Analysis

  • max time kernel
    142s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/01/2024, 11:37

General

  • Target

    2024-01-28_c69830c89eb822bfe794ef9f692c2b24_cryptolocker.exe

  • Size

    125KB

  • MD5

    c69830c89eb822bfe794ef9f692c2b24

  • SHA1

    0280d9f8d6efe6c5259c43059eed519cffb25d4b

  • SHA256

    e66111701667b9afbb985d72fe038830c78551d610469f2e67dd065162c385c6

  • SHA512

    acec3134d0fd39f25f36feb7416d0d0318267970d0b83ae1d81a9c7836eff310c60696fbcd325cd37cd33fe007e7d628ffeeabff06544c49758b19c91d055dd2

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUYOVbvh//L0:vCjsIOtEvwDpj5H9YvQd2RS

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 5 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-28_c69830c89eb822bfe794ef9f692c2b24_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-28_c69830c89eb822bfe794ef9f692c2b24_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:976
    • 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:4968

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    125KB

    MD5

    3e28787e01b135de8b00801fd8ebaeec

    SHA1

    f27393c12ce32f9f6d8d3a6d46a43df181f37e21

    SHA256

    4556eaaa347bf1b68fdd00a62803ea06401b2ca6f2e17a66b67de6c59b24f7b5

    SHA512

    9e67e6731da6b8ab4150794594f7bec037fdf418362bccdcb78f8b2b309cb792cd0d7f1281e85e3b5545ea87c231e742cd022eecb2fbb9d1bc72b453fc1787d2

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/976-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/976-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/976-2-0x0000000000610000-0x0000000000616000-memory.dmp

    Filesize

    24KB

  • memory/4968-17-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4968-20-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB