Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-05-2024 00:36

General

  • Target

    2024-05-23_5363d13f6051ad3018fb1bba2e771a96_cryptolocker.exe

  • Size

    85KB

  • MD5

    5363d13f6051ad3018fb1bba2e771a96

  • SHA1

    7bd0283e201a5fa8bfd5c6fbecc60c2d1f21ce3b

  • SHA256

    5bd569140304be156d21c71673176568af508399091279d7392731bde0beea49

  • SHA512

    cb15d56d20f3c5e71d598a88519f04fabff6fa2479ac6fc94f061e226b9c69bf60286d7f4eb7157adceab50a8e95dc788fa49e0a5d2d2f975417ab453a90253f

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrC+a:TCjsIOtEvwDpj5HE/OUHnSMY

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 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\2024-05-23_5363d13f6051ad3018fb1bba2e771a96_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-23_5363d13f6051ad3018fb1bba2e771a96_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4732
    • 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:4436

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

    85KB

    MD5

    9ba9674c5307d9d0d612e64d8b971be1

    SHA1

    14edc1d7e49a49b8b93a5791afee1970c623c67d

    SHA256

    a729c76cd30a6b24e0c8d9169832170e2d77fa46dbbf52a6f72d3d73c299dbad

    SHA512

    c4a18e5061f7e082e076ef367ca3b1680ffa2a1cad606dc650fbad3614fadbb0a2c73170e5c106f45a4596375e1ac65de05a8e29951a71148b2ff4a34b3545ff

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

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4436-19-0x0000000002080000-0x0000000002086000-memory.dmp
    Filesize

    24KB

  • memory/4436-25-0x00000000005B0000-0x00000000005B6000-memory.dmp
    Filesize

    24KB

  • memory/4436-48-0x0000000000500000-0x000000000050E000-memory.dmp
    Filesize

    56KB

  • memory/4732-0-0x0000000000500000-0x000000000050E000-memory.dmp
    Filesize

    56KB

  • memory/4732-1-0x0000000000660000-0x0000000000666000-memory.dmp
    Filesize

    24KB

  • memory/4732-2-0x00000000007D0000-0x00000000007D6000-memory.dmp
    Filesize

    24KB

  • memory/4732-9-0x0000000000660000-0x0000000000666000-memory.dmp
    Filesize

    24KB

  • memory/4732-17-0x0000000000500000-0x000000000050E000-memory.dmp
    Filesize

    56KB