Analysis

  • max time kernel
    133s
  • max time network
    125s
  • 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 02:24

General

  • Target

    2024-05-23_1dc15c2bc696e4285557bd112dc78cd8_cryptolocker.exe

  • Size

    42KB

  • MD5

    1dc15c2bc696e4285557bd112dc78cd8

  • SHA1

    c31be27d08e0e566cfff7b3ac4755a556560a30b

  • SHA256

    ae22fbe81e0a4ba8e5c0d5ae5d1cfdf65b929aa9cef81fa7f5d2d7af42df0062

  • SHA512

    af1f93c0cf8d4daf86294ffc73accd159ffb86730cd9f4f912b68af05bc0dbbab78fa4cdaebf7b9ec9b1e28376da5e5e68f7e84f0c0c1f19c4f95bd3fd9c8f46

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDb7xLr:ZzFbxmLPWQMOtEvwDpjLeJAsKcb7x

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-05-23_1dc15c2bc696e4285557bd112dc78cd8_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-23_1dc15c2bc696e4285557bd112dc78cd8_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3568
    • 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:3516

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

    42KB

    MD5

    52ab3431574066fd8c1f9d63de24c61c

    SHA1

    1d7d10758ef0f5a494e30e86b1f3a8e0608ba698

    SHA256

    49c93227bbcd935a9d6ae7534ce65c916e98a82feadb3e10d5654d4733a7526c

    SHA512

    b7f162b06c85217ba066c59ccc57d82dd1a7dd46b51d275d319740df6e7724d6a90dba0b7e33e9cff6044ed3f360c0c3c12181ef69ebb65f78faede9efa27834

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

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3516-19-0x0000000000490000-0x0000000000493000-memory.dmp
    Filesize

    12KB

  • memory/3516-20-0x00000000004F0000-0x00000000004F6000-memory.dmp
    Filesize

    24KB

  • memory/3516-26-0x00000000004D0000-0x00000000004D6000-memory.dmp
    Filesize

    24KB

  • memory/3568-0-0x00000000004E0000-0x00000000004E3000-memory.dmp
    Filesize

    12KB

  • memory/3568-1-0x0000000000840000-0x0000000000846000-memory.dmp
    Filesize

    24KB

  • memory/3568-2-0x0000000000840000-0x0000000000846000-memory.dmp
    Filesize

    24KB

  • memory/3568-3-0x0000000002080000-0x0000000002086000-memory.dmp
    Filesize

    24KB

  • memory/3568-16-0x00000000004E0000-0x00000000004E3000-memory.dmp
    Filesize

    12KB