3ce59d680721d7133c6e314b547854003b7a4c650898628538fa8f723d681a24d1483321c5c

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4REL+cc66TcjF:vj+jsMQMOtEvwDpj5HW5scx

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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_4eec15728190beabf45d735a636104c0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_4eec15728190beabf45d735a636104c0_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2132
    • 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:1316

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

    43KB

    MD5

    e5b2cd00a8b835a55bb26cfd916efc59

    SHA1

    54e79ab99b986207dd83b7bd79a61e91fb8c127f

    SHA256

    04757535fea08ff42deb4456fcfbafdcaf74020b144cf31e222bf4b9e9178b56

    SHA512

    72bbd8dafa51307698aa0168d62a3ccaee5f9d9ffe48acad958d0aa7902fb08dbb224267671d2081295e49eb43603e22695778d98f65a8066781bf776500139c

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

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1316-17-0x0000000002100000-0x0000000002106000-memory.dmp
    Filesize

    24KB

  • memory/1316-23-0x00000000005A0000-0x00000000005A6000-memory.dmp
    Filesize

    24KB

  • memory/2132-0-0x00000000004D0000-0x00000000004D6000-memory.dmp
    Filesize

    24KB

  • memory/2132-1-0x00000000004F0000-0x00000000004F6000-memory.dmp
    Filesize

    24KB

  • memory/2132-8-0x00000000004D0000-0x00000000004D6000-memory.dmp
    Filesize

    24KB